DE102019216863A1 - Hand machine tool - Google Patents

Abstract

The invention relates to a handheld power tool, in particular an angle grinder, with a drive unit for driving an accessory tool, in particular a grinding and / or cutting disc, with a switch unit for switching the drive unit and with an actuation unit for actuating the switch unit. It is proposed that the The actuation unit can be actuated by means of an actuation around a handle axis or tangentially to a handle axis of the hand tool

Description

The invention relates to a handheld power tool according to the preamble of claim 1.

State of the art

In the DE 10 2011 089 717 A1 a machine tool switching device with at least one switch unit, which has at least one movably mounted operating element for actuating a mechanical, electrical and / or electronic switching element, with a guide unit which is provided to move the operating element when the operating element is actuated along a main direction of extent of the operating element to transfer along the main direction of extent at least into a movement of the operating element running transversely to the main direction of extent, disclosed.

Disclosure of the invention

The invention is based on the object of improving a handheld power tool with simple structural measures.

The object is achieved with a handheld power tool, in particular an angle grinder, with a drive unit for driving an accessory tool, in particular a grinding and / or cutting wheel, with a switch unit for switching the drive unit, with an actuation unit for actuating the switch unit

In particular, the handheld power tool can have a locking unit for locking an actuation of the actuating unit.

It is proposed that the locking unit can be unlocked as a function of an actuating force acting on the actuating unit.

To actuate the actuation unit, an actuation force can be applied to the actuation unit, which is provided to move the actuation unit from a release state into an actuation state. Usually, the actuation force is applied perpendicularly to an actuation surface of the actuation unit. In particular, actuation of the actuation unit can thereby be blocked if the actuation unit is acted upon by an actuation force and the blocking unit is in a blocking state.

Usually, the actuating unit can be locked or unlocked by means of the locking unit independently of an actuating force acting on the actuating unit.

In the present case, it can be prevented that the actuation unit is switched from a release state to an actuation state if the actuation unit is acted upon by an actuation force and the locking unit has not been unlocked beforehand. In particular, it can be prevented in the present case that the locking unit is or can be adjusted from a locking state to an unlocking state when an actuating force is applied to the actuating unit.

When an actuating force is applied to the actuating unit, the actuating unit can be deflected and, in particular, can be deflected in such a way that unlocking of the locking unit is prevented. As a result, the handheld power tool can be held particularly advantageously by an operator. In particular, the locking unit can be prevented from being switched from a locking state to an unlocking state when an operating force is applied to the operating unit.

In the present case, it can be prevented that an operator inadvertently actuates the handheld power tool by the operator grasping around the actuation unit in order, for example, to be able to carry or hold the handheld power tool without actuating or wanting to operate it. In this way, accidental unlocking of the hand-held power tool can be prevented by preventing the locking unit from being unlocked when an operating force acts on the operating unit.

For example, actuation of the actuation unit is blocked when the blocking unit is in a blocking state. The locking unit can hit a stop which prevents the actuation unit from being actuated. The locking unit can be shifted from the locking state to the unlocking state.

"Can be unlocked as a function of an actuating force acting on the actuating unit" is to be understood in particular to mean that, for example, the actuating unit is secured against unlocking of the locking unit when there is an actuating force acting on the actuating unit, and the actuating unit cannot be unlocked by means of the locking unit when there is no actuating force acting on the actuating unit .

The handheld power tool can be designed as a portable handheld power tool. The handheld power tool can have a machine housing. The machine housing can be provided for this purpose, in particular internal ones To surround components such as drive unit, switch unit, etc. The handheld power tool can be provided to movably mount an actuating unit on the machine housing.

The drive unit can be commutated mechanically, in particular by means of a carbon brush and collector, or electronically, in particular by means of semiconductor components such as power transistors or thyristors. The drive unit can be designed as an electric motor.

The accessory tool can be designed as a grinding wheel and / or a cutting wheel. In principle, the accessory tool can be selected, for example, depending on the hand machine tool used, so that, for example, a saw disk or a saw blade can be used when using a circular saw and a drilling tool or a chisel when using a hammer drill. It goes without saying that other accessory tools that appear useful to a person skilled in the art can also be used.

The switch unit has an on / off switch. The on / off switch is provided to switch the drive unit on and / or off. For this purpose, the switch unit has in particular a push button, which is preferably provided to enable or block a current flow to the drive motor. The switch unit can be provided to enable and / or interrupt an energy supply to the drive unit as a result of an actuation of the actuation unit and / or the switch unit. The switch unit can be designed as a mechanical, electrical and / or electronic switch unit. The switch unit can be arranged in a circuit between a power supply line, such as a cable on which a plug for connection to a socket or a battery device is arranged, and a consumer, such as a drive unit designed as an electric motor, of the handheld power tool.

The actuation unit is provided to actuate the switch unit in order to switch the drive motor on and / or off by means of the switch unit. The actuation unit can be designed as an actuation switch. The actuation unit can be designed as an actuation pawl, an actuation switch button and / or as an actuation switch lever. The actuation unit can be provided to actuate the switch unit directly or indirectly. In particular, the actuation unit can be provided to contact the switch unit in such a way that the switch unit is transferred from a switched-off state to an switched-on state and, if necessary, vice versa. The actuation unit can extend through the machine housing in order to actuate the switch unit.

The blocking unit can be provided to interact with the actuating unit and in particular to limit or block a movement of the actuating unit. The blocking unit can be provided to limit a movement of the actuating unit and / or the switch unit, in particular to block it. In particular, the blocking unit can be provided to block a change in state of the actuating unit and / or the switch unit. For example, it can be prevented by means of the blocking unit that the actuation unit changes from a release state to an actuation state and / or the switch unit from a switched-off state to a switched-on state.

The subclaims specify further expedient developments of the handheld power tool according to the invention.

It can be expedient for the locking unit to be movably, in particular rotatably, mounted in an unloaded release state of the actuating unit. An unloaded release state of the actuation unit is to be understood in particular as a state in which there is no actuation force on the Actuating unit acts or is exercised. The locking unit can, in particular in an unloaded release state, be mounted so as to be translationally and / or rotationally movable with respect to the actuating unit, for example in order to move the locking unit from a locked state to an unlocked state. In an unloaded release state, the actuation unit can be at a maximum distance from the machine housing of the handheld power tool. In an unloaded release state, the actuation unit can protrude as much as possible from the machine housing or protrude further than in a loaded release state and / or an actuation state. In this way, a blocking unit can be implemented in a particularly simple manner.

Furthermore, it can be expedient for the actuation unit to be deflected out of the release state in a loaded release state in such a way that actuation of the locking unit from a locked state to an unlocked state is prevented. In particular, actuation of the locking unit is positively locked in a loaded release state of the actuating unit and in a locked state of the locking unit. A loaded release state of the actuation unit is to be understood in particular as a state in which an actuation force acts or is exerted on the actuation unit. In a loaded state of the actuation unit, the locking unit can be prestressed, in particular it can be prestressed between the actuation unit and a machine housing of the handheld power tool. The locking unit can be provided to interact with a machine housing of the handheld power tool. The locking unit can be arranged at least partially between the actuating unit and the machine housing. The locking unit can be spaced from the machine housing. In an unloaded actuation state of the actuation unit, the locking unit can be spaced further apart from the machine housing than in a loaded release state. The locking unit can contact the machine housing in a loaded release state. The locking unit can be spaced apart from the machine housing in an unloaded release state. The locking unit can be mounted so as to be movable with respect to the machine housing. The locking unit can be arranged on the actuating unit. The locking unit can be connected to the actuating unit and, in particular, can be rotatably mounted with respect to it. The locking unit can limit the actuating unit. In this way, the hand-held power tool can be protected against unintentional actuation in a particularly reliable manner. As a result, the locking unit can be put in a particularly simple manner in a state in which unlocking of the locking unit is prevented.

The actuation unit can be movably mounted from an unloaded release state to a loaded release state. A movement of the actuation unit can be limited to a small distance. The small distance can be a few millimeters or a few angular deviations over which the actuating unit can be moved when the locking unit is in a locked state. The distance can extend by up to 1 cm, in particular by up to 0.8 cm, preferably by up to 0.5 cm, particularly preferably from 0.5 to 5 mm. An angular deviation about an actuation axis of the actuation unit can be up to 3 °, in particular up to 1 °, preferably up to 0.5 °, particularly preferably up to 0.25 °. A movement of the actuating unit can be limited by a stop on the locking unit.

Furthermore, it can be expedient for the hand-held power tool to have a form-fit element which is provided to limit a movement of the locking unit, in particular from a locked state to an unlocked state. The form-fit element can be designed in one piece or in one piece with the machine housing. The form-fit element can be designed as a raised shape. The form-fit element can form a stop which is provided to limit a movement of the locking unit. The form-fit element can be designed as a shaped recess which is provided to at least partially accommodate the locking unit. In this way, a movement of the locking unit can be limited in a particularly simple manner.

Furthermore, it can be expedient for the form-fitting element to be arranged on the machine housing of the hand-held power tool. The interlocking element can be provided to prevent a movement of the locking unit from a locked state into an unlocked state. In this way, a form-fit element can be provided in a particularly simple manner.

It is proposed that the locking unit be arranged on the actuating unit. The locking unit can limit a movement of the actuating unit. The blocking unit can block or prevent actuation of the switch unit by means of the actuation unit. In this way, inadvertent actuation of the handheld power tool can be prevented in a particularly simple manner.

It is further proposed that the locking unit has a spring element which is provided to move the locking unit from an unlocked state into a locked state. The spring element can be designed as a leg spring or a torsion spring. The locking unit can be biased in an unlocked state. In an unlocked state, the locking unit can be biased to a greater extent than in a locked state. It can thereby be ensured that the blocking unit is reset to the starting position or the blocking state as soon as the actuating unit is switched to the release state. As a result, the locking unit can be set back in a particularly simple manner.

It is further proposed that the actuating element is designed as an actuating pawl. The actuating element can have an elongate extension. The actuating element can have a main extension which extends essentially along a main extension of the handheld power tool. The actuating element can extend along a main extension of a handle area, in particular by more than 40%, preferably by more than 50%, preferably by more than 60%, particularly preferably by more than 70%, more preferably by more than 80% and / or preferably extend less than 80%, preferably less than 70%. The actuating element can be mounted so as to be movable, in particular rotatable, with respect to the machine housing be. The actuating element can be arranged on the machine housing. In a released state, the actuating element can be arranged at an angle with respect to the machine housing, in particular a handle axis. In an actuated state, the actuating element can be arranged parallel to the machine housing, in particular a handle axis. The actuating element can have a fixed end connected to the machine housing and a loose end facing away from the fixed end. The locking unit can be arranged between the fixed end and the loose end. The locking unit can be arranged approximately in the middle between the fixed end and the loose end. The locking unit, in particular the locking element, can be arranged in the area of the loose end. As a result, the actuating element can be particularly easily grasped and actuated by the operator of the hand-held power tool.

The handle axis can extend along a main extension of the handle area of the handheld power tool or the machine housing.

It can be expedient for the locking unit to have a locking element which is arranged on the fastening element and is rotatably mounted with respect to the actuating element. The actuating element can be actuated by means of an essentially translational movement. The locking element can be actuated by means of an essentially translational movement which is transverse, in particular essentially perpendicular to the actuation or actuation direction of the actuating element. This makes it possible to ensure that not only a single actuation or actuation direction is sufficient to actuate the actuation unit, but rather two actuations or actuation directions that are independent of one another are required.

Furthermore, it can be expedient for the locking element to be mounted rotatably about an axis of rotation, the axis of rotation being further spaced from the form-fit element in an unloaded release state of the actuating element than in a loaded actuation state. This can ensure that the actuation unit is not accidentally actuated.

The invention also relates to a method for blocking an actuation of a handheld power tool with an actuation unit and a blocking unit comprising the steps; Applying an operating force to the operating unit; Actuation of the locking unit from a locked state to a stop state with the form-fitting element. This can ensure that the actuation unit is not accidentally actuated. In particular, the handheld power tool can be gripped around and carried by an operator without actuating the actuating unit or putting it into an actuating state.

Furthermore, it can be expedient for an actuation unit to be actuatable by means of an actuation around a handle axis or tangential to a handle axis of the handheld power tool.

The actuation unit can be designed as a slide switch, in particular that can be pushed tangentially to an outer surface. The actuation unit can be provided to move the handheld power tool or the switch unit by means of a sliding movement of the actuation unit. The actuation unit can extend in the circumferential direction around the handle axis parallel to the machine housing. The actuating unit can be mounted pivotably or tangentially displaceably in the circumferential direction about the handle axis. The actuation unit can extend through the housing recess in the machine housing.

As a result, the actuation unit can be actuated particularly easily and intuitively. Since an operator grasps the handle area and the actuation unit with one hand, the operator can switch the actuation unit from a release state to an actuation state particularly reliably by twisting the hand or at least sections of individual hand sections.

The machine housing of the handheld power tool can have a housing recess which is provided to accommodate the actuation unit. The machine housing can delimit the housing recess, in particular in one plane, by 360 °. The housing recess can be provided to support the actuating unit in a moveable manner. The housing recess can be provided to mount the actuating unit in such a way that the actuating unit extends from an inside, in particular an inside, to an outside, in particular an outside, of the machine housing. The housing recess can extend in the circumferential direction around the handle axis, which is smaller than an extension of the actuating unit in the circumferential direction around the handle axis, in particular by at least 70%, preferably by at least 60%, preferably by at least 50%, particularly preferably by at least 40% is. This can ensure that the actuation unit is held in or on the machine housing or the housing recess. In principle, the machine housing can be the actuation unit overlap both in a released state and in an actuated state, whereby the housing recess could be limited. The machine housing can preferably overlap the actuation unit in a release state and not overlap on both sides in an actuation state, as a result of which in particular the housing recess can be at least partially exposed. The housing recess can extend along the actuating unit. The housing recess can limit a movement of the actuating unit, in particular in the circumferential direction around the handle axis.

The machine housing can have a guide unit which is provided to guide the actuating unit, in particular in the circumferential direction around the handle axis, along the machine housing. The guide unit can be designed as a guide groove. The guide groove can be provided to extend in the circumferential direction. The guide groove can be provided to accommodate the actuating unit and to guide it in the circumferential direction. As a result, the actuation unit can actuate the handheld power tool or the switch unit in a particularly simple manner.

It can be useful that the actuation unit forms a handle area. The actuation unit can move along the handle axis in relation to an extension of a handle area, in particular by more than 40%, preferably by more than 50%, preferably by more than 60%, particularly preferably by more than 70%, more preferably by more than 80% and / or preferably less than 80%, preferably less than 70%, extend. The operating unit can be grasped by an operator if necessary. The actuation unit can have a holding area for grasping around by hand. As a result, an operator can hold the hand-held power tool in several grip positions and operate it.

Furthermore, it can be expedient for the actuation unit to move around an angular range of at least 30 °, in particular at least 40 °, preferably at least 50 °, preferably at least 60 °, and / or at most 70 °, in particular at most 80 °, in the circumferential direction with respect to the handle axis , preferably at most 70 °, more preferably at most 60 °. As a result, an operator can operate the handheld power tool from different grip positions, as a result of which the handheld power tool can be gripped and operated in a particularly flexible manner.

Furthermore, it can be expedient for the actuation unit to extend along the handle axis by more than 40%, preferably by more than 50%, preferably by more than 60%, particularly preferably by more than 70%, more preferably by more than 80% and / or preferably less than 80%, preferably less than 70%.

As a result, the hand-held power tool can be actuated particularly flexibly and reliably by enabling actuation along the entire extent of the actuating unit.

Furthermore, it can be expedient that the actuation unit can be actuated in a counterclockwise and / or clockwise direction. Left or right rotation is to be understood as meaning a sense of rotation which preferably runs along the handle axis in the direction from a handle area to a tool receiving area, left or right around the handle axis. A particularly simple actuation of the handheld power tool can hereby be made possible.

It is proposed that the actuation unit has a spring element which is provided to reset the actuation element from an actuation state into a release state. The spring element can be designed as a torsion spring or as a leg spring. The spring element can be designed as a tension-compression spring. It goes without saying that other (spring) elements that appear sensible to a person skilled in the art can also be considered, which reset the actuating element into a release state. As a result, the actuation unit can be reset in a particularly reliable manner, so that the actuation unit moves, for example, from the actuation state into the release state.

It is further proposed that the actuation unit is designed in such a way that actuation of the handheld power tool or the switch unit can be actuated by means of a movement along the handle axis or in the circumferential direction around the handle axis. In particular, a second actuating element can be provided which is coupled to the first actuating element in such a way that a movement of the first actuating element around the handle axis leads to a movement of the second actuating element along the handle axis. The switch unit can be arranged below the first actuating element. As a result, the switch unit can be arranged in the machine housing in a particularly space-saving manner.

It is further proposed that the actuation unit have a first actuation element and a second actuation element mounted movably with respect to the first actuation element. The first actuating element is provided to close the second actuating element actuate. The second actuating element is mounted so as to be movable essentially perpendicular to an actuating direction of the first actuating element. The first actuating element can be mounted pivotably about the handle axis. The second actuating element can be mounted so as to be movable in translation. The second actuating element can be mounted movably along the handle axis. A particularly compact actuation unit can thereby be achieved.

It can be expedient for the actuation unit to have a guide unit which is provided to guide the second actuation element relative to the first actuation element. The guide unit can have a form-fit element, in particular a form-fit elevation, which engages in a further form-fit element, in particular a housing recess. The guide unit can be provided to specify a relative movement of the second actuating element with respect to the first actuating element. The form-fit element, in particular the form-fit elevation, can be arranged on the first actuating element. The form-fit element, in particular the form-fit recess, can be arranged on the second actuating element. As a result, a switch unit can be actuated in a particularly reliable and compact manner.

Furthermore, it can be expedient for the first actuation element to be arranged parallel to the second actuation element. In this way, a particularly compact actuating unit can be formed.

Furthermore, it can be expedient for the actuation unit to have an actuation elevation which protrudes in the radial direction. The increase in actuation can be provided to protrude from the machine housing. The increase in actuation can be provided to limit a movement of the actuation unit in the circumferential direction. The actuation unit can be provided to strike against the machine housing delimiting the housing recess when the actuation unit is actuated.

Ramp kinematics

Furthermore, it can be expedient for the actuation unit to have a first actuation element and a second actuation element mounted movably with respect to the first actuation element. The first actuating element can be provided to actuate the second actuating element. The second actuating element, in turn, can be provided to actuate a switch unit.

It can be expedient for the first actuating element to be arranged parallel to the second actuating element. As a result, the actuation unit can be designed to be particularly compact.

Furthermore, it can be expedient for the first actuating element to be mounted such that it can move in translation with respect to the second actuating element.

Furthermore, it can be expedient for the second actuation element to be mounted such that it can move in translation relative to the first actuation element for unlocking the actuation unit and for actuating the switch unit. The second actuation element can be provided to move the actuation unit from a locked state into an unlocked state by means of a first translational movement and to switch the switch unit by means of a second translational movement. The first movement and the second movement can be directed parallel to the actuation unit, in particular the first actuation element and / or the second actuation element. The first and the second translational movement can be aligned essentially along a main direction of extent of the handheld power tool or along a handle axis of the handle area of the handheld power tool.

Furthermore, it can be expedient that the first actuating element is provided to actuate the second actuating element, in particular by means of a further translational movement, in that a distance between the first actuating element and the second actuating element is reduced. The further translational movement can be oriented transversely, in particular substantially perpendicularly, to the first translational movement and / or the second translational movement. The further translational movement can be oriented essentially perpendicular to a main direction of extent of the handheld power tool or radially to the handle axis of the handle area of the handheld power tool.

It is proposed that the actuation unit form a handle area. In particular, the operating unit can preferably be grasped with the entire hand of an operator.

It is further proposed that the actuation unit has a guide unit which is provided to guide the second actuation element relative to the first actuation element. The guide unit can be a form-fit element, in particular a form-fit elevation, have, which engages in a further form-locking element, in particular a housing recess. The guide unit can be provided to specify a relative movement of the second actuating element with respect to the first actuating element. The form-fit element, in particular the form-fit elevation, can be arranged on the first actuating element. The form-fit element, in particular the housing recess, can be arranged on the second actuating element. The first actuating element has a sliding surface which is provided to transmit a movement of the second actuating element to the first actuating element. This can ensure that the actuation unit functions easily and safely.

It is further proposed that the handheld power tool has a locking unit which is provided to lock the actuating unit in a locked state and to release it in an unlocked state.

It can be expedient that the locking unit is provided to adjust the actuation unit and in particular to adjust it in such a way that the actuation unit can be actuated. The locking unit can be provided to adjust or move the second actuating element relative to the first actuating element. The locking unit can be arranged on the first actuating element. The locking unit can be rotatably mounted on the actuating element. The locking unit can be provided to adjust the second actuating element in translation with respect to the first actuating element by means of a rotary movement of the locking unit.

Furthermore, it can be expedient for the locking unit to be rotatably mounted. The locking unit can be arranged on the first actuating element.

Furthermore, it can be expedient that the locking unit is provided to adjust the second actuating element relative to the first actuating element, in particular to enable actuation of the actuating unit. The locking unit can be provided to move the first actuating element with respect to the second actuating element and to release a relative movement of the first actuating element with respect to the second actuating element.

Furthermore, it can be expedient for the actuation unit to have a sliding element which is provided to actuate the switch unit by means of the actuation unit. The sliding element can be designed as a sliding elevation or a sliding recess. The sliding element can be arranged in or on the first and / or the second actuating element. The sliding element can have an inclined plane, which is provided to predetermine a movement of the actuating unit, in particular of the second actuating element, in particular to predetermine it in a non-positive manner. The actuation unit can have a plurality of sliding elements. The second actuating element can be designed as an actuating disk. The actuating disk can have a sliding recess. In this way, a particularly compact actuating unit can be formed.

It is proposed that the actuation unit has a roller element which is provided to actuate the switch unit by means of the actuation unit. This enables a particularly reliable and simple actuation of the actuation unit.

It is proposed that the actuation unit is provided to actuate the switch unit by means of a deformation of the actuation unit. The actuation unit can be at least partially deformable.

The actuation unit is arranged in a / the housing recess of the machine housing. The actuation unit can be provided to cover the housing recess. The actuation unit can be provided to actuate the switch unit directly.

Such an actuation unit can transmit a deformation of the actuation unit so that, for example, a deformation along the handle axis at one end of the actuation leads to a deformation at an end of the actuation unit facing away from the end. As a result, an operator can actuate the actuation unit in a particularly flexible manner in that a deformation is transmitted over the entire length of the actuation unit.

It can be expedient for the actuation unit to have an actuation element which is provided to actuate the switch unit by means of an, in particular elastic, deformation of the actuation element. The elastic deformation can be provided to transmit a movement to the switch unit in order to actuate the switch unit.

Furthermore, it can be expedient for the actuation unit to have at least three or at least four actuation elements which are provided to actuate the switch unit by means of an, in particular elastic, deformation of the actuation unit.

Furthermore, it can be expedient for the at least three or at least four actuating elements to be arranged parallel to one another and coupled to one another.

Furthermore, it can be expedient for the actuation unit to extend further along a handle axis compared to an extension of a handle area, in particular by more than 40%, preferably by more than 50%, preferably by more than 60%, particularly preferably by more than 70% preferably by more than 80% and / or preferably less than 80%, preferably less than 70%.

It is proposed that the actuating elements are elongated, in particular essentially rod-shaped.

It is further proposed that the actuation unit has a form-fit element, in particular a form-fit elevation, is provided to interact with the form-fit element, in particular a form-fit recess, corresponding to the form-fit element. The form-fit element can be designed as a form-fit elevation which is designed in the form of a circle. The form-fit element can be designed in the shape of a pin. The corresponding form-fit element can be designed as a form-fit recess. The interlocking recess can have a cross section which is designed in the form of an elongated hole or an ellipse. The interlocking recess can be designed as an insertion recess.

It is further proposed that the actuating elements are mounted so that they can move relative to one another.

It can be expedient for the actuating elements to have a toothing which couples a movement of the actuating elements.

Furthermore, it can be expedient for the handheld power tool to have a blocking unit which is provided to block actuation of the actuating unit in a blocked state and to enable it in an unlocked state.

Figure list

• 1 eine perspektivische Ansicht einer Handwerkzeugmaschine,
• 2 bis 3 jeweils eine Ansicht einer Betätigungseinheit,
• 4 bis 6 jeweils eine Ansicht einer Weiterbildung der Betätigungseinheit,
• 7 bis 9 jeweils eine Ansicht einer weiteren Weiterbildung der Betätigungseinheit,
• 11 bis 13 jeweils eine Ansicht auf eine weitere Weiterbildung der Betätigungseinheit,
• 14 eine Ansicht auf eine weitere Weiterbildung der Betätigungseinheit und
• 15 bis 18 jeweils eine Ansicht auf eine weitere Weiterbildung der Betätigungseinheit.

Further advantages emerge from the following description of the drawings. Exemplary embodiments of the invention are shown in the drawing. The drawings, 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. Here shows:

• 1 a perspective view of a hand machine tool,
• 2 to 3 each a view of an actuation unit,
• 4th to 6th each a view of a further development of the actuation unit,
• 7th to 9 each a view of a further development of the actuation unit,
• 11 to 13th each a view of a further development of the actuation unit,
• 14th a view of a further development of the actuation unit and
• 15th to 18th each a view of a further development of the actuation unit.

In the following figures, the same components are provided with the same reference symbols.

The figures show a hand machine tool designed as an angle grinder 11 . The hand machine tool 11 is designed to be portable and has a machine housing 13th on, which is provided for internal components, such as the drive unit 15th , Switch unit 17th , etc. to surround.

The hand machine tool 11 has a drive unit 15th for driving an accessory tool, which is designed as a grinding and / or cutting wheel. The drive unit 15th can be commutated mechanically, in particular by means of a carbon brush and collector, or electronically, in particular by means of semiconductor components such as power transistors or thyristors. The drive unit 15th can be designed as an electric motor. Here is the drive unit 15th designed as an EC electric motor. To control the drive unit 15th instructs the hand machine tool 11 an electronics unit 19th on, which is particularly useful in an EC electric motor.

The accessory tool can be designed as a grinding wheel and / or a cutting wheel. In principle, the accessory tool can, for example, depending on the handheld power tool used 11 can be selected so that, for example, when using a circular saw a saw disk or a saw blade and when using a hammer drill a drilling tool or a chisel comes into consideration. It goes without saying that other things that appear useful to a person skilled in the art and the handheld power tool are also understood 11 Appropriate accessory tools can be used.

The hand machine tool 11 has a switch unit 17th for switching the drive unit 15th on. The switch unit 17th has an on / off switch, which is provided for the drive unit 15th on and / or off. The switch unit 17th has for this purpose, for example, a push button, which is preferably provided to enable or block a current flow to the electric motor. The switch unit 17th is to be provided as a result of an actuation of the switch unit 17th by means of an actuation unit 21st a power supply for the drive unit 15th to enable or interrupt. The switch unit 17th can be used as a mechanical and / or electrical switch unit 17th be trained. The switch unit 17th is in a circuit between a power supply line, such as a cable on which a plug for connection to a socket or a battery device can be arranged, and a consumer, such as a drive unit designed as an electric motor 15th , the hand machine tool 11 be arranged.

The hand machine tool 11 has an actuation unit 21st to operate the switch unit 17th on. The hand machine tool 11 is intended to be the actuation unit 21st on the machine housing 13th to be moveable. The actuation unit 21st the switch unit is provided for this purpose 17th to be operated by means of the switch unit 17th switch the electric motor on and / or off. The actuation unit 21st can be used as an operating pawl ( 1 to 3 ), an operating slide ( 4th to 10 ) or as an actuation switch key ( 11 to 18th ) be trained. The actuation unit 21st is intended to be the switch unit 17th to operate immediately and the switch unit 17th to contact so that the switch unit 17th is transferred from a switched-off state to a switched-on state and possibly vice versa. The actuation unit 21st preferably extends through the machine housing 13th through to the switch unit 17th to operate. The actuation unit 21st is in at least one operating state in a housing recess 61 of the machine housing 13th arranged.

The actuation unit 21st has an actuation surface 27 on. The operating area 27 is intended to be contacted by an operator and by means of an actuating force 29 to be urged to the actuation unit 21st to operate. The actuation unit 21st has at least a first actuating element 23 , 25th on.

The hand machine tool 11 can be a locking unit 31 to block actuation of the actuation unit 21st exhibit. The locking unit 31 is a function of one on the actuation unit 21st acting actuating force 29 unlockable ( 3 ).

To actuate the actuation unit 21st becomes the first actuation element on actuation unit 21 23 , 25th an operating force 29 applied, which is provided, actuating unit 21, the first actuating element 23 , 25th from a release state to an actuation state. Usually the actuation force 29 perpendicular to the actuation surface 27 Operating unit 21 of the first operating member 23 , 25th upset. An actuation of the actuation unit 21st is blocked if actuation unit 21 is the first actuation element 23 , 25th by means of an operating force 29 is applied and the locking unit 31 is in a locked state.

In the present case, the actuation unit can be prevented from moving 21st moved from a release state to an actuation state, provided that the first actuation element 23 , 25th Actuating unit 21 by means of an actuating force 29 is acted upon and the locking unit 31 has not been previously unlocked. In particular, this prevents the locking unit 31 when the actuation unit is acted upon 21st of the first actuating element 23 , 25th with an actuation force 29 is adjustable or can be adjusted from a locked state to an unlocked state.

When the actuation unit 21 of the first actuation element is acted upon 23 , 25th with an actuation force 29 becomes actuation unit 21st the first actuator 23 , 25th deflected in such a way that an unlocking of the locking unit 31 is prevented. In particular, by means of the locking unit 31 prevents the locking unit 31 is switched from a locking state to an unlocking state when the operating unit 21 is the first operating element 23 , 25th with an actuation force 29 is applied.

As a result, the handheld power tool can be inadvertently unlocked 11 can be prevented by unlocking the locking unit 31 is prevented when an operating force 29 on the actuation unit 21st works.

The locking unit 31 is intended to be used with the actuation unit 21st interact and in particular a movement actuating unit 21st of the first actuating element 23 , 25th to limit or block. This enables the switch unit to be switched on / off 17th be prevented. The locking unit 31 is provided for a movement of the first actuating element 23 , 25th Actuation unit 21st to switch on the switch unit 17th to prevent. The locking unit 31 is provided for a change of state of the actuation unit 21st and the switch unit 17th to lock. For example, by means of the locking unit 31 prevented the actuation unit 21st of a release state into an actuation state and the switch unit 17th goes from an off state to an on state.

The locking unit 31 has a locking element 33 on which opposite the actuation unit 21st and / or the machine housing 13th the hand machine tool 11 is movably mounted. The locking element 33 be provided to be moved from the locked state to the unlocked state. The locking element 33 is provided against a stop element 35 to bump, which prevents the operating unit 21st is operated. The stop element 35 lies on one of the locking elements 33 opposite side. The stop element 35 is on the machine housing 13th arranged. The stop element 35 can be used as a stop surface 37 be educated. The locking element 33 has a restricted area 39 on, which is provided, the stop surface 37 in a locked state of the locking element 33 to contact.

The locking element 33 is on the actuation unit 21st arranged and provided for a movement of the actuating unit 21st to limit. The locking element 33 blocks actuation of the switch unit 17th by actuating the first actuating element 23 is blocked. The locking element 33 is on the first actuator 23 arranged and opposite the first actuating element 23 rotatably mounted. The locking element 33 is with the first actuator 23 connected. The locking element 33 is around an axis of rotation there rotatably mounted. The axis of rotation there the first actuating element passes through 23 , 25th and cut this. The locking element 33 is in a locking recess 41 of the first actuating element 23 , 25th arranged. The locking element 33 extends from one side of the first actuator 23 up to a side facing away from one side. The locking element 33 has two locking arms 43 , 45 each on a side of the first actuating element facing away from one another 23 are arranged. The locking element 33 is around an axis of rotation there rotatably mounted, the axis of rotation there compared to the increase in shape 51 in an unloaded release state of the actuating element 23 is further spaced than in a loaded actuation state.

The locking element 33 is in an unloaded release state of the actuation unit 21st rotatably movably mounted. The locking element 33 is in an unloaded release state with respect to the actuation unit 21st rotatably or rotatably movably mounted to the locking unit 31 from a locked state to an unlocked state. The actuation unit is in an unloaded release state 21st compared to the machine housing 13th maximally spaced apart or protruding further than in a loaded release state or an actuation state. The locking element 33 is spaced apart from the machine housing in an unloaded release state 13th . The locking element 33 , especially the restricted area 39 , is intended for the machine housing 13th , especially the stop surface 37 to contact in a loaded release state.

The first actuator 23 is deflected in a loaded release state from the release state in such a way that an actuation of the locking element 33 from a locked state to an unlocked state. An actuation of the locking element 33 is in a loaded release state of the actuation unit 21st and in a blocking state of the blocking unit 31 positively locked. The locking element 33 is in a loaded state of the actuation unit 21st between the first actuator 23 and the machine housing 13th biased. The locking element 33 , especially the restricted area 39 , is provided with a machine housing 13th , especially the stop surface 37 to work together. The locking element 33 is at least partially between the first actuating element 23 and the machine housing 13th arranged. The locking element 33 is opposite the machine housing 13th spaced. The locking element 33 is in an unloaded operating state of the first operating element 23 compared to the machine housing 13th further apart than in a loaded release state. The locking element 33 contacts the machine housing 13th in a loaded release state. The locking element 33 is opposite the machine housing 13th spaced in an unloaded release state. The locking element 33 is opposite the machine housing 13th movably mounted.

The first actuator 23 is in a locked state of the locking element 33s movably mounted from an unloaded release state to a loaded release state. Movement of the first actuator 23 is through a stop of the locking unit 31 by means of the locking element 33 , especially the restricted area 39 , and the stop element 35 , especially the stop surface 37 , limited.

The hand machine tool 11 indicates as a shape elevation 51 formed form-locking element 51 on, which is intended to be a movement locking unit 31 of the locking element 33 from a locked state to an unlocked state. The form-fit element 51 is on the machine housing 13th arranged and formed in one piece or in one piece with this. The increase in shape 51 forms a further stop which is provided for a movement, in particular a twisting movement, of the locking element 33s to limit. The increase in shape 51 is provided for a movement of the locking element 33 from a locked state to an unlocked state. The increase in shape 51 can be provided for a movement of the locking element 33 to prevent or at least to hinder. The increase in shape 51 is designed in such a way that the increase in shape can be overcome 51 by means of the locking element 33 , can be done in that the actuation force 29 of the first actuating element 23 is released to the first actuator 23 move back to the locking element 33 in the unlocked state.

The increase in shape 51 is between the stop element 35 , especially the stop surface 37 of the stop element 35 , and the locking element 33 , especially the restricted area 39 of the locking element 33 , and / or the first actuating element 23 arranged. The increase in shape 51 has a shaped surface 53 which transversely, in particular perpendicular, to the stop surface 37 is arranged. The increase in shape 51 closes on the side of the stop element 35 at.

Alternatively or in addition, the form-fit element 51 be designed as a shaped recess, which is provided for the locking element 33 at least partially. The locking element 33 is around an axis of rotation there rotatably mounted, the axis of rotation there compared to the increase in shape 51 in an unloaded release state of the actuating element 23 is further spaced than in a loaded actuation state.

The locking unit 31 has a spring element (not shown) designed as a leg spring element, which is provided for the purpose of the locking element 33 from an unlocked state to a locked state. It goes without saying that another element which appears sensible to a person skilled in the art can also be used as the spring element, which element is the locking element 33 returned to an initial state. The locking element 33 is biased in an unlocked state. The locking element 33 is more biased in an unlocked state than in a locked state.

The first actuator 23 is designed as an actuating pawl and has an elongated extension. The first actuator 23 has a main extension 9 on, which is essentially along a main extension 9 the hand machine tool 11 extends. The first actuator 23 extends along a main extension 9 of a handle area by more than 60%. The first actuator 23 is on the machine housing 13th arranged and opposite the machine housing 13th rotatably movably mounted about an actuating axis. The actuation axis is transverse, in particular essentially perpendicular, to the main extent 9 the hand machine tool 11 arranged.

The first actuator 23 is in a release state with respect to the machine housing 13th the handle axis Ha arranged at an angle. The first actuator 23 is in an actuated state with respect to the machine housing 13th the handle axis Ha arranged essentially in parallel. The first actuator 23 has a with the machine housing 13th connected fixed end and a loose end remote from the fixed end, wherein the locking element 33 is arranged between the fixed end and the loose end. The locking unit 31 is located approximately midway between the fixed end and the loose end. The locking element 33 is arranged in the area of the loose end.

The handle axis Ha can extend along a main extension 9 the handle area of the hand machine tool 11 or the machine housing 13th .

The locking element 33 is on the first actuator 23 arranged and opposite the actuating element 23 rotatably mounted. The first actuator 23 can be actuated by means of an essentially translatory movement, which is in particular radial to the handle axis Ha runs. The locking element 33 can be actuated by means of an essentially translatory movement which is transverse, in particular essentially perpendicular, to the actuation or actuation direction of the first actuating element 23 is.

In 4th to 10 is the actuation unit 21st , in particular the first actuator 23 , by means of an actuation around the handle axis Ha around or tangent to the handle axis Ha the hand machine tool 11 operable. There is an operating force 29 in the circumferential direction around the handle axis Ha on the first actuator 23 applied to the actuation unit 21st to put in an actuation state.

The first actuator 23 is designed as a slide switch and is intended for the handheld power tool 11 or the switch unit 17th by means of a sliding movement of the first actuating element 23 to move. The first actuator 23 extends in the circumferential direction around the handle axis Ha parallel to the machine housing 13th . The first actuator 23 is in the circumferential direction around the handle axis Ha pivoted.

The machine housing 13th the hand machine tool 11 has a housing recess 61 on, which is provided, the actuation unit 21st to record. The machine housing 13th limits the housing recess 61 in one plane through 360 °. The housing recess 61 is provided for this purpose, the first actuating element 23 to be moveable and to be stored in such a way that the first actuating element 23 from an inside to an outside of the machine housing 13th extends. The first actuator 23 is in a housing recess 61 in the machine housing 13th arranged and extends through the housing recess 61 through. The housing recess 61 has an extension in the circumferential direction around the handle axis Ha on which opposite an extension of the first actuating element 23 in the circumferential direction around the handle axis Ha is at least 40% smaller. The housing recess 61 extends along the first actuating element 23 . The housing recess 61 limits movement of the first actuating element 23 in the circumferential direction around the handle axis Ha .

The machine housing 13th has a guide unit 63 on, which is provided, the actuation unit 21st in the circumferential direction around the handle axis Ha along the machine housing 13th respectively. The management unit 63 is as a guide groove 65 designed and provided to extend in the circumferential direction. The guide groove 65 is provided for this purpose, the actuation unit 21st take up and lead in the circumferential direction.

The first actuator 23 forms a handle area and extends along the handle axis Ha compared to an extension of a handle area at least 70%. The first actuator 23 should be manipulated by an operator if necessary. The first actuator 23 has a holding area for grasping by hand.

The first actuator 23 extends opposite the handle axis Ha in the circumferential direction by an angular range of at least 45 °.

The first actuator 23 can be operated counterclockwise and / or clockwise.

The actuation unit 21st has a spring element (not shown) which is provided for the purpose of the first actuating element 23 from an actuated state to a released state. The spring element is designed as a tension-compression spring. It goes without saying that other (spring) elements that appear sensible to a person skilled in the art can also be considered, which are the actuating element 23 reset to a release state.

The first actuator 23 is designed in such a way that the handheld power tool can be actuated 11 or the switch unit 17th by means of a movement along the handle axis Ha or in the circumferential direction around the handle axis Ha is actuatable.

The actuation unit 21st has a first actuating element 23 and one opposite to the first actuating element 23 movably mounted second actuating element 25th on, the first actuating element 23 the second actuating element is provided for this purpose 25th to operate. The second actuator 25th is from the first actuator 23 covered. The second actuator 25th is provided by means of a movement of the first actuating element 23 the switch unit 17th to operate.

The second actuator 25th is with the first actuator 23 coupled such that a movement of the first actuating element 23 around the handle axis Ha around to movement of the second actuating element 25th along the handle axis Ha leads ( 8th to 9 ). The switch unit 17th is below the first actuator 23 arranged. The second actuator 25th is essentially perpendicular to an actuation direction of the first actuation element 23 movably mounted. The first actuator 23 is handle axis Ha swivels around the handle axis Ha stored. The second actuator 25th is mounted so that it can move in translation. The second actuator 25th is along the handle axis Ha movably mounted. The first actuator 23 is opposite the second actuator 25th arranged in parallel.

The actuation unit 21st has a guide unit 63 on, which is provided, the second actuating element 25th compared to the first actuating element 23 respectively. The management unit 63 has a form-fit bump 65 formed form-locking element 51 on which in a form-fitting recess 67 formed further form-fitting element 51 engages. The management unit 63 is provided for a relative movement of the second actuating element 25th compared to the first actuating element 23 to pretend. The form-fit survey 65 is on the second actuator 25th arranged. The form-fit recess 67 is on the first actuator 23 arranged. The form-fit recess 67 can be designed in such a way that the actuation unit 21st can be actuated on both sides, that is to say counterclockwise and clockwise, to the switch unit 17th to operate. For example, the Form-fit recess 67 arrow-shaped. The form-fit recess 67 takes the form-fit survey 65 and performs the form-fit survey 65 along the interlocking recess 67 . The arrow-shaped interlocking recess 67 has an arrowhead section and two arrow arm sections extending outwardly from the arrowhead section. The arrow arm sections are arranged adjacent to the arrowhead section. In a release state or an idle state of the actuation unit 21st is the form-fit survey 65 in an arrowhead section of the interlocking recess 67 arranged ( 8th ). The form-fit bump is in an actuated state 65 in one of the arrow arm sections of the interlocking recess 67 arranged ( 9 ). It goes without saying that other form-locking recesses that appear sensible to a person skilled in the art can also be used 67 can be provided which, for example, an actuation of the first actuating element 23 enable counterclockwise or clockwise.

The first actuator 23 has a extending along the entire length of the actuator 23 extensive increase in activity 71 on, which protrudes in the radial direction. The increase in activity 71 is provided opposite the machine housing 13th stand and a movement of the first actuating element 23 limit in the circumferential direction by increasing the actuation 71 Actuator 23 it is provided for an actuation or movement actuation unit 21st of the first actuating element 23 against which the housing recess 61 limiting machine housing 13th to post.

In 10 is a section through the operating unit 21st shown in which, for example, no second actuator 25th is needed. There is a switch unit on both sides 17th or in each case a switching element arranged which, when the first actuating element is moved 23 in the circumferential direction around the handle axis Ha is actuatable. The first actuator 23 is intended for the switch unit 17th to contact directly.

In 11 to 14th has the actuation unit 21st a first actuator 23 and one opposite to the first actuating element 23 movably mounted second actuating element 25th on. The first actuator 23 is designed as a push button, which is provided for the first actuating element 23 in the direction perpendicular to the handle axis Ha to operate. The first actuator 23 is intended to be the second actuating element 25th to operate and the second operating element 25th in turn, the switch unit 17th to operate. The first actuator 23 is opposite the second actuator 25th arranged in parallel and mounted in a translationally movable manner.

The second actuator 25th is opposite the first actuator 23 to unlock the actuation unit 21st and to actuate the switch unit 17th translationally essentially parallel to the handle axis Ha movably mounted. The second actuator 25th is provided for this purpose, the actuation unit 21st to put by means of a first translational movement from a locked state into an unlocked state and the switch unit 17th to switch by means of a second translational movement. The first translational movement and the second translational movement are essentially parallel to the first actuating element 23 and the second actuator 25th aligned. The first and the second translational movement is essentially along a main extension direction of the handheld power tool 11 or along a handle axis Ha the handle area of the hand machine tool 11 aligned.

The first actuator 23 is provided for this purpose, the second actuating element 25th to be actuated by means of a further translational movement by a distance of the first actuating element 23 compared to the second actuating element 25th is decreased. The further translational movement is oriented essentially perpendicular to the first translational movement and / or the second translational movement. The further translational movement is essentially perpendicular to a main direction of extent of the handheld power tool 11 or radial to the handle axis Ha the handle area of the hand machine tool 11 aligned.

The first actuator 23 forms a handle area. The first actuator 23 can be grasped with the hand of an operator.

The actuation unit 21st has a guide unit 63 on, which is provided, the second actuating element 25th compared to the first actuating element 23 respectively. The management unit 63 has a form-locking element designed as a form-locking elevation 51 on, which in one as a form-fitting recess 67 formed further form-fitting element 51 seizes ( 11 ). The management unit 63 is provided for a relative movement of the second actuating element 25th compared to the first actuator 23 to pretend. The form-fit survey 65 is on the first actuator 23 arranged. The form-fit recess 67 is on the second actuator 25th arranged. The first actuator 23 has one, especially as one Sliding surface formed, sliding element 81 , 83 on, which is provided for a movement of the second actuating element 25th on the first actuator 23 transferred to.

The locking element 33 is provided for this purpose, the first actuating element 23 to be adjusted in such a way that the actuation unit 21st is actuatable. The locking element 33 is provided for this purpose, the second actuating element 25th compared to the first actuating element 23 by means of a leverage of the locking element 33 to adjust or move. The locking element 33 is rotatably mounted and on the first actuating element 23 arranged. The locking element 33 is provided by means of a rotary movement of the locking element 33 the second actuator 25th compared to the first actuating element 23 translationally essentially parallel to the handle axis Ha to adjust.

The locking element 33 is provided for this purpose, the second actuating element 25th compared to the first actuating element 23 to be adjusted relative to actuation of the actuation unit 21st to release. The locking element 33 is provided for this purpose, the first actuating element 23 compared to the second actuating element 25th to move and a relative movement of the first actuating element 23 compared to the second actuating element 25th to release.

The first actuator 23 and the second actuator 25th each have a sliding element 81 , 83 on, which is provided, the switch unit 17th by means of the second actuating element 25th to operate. The sliding element 81 is as a glide bump ( 11 to 13th ) or a sliding recess 83 ( 14th ) be trained. The glider elevation 81 is in or on the first actuating element 23 arranged. The one to the skid bump 81 corresponding sliding recess 83 is in or on the second actuating element 25th arranged. At least the glider elevation 81 has an inclined plane, which is provided for a movement of the second actuating element 25th to be specified positively. The actuation unit 21st each has three sliding elements 81 on the first actuating element 23 and with the sliding elements 81 of the first actuating element 23 corresponding further sliding elements 83 on the second actuating element 25th on.

The second actuator 25th is designed as an actuating disc ( 14th ). The actuating disc has a sliding recess 83 on.

In 14th are three first actuators 23 provided, which are designed as operating buttons and can be operated individually. The first actuators 23 can in the hand machine tool 11 are pressed in and the second actuating element by means of the pressing movement 25th move. Here is the first actuator 23 provided, the second actuating element 25th by means of a substantially perpendicular to the translational movement of the first actuating element 23 to adjust.

In 14th each has the first actuating element 23 a role element 87 on, which is provided, the switch unit 17th by means of the second actuating element 25th to operate. The second actuator 25th is designed as an actuating disc and has several sliding recesses, one of which is attached to the roller elements 87 adapted shape to unroll the rolling elements 87 exhibit.

In a further training according to 15th to 18th can the actuation unit 21st to be provided, the switch unit 17th by means of a deformation of the actuation unit 21st to operate. The actuation unit 21st is at least partially deformable.

The actuation unit 21st is in the housing recess 61 of the machine housing 13th arranged and provided for the housing recess 61 to cover. The actuation unit 21st is intended for the switch unit 17th to operate immediately.

The actuation unit 21st has a first actuating element 23 on, which is provided, the switch unit 17th by means of an elastic deformation of the actuating element 23 , 25th to operate. The elastic deformation is intended to cause a movement on the switch unit 17th to transfer to the switch unit 17th to operate.

The actuation unit 21st has three actuators 23 , 25th on, which are provided, the switch unit 17th by means of an elastic deformation of the actuating unit 21st to operate.

The three actuators 23 , 25th are arranged parallel to one another and coupled to one another. The first actuator 23 extends along the handle axis Ha compared to an extension of the handle area by more than 60%.

Every actuator 23 , 25th is elongated and essentially rod-shaped.

The actuation unit 21st indicates a form-fit survey 65 formed form-locking element 51 on, which is provided with one as a form-fitting recess 67 trained corresponding form-locking element 51 to work together. The form-fit element 51 is as a form-fit survey 65 formed, which is formed in the shape of a circle. The form-fit survey 65 can be designed in the shape of a pin. The corresponding form-fit recess 67 has a cross section which is designed in the form of an elongated hole or an ellipse. The form-fit recess 67 is designed as an insertion recess.

The actuators 23 , 25th are mounted so that they can move relative to one another. The actuators 23 , 25th have a toothing, which a movement of the actuating elements 23 , 25th couples.

The hand machine tool 11 has a locking unit 31 on, which is provided, an actuation of the actuation unit 21st lock in a locked state and unlock in an unlocked state.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102011089717 A1 [0002]

Claims (11)

Hand machine tool, in particular angle grinder, with a drive unit (15) for driving an accessory tool, in particular a grinding and / or cutting disc, with a switch unit (17) for switching the drive unit (15) and with an actuation unit (21) for actuating the switch unit ( 17), characterized in that the actuation unit (21) can be actuated by means of an actuation around a handle axis hA or tangentially to a handle axis hA of the handheld power tool (11). Hand machine tool according to Claim 1 , characterized in that the actuation unit (21) forms a handle area. Hand machine tool according to one of the preceding claims, characterized in that the actuating unit (21) relative to the handle axis hA in the circumferential direction by an angular range of at least 10 °, in particular at least 20 °, preferably at least 30 °, preferably at least 40 °, and / or around at most 90 °, in particular at most 80 °, preferably at most 70 °, more preferably 60 °. Hand machine tool according to one of the preceding claims, characterized in that the actuating unit (21) extends along the handle axis hA compared to an extension of a handle area by more than 40%, preferably by more than 50%, preferably by more than 60%, particularly preferably by more than 70%, more preferably more than 80%. Hand machine tool according to one of the preceding claims, characterized in that the actuating unit (21) can be actuated in a counterclockwise and / or clockwise rotation. Hand machine tool (1) 1) according to one of the preceding claims, characterized by a spring element which is provided to reset the actuation element (23) from an actuation state to a release state. Hand machine tool according to one of the preceding claims, characterized in that the actuation unit (21) is designed in such a way that the hand machine tool (11) of the switch unit (17) can be actuated by means of a movement along the handle axis hA or in the circumferential direction around the handle axis hA. Hand machine tool according to one of the preceding claims, characterized in that the actuation unit (21) has a first actuation element (23) and a second actuation element (25) mounted movably relative to the first actuation element (23). Hand machine tool according to one of the preceding claims, characterized in that the actuation unit (21) has a guide unit (63) which is provided to guide the second actuation element (25) relative to the first actuation element (23). Hand machine tool according to one of the preceding claims, characterized in that the first actuating element (23) is arranged parallel to the second actuating element (25). Hand machine tool according to one of the preceding claims, characterized in that the actuation unit (21) has an actuation elevation (7) 1) which protrudes in the radial direction.

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