HAND-HELD POWER TOOL

A hand-held power tool, in particular a drilling hammer and/or chisel hammer, that includes at least one housing, at least one handle, and at least one interface device for establishing an electrical and mechanical connection to at least one rechargeable battery pack. The hand-held power tool includes at least one damping unit that is provided for supporting the at least one handle relative to the at least one housing in a vibration-damped manner. The at least one interface device is situated on the at least one handle.

FIELD OF THE INVENTION

The present invention is to a hand-held power tool.

BACKGROUND INFORMATION

Hand-held power tools, including a drilling hammer and/or a chisel hammer, are believed to be understood.

SUMMARY OF THE INVENTION

The present invention is directed to a hand-held power tool, in particular a drilling hammer and/or chisel hammer, that includes at least one housing, at least one handle, and at least one interface device for establishing an electrical and mechanical connection to at least one rechargeable battery pack.

It is provided that the hand-held power tool includes at least one damping unit that is provided for supporting the at least one handle relative to the at least one housing in a vibration-damped manner, the at least one interface device being situated on the at least one handle. Due to situating the at least one interface device on the at least one handle, in an operating state of the hand-held power tool a preferably low transmission of impacts and vibrations to the at least one rechargeable battery pack that is coupled to the hand-held power tool via the interface device may be achieved in an advantageously simple manner, as the result of which damage to the at least one rechargeable battery pack, in particular wear, caused by the mechanical stress, on electrical contact elements and/or fastening elements for connecting the at least one rechargeable battery pack to the hand-held power tool may advantageously be avoided. In addition, due to situating the at least one interface device on the at least one handle, a preferably good and balanced weight distribution of the hand-held power tool may be achieved, and due to the at least one vibration-damped handle, further components for damping the at least one rechargeable battery pack relative to the housing may be dispensed with.

In the present context, a “hand-held power tool” is understood in particular to mean a machine, in particular a power drill, a drilling hammer, a chisel hammer, a percussion drill, a saw such as a jigsaw or reciprocating saw, a plane, a screwdriver, a milling tool, a grinder, an angle grinder, an orbital sander, a garden tool, and/or a multifunctional tool, that processes a workpiece and is transportable by an operator without a transport machine. The hand-held power tool may have a mass that is in particular less than 40 kg, more preferably less than 10 kg, and particularly preferably less than 5 kg. The housing of the hand-held power tool preferably includes at least two housing shells, and in an installed state forms at least part, which may be at least a large part, of a shell surface of the hand-held power tool that is grippable by an operator of the hand-held power tool. The at least one housing of the hand-held power tool is made at least partially of plastic. In the present context, a “handle” is understood in particular to mean an element that is provided for holding and/or guiding the hand-held power tool. The handle is preferably grippable and/or holdable at least with one hand, and in particular includes at least one control element that is provided in particular for controlling a drive unit of the hand-held power tool. The control element may be configured, for example, as an on/off switch, as an automatic safety switch-off device, and/or as a metering controller for metering an impact energy. In particular, the handle is provided for being completely grasped all around with one hand by an in particular adult operator. A circumference of the handle is preferably 70 mm minimum, more preferably 90 mm minimum, and particularly preferably 110 mm minimum, and/or in particular a maximum of 210 mm, which may be 180 mm, and very particularly preferably 140 mm. The handle is in particular made at least partially of a plastic and/or a rubber material.

The interface device is preferably provided for detachably connecting the at least one rechargeable battery pack to the hand-held power tool. At least one fastening element is advantageously provided for mechanically connecting the at least one rechargeable battery pack to the hand-held power tool. At least one contact element is advantageously provided for electrically connecting the at least one rechargeable battery pack to the hand-held power tool. The at least one interface device preferably includes at least one interface situated on the at least one rechargeable battery pack, at least one interface situated on the hand-held power tool, and/or an exchange interface unit that is detachably coupleable to the at least one rechargeable battery pack and to the hand-held power tool. In the present context, a “rechargeable battery pack” is understood in particular to mean an energy store unit that is provided for being coupleably connected to the hand-held power tool. The rechargeable battery pack is preferably connected to the hand-held power tool via the at least one interface device.

In addition, the rechargeable battery pack is provided in particular for storing electrical energy and supplying at least one electric motor of the hand-held power tool with electrical energy. The at least one electric motor is preferably configured as an EC motor. The rechargeable battery pack in particular includes at least one energy store. The energy store includes at least one accumulator cell, and advantageously includes multiple interconnected accumulator cells. In addition, the rechargeable battery pack in particular includes a, which may be one, housing in which the energy store is situated and which is provided for protecting the energy store.

In the present context, a “damping unit” is understood in particular to mean a unit that is provided for greatly reducing a transmission of an oscillation, of impacts, and/or of a vibration, in particular of and in particular between various units, elements, components, and/or parts of the hand-held power tool. The term “greatly reducing” is understood to mean that the oscillation, the impacts, and/or the vibration that act(s) on a component of the hand-held power tool to be damped, in particular on the at least one handle, is/are reduced by at least 50%, which may be by more than 70%, and particularly preferably by more than 90%, in particular compared to an undamped configuration. A damping rate of oscillations, impacts, and/or vibrations of the at least one damping unit is advantageously settable, in particular by an operator. The at least one damping unit includes in particular at least one, which may be exactly one, and in particular multiple, elastic, damping, and/or resilient damping element(s) that greatly reduce(s) the oscillations, impacts, and/or vibrations acting on at least a portion of the hand-held power tool. The at least one damping element in particular is situated between two portions of the hand-held power tool that are to be damped relative to one another with the aid of the at least one damping unit. An “elastic element” is understood in particular to mean an element which is repeatedly deformable without the element thus being mechanically damaged or destroyed, and which, in particular after a deformation, tends to automatically return to its original shape. The at least one damping element may be configured as a mechanical, electrical, hydraulic, and/or pneumatic damping element. In particular, the at least one damping unit includes multiple damping elements having different configurations. The at least one damping element is preferably a toggle lever, a leaf spring, a compression spring, a foam part, and/or a rubber part.

In the present context, “provided” is understood in particular to mean specially configured, configured, and/or equipped. Providing an object for a certain function is understood in particular to mean that the object meets and/or carries out this certain function in at least one use state and/or operating state.

Moreover, it is provided that the at least one interface device includes at least one exchange interface unit that is configured to be detachably connectable to the at least one rechargeable battery pack and to the at least one handle, and/or to the at least one rechargeable battery pack and to the at least one housing. In this way, exchange interface units having different configurations may be coupled to the hand-held power tool, as the result of which the hand-held power tool may advantageously be easily retrofitted, for example, for different applications, in particular for connection to different rechargeable battery packs, for example for connection to an 18-V rechargeable battery pack and to a 36-V rechargeable battery pack.

In the present context, “detachable” is understood in particular to mean “nondestructively separable.” The exchange interface unit is preferably configured to be exchangeably connectable to the at least one rechargeable battery pack and to the at least one handle, and/or to the at least one rechargeable battery pack and to the at least one housing. The at least one interface device particularly preferably includes at least two exchange interface units, which may behaving at least partially different configurations, which are alternatively coupleable to the hand-held power tool. The at least one exchange interface unit is particularly preferably configured to be detachably connectable to the at least one rechargeable battery pack and to the at least one, in particular vibration-damped, handle. The exchange interface unit is preferably fastenable to the at least one handle and/or to the housing of the hand-held power tool with the aid of at least one fastening element. The at least one fastening element is preferably configured as a screw, clamping element, clip, or detent hook, or in some other way that appears meaningful to those skilled in the art. The at least one exchange interface unit is particularly preferably configured to be detachably connectable to the at least one rechargeable battery pack and to the at least one handle, and/or to the at least one rechargeable battery pack and to the at least one housing, without the use of tools. The at least one fastening element may be situated on the at least one handle or on the housing of the hand-held power tool and/or on the at least one rechargeable battery pack.

A hand-held power tool, in particular a drilling hammer and/or chisel hammer, that includes at least one housing, at least one handle, and at least one interface device for establishing an electrical and mechanical connection to at least one rechargeable battery pack is preferably conceivable, the at least one interface device including at least one exchange interface unit that is configured to be detachably connectable to the at least one rechargeable battery pack and to the at least one handle, and/or to the at least one rechargeable battery pack and to the at least one housing, which represents an alternative to the embodiment of the hand-held power tool described herein.

Furthermore, it is provided that the hand-held power tool includes at least one safety release unit for automatically releasing the fastening of the at least one exchange interface unit and/or of the at least one rechargeable battery pack when a limiting value of at least one safety parameter is exceeded. In particular, damage to the at least one rechargeable battery pack coupled to the hand-held power tool, for example if the hand-held power tool drops, may thus be avoided.

In the present context, “automatic” is understood in particular to mean an active intervention that is at least essentially, which may be completely, independent of the operator. In the present context, a “safety parameter” is understood in particular to mean a parameter that is relevant at least for avoiding damage to the hand-held power tool and/or to the rechargeable battery pack, or injury to the operator. The at least one safety parameter is preferably formed by a force that acts on the at least one rechargeable battery pack that is coupled to the hand-held power tool, and/or on the interface device. The limiting value of the at least one safety parameter is exceeded in particular if the hand-held power tool drops.

A hand-held power tool, in particular a drilling hammer and/or chisel hammer, that includes at least one housing, at least one handle, and at least one interface device for establishing an electrical and mechanical connection to at least one rechargeable battery pack, and that includes at least one safety release unit for automatically releasing the fastening of the at least one exchange interface unit and/or of the at least one rechargeable battery pack when a limiting value of at least one safety parameter is exceeded, is conceivable which represents an alternative to the embodiment of the hand-held power tool described herein.

In addition, it is provided that the hand-held power tool includes at least one rechargeable battery damping unit for supporting at least a portion of the at least one interface device in a vibration-damped manner. A preferably low transmission of impacts and vibrations to the at least one rechargeable battery pack in an operating state of the hand-held power tool may thus be achieved with a simple configuration, and damage to the at least one rechargeable battery pack, in particular wear, caused by the mechanical stress, on electrical contact elements and/or fastening elements for connecting the at least one rechargeable battery pack to the hand-held power tool may advantageously be avoided.

In the present context, a “rechargeable battery damping unit” is understood in particular to mean a unit that is provided for greatly reducing a transmission of an oscillation, of impacts, and/or of a vibration, in particular of and in particular between the hand-held power tool and the rechargeable battery pack that is coupled to the hand-held power tool. The term “greatly reducing” is understood to mean that the oscillation, the impacts, and/or the vibration that act(s) on the at least one rechargeable battery pack, in particular via the at least one interface device, is/are reduced by at least 50%, which may be by more than 70%, and particularly preferably by more than 90%, in particular compared to an undamped configuration.

The at least one rechargeable battery damping unit includes in particular at least one, which may be exactly one, and in particular multiple, elastic, damping, and/or resilient damping element(s) that greatly reduce(s) the oscillations, impacts, and/or vibrations. The at least one damping element is in particular situated between the hand-held power tool, in particular the at least one handle of the hand-held power tool, and the at least one interface device. An “elastic element” is understood in particular to mean an element which is repeatedly deformable without the element thus being mechanically damaged or destroyed, and which in particular after a deformation tends to automatically return to its original shape. The at least one damping element may be configured as a mechanical, electrical, hydraulic, and/or pneumatic damping element. The at least one damping element may be formed by a spring, an elastomeric, rubber, and/or foam element, a linear decoupling, or in some other way that appears meaningful to those skilled in the art.

In addition, it is provided that the hand-held power tool includes at least one rechargeable battery pack that is at least partially electrically and mechanically coupleable to the at least one interface device, a combined mass of the at least one handle and of the at least one rechargeable battery pack being at least ⅛ of a total hand-held power tool mass. A preferably good and balanced weight distribution of the hand-held power tool may thus be achieved due to situating the at least one interface device on the at least one handle.

The combined mass of the at least one rechargeable battery pack and of the at least one handle is in particular at least ¼, which may be at least ⅓, and particularly preferably ½ of the total hand-held power tool mass. The at least one handle and the at least one rechargeable battery pack may particularly preferably be provided as an absorption mass.

Furthermore, it is provided that the at least one interface device includes at least one auxiliary function unit that provides an auxiliary function in addition to the electrical and mechanical coupling to at least one rechargeable battery pack. A preferably broad application area and advantageously flexible usability of the hand-held power tool may thus be achieved.

The at least one auxiliary function unit is preferably configured, at least in part, to be fixedly connected to the at least one exchange interface unit. The at least one auxiliary function unit may be configured as an operating hours counter, as a mounting, for example for a lighting unit such as a flashlight, for at least one sensor and/or for a smart phone, as a suction unit, as a control unit, in particular as an HMI interface, as an illumination unit, as a measuring device, for example as a laser distance meter for depth measurement, or as a line laser, and/or in some other way that appears meaningful to those skilled in the art. It is also conceivable for the at least one interface device to include at least two auxiliary function units which have configurations that are at least partially different, and which in particular are alternatively coupleable to the hand-held power tool. It is conceivable for the at least one auxiliary function unit to be situatable on the housing, on the handle, on a housing cover, and/or at some other location on the hand-held power tool that appears meaningful to those skilled in the art. The at least one auxiliary function unit is particularly preferably situatable on the hand-held power tool in a vibration-damped manner. The hand-held power tool may thus be retrofitted, for example, for different applications, using a simple configuration.

In addition, it is provided that the hand-held power tool includes at least one absorption unit that is at least partially situated on the interface device. Good oscillation damping may advantageously be achieved in this way.

In the present context, an “absorption unit” is understood in particular to mean a unit which includes at least one absorption mass that is provided for generating, in an operating state of the hand-held power tool, a counter-oscillation with respect to the oscillations and vibrations generated by the hand-held power tool, and compensating for the oscillations and vibrations generated by the hand-held power tool. The at least one absorption unit preferably includes at least one absorption mass that is preferably formed, at least partially, by the at least one rechargeable battery pack and/or by the at least one handle.

Moreover, it is provided that the at least one safety release unit includes at least one release element having an at least partially elastic configuration. A cost-effective embodiment of the at least one safety release unit may thus be achieved with a simple configuration.

The term “elastic” is understood in particular to mean that the at least one release element is repeatedly deformable without the release element thus being mechanically damaged or destroyed, and that the at least one release element, in particular after a deformation, tends to automatically return to its original shape. The at least one release element may be configured, at least in part, as a spring, in particular as a leaf spring, as an elastic subarea on the housing of the hand-held power tool and/or the at least one exchange interface unit, as a wall thickness of the housing of the hand-held power tool that is reduced, at least in areas, as a predetermined breaking point on the housing of the hand-held power tool and/or on the at least one exchange interface unit, as a magnet, or in some other way that appears meaningful to those skilled in the art. Arbitrary combinations of release elements having different configurations, which appear meaningful to those skilled in the art, are also conceivable. The at least one release element in particular may be configured, at least in part, in one piece with at least one mechanical fastening element and/or with at least one electrical contact element.

Furthermore, it is provided that the hand-held power tool includes at least one adjustment unit for adjusting at least one damping parameter of the at least one damping unit. An advantageously high level of operator comfort and a preferred adaptation to different applications, to different operator preferences, and/or to the at least one rechargeable battery pack coupled to the hand-held power tool may be achieved in this way.

The at least one adjustment unit is provided in particular for adjusting at least one damping parameter of the at least one damping unit, which may be by the operator of the hand-held power tool. The at least one adjustment unit preferably includes at least one control element that is provided for actuation, in particular manual actuation, by the operator for adjusting the damping parameter. The damping parameter is preferably formed by a spring constant, a strength, a tension, and/or a pressure, in particular of the at least one damping element of the at least one damping unit. The at least one adjustment unit is provided for a mechanical or electronic adjustment.

In addition, an exchange interface unit for the hand-held power tool is provided. The hand-held power tool may thus be retrofitted in an advantageously easy manner, for example for different applications, in particular for connection to different rechargeable battery packs, for example for connection to an 18-V rechargeable battery pack and to a 36-V rechargeable battery pack, and/or for connection to different auxiliary function units.

The hand-held power tool according to the present invention is not intended to be limited to the use and specific embodiment described above. In particular, for meeting a mode of operation described herein, the hand-held power tool according to the present invention may include a number of individual elements, components, and units that differ from the number stated herein.

Further advantages result from the following description of the drawings. Multiple exemplary embodiments of the present invention are illustrated in the drawings. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also advantageously consider the features individually and combine them into further meaningful combinations.

DETAILED DESCRIPTION

A hand-held power tool10ais schematically illustrated inFIG. 1. Hand-held power tool10ais configured as a hand-held electric power tool. Hand-held power tool10ais configured as a rechargeable battery hand-held power tool. Hand-held power tool10ais formed by a drilling hammer and/or chisel hammer. However, other embodiments of hand-held power tool10athat appear meaningful to those skilled in the art are also conceivable. Hand-held power tool10aincludes a tool holder36athat is provided for accommodating an insertion tool. Tool holder36ais configured as a quick-change tool holder. Hand-held power tool10aalso includes a handle14afor guiding hand-held power tool10aby an operator. Handle14ais situated on a side of hand-held power tool10afacing away from tool holder36a,viewed along a machining axis. Handle14ais configured as a U-shaped bow-type handle. It is also conceivable for hand-held power tool10ato additionally include an auxiliary handle, which may be configured as a bar-shaped handle, for example. Hand-held power tool10aincludes a drive unit for driving, in an operating state, an insertion tool that is fastened in tool holder36a,and a housing12a.Housing12ais formed by two housing shells. However, other embodiments of housing12athat appear meaningful to those skilled in the art are also conceivable.

Hand-held power tool10aalso includes a damping unit20athat is provided for supporting handle14arelative to housing12ain a vibration-damped manner. Damping unit20aincludes at least one damping element38athat is situated, at least partially, between handle14aand housing12aof hand-held power tool10a.Damping unit20aincludes one damping element38a.However, it is also conceivable for damping unit20ato include some other, arbitrary number of damping elements38a.Damping element38ais made of an elastomer and has an elastically deformable configuration. Damping element38ais made of rubber. Damping element38ais connected to housing12aand to handle14a.Handle14ais connected to housing12avia damping element38a.However, other embodiments of damping element38athat appear meaningful to those skilled in the art, for example made of foam, as a spring element, in particular as a leaf spring or as a coil compression spring, as a toggle lever, as a swivel joint, as a linear bearing, as a hydraulic element, or as any arbitrary combination, are also conceivable.

Hand-held power tool10aalso includes at least one interface device16afor establishing an electrical and mechanical connection to the at least one rechargeable battery pack18a.Hand-held power tool10aincludes one interface device16athat is provided for electrically and mechanically connecting a rechargeable battery pack18ato hand-held power tool10a.Hand-held power tool10aincludes one interface device16a.However, it is also conceivable for hand-held power tool10ato include more than one interface device16a,and in particular for coupling hand-held power tool10a,to more than one rechargeable battery pack18a.Interface device16ais situated on handle14a.Interface device16ais provided for detachably connecting rechargeable battery pack18ato handle14a.Rechargeable battery pack18ais exchangeably connectable to hand-held power tool10avia interface device16a.Rechargeable battery pack18a,in a fastened state to hand-held power tool10avia interface device16a,is provided for supplying hand-held power tool10awith electrical energy.

Interface device16aincludes at least one contact element, not illustrated, for electrically coupling hand-held power tool10ato rechargeable battery pack18a.Interface device16aincludes two contact elements. However, some other number of contact elements is also conceivable. The contact elements of interface device16ahave a configuration that corresponds to contact elements of rechargeable battery pack18a.The contact elements of interface device16aare made of metal. The contact elements are electrically connected to an electronics unit of hand-held power tool10a.Interface device16aalso includes at least one coupling unit40athat is provided for mechanically coupling hand-held power tool10ato rechargeable battery pack18a.Interface device16aincludes one coupling unit40a.However, multiple coupling units40aare also conceivable. Coupling unit40aincludes at least one fastening element42a.Coupling unit40aincludes two fastening elements42a.However, some other number of fastening elements42ais also conceivable. Fastening elements42aare provided for form-fit fastening to housing12a.Fastening elements42aare provided for form-fit fastening of rechargeable battery pack18a.Fastening elements42aeach have a half-shell configuration. Fastening elements42ahave a corresponding configuration. Fastening elements42aare connectable to one another via at least one screw. However, other embodiments of fastening elements42athat appear meaningful to those skilled in the art are also conceivable.

Hand-held power tool10aincludes at least one rechargeable battery damping unit26afor supporting at least a portion of interface device16ain a vibration-damped manner. Hand-held power tool10aincludes a rechargeable battery damping unit26afor supporting interface device16ain a vibration-damped manner. Rechargeable battery damping unit26aincludes at least one rechargeable battery damping element44a.Rechargeable battery damping unit26aincludes two rechargeable battery damping elements44a.However, some other number of rechargeable battery damping elements44ais also conceivable. Rechargeable battery damping elements44ain an installed state are each situated between handle14aof hand-held power tool10aand interface device16a.Rechargeable battery damping elements44aare each made of an elastomer. Rechargeable battery damping elements44ain an installed state rest directly against handle14aof hand-held power tool10aand against fastening elements42aof coupling unit40aof interface device16a.Rechargeable battery damping elements44aare fixedly connected to handle14aof hand-held power tool10a.Rechargeable battery damping elements44aare integrally joined to handle14aof hand-held power tool10a.Rechargeable battery damping elements44aare molded onto handle14aof hand-held power tool10a.However, it is also conceivable for rechargeable battery damping elements44ato be joined to handle14ain some other way that appears meaningful to those skilled in the art, such as by an adhesive bond.

For installing coupling unit40a,fastening elements42aare placed on handle14aaround the side of rechargeable battery damping elements44aof rechargeable battery damping unit26a,viewed along a direction perpendicular to the machining axis of hand-held power tool10a,so that fastening elements42ain an installed state enclose rechargeable battery damping elements44a.For this purpose, fastening elements42aeach have a receiving area that is provided for accommodating one of the rechargeable battery damping elements44ain a form-fit manner. Rechargeable battery damping elements44aeach have a C-shaped cross section, and in an installed state enclose a projection that is molded onto handle14a.Fastening elements42aeach have a C-shaped cross section, and in an installed state enclose rechargeable battery damping elements44aof rechargeable battery damping unit26a.Fastening elements42aare subsequently fixed by screwing to one another, and are thus fastened in a form-fit manner to handle14avia rechargeable battery damping elements44a.Alternatively, it is also conceivable for fastening elements42ato be integrally joined to one another, for example by an adhesive bond, or by a detent and/or plug-in connection, or in some other way that appears meaningful to those skilled in the art. For fastening rechargeable battery pack18ato hand-held power tool10a,fastening elements42aof coupling unit40aeach include a projection46a,which in an installed state engages in a form-fit manner with a recess that is introduced into rechargeable battery pack18a.Fastening elements42aengage with the recesses at opposite sides of rechargeable battery pack18a.

In an installed state, rechargeable battery pack18ais supported relative to handle14ain a vibration-damped manner via rechargeable battery damping unit26a.In addition, rechargeable battery pack18ain an installed state is supported relative to housing12aof hand-held power tool10ain a vibration-damped manner via damping unit20a.In an operating state of hand-held power tool10a,a transmission of oscillations and vibrations from hand-held power tool10ato rechargeable battery pack18ais thus largely avoided. A combined mass of rechargeable battery pack18aand of handle14ais at least ⅛ of a total hand-held power tool mass. The combined mass of rechargeable battery pack18aand of handle14ais at least ¼ of a total hand-held power tool mass. The combined mass of rechargeable battery pack18aand of handle14ais at least ⅓ of a total hand-held power tool mass. The combined mass of rechargeable battery pack18aand of handle14ais ½ of a total hand-held power tool mass.

Further exemplary embodiments of the present invention are shown inFIGS. 3 through 11. The following descriptions and the drawings are limited essentially to the differences between the exemplary embodiments, whereby in principle, with regard to identically denoted components, in particular with regard to components having identical reference numerals, reference may also be made to the drawings and/or the description of the other exemplary embodiments, in particular inFIGS. 1 and 2. To distinguish between the exemplary embodiments, the letter a is added as a suffix to the reference numerals in the exemplary embodiment inFIGS. 1 and 2. The letter a is replaced by the letters b through j in the exemplary embodiments inFIGS. 3 through 11.

FIG. 3shows one alternative embodiment of hand-held power tool10b,including a rechargeable battery pack18bthat is installed via an interface device16bhaving an alternative embodiment. Rechargeable battery pack18bcorresponds in large part to rechargeable battery pack18aalready described. Hand-held power tool10bcorresponds in large part to hand-held power tool10aalready described. Hand-held power tool10bincludes a handle14bfor guiding hand-held power tool10bby an operator. Handle14bis configured as a U-shaped bow-type handle. Handle14bis supported on two areas of a housing12bof hand-held power tool10b.Hand-held power tool10balso includes a damping unit20bthat is provided for supporting handle14brelative to housing12bin a vibration-damped manner. Damping unit20bincludes at least one damping element38bthat is situated, at least partially, between handle14band housing12bof hand-held power tool10b.Damping unit20bincludes two damping elements38b.However, it is also conceivable for damping unit20bto include some other, arbitrary number of damping elements38b.One of damping elements38bis formed by a leaf spring, and the other of damping elements38bis configured as a toggle lever. Damping elements38bare schematically illustrated, and may also have a different configuration that appears meaningful to those skilled in the art, for example made of an elastomer, in particular of rubber, of foam, or configured as a spring element, in particular as a coil spring, as a swivel joint, as a linear bearing, as a hydraulic element, or as any arbitrary combination. Damping elements38bare connected to housing12band to handle14b.Handle14bis connected to housing12bvia damping elements38b.

Hand-held power tool10bincludes interface device16b,which corresponds to interface device16aalready described. Interface device16bis situated on handle14b.Interface device16bis provided for detachably connecting rechargeable battery pack18bto handle14b.Rechargeable battery pack18bis exchangeably connectable to hand-held power tool10bvia interface device16b.Interface device16bincludes two contact elements, not illustrated, for electrically coupling hand-held power tool10bto rechargeable battery pack18b.The contact elements of interface device16bhave a configuration that corresponds to contact elements of rechargeable battery pack18b.Interface device16bis provided for movably supporting rechargeable battery pack18bon handle14b.Interface device16bincludes a linear bearing for displaceably supporting rechargeable battery pack18bon handle14b.Hand-held power tool10balso includes at least one absorption unit30bthat is at least partially situated on interface device16b.Hand-held power tool10bincludes one absorption unit30b.However, hand-held power tool10bmay also include multiple absorption units30b.Absorption unit30bis provided for absorption of vibrations by at least one movably situated absorption mass. Rechargeable battery pack18bin an installed state forms the absorption mass.

FIG. 4shows another alternative embodiment of hand-held power tool10c,including a rechargeable battery pack18cthat is installed via an interface device16chaving another alternative embodiment. Hand-held power tool10cand rechargeable battery pack18ccorrespond in large part to hand-held power tool10aalready described, and of rechargeable battery pack18aalready described. Hand-held power tool10cincludes a handle14cfor guiding hand-held power tool10cby an operator. In addition, hand-held power tool10cincludes interface device16cthat is provided for mechanically and electrically coupling rechargeable battery pack18cto hand-held power tool10c.Interface device16cis situated on handle14c.Interface device16cincludes an intermediate housing48cthat is situated between handle14cand a housing12cof hand-held power tool10c.Handle14cis coupled to housing12cof hand-held power tool10c,on the one hand via a damping element38cof a damping unit20c,and on the other hand via a rechargeable battery damping unit26cand intermediate housing48cof interface device16c.

Damping element38cof damping unit20cis made of an elastomer and is elastically deformable. Damping element38cis fixedly connected to housing12cof hand-held power tool10cand to handle14c.Damping element38cis integrally joined to housing12cof hand-held power tool10cand to handle14c.Rechargeable battery damping unit26cincludes two rechargeable battery damping elements44c.However, it is also conceivable for rechargeable battery damping unit26cto have some other, arbitrary number of rechargeable battery damping elements44c.Rechargeable battery damping elements44care made of an elastomer. One of rechargeable battery damping elements44cis situated between handle14cand intermediate housing48c,and the other of rechargeable battery damping elements44cis situated between intermediate housing48cand housing12cof hand-held power tool10c.Intermediate housing48cis fixedly connected to handle14cand to housing12cof hand-held power tool10cvia rechargeable battery damping unit26c.Intermediate housing48cis integrally joined to handle14cvia rechargeable battery damping unit26cand to housing12cof hand-held power tool10c.Intermediate housing48cforms an interface for detachably and exchangeably fastening rechargeable battery pack18c.Intermediate housing48cis made of plastic.

Hand-held power tool10calso includes at least one adjustment unit34cfor adjusting at least one damping parameter of damping unit20c.Hand-held power tool10cincludes one adjustment unit34c.However, it is also conceivable for hand-held power tool10cto include some other, arbitrary number of adjustment units34c.Adjustment unit34cis provided for adjusting the damping parameter by the operator of hand-held power tool10c.Adjustment unit34cincludes at least one control element that is provided for being actuated by the operator for adjusting the damping parameter. Adjustment unit34cincludes one control element. However, multiple control elements are also conceivable. The control element of adjustment unit34cis formed by a rotary knob. However, other embodiments of the control element that appear meaningful to those skilled in the art, such as a configuration as a slider, as a keypad, or as a touchpad, are also conceivable. Adjustment unit34cis provided for mechanically adjusting the damping parameter. However, it is also conceivable for adjustment unit34cto be provided for electronically adjusting the damping parameter, for example via an electronics unit of hand-held power tool10c.

FIG. 5shows another alternative embodiment of hand-held power tool10d.Hand-held power tool10dcorresponds in large part to hand-held power tool10aalready described. Hand-held power tool10dincludes an interface device16dthat is provided for establishing an electrical and mechanical connection to a rechargeable battery pack18d.Interface device16dincludes at least one exchange interface unit22dthat is configured to be detachably connectable to rechargeable battery pack18dand to a handle14dof hand-held power tool10d,and/or to rechargeable battery pack18dand to a housing12dof hand-held power tool10d.Interface device16dincludes one exchange interface unit22dthat is configured to be detachably connectable to rechargeable battery pack18dand to a housing12dof hand-held power tool10d.However, interface device16dmay also include some other number of exchange interface units22dthat appears meaningful to those skilled in the art. Exchange interface unit22dis provided for electrically and mechanically coupling rechargeable battery pack18dto hand-held power tool10d.Exchange interface unit22dis exchangeably fastened to housing12dof hand-held power tool10d.

Exchange interface unit22dincludes at least one contact element, not illustrated, for electrically contacting at least one corresponding contact element of hand-held power tool10d.Exchange interface unit22dincludes two contact elements for electrically contacting two contact elements of hand-held power tool10d.However, some other number of contact elements is also conceivable. The contact elements of hand-held power tool10dand the contact elements of exchange interface unit22dare made of metal. Exchange interface unit22dincludes at least one further contact element, likewise not illustrated, for electrically contacting at least one corresponding contact element of rechargeable battery pack18d.Exchange interface unit22dincludes two further contact elements for electrically contacting two contact elements of rechargeable battery pack18d.However, some other number of contact elements is also conceivable. The contact elements of rechargeable battery pack18dand the further contact elements of exchange interface unit22dare made of metal. In an installed state, exchange interface unit22delectrically connects hand-held power tool10dto rechargeable battery pack18d.

Interface device16dalso includes at least one coupling unit40dthat is provided for mechanically coupling exchange interface unit22dto hand-held power tool10d,and/or exchange interface unit22dto rechargeable battery pack18d.Interface device16dincludes one coupling unit40d.However, multiple coupling units40dare also conceivable. Coupling unit40dis provided for detachably fastening exchange interface unit22dto hand-held power tool10d,and/or exchange interface unit22dto rechargeable battery pack18d.Coupling unit40dincludes at least one fastening element42d.Coupling unit40dincludes two fastening elements42dfor mechanically fastening exchange interface unit22dto housing12dof hand-held power tool10d.However, a different number of fastening elements42dis also conceivable. Fastening elements42dare each configured as a screw. In an installed state of exchange interface unit22d,fastening elements42dconfigured as screws each extend through a recess that is introduced into exchange interface unit22d,and are each screwed into a thread provided on housing12dof hand-held power tool10d.A head area of fastening elements42dconfigured as screws in each case rests against exchange interface unit22don a side facing away from housing12dof hand-held power tool10d,and thus prevents exchange interface unit22dfrom slipping out of place relative to housing12dof hand-held power tool10d.

In an installed state of exchange interface unit22d,rechargeable battery pack18dmay be mounted on exchange interface unit22d.For mounting rechargeable battery pack18don exchange interface unit22d,rechargeable battery pack18dis coupled to at least one further fastening element, not illustrated, of coupling unit40dthat is situated on exchange interface unit22d.The at least one further fastening element may be formed by a track, a detent element, a screw element, and/or in some other way that appears meaningful to those skilled in the art.

Interface device16dalso includes at least one auxiliary function unit28dthat provides an auxiliary function in addition to the electrical and mechanical coupling to rechargeable battery pack18d.Interface device16dincludes one auxiliary function unit28d.However, it is also conceivable for interface device16dto include multiple auxiliary function units28dwhich in particular have different configurations.

Auxiliary function unit28dis configured as an operating hours counter. Alternatively or additionally, auxiliary function unit28dmay be configured as a mounting, for example for a lighting unit, in particular for a flashlight, as a suction unit, as a control unit, in particular as an HMI interface, and/or in some other way that appears meaningful to those skilled in the art. Auxiliary function unit28dis electrically and mechanically connectable to hand-held power tool10dvia exchange interface unit22d.

Exchange interface unit22dmay be replaced by some other exchange interface unit, not illustrated, which likewise corresponds to the contact elements of hand-held power tool10d.Exchange interface unit22dand the other exchange interface unit correspond to one another in large part. Exchange interface unit22dand the other exchange interface unit are provided for corresponding to different rechargeable battery packs18d.Hand-held power tool10dmay thus be easily retrofitted for coupling to different rechargeable battery packs18d.Alternatively or additionally, auxiliary function unit28dmay be exchanged along with exchange interface unit22d,so that hand-held power tool10dmay be easily retrofitted for different applications.

FIG. 6shows a hand-held power tool10ealready described, and illustrated inFIG. 5, including an interface device16ehaving an alternative embodiment. Interface device16eincludes an exchange interface unit22ethat is configured to be detachably connectable to a rechargeable battery pack18eand to a housing12eof hand-held power tool10e.Exchange interface unit22eis provided for electrically and mechanically coupling rechargeable battery pack18eto hand-held power tool10e.Exchange interface unit22eis exchangeably fastenable to housing12eof hand-held power tool10e.Interface device16ediffers from interface device16d,already described, solely in the fastening of exchange interface unit22eto housing12eof hand-held power tool10e.

Interface device16eincludes a coupling unit40ethat is provided for mechanically coupling exchange interface unit22eto hand-held power tool10e.Coupling unit40eis provided for detachably fastening exchange interface unit22eto hand-held power tool10e,and exchange interface unit22eto rechargeable battery pack18e.Coupling unit40eincludes two fastening elements42e′,42e″ for mechanically fastening exchange interface unit22eto housing12eof hand-held power tool10e.However, a different number of fastening elements42eis also conceivable. One of fastening elements42e′ is configured as a screw. In an installed state of exchange interface unit22e,fastening element42e′ configured as a screw extends through a recess that is introduced into exchange interface unit22e,and is screwed into a thread that is provided on housing12eof hand-held power tool10e.A head area of fastening element42e′ configured as a screw rests against exchange interface unit22eon a side facing away from housing12eof hand-held power tool10e,and thus prevents exchange interface unit22efrom slipping out of place relative to housing12eof hand-held power tool10e.The other of fastening elements42e″ is formed by a projection that is situated on exchange interface unit22e,and which in an installed state of exchange interface unit22eengages with a hook element50e,having a corresponding configuration, situated on housing12eof hand-held power tool10e.For installation, in a first step, fastening element42e″ which is configured as a projection is suspended in hook element50esituated on housing12eof hand-held power tool10e.

Exchange interface unit22eis subsequently fixed to housing12eof hand-held power tool10evia fastening element42e′ configured as a screw.

FIG. 7shows a hand-held power tool10falready described, and illustrated inFIG. 5, including a further interface device16fhaving an alternative embodiment. Interface device16fdiffers from interface device16d,already described, solely in the fastening of an exchange interface unit22fto a housing12fof hand-held power tool10f.Interface device16fincludes a coupling unit40fthat is provided for mechanically coupling exchange interface unit22fto hand-held power tool10f.Coupling unit40fis provided for detachably fastening exchange interface unit22fto hand-held power tool10f.Coupling unit40fincludes two fastening elements42f′,42f″ for mechanically fastening exchange interface unit22fto housing12fof hand-held power tool10f.However, a different number of fastening elements42fis also conceivable. Fastening elements42f′,42f″ of coupling unit40fare formed by corresponding tracks. One of fastening elements42f′ is situated on exchange interface unit22f,and the other of fastening elements42f″ is situated on housing12fof hand-held power tool10f.For installing exchange interface unit22fon housing12fof hand-held power tool10f,exchange interface unit22fis shifted relative to housing12fof hand-held power tool10f,along a machining axis, corresponding fastening elements42f′,42f″ being engaged in a form-fit manner and moved relative to one another until reaching an end position. Coupling unit40fincludes a stop, not illustrated, that is provided for delimiting the relative movement of exchange interface unit22frelative to housing12fof hand-held power tool10fand for fixing the end position.

FIG. 8shows a detail of a hand-held power tool10galready described, and illustrated inFIG. 5, including a further interface device16ghaving an alternative embodiment. Interface device16gdiffers from interface device16d,already described, solely in the fastening of an exchange interface unit22gto a housing12gof hand-held power tool10g.Interface device16gincludes a coupling unit40gthat is provided for mechanically coupling and detachably fastening exchange interface unit22gto hand-held power tool10g.Coupling unit40gincludes at least one fastening element42g.Coupling unit40gincludes two fastening elements42g.However, a different number of fastening elements42gis also conceivable. Fastening elements42geach have a half-shell configuration. Fastening elements42gare each fastened via a screw to housing12gof hand-held power tool10g.In an installed state, each of the screws engages through a recess that is introduced into each of fastening elements42g,and is screwed into a thread in housing12gof hand-held power tool10g.Fastening elements42geach include a projection46gthat is provided for fastening rechargeable battery pack18gin a form-fit manner. In an installed state of rechargeable battery pack18g,projections46gof fastening elements42gengage with corresponding recesses that are introduced into housing12gof rechargeable battery pack18g,and fix rechargeable battery pack18grelative to exchange interface unit22gin a form-fit manner. However, other embodiments of coupling unit40gand in particular of fastening elements42g,in particular with regard to a number and/or configuration of projections46gor recesses, that appear meaningful to those skilled in the art are also conceivable. Exchange interface unit22galso includes a contact unit for electrically connecting rechargeable battery pack18gto hand-held power tool10gin an installed state. The contact unit has a configuration that is known to those skilled in the art, and is not shown here in greater detail.

FIG. 9shows a detail of a hand-held power tool10halready described, and illustrated inFIG. 5, including a further interface device16hhaving an alternative embodiment. Interface device16hdiffers from interface device16d,already described, solely in the fastening of an exchange interface unit22hto a housing12hof hand-held power tool10h.Exchange interface unit22his provided for electrically and mechanically connecting a rechargeable battery pack18hto hand-held power tool10h.Hand-held power tool10hincludes at least one safety release unit24hfor automatically releasing the fastening of exchange interface unit22hand/or of rechargeable battery pack18hwhen a limiting value of at least one safety parameter is exceeded. Hand-held power tool10hincludes one safety release unit24h.However, it is also conceivable for hand-held power tool10hto include multiple safety release units24h.Safety release unit24his provided for automatically releasing the fastening of exchange interface unit22hto housing12hof hand-held power tool10h,for example if hand-held power tool10hdrops. The safety parameter is formed by a force that acts on the fastening of exchange interface unit22hto housing12hof hand-held power tool10h.However, other embodiments of the safety parameter that appear meaningful to those skilled in the art are also conceivable. Safety release unit24hincludes at least one release element32hthat has an at least partially elastic configuration. Safety release unit24hincludes one release element32h.However, safety release unit24hmay also include multiple release elements32h.Release element32his formed by a spring. Release element32his formed by a leaf spring. Release element32halso forms a contact element for electrically connecting hand-held power tool10hto rechargeable battery pack18h.Release element32his situated on housing12hof hand-held power tool10h.However, it is also conceivable for release element32hto be situated on exchange interface unit22h.

Interface device16hincludes a coupling unit40hthat is provided for mechanically coupling exchange interface unit22hto hand-held power tool10h.Coupling unit40his provided for detachably fastening exchange interface unit22hto hand-held power tool10h,and exchange interface unit22hto rechargeable battery pack18h.Coupling unit40hincludes two fastening elements42h′,42h″ for mechanically fastening exchange interface unit22hto housing12hof hand-held power tool10h.However, a different number of fastening elements42his also conceivable. One of fastening elements42h′ is formed by a projection which is situated on exchange interface unit22h,and which in an installed state of exchange interface unit22hengages with a hook element50h,having a corresponding configuration, situated on housing12hof hand-held power tool10h.The other of fastening elements42h″ is formed by release element32h.

For installation, in a first step, fastening element42h′ configured as a projection is suspended in hook element50hsituated on housing12hof hand-held power tool10h.Exchange interface unit22his subsequently swiveled until exchange interface unit22hrests against fastening element42h″ that is formed by release element32h.Exchange interface unit22his pressed against fastening element42h″ formed by release element32h,until fastening element42h″ formed by release element32hlocks into a corresponding recess situated on exchange interface unit22h.In the installed state, exchange interface unit22his secured against swiveling back, and thus secured relative to housing12hof hand-held power tool10h,by an elastic force of fastening element42h″ that is formed by release element32h.Rechargeable battery pack18his fastened to exchange interface unit22hin a manner already described. If hand-held power tool10hdrops, fastening element42h″ that is formed by release element32hautomatically detaches from the corresponding recess in exchange interface unit22h,as the result of which rechargeable battery pack18hthat is coupled to exchange interface unit22his separated from hand-held power tool10h,which is thus intended to prevent damage to rechargeable battery pack18h.

FIG. 10shows a detail of a hand-held power tool10ialready described, and illustrated inFIG. 5, including a further interface device16ihaving an alternative embodiment. Interface device16idiffers from interface device16d,already described, solely in the fastening of an exchange interface unit22ito a housing12iof hand-held power tool10i.Exchange interface unit22iis provided for electrically and mechanically connecting a rechargeable battery pack18ito hand-held power tool10i.Hand-held power tool10iincludes at least one safety release unit24ifor automatically releasing the fastening of exchange interface unit22iand/or of rechargeable battery pack18iwhen a limiting value of at least one safety parameter is exceeded. Safety release unit24iis provided for automatically releasing the fastening of exchange interface unit22ion housing12iof hand-held power tool10i,for example if hand-held power tool10idrops. Safety release unit24iincludes at least one release element32ithat has an at least partially elastic configuration. Safety release unit24iincludes two release elements32i.Release elements32iare situated on housing12iof hand-held power tool10i.However, it is also conceivable for release element32ito be situated on exchange interface unit22i.Release elements32iare fixedly connected to housing12iof hand-held power tool10i.Release elements32iare integrally joined to housing12iof hand-held power tool10i.Release elements32ihave a one-piece configuration with housing12iof hand-held power tool10i.

Fastening elements42iand release elements32ihave a one-piece configuration. Release elements32iare formed by an area of housing12iof hand-held power tool10ihaving a reduced material thickness. Hook-shaped fastening elements42ithus have a configuration that is elastically deflectable for installation and for automatically releasing exchange interface unit22i.

FIG. 11illustrates release elements32jthat are formed not from an area of a housing12jof a hand-held power tool10jhaving a reduced material thickness, but, rather, from an elastically deformable material that is integrally joined to housing12jof hand-held power tool10jand to fastening elements42j.Release elements32jare made of an elastomer. Release elements32jare configured as a PTE bridge. Release elements32jare injection-molded onto housing12jof hand-held power tool10jand onto each of fastening elements42j.Release elements32jconnect each of fastening elements42jto housing12jof hand-held power tool10j.