EP2794196A1

EP2794196A1 - Electrically operable machine tool

Info

Publication number: EP2794196A1
Application number: EP12790497.7A
Authority: EP
Inventors: Cornelius Boeck; Daniel BARTH; Joachim Schadow; Sinisa Andrasic
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2011-12-23
Filing date: 2012-11-12
Publication date: 2014-10-29
Anticipated expiration: 2032-11-12
Also published as: EP2794196B1; CN104302450B; US20150014013A1; WO2013092002A1; CN104302450A; DE102011089719A1

Abstract

The invention proceeds from an electrically operable machine tool, in particular an electrically operable angle grinder, with at least one handle housing (14a; 14b; 14c) and with at least one switching unit (16a; 16b; 16c) having at least one operating element (18a; 18b; 18c) mounted on one side. The invention states that the operating element (18a; 18b; 18c) is arranged on a side (20a; 20b; 20c) of the handle housing (14a; 14b; 14c) which faces the palm surface of a user's hand when the handle housing (14a; 14b; 14c) is gripped for proper manipulation.

Description

description

Electrically operated machine tool

State of the art

From DE 197 07 215 A1 an electrically operable machine tool, in particular an angle grinder is already known which comprises a handle housing and a switching unit which has a control element mounted on one side for actuating a switching element.

Disclosure of the invention

The invention is based on an electrically operable machine tool, in particular an electrically operated angle grinder, with at least one handle housing and with at least one switching unit, which has at least one operating element mounted at least on one side.

It is proposed that the operating element is arranged on one side of the handle housing, which faces when gripping the handle housing for a proper handling of a palm of a hand of a user hand. An "electrically operable machine tool" is to be understood here as meaning, in particular, a machine tool which has at least one drive unit which can be operated by means of electrical energy. portable machine tool "is to be understood here in particular a machine tool for machining workpieces, transported by an operator transport machine can be. In particular, the portable power tool has a mass which is less than 40 kg, preferably less than 10 kg and particularly preferably less than 7 kg. The portable power tool is particularly preferably designed as an angle grinder. However, it is also conceivable that the portable power tool has another, a skilled person appear appropriate design, such as a design as a drill and / or chisel, as a drill, as a saber saw, as a jigsaw, as a hedge trimmer, etc. Under a "handle housing "should be understood here in particular at least one housing or at least one housing part area, which is largely decoupled from a storage of a drive and / or output unit of the machine tool, wherein at least a handle portion of the housing or the housing portion, in particular a handle-shaped area - formed housing part area, from an operator to a handling of

Machine tool with at least one hand at least largely umgreifbar. The term "largely encompassable" should here in particular a

Graspability of a component or a component region by means of a hand of an operator along at least more than 70%, preferably more than 80% and particularly preferably more than 90% of a total extension of a plane extending in at least substantially perpendicular to a longitudinal extension direction of the component or the component region The overall extent of the overall circumference is in particular smaller than 40 cm, preferably smaller than 30 cm and particularly preferably smaller than 25 cm. Preferably, when gripping the component or the component area, a palm and finger inner surfaces of the operator's hand are greater than 70%, preferably greater than 80% and particularly preferably greater than 90% of the total extension of the total outer circumference on the overall outer circumference, at least along a distance. Preferably, the handle housing is formed separately from a drive housing of the machine tool, which is intended to receive the drive and / or an output unit for supporting drive and / or output bearing forces. However, it is also conceivable that the handle housing and the drive housing are integrally formed. Preferably, the handle housing has a handle-shaped handle portion on. The term "stem-shaped grip region" is intended here to define, in particular, a housing partial region of the handle housing which, in a longitudinal sectional plane in which the main extension direction of the machine tool extends along a direction extending at least substantially perpendicularly to the main extension direction, has a maximum extent, in particular less than 10 cm, preferably smaller than 8 cm and particularly preferably smaller than 6 cm, wherein at least one operating surface of the handle housing is arranged in the housing part region of the handle housing an angle of less than 10 °, preferably less than 8 ° and more preferably less than 6 ° relative to each other inclined straight lines formed by an outer contour of the housing portion of the handle housing The gripping area is in particular at least an angle smaller than 60 °, preferably smaller than 40 ° and particularly preferably smaller than 30 ° relative to a

Main extension direction of the machine tool arranged inclined. Preferably, the operating element is arranged on the handle-shaped handle portion of the handle housing. Preferably, the stielformige grip area, along a rotation axis of a drive element, in particular an armature shaft, a drive unit of the machine tool and in particular along the

Main direction of extension of the machine tool, arranged behind the drive unit. In addition, it is conceivable that the handle housing in addition to the handle-shaped handle portion has a bow-shaped portion which is integrally formed on the handle-shaped handle portion. The bow-shaped portion may preferably have an L-shaped configuration which extends starting from an end of the handle-shaped housing facing away from the handle-shaped handle portion L-shaped in the direction of the Anbin- dungsbereichs. Particularly preferably, the handle housing comprises at least two handle housing shell elements which are connectable to one another in a connecting plane. Thus, the handle housing preferably has a shell construction. However, it is also conceivable that the handle housing has a pot construction.

The term "switching unit" should in particular define a unit which has at least one component, in particular the operating element, which is directly from an operator is operable and which is intended to influence and / or change by means of an actuation and / or by an input of parameters, a process and / or a state of a unit coupled to the switching unit. The operating element is preferably provided for actuating at least one switching element of the switching unit. Particularly preferably, the operating element is designed as a pawl element. A "pawl element" is to be understood here as meaning, in particular, a control element which has a longitudinal extension along a longitudinal extension direction of the operating element, which is greater than a transverse extent of the at least substantially perpendicular to the longitudinal extension direction

Operating element which extends at least substantially transversely to a main direction of movement of the operating element. In this case, "substantially transversely" is to be understood as meaning, in particular, an alignment of a direction and / or an axis relative to a reference direction and / or a reference axis, the orientation of the direction and / or the axis being at least different from an at least substantially parallel one Orientation to the reference direction and / or to the reference axis is and in particular is skewed or at least substantially perpendicular to the reference direction and / or to the reference axis Preferably, a maximum longitudinal extent of the pawl element is at least 2 times greater, preferably at least 4 times greater, and more preferably at least 6 In particular, the pawl element has a maximum longitudinal extent which is greater than 3 cm, preferably greater than 6 cm and particularly preferably greater than 8 cm , on the one Operator at least three fingers to actuate the

Ratchet element can arrange and which has at least one along the longitudinal direction of the pawl element extending longitudinal extent, which is greater than 5 cm. The term "substantially perpendicular" is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in one plane, including an angle of 90 ° and the angle a maximum deviation of, in particular, less than 8 °, advantageously less than 5 °, and particularly advantageously less than 2 °, Preferably, the switching unit is provided by means of an actuation of the operating element to actuate the switching element to open or close a circuit to a power supply of at least one drive unit of the machine tool. Thus, the switching unit is preferably provided to enable commissioning or deactivation of the machine tool. The term "provided" should be understood to mean in particular specially designed and / or specially equipped The switching element is preferably formed by a mechanical, electrical and / or electronic switching element

Bearing axis of a component, in particular of the operating element to define, in which the bearing axis is arranged at least at one end or at an edge region of a control surface of the component and in particular during a course of the bearing axis through the component viewed a distance along a Längserstre- ckungsrichtung of the component to the end of the component or to the edge region of the control surface, which is smaller than 30 mm, preferably smaller than 20 mm and particularly preferably smaller than 10 mm, wherein the bearing axis is preferably different to a central bearing axis, the same distances, as viewed along a Having at least substantially perpendicular to the bearing axis direction, to two opposite ends of the component. However, it is also conceivable that the bearing axis extends outside of the component and the component is arranged movably on and / or along the bearing axis by means of bearing elements arranged on the component, in particular movably arranged, such as lever bearing elements. In addition, it is also conceivable that the control element is mounted on several sides, such as in a translationally guided control element, which is guided on two opposite sides in guide elements of a translation guide unit. Other arrangements of a bearing axis or a plurality of bearing axes of the operating element, which appear appropriate to a person skilled in the art, are likewise conceivable. In this case, the term "palm of the hand" should in particular define a metacarpal surface of a hand of an operator, whereby the metacarpal bone surface is in particular different from the inner surfaces of the fingers Operating element on the side of the handle housing, the a gripping the handle housing to a proper handling of a palm of a hand of an operator faces, a comfortable operation of the operating element can be achieved with a palm of the hand. Thus, a comfortable application of force over a large area can be achieved in the control.

Furthermore, it is proposed that the electrically operable machine tool comprises at least one output housing, wherein the operating element is arranged in each operating state on one side of the handle housing, which is different from a further one of the output side of the output housing side facing the handle housing. A "driven side" is to be understood here as meaning, in particular, a side of the electrically operable machine tool from which a spindle of the output unit extends out of the driven housing of the electrically operable machine tool In particular, a comfortable operability of an electrically operable machine tool can be advantageously achieved which has a drive housing rotatably mounted relative to a drive housing of the electrically operable machine tool.

Advantageously, the operating element is mounted pivotably about a pivot axis which is arranged outside a control surface area of the operating element. A "control surface area" is to be understood here as meaning, in particular, a region of the operating element which, viewed along a longitudinal extension direction or along at least one substantially transverse to a main movement direction of the operating element, is delimited by at least two planes arranged relatively spaced from one another and in which The pivot axis can thus, viewed along a direction of longitudinal extension of the operating element, be arranged laterally next to the operating surface area, in front of or behind the operating surface area a leverage to a comfortable operation of the control element can be used to a low actuation and a small holding force to achieve an operation or to hold the operating element.

Particularly preferably, the pivot axis, viewed along a longitudinal extension direction of the operating element, is arranged at a distance relative to an operating surface of the operating element. Here, the pivot axis, viewed along a longitudinal extension direction of the operating element, be arranged in front of or behind the control surface. The pivot axis of the operating element particularly preferably extends at least substantially perpendicular to the connecting plane of the handle housing, in which the

Handgriffgehäuseschalenelemente are connected to each other or abut each other. By means of the embodiment according to the invention, advantageously, a compact arrangement of the operating element on the handle housing can be achieved.

Advantageously, the pivot axis is arranged on a connecting region of the handle housing facing the end of the operating element. The term "connection region" is intended here to define, in particular, a region of the handle housing via which the handle housing is connected to the drive housing in a form-fitting, force-locking and / or material-locking manner or with which the handle housing rests directly against the drive housing End of the control element "should be understood here in particular an arrangement of points of the control element with respect to a center plane of the control element, which extends at least substantially perpendicular to the longitudinal direction of the control element and arranged at least substantially evenly spaced from each other along the longitudinal extension direction of the control element Ends of the operating element is arranged, wherein all points of the operating element, starting from the center plane in the direction of the connection region, viewed along the longitudinal extension direction of the operating element, angeor dnet are considered to be facing the connection area. It can be advantageously achieved ergonomic operation of the control. An operator can actuate the operating element particularly comfortably when grasping the handle housing by means of a palm of the hand of the operator. In an alternative embodiment of the electrically operable machine tool, the pivot axis is arranged on an end of the operating element remote from a connection region of the handle housing. As a result, an ergonomic operability of the operating element can also advantageously be achieved. Furthermore, a pivotable storage is advantageous largely insensitive to contamination of a bearing.

In a further alternative embodiment of the electrically operable machine tool, the operating element is mounted in a translationally movable manner. In this case, a movement axis of the operating element preferably extends at least substantially parallel to the connecting plane of the handle housing. It can be advantageously achieved a precise guidance of the operating element during an operation.

Particularly preferably, a movement axis of the operating element extends at least substantially transversely to a longitudinal extension direction of the handle housing. Particularly preferably, the movement axis extends in a translatory mounting of the operating element in the connecting plane of the handle housing. Preferably, the movement axis extends at a pivotable mounting of the operating element at least substantially perpendicular to the connection plane of the handle housing. Thus, advantageously, a main movement direction of the operating element can be achieved, which extends in the connection plane of the handle housing.

In addition, it is proposed that an operating surface of the operating element, after an actuation, be at least partially at least substantially flush with an outer surface of the handle housing. In particular, an arrangement of the operating surface after an actuation of the operating element, in particular according to one, is intended to mean by "at least substantially flush"

Swiveling the operating element into the handle housing, can be understood, wherein the operating surface, viewed from a space enclosed by the handle housing space in the direction of the outer surface of the handle housing, along a at least substantially perpendicular to the outer surface of the handle housing viewed direction, a maximum of 2 mm on the Außenflä - che extends and particularly preferably extends to the maximum extent to the outer surface of the handle housing. Thus, the operating surface of the operating element does not extend beyond the outer surface of the handle housing after actuation. It can advantageously be achieved as a result of a complete immersion of the operating element in the handle housing a compact arrangement of the operating element in an actuated state. Furthermore, an operator can advantageously be optically signaled that the operating element is in an actuated state. Furthermore, it is proposed that the electrically operable machine tool comprises at least one switch-on blocking device which is provided to prevent a movement of the operating element as a consequence of an unintentional actuation of the operating element. A "switch-on inhibitor" is to be understood here as meaning in particular a unit which is intended to at least in one operating state, a movement of a movably mounted component, in particular of the operating element, along at least one path and / or to prevent at least one axis by means of a mechanical, electrical and / or electronic lock as far as possible However, it is also conceivable for the switch-on blocking unit to be prevented, at least in an operating state by means of an electromagnetic force effect, in an operating state by means of a mechanical lock nd / or a permanent magnetic force, such as by means of sliding magnets on the control element largely prevents movement of the control element. By means of the invention

Design can advantageously largely prevent inadvertent startup of the machine tool.

Advantageously, the Einschaltsperreinheit on at least one release element, which comprises an actuating portion which is at least partially disposed laterally next to a control surface of the control element. The term "laterally beside" is to be understood here in particular as an arrangement of the actuating region of the release element relative to the operating element, the actuating region being viewed along a direction extending at least substantially perpendicular to the lateral wall region, in particular starting from the side wall portion viewed in a direction away from the handle housing direction, is arranged spaced relative to the control element. Advantageously, an ergonomically sensible arrangement of the release element, in particular of the actuation region, can be achieved.

It is also proposed that the operating element has a maximum longitudinal extension which corresponds to at least 60% of a maximum longitudinal extension of the handle-shaped handle-shaped housing. In particular, a maximum longitudinal extent of the operating element corresponds in particular to more than 75%, preferably more than 80% and particularly preferably more than 90

% of the maximum longitudinal extent of the handle-shaped handle portion of the handle-shaped housing. The maximum longitudinal extension of the operating element and the maximum longitudinal extension of the handle-shaped handle-shaped handle portion extend in a mounted state of the operating element and the handle housing along a in the connecting plane of the handle housing, in which the handle housing shell elements abut each other in an assembled state, respectively Direction that extends at least substantially transversely to the main direction of movement of the operating element. Advantageously, a large usable operating surface of the control element can be achieved. Thus, advantageously, a comfortable to use control element can be created.

In addition, it is proposed that the operating element has a maximum transverse extent, which corresponds to at least 60% of a maximum transverse extent of the handle-shaped handle portion of the handle-shaped housing. The term "maximum transverse extent" is intended here in particular a maximum extent of a component or a housing, in particular a multi-part housing in an assembled state, along at least substantially perpendicular to the main direction of extension of the machine tool and at least substantially transversely at least one main direction of movement of the operating element Preferably, a maximum transverse extent of the operating element corresponds to at least more than 65%, preferably more than 70% and particularly preferably more than 75% of the maximum transverse extent of the handle-shaped handle-shaped handle-shaped housing - An ergonomically sensible design of the operating element can be achieved. Thus, advantageously a high level of operating comfort can be achieved.

Furthermore, the invention is based on a machine tool switching device of a machine tool according to the invention, wherein the machine tool switching device comprises at least the switching unit. In addition, it is conceivable that the machine tool switching device has at least one bearing unit to a movable mounting of the pawl element. The bearing unit can in this case be designed as a translational bearing unit, as a rotation bearing unit or a combination of a translational bearing unit and a rotation bearing unit, such as a lever gear bearing unit, etc. It can thus be advantageously achieved a simple retrofitting already existing machine tools with the switching unit according to the invention.

The inventive, electrically operable machine tool and / or the machine tool switching device according to the invention should / should not be limited to the application and embodiment described above. In particular, the electrically operable machine tool according to the invention and / or the machine tool switching device according to the invention can have a number deviating from a number of individual elements, components and units specified herein for fulfilling a mode of operation described herein.

drawing

Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

1 shows an inventive, electrically operable machine tool in a schematic representation, 2 shows a detailed view of a control element arranged on a handle housing of the electrically operable machine tool according to the invention, in a schematic illustration,

3 shows a further detailed view of the control element arranged on the handle housing in a schematic illustration,

4 shows a detailed view of a control element arranged on a handle housing of an alternative operating device according to the invention, which can be operated electrically, in a schematic illustration and FIG

5 shows a detailed view of a control element arranged on a handle housing of a further alternative inventive, electrically operable machine tool in a schematic representation.

Description of the embodiments

FIG. 1 shows an electrically operable machine tool 10a which is formed by a portable machine tool 10a designed as an electrically operable angle grinder 12a. The portable power tool 10a comprises at least one handle housing 14a and at least one switching unit 16a, which has at least one control element 18a mounted at least on one side. The operating element 18a is arranged on a side 20a of the handle housing 14a, which, when the handle housing 14a is gripped around, is used for the proper handling of a palm of a hand of an operator. Here, the portable power tool 10a has at least one

Machine tool switching device comprising at least the switching unit 16a. The operating element 18a is arranged on a handle-shaped grip area 54a of the handle housing 14a. The handle-shaped handle portion 54a of the handle housing 14a constitutes a main handle of the portable power tool 10a. Here, the formed by the stielformigen handle portion 54a extends

Main handle at least substantially starting from a connection region 34a of the handle housing 14a in a direction away from the connection region 34a direction to a side 60a of the handle housing 14a, on which a cable of the electrically operable angle grinder 12a formed portable power tool 10a is arranged for power supply. Of the Stalk-shaped grip portion 54a of the handle housing 14a is inclined by an angle smaller than 30 ° relative to a main extension direction 62a of the handle housing 14a or to a main extension direction 64a of the portable power tool 10a.

The portable power tool 10a formed as the electrically operable angle grinder 12a further includes a guard unit 66a, a drive housing 68a, and an output housing 22a. The operating element 18a is in this case arranged in each operating state of the portable power tool 10a on the side 20a of the handle housing 14a, which from a further one

Output side 24a of the output housing 22a facing side 26a of the handle housing 14a is different. From the output housing 22a extends on the output side 24a of the output housing 22a as a spindle (not shown here) formed output shaft of an output unit 70a of the portable power tool 10a, to which a machining tool

72a for machining a workpiece (not shown here) can be fixed. The machining tool 72a is designed as a grinding wheel. However, it is also conceivable that the machining tool 72a is formed as a separating or polishing wheel. The portable power tool 10a includes the drive housing 68a for receiving a drive unit 74a of the portable one

Machine tool 10a and the output housing 22a to a recording of the output unit 70a. The drive unit 74a is provided to rotate the machining tool 72a via the output unit 70a. The machining tool 72a can in this case by means of a fastener (not shown here) for machining a workpiece rotatably connected to the spindle. Thus, the machining tool 72a can be rotationally driven in an operation of the portable power tool 10a. The output unit 70a is designed as a pinion and rotating

drivable drive element (not shown here in detail) of the drive unit 74a connected in a manner already known to a person skilled in the art with the drive unit 74a. In addition, an auxiliary handle 76a is arranged on the output housing 22a. The auxiliary handle 76a extends in an am

Output housing 22a mounted state transverse to the main direction of extent 64a of the portable power tool 10a. FIG. 2 shows a detailed view of the operating element 18a of the switching unit 16a arranged on the handle housing 14a. The operating element 18a has a curved outer contour. In this case, the operating element 18a has a convex outer contour relative to the handle housing 14a. Furthermore, the operating element 18a is mounted pivotably about a pivot axis 28a of the operating element 18a, which is arranged outside a control surface area 30a of the operating element 18a. The pivot axis 28a of the operating element 18a extends at least substantially perpendicular to the main extension direction 62a of the handle housing 14a or at least substantially perpendicular to the main extension direction 64a of the portable power tool 10a. Here goes the

Pivot axis 28a at least substantially perpendicular to a connection plane of the handle housing 14a. In the connection plane of the handle housing 14a, two handle housing shell elements 78a, 80a of the handle housing 14a are connected together in an assembled state. The pivot axis 28a is arranged on a connecting region 34a of the handle housing 14a facing the end 36a of the operating element 18a. Thus, the operating element 18a is pivotally mounted on the end 36a facing the connection region 34a of the handle housing 14a. The operating element 18a is pivotally mounted about the pivot axis 28a, which is arranged outside a control surface area 30a of the operating element 18a. The pivot axis 28a, viewed along a longitudinal extension direction of the operating element 18a, arranged relative to a control surface 32a of the operating element 18a spaced. The longitudinal extension direction of the operating element 18a extends in the connecting plane of the handle housing 14a.

Furthermore, a movement axis 40a of the operating element 18a designed as the pivot axis 28a runs at least substantially transversely to a longitudinal extension direction of the handle housing 14a. The longitudinal extension direction of the handle housing 14a extends at least substantially parallel to the main extension direction 62a of the handle housing 14a or at least in the

Substantially parallel to the main direction of extent 64a of the portable power tool 10a. The operating surface 32a of the operating element 18a extends in an unactuated state of the operating element 18a, viewed along an at least substantially perpendicular to an outer surface 42a of the handle housing 14a extending direction, starting from an enclosed by the handle housing 14a interior of the handle housing 14a in one of the handle housing 14a opposite direction over the outer surface 42a of time. Furthermore, the operating surface 32a of the operating element 18a, after an actuation of the operating element 18a, is at least partially at least substantially flush with the outer surface 42a of the handle housing 14a. Thus, the operating element 18a is pivoted as a result of actuation in the direction of the handle housing 14a in the handle housing 14a about the pivot axis 28a (Figure 3). In this case, the operating surface 32a is convexly convexed relative to the handle housing 14a. Thus, the operating surface 32a is formed in correspondence with the outer surface 42a of the handle-shaped handle portion 54a of the handle housing 14a.

Furthermore, the portable power tool 10a has at least one switch-on blocking unit 44a, which is intended to prevent a movement of the operating element 18a due to an unintentional actuation of the operating element 18a. The Einschaltsperreinheit 44a has at least one release element 46a, which comprises an actuating portion 48a, which is at least partially disposed laterally next to a control surface 32a of the control element 18a. The release element 46a is arranged on the handle housing 14a in a region of an end of the handle housing 14a facing the connection region 34a. In addition, the release member 46a is disposed entirely outside the handle-shaped grip portion 54a. In this case, at least the actuating region 48a of the release element 46a is arranged outside the handle-shaped grip region 54a. The release element 46a is pivotally mounted about at least one release movement axis 82a. The release movement axis 82a is thus designed as a release pivot axis. The release element 46a has at least the release movement axis 82a, which extends in a plane extending at least substantially perpendicular to the pivot axis 28a of the operating element 18a. Thus, the release movement axis 82a extends at least substantially parallel to the connection plane of the handle housing 14a. Furthermore, the release movement axis 82a runs at least substantially transversely to the pivot axis 28a of the operating element 18a.

Furthermore, the switch-on blocking unit 44a has at least one further release element 84a. The further release element 84a is likewise in the region of the end of the handle housing facing the connection region 34a

14a arranged on the handle housing 14a. In addition, the further release item ment 84a also completely outside of the handle-shaped handle portion 54a arranged. In this case, at least one actuating region 86a of the further release element 84a is arranged outside the handle-shaped grip region 54a. The further release element 84a is arranged mirror-symmetrically to the release element 46a. Thus, the further release element 84a at least the actuating portion 86a, which is at least partially disposed laterally adjacent to the control surface 32a of the control element 18a with respect to a at least substantially perpendicular to the pivot axis 28a of the control element 18a extending plane mirror symmetry to the actuating portion 48a of the release element 46a. The further release element 84a is pivotally mounted about at least one further release movement axis 88a. However, it is also conceivable that the release element 46a and the further release element 84a

is mounted translationally movable on the handle housing 14a. The further release movement axis 88a is designed as a release pivot axis. The further release movement axis 88a in this case extends in a plane extending at least substantially perpendicular to the pivot axis 28a of the operating element 18a. Thus, the further release movement axis 88a extends at least substantially parallel to the connection plane of the handle housing 14a. Furthermore, the further release movement axis 88a runs at least substantially transversely to the pivot axis 28a of the operating element 18a. The others

Release movement axis 88a extends at least substantially parallel to the release movement axis 82a of the release element 46a. The release element 46a and the further release element 84a are mounted so that they can move relative to one another. However, it is also conceivable that the release element 46a and the further release element 84a are rigidly coupled together.

Furthermore, the portable power tool 10a has at least one movement-dependent unit 90a, which couples the release element 46a and the further release element 84a to one another in a mounted state, at least in an assembled state. The movement dependency unit 90a is provided to move the release member 46a and the further release member 84a in opposite directions due to an operation of the release member 46a or the further release member 84a. Thus, the releasing member 46a and the further releasing member 84a become movable by means of the movement dependency unit 90a due to an operation of the releasing member

46a or the further release element 84a always moves together. in this connection For example, the release element 46a and the further release element 84a are moved in a direction facing the handle housing 14a by means of the movement-dependent unit 90a in a direction facing the handle housing 14a as a result of actuation of the release element 46a or the further release element 84a. As a result of actuation of the release element 46a or of the further release element 84a, forces are transmitted by means of the movement-dependent unit 90a between the release element 46a and the further release element 84a, which cause a mutually dependent movement of the release element 46a and the further release element 84a.

In an alternative embodiment of the portable power tool 10a, which is not shown here, it is conceivable that the portable power tool 10a has an electrical and / or electronic start-up lock in addition to the power-lock unit 44a, which, for example, first energizes the drive unit 74a as soon as a sensor unit of the portable power tool 10a a concern of another hand of an operator on the auxiliary handle 76a in addition to the presence of a hand on the handle housing 14a, in particular the handle-shaped handle portion 54a, sensed and thus via a control and / or regulating unit of the portable power tool 10a, which evaluates the sensed characteristics and processed, the electrical and / or electronic interlock disabled to allow commissioning of the portable power tool 10a.

Furthermore, the switching unit 16a has a spring element for forming a dead man's switching function (not shown here in detail). The spring element is provided, as a result of an action of a spring force on the operating element 18a, to enable a movement of the operating element 18a after the action of an operating force of an operator on the operating element 18a has been removed in a direction away from the handle housing 14a into an initial position of the operating element 18a , In this case, the spring element is formed by a switching element of a switching element (not shown here in detail) with a spring force acting on the spring element of the switching element. Thus, the spring element exerts a spring force on the control element via the switch plunger. As a result, the operating element 18a is moved in the direction away from the handle housing 14a after the action of an operating force of an operator has been removed. As a result of the movement of the Serving element 18a in the direction away from the handle housing 14a direction, the operating element 18a is moved to an initial position.

The operating element 18a has a maximum transverse extent 56a which extends over at least a majority of at least one maximum transverse extent 58a of the handle-shaped handle portion 54a of the handle housing 14a. The maximum transverse extent 56a of the operating element 18a corresponds to at least 60% of the maximum transverse extent 58a of the handle-shaped grip area 54a of the handle housing 14a. In this case, a ratio of the maximum transverse extent 56a of the operating element 18a to the maximum transverse extent 58a of the handle-shaped grip area 54a of the handle housing 14a is at least greater than 1 to 2.5. The maximum transverse extent 56a of the operating element 18a extends along a direction which extends at least substantially perpendicular to the main extension direction 62a of the handle housing 14a or at least substantially perpendicular to the main extension direction 64a of the portable power tool 10a and at least substantially transversely to at least one main movement direction of the operating element 18a. Thus, the maximum transverse extent 56a of the operating element 18a extends at least substantially parallel to the pivot axis 28a of the operating element 18a. The maximum transverse extent 58a of the handle-shaped handle portion 54a of the handle housing 14a also runs along the at least substantially perpendicular to the main extension direction 62a of the handle housing 14a or at least substantially perpendicular to the main extension direction 64a of the portable power tool 10a and at least substantially transversely at least to a main motion. direction of movement of the operating element 18a extending direction.

Furthermore, the operating element 18a has a maximum longitudinal extent 50a which extends over at least a majority of a maximum longitudinal extension 52a of the handle-shaped handle portion 54a of the handle housing 14a. In this case, the maximum longitudinal extension 50a of the operating element 18a corresponds to at least 60% of the maximum longitudinal extension 52a of the handle-shaped handle region 54a of the handle housing 14a. A ratio of the maximum longitudinal extent 50a of the operating element 18a to the maximum longitudinal extent 52a of the handle-shaped handle portion 54a of the handle housing 14a is at least greater than 1 to 1, 4. The maximum longitudinal extension 50a of the operating element 18a extends in an assembled state of the operating element 18a on the handle housing 14a along a direction extending in the connecting plane of the handle housing 14a direction, which extends at least substantially transverse to a main direction of movement of the operating element 18a. Thus, the maximum longitudinal extension 50a of the operating element 18a extends along a direction which extends at least substantially perpendicular to the pivot axis 28a of the operating element 18a. Furthermore, the maximum longitudinal extent 50a of the operating element 18a is derived from a bearing area (not shown here) in the handle housing 14a of the operating element 18a, through which the pivot axis 28a of the operating element 18a extends, up to the end 38a of the connecting portion 34a of the handle housing 14a Operating element 18a (Figure 2). The maximum longitudinal extent 52a of the handle-shaped handle portion 54a of the handle housing 14a also extends along the at least substantially perpendicular to the pivot axis 28a of the operating element 18a extending direction.

FIGS. 4 and 5 show alternative embodiments. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, the letters a to c are added to the reference numerals of the embodiments. The following description is limited essentially to the differences from the first exemplary embodiment in FIGS. 1 to 3, wherein reference can be made to the description of the first exemplary embodiment in FIGS. 1 to 3 with regard to components, features and functions remaining the same.

FIG. 4 shows a detailed view of an operating element 18a of a switching unit 16b of the electrically operable machine tool 10b arranged on a handle housing 14b of an electrically operable machine tool 10b. The electrically operable machine tool 10b has an at least essentially analogous structure to the electrically operable machine tool 10a

Figure 1 on. Thus, with regard to a description or features of the electrically operable machine tool 10b of the further exemplary embodiment, reference may be made at least essentially to the description of FIG. The electrically operable machine tool 10b is also designed as a portable machine tool 10b, which is formed by an electrically operable angle grinder 12b. The operating element 18b is arranged on a side 20b of the handle housing 14b, which, when the handle housing 14b is gripped around, is used for the proper handling of a palm of a hand of an operator. In this case, the operating element 18b of the switching unit 16b is mounted pivotably about a pivot axis 28b of the operating element 18b, which is arranged outside a control surface area 30b of the operating element 18b. The pivot axis 28b of the operating element 18b extends at least substantially perpendicular to a main extension direction 62b of the handle housing 14b or at least substantially perpendicular to a main extension direction

64b of the portable power tool 10b. Here, the pivot axis 28b extends at least substantially perpendicular to a connecting plane of the handle housing 14b. The pivot axis 28b is arranged on an end 38b of the control element 18b facing away from a connection region 34b of the handle housing 14b. Thus, the operating element 18b is at the

Anbindungsbereich 34b of the handle housing 14b facing away from the end 38b pivotally mounted. Here, the operating element 18b is pivotally mounted about the pivot axis 28b, which is arranged outside of a control surface area 30b of the control element 18b. The pivot axis 28b, viewed along a longitudinal extension direction of the operating element 18b, is arranged at a distance relative to an operating surface 32b of the operating element 18b. The longitudinal extension direction of the operating element 18b extends in the connecting plane of the handle housing 14b. Furthermore, a movement axis 40b of the operating element 18b formed as the pivot axis 28b extends at least substantially transversely to a longitudinal extension direction of the handle housing

14b. An operating surface 32b of the operating element 18b extends in an unactuated state of the operating element 18b, viewed along at least substantially perpendicular to an outer surface 42b of the handle housing 14b, starting from an interior of the handle housing 14b enclosed by the handle housing 14b and facing away from the handle housing 14b Direction across the outer surface 42b away. Furthermore, the operating surface 32b of the operating element 18b, after an actuation of the operating element 18b, at least partially terminates at least substantially flush with the outer surface 42b of the handle housing 14b. Thus, the operating element 18b due to an actuation in the direction of the handle housing 14b in the

Handle housing 14b pivoted about the pivot axis 28b. FIG. 5 shows a detailed view of an operating element 18c of a switching unit 16c of the electrically operable machine tool 10c arranged on a handle housing 14c of an electrically operable machine tool 10c. The electrically operable machine tool 10c has an at least substantially similar structure to the electrically operable machine tool 10a

Figure 1 on. Thus, with regard to a description or characteristics of the electrically operable machine tool 10c of the further exemplary embodiment, reference may be made at least essentially to the description of FIG. The electrically operable machine tool 10c is also designed as a portable machine tool 10c, which is formed by an electrically operable angle grinder 12c.

The operating element 18c is arranged on a side 20c of the handle housing 14c, which, when the handle housing 14c is gripped around, faces the proper handling of a palm of a hand of an operator's hand. In this case, the operating element 18c is mounted in a translationally movable manner on the handle housing 14c. A movement axis 40c of the operating element 18c runs at least substantially transversely to a longitudinal extension direction of the handle housing 14c. Further, the movement axis 40c of the operating member 18c extends in a connecting plane of the handle housing 14c. The

Operating element 18c is mounted on two sides. In this case, a guide bearing element (not shown here in detail) of the switching unit 16c is arranged on an end 36c of the operating element 18c facing a connection region 34c of the handle housing 14c. Furthermore, a further guide bearing element (not shown here in detail) of the switching unit 16c is disposed on an end 38c of the operating element 18c facing away from the connection region 34c of the handle housing 14c. However, it is also conceivable that the operating element 18c is mounted or guided movably on the handle housing 14c in another manner that appears appropriate to a person skilled in the art. The movement axis 40c is formed by the guide bearing element. Another movement axis 92c of the

Operating element 18c is formed by the further guide bearing element. Here, the guide bearing element and the further guide bearing element may be formed as linear guide elements or as joint guide elements, which allow a translational movement of the operating element 18c. An operating surface 32c of the operating element 18c extends in an unactuated state of the operating element 18c, viewed along at least substantially perpendicular to an outer surface 42c of the handle housing 14c, starting from an interior of the handle housing 14c enclosed by the handle housing 14c and facing away from the handle housing 14c Direction across the outer surface 42b away. Furthermore, the operating surface 32c of the operating element 18c after actuation of the operating element 18c at least partially at least substantially flush with the outer surface 42c of the handle housing 14c. Thus, the operating element 18c is moved into the handle housing 14c as a result of an actuation in the direction of the handle housing 14c along the movement axis 40c.

Claims

claims

1 . Electrically operable machine tool, in particular electrically

operable angle grinder having at least one handle housing (14a; 14b; 14c) and at least one switching unit (16a; 16b; 16c) having at least one control element (18a; 18b; 18c) mounted at least on one side, characterized in that the operating element ( 18a; 18b; 18c) is arranged on a side (20a; 20b; 20c) of the handle housing (14a; 14b; 14c) which, upon gripping around the handle housing (14a; 14b; 14c), properly handles a palm of a hand of a hand Facing the operator.

2. Electrically operable machine tool according to claim 1, characterized by at least one output housing (22a), wherein the operating element (18a; 18b; 18c) in each operating state on one side (20a; 20b; 20c) of the handle housing (14a; 14b; 14c) is arranged, which of a further one of a driven side (24a) of the output housing (22a) facing side (26a, 26b, 26c) of the handle housing (14a, 14b, 14c) is different.

3. Electrically operable machine tool according to one of the preceding claims, characterized in that the operating element (18a, 18b) is pivotally mounted about a pivot axis (28a, 28b) which is outside a control surface area (30a, 30b) of the operating element (18a, 18b). is arranged.

4. Electrically operable machine tool according to claim 2 or 3, characterized in that the pivot axis (28a, 28b), viewed along a longitudinal extension direction of the operating element (18a, 18b), relative to a control surface (32a, 32b) of the operating element (18a; ) is arranged at a distance.

5. Electrically operable machine tool according to one of claims 2 to 4, characterized in that the pivot axis (28a) on a connection region (34a) of the handle housing (14a) facing the end (36a) of the operating element (18a) is arranged.

6. Electrically operable machine tool according to one of claims 2 to 4, characterized in that the pivot axis (28b) on a connection region (34b) of the handle housing (14b) facing away from the end (38b) of the operating element (18b) is arranged.

Electrically operable machine tool at least according to claim 1, characterized in that the operating element (18c) is mounted translationally movable.

8. An electrically operable machine tool according to claim 7, characterized in that a movement axis (40a; 40b; 40c) of the operating element (18a; 18b; 18c) extends at least substantially transversely to a longitudinal direction of extension of the handle housing (14a; 14b; 14c) ,

9. Electrically operable machine tool according to one of the preceding claims, characterized in that an operating surface (32a; 32b; 32c) of the operating element (18a; 18b; 18c) after actuation is at least partially at least substantially flush with an outer surface (42a; 42c) of the handle housing (14a; 14b; 14c).

10. Electrically operable machine tool according to one of the preceding claims, characterized by at least one Einschaltsperreinheit (44a, 44b, 44c), which is intended to a movement of the operating element (18a, 18b, 18c) due to unintentional actuation of the operating element (18a ; 18b; 18c).

1 1. Electrically operable machine tool according to claim 10, characterized in that the Einschaltsperreinheit (44a, 44b, 44c) at least one release element (46a, 46b, 46c), which comprises an actuating portion (48a, 48b, 48c) at least partially laterally adjacent to a Operating surface (32a, 32b, 32c) of the operating element (18a, 18b, 18c) is arranged.

12. An electrically operable machine tool according to one of the preceding claims, characterized in that the operating element (18a; 18b; 18c) has a maximum longitudinal extension (50a; 50b; 50c) which is at least 60% of a maximum longitudinal extension (52a; 52b; 52c). corresponds to a handle-shaped grip region (54a, 54b, 54c) of the handle housing (14a, 14b, 14c).

13. Electrically operable machine tool according to one of the preceding claims, characterized in that the operating element (18a) has a maximum transverse extent (56a) which corresponds to at least 60% of a maximum transverse extent (58a) of a handle-shaped handle portion (54a) of the handle housing (14a) ,

14. Machine tool switching device of a machine tool according to one of the preceding claims, with at least the switching unit (16a, 16b, 16c).