Hand-held power tool and hand-held power tool device

Abstract

The invention relates to a hand-held power tool (10), in particular a chain saw, comprising a hand guard (12) and at least one mechanical control unit (14) for controlling the movement of the hand guard (12) of the hand-held power tool (10). According to the invention, the control unit (14) has at least one mechanical control element (18), which is arranged to control the rotational movement of the handguard lever (12) by means of an axial relative movement between the control element (18) and the handguard lever (12).

Description

Background Art

[0001] A handheld power tool is proposed which has a hand guard and at least one mechanical control unit for controlling the movement of the hand guard of the handheld power tool. Summary of the invention

[0002] The invention is based on a handheld power tool, in particular a chain saw, having a hand guard and at least one mechanical control unit for controlling the movement of the hand guard of the handheld power tool.

[0003] It is proposed that the control unit has at least one mechanical control element which is provided for controlling a rotational movement of the hand guard by means of an axial relative movement between the control element and the hand guard.

[0004] The configuration according to the invention of the hand-held machine tool allows for a particularly space-saving motion control of the hand guard. Advantageously, the control element can be arranged particularly closely on the hand guard. Advantageously, a particularly precise motion control can be achieved. Advantageously, a particularly simple assembly of the control unit can be achieved. The configuration according to the invention of the control unit, in particular the control element, allows for an improvement in the operation of the hand guard, in particular the tactile feel during movement. By controlling the motion of the hand guard with the aid of the control unit, a particularly comfortable user experience can be achieved. Advantageously, the force design required for the movement of the hand guard can be particularly simple and / or precisely adapted and adjusted. Advantageously, a control unit that can be used particularly flexibly can be provided.

[0005] The handheld power tool is preferably designed as a chain saw, such as a fuel-operated chain saw, in particular a gasoline-operated chain saw, an electric chain saw, a compressed air-operated chain saw, an oil-operated chain saw, etc. However, it is also conceivable that the handheld power tool is designed as pruning shears, a drilling machine, a cutting grinder, a handheld circular saw, etc.

[0006] The handheld machine tool, in particular the chain saw, is preferably configured as a two-handed chain saw. Preferably, the handheld machine tool, in particular the chain saw has two handles. One of the two handles is arranged on the side of the tool receiving area of ​​the handheld machine tool away from the handheld machine tool. In the tool receiving area, it is preferably possible to arrange, in particular, already arranged, a tool for the handheld machine tool. The tool is preferably configured as a saw chain. However, alternatively, it is also conceivable that, in particular according to the configuration of the handheld machine tool, the tool is configured as a drill, a cutting disc, a saw blade, etc. An accelerator lever and / or an accelerator lever lock are preferably arranged on the handle. The other of the two handles is preferably configured as a handle bow or a handle tube. The other handle is arranged between the handle and the tool receiving area. The hand guard bar is set to be particularly used to protect the operator's hand acting on the other handle, preferably in order to protect the operator, in particular the operator's hand or arm acting on the other handle, to prevent contact with the tool. "Setting" should be understood as specially configured, specially designed and / or specially equipped. The object is set for a specific function, which should be understood as the object meeting and / or performing the specific function in at least one application and / or operating state. The hand guard lever is particularly arranged between the other handle and the tool receiving area, preferably the tool. The hand guard lever is preferably arranged to trigger a brake, preferably a chain brake, of the handheld power tool, especially in the case of an unexpected kickback (knockback) of the handheld power tool. The brake is preferably arranged to stop the tool, especially the saw chain, within a fraction of a second when the brake is triggered, for example due to the kickback of the handheld power tool, preferably by mechanical and / or electronic means. The brake can preferably be triggered by the movement of the hand guard lever, especially by the rotation of the hand guard lever around the rotation axis of the hand guard lever, preferably by the forward rotation of the hand guard lever around the rotation axis. For example, the handheld power tool has a trigger element, which can be operated by the hand guard lever when the hand guard lever is rotated forward from the middle position, preferably when the hand guard lever moves into the trigger position. The trigger element is particularly arranged to trigger the brake when the trigger element is operated. The trigger element is, for example, constructed as a button, a joystick, a transmission element, etc. In particular, a movement of the hand guard lever, in particular a forward rotation of the hand guard lever, can be produced by a contact of the hand or arm of the operator with the hand guard lever (for example, by a kickback of the hand tool), preferably for triggering a brake, in particular for actuating a trigger element. The hand guard lever is preferably rotatably mounted, in particular rotatably mounted about a rotation axis, on a hand tool housing of the hand tool. The forward rotation of the hand guard lever is in particular a rotation of the hand guard lever in the direction of a tool receiving area, preferably a tool.

[0007] The mechanical control unit is particularly configured as a mechanical control unit for the movement of the hand guard. The mechanical control unit is preferably a particularly purely mechanical transmission device for the movement control of the hand guard. The movement behavior of the hand guard is particularly determined by the control unit. The hand guard is preferably rotated forward by at least 10°, preferably at least 15°, and more preferably at least 20° around the axis of rotation from the middle position of the hand guard, and the hand guard can preferably move to the trigger position and can especially trigger the brake relative to the control element. In order to move the hand guard from the middle position to the trigger position or from the trigger position to the middle position, an operating force must be applied to the hand guard. At the operating point of the hand guard, the operating force for moving the hand guard from the middle position to the trigger position or from the trigger position to the middle position is preferably between 20N and 60N. However, alternatively, it can be considered that at the operating point of the hand guard, the operating force for moving the hand guard from the middle position to the trigger position or from the trigger position to the middle position has a value different from between 20N and 60N. The operating point is preferably located on the free end of the hand guard. The distance between the actuation point and the axis of rotation is preferably between 100 mm and 140 mm, more preferably between 110 mm and 130 mm, particularly preferably 120 mm.

[0008] The axial relative movement between the control element and the hand guard is preferably carried out at least parallel to the rotation axis of the hand guard. The relative movement between the control element and the hand guard is preferably carried out along the rotation axis of the hand guard. The rotation axis preferably corresponds to the axial movement axis of the axial relative movement between the control element and the hand guard. Preferably, the hand guard is fixed in the axial direction, especially relative to the handheld tool housing. Preferably, the control element is movable in the axial direction, especially relative to the handheld tool housing. Alternatively, it can also be considered that the hand guard is movable in the axial direction, especially relative to the handheld tool housing, and the control element is fixed in the axial direction, especially relative to the handheld tool housing. In addition, it can be considered that the hand guard and the control element are movable in the axial direction, especially relative to the handheld tool housing. In particular, the rotational movement of the hand guard around the rotation axis produces the axial movement of the control element, especially the movement of the control element along the rotation axis. The rotation axis extends at least substantially perpendicular to the main extension axis of the handheld tool. “Substantially perpendicular” may be understood to mean an orientation of a direction relative to a reference direction, wherein the direction and the reference direction, in particular when viewed in the projection plane, enclose an angle of 90°, and the angle has a maximum deviation of in particular less than 8°, advantageously less than 5°, particularly advantageously less than 2°. A “main extension axis” of an object may be understood here in particular to mean an axis parallel to the longest side of a smallest geometric cuboid that just completely encloses the object.

[0009] In addition, it is proposed that the control element has at least one control surface that is set to be used for axial movement, especially for axial movement of the control element. Advantageously, the particularly precise motion control of the hand guard can be achieved. Preferably, the axial relative movement between the control element and the hand guard can be achieved by the joint action of the control surface and the hand guard. For example, the hand guard acts together with the control surface during the rotational movement of the hand guard to produce the axial relative movement between the hand guard and the control element. In particular, the main extension plane of the control surface extends obliquely relative to the axis of rotation and is particularly different from the 90° extension. The "main extension plane" of a structural unit or element can be understood as a plane parallel to the maximum side of the smallest imaginary cuboid that just completely surrounds the structural unit and especially through the center of the cuboid. The control surface is preferably constructed as a plane. However, it is also conceivable that the control surface is at least partially curved. The control surface is preferably a part of the ramp element of the control element. The ramp element is preferably constructed as a triangle, especially a double-sided ramp, preferably without an intermediate piece. The control surface corresponds in particular to one side of the preferably double-sided ramp. The control element preferably has a plurality of ramp elements and / or control surfaces for, in particular, axial displacement of the control element. The ramp elements and / or control surfaces are preferably arranged around the rotation axis, in particular around the axial movement axis, preferably evenly arranged, in particular in at least one operating state. The ramp elements, in particular the control surfaces, preferably form a sawtooth-like course, in particular around the axial movement axis and / or the rotation axis. The main extension planes of the control surfaces preferably enclose the same angle with a plane extending perpendicularly to the rotation axis, in particular the axial movement axis.

[0010] In addition, it is proposed that the control unit has at least one other mechanical control element, wherein the control element and the other control element have complementary control surfaces arranged for axial movement, wherein in particular, the other control element is connected to the hand guard rod in a torsion-proof manner. The other control element is preferably integrally constructed with at least a portion of the hand guard rod. "Integral construction" can be understood as at least materially connected, for example, by welding, bonding, injection molding and / or other processes that seem meaningful to those skilled in the art, and / or advantageously formed in one piece, for example, by manufacturing from a casting or by a single-component or multi-component injection molding method, and advantageously manufactured from a single blank. However, alternatively, it can also be considered that the other control element can also be fastened to the hand guard rod in a particularly detachable manner by means of a threaded connection, a latch connection, a clamping connection, a riveted connection, etc. In this context, "detachable" should be understood in particular as "separated without damage". The other control element is preferably rigidly connected to the hand guard rod. The other control element particularly has at least one control surface, preferably a plurality of control surfaces. The other control element preferably has at least one ramp element, preferably a plurality of ramp elements, which have a control surface of the other control element. At least one ramp element of another control element is particularly constructed complementary to at least one ramp element of the control element. In particular, by the rotational movement of the hand guard, the control element and the control surface complementary to the other control element can produce an axial relative movement between the control element and the hand guard, in particular, the other control element. Preferably, the control surfaces of the control element and the other control element that interact, in particular, abut against each other, preferably at least their main extension planes, in particular, extend at least substantially parallel to each other in at least one operating state. The ramp element of the control element and / or the ramp element of the other control element preferably have at least two different types of ramp elements, which are different in ramp height and ramp width. These two types of ramp elements are preferably arranged alternately around the rotation axis, in particular around the axial motion axis. The ramp height of the ramp element is in particular at least substantially parallel to the rotation axis, in particular the axial motion axis. The ramp width of the ramp element extends in a circumferential direction in a plane perpendicular to the rotation axis, in particular the axial motion axis. In particular, when the hand guard rotates around the rotation axis, the other control element rotates relative to the control element around the rotation axis. Preferably, the rotation of the further control element relative to the control element, in particular when the hand guard lever is rotated relative to the control element about the rotation axis, generates an axial relative movement between the control element and the hand guard lever, in particular the further control element. When the hand guard lever transitions from the intermediate position to the trigger position or vice versa, the tip of at least one ramp element of the control element in particular exceeds the tip of at least one ramp element of the further control element.In particular, when the hand guard lever transitions from the intermediate position to the trigger position or from the trigger position to the intermediate position, the tip of at least one ramp element of the ramp element type with a relatively large ramp height in the control element or another control element exceeds the tip of at least one ramp element of the ramp element type with a relatively small ramp height in the other control element or the control element.

[0011] In addition, it is proposed that the handheld power tool has a handheld power tool housing, in particular as described above, which has at least one bearing unit for supporting at least a part of the control unit, in particular for supporting an axially movable control element in a rotationally fixed manner. Advantageously, a particularly compact arrangement of the control unit in the handheld power tool housing can be achieved. It is possible to assemble the control unit, in particular the control element, in the handheld power tool housing in a particularly simple manner. The bearing unit has at least one bearing element for the control element. The control element is preferably supported on the handheld power tool housing in a rotationally fixed manner, in particular around the axis of rotation and / or the axis of movement, by means of a bearing element. The control element is preferably connected to the handheld power tool housing in an axial direction, in particular along the axis of movement, preferably along the axis of rotation, in a movably supported manner by means of a bearing unit, in particular a bearing element. The bearing element is preferably integrally constructed with at least a part of the handheld power tool housing. Alternatively, it is also conceivable that the bearing element is fastened to the handheld power tool housing in a particularly detachable manner by means of a threaded connection, a latching connection, a clamping connection, a riveted connection, etc. The bearing element preferably has a shape complementary to the free end of the control element. At least one control surface of the control element and / or at least one ramp element of the control element are arranged on the other free end of the control element. The free end of the control element is arranged in particular away from the other free end of the control element. The control element is connected to the support element in particular on the side away from at least one control surface of the control element and / or away from at least one ramp element of the control element. The support unit preferably has at least one other support element for the hand guard rod. Preferably, the hand guard rod is rotatably supported on the handheld machine tool housing by the support unit, in particular another support element, in particular around the axis of rotation and / or the axis of motion, in particular through the support sleeve of the hand guard rod. The hand guard rod is preferably fastened to the handheld machine tool housing by a support sleeve, such as a screw, a rivet, etc. and / or by a clamping connection, a locking connection, etc. The hand guard rod is preferably fixed to the handheld machine tool housing in an axial direction, in particular along the axis of motion, preferably along the axis of rotation, by a support unit, in particular another support element. Another support element is preferably constructed integrally with at least a portion of the handheld machine tool housing. Alternatively, it is also conceivable that the further bearing element is fastened to the hand-held power tool housing, in particular detachably, by means of a screw connection, a latching connection, a clamping connection, a riveted connection or the like.

[0012] In addition, it is proposed that the support unit predetermines at least one arrangement angle of the control element on the support unit. Advantageously, the design structure can be simply prevented from incorrectly assembling the control element on the support unit, especially on the housing of the handheld machine tool. Advantageously, a particularly simple and / or user-friendly assembly of the control element can be achieved. The functional reliability of the control unit can be advantageously supported by the configuration of the support unit according to the invention. A particularly reliable control unit can be provided. In particular, the support unit, preferably the support element, allows the control element to be assembled on the support unit only in one or more angular positions of the control element relative to the support unit, especially the support element. The support element preferably has a support profile, which is particularly configured to complement the support connection profile of the control element. The support profile of the support element preferably allows the control element to be assembled only in one or more angular positions of the control element relative to the support unit, especially the support element. The support element, especially the support profile, preferably has one or more protrusions, one or more grooves, a combination thereof, etc.

[0013] In addition, it is proposed that the control unit is arranged to allow the hand guard lever to rotate forward and backward relative to the control element, especially the previously described intermediate position of the hand guard lever. Advantageously, the hand guard lever can be used to meet more functions through the configuration of the control unit according to the present invention. Advantageously, the backward rotation of the hand guard lever can at least partially absorb the impact effect on the hand tool machine when the hand tool machine falls when it hits the hand guard lever. Advantageously, damage to the hand tool machine, especially the hand guard lever, can be prevented. A particularly strong hand guard lever can be provided. Advantageously, a particularly high working safety can be achieved. A particularly durable hand guard lever can be achieved. The backward rotation of the hand guard lever is especially the rotation of the hand guard lever in the direction opposite to the forward rotation of the hand guard lever. The backward rotation of the hand guard lever is especially the rotation of the hand guard lever in the direction away from the tool receiving area. The backward rotation of the hand guard lever is preferably the rotation of the hand guard lever in the direction of the handle and / or another handle. The backward rotation of the hand guard lever is especially the rotation of the hand guard lever around the rotation axis.

[0014] In addition, it is proposed that the control unit has at least one spring element, especially a helical spring, which is arranged to load the control element with a force in the direction of the hand guard lever, wherein in particular, the spring element at least partially surrounds the control element in at least one operating state, preferably at least in the direction extending parallel to the axis of rotation. Advantageously, the hand guard lever can be particularly accurately controlled in motion. A particularly comfortable operating feel can be achieved when the hand guard lever is moved by the operator. Advantageously, a particularly high operational safety of the control unit can be achieved. Advantageously, the control unit can be particularly simple, accurate and / or flexibly matched to different requirements. The spring element is preferably arranged between the control element and the handheld machine tool housing at least in one operating state. "An object at least partially surrounds another object" should be understood in particular that another object is surrounded by the object within an angle range of at least 45°, preferably at least 90°, and particularly preferably at least 180°. The spring element preferably at least substantially completely surrounds the control element, especially at least in the direction extending parallel to the axis of rotation. "An object at least substantially completely surrounds another object" should be understood in particular as the other object being surrounded by the object within an angular range of at least 270°, preferably at least 315°, and particularly preferably at least 350°. Particularly preferably, the spring element completely surrounds the control element, in particular at least when viewed in a direction parallel to the axis of rotation. The spring element, in particular at least in one operating state, at least partially, preferably at least substantially completely, particularly preferably completely surrounds the support element and / or another support element, in particular at least when viewed in a direction extending parallel to the axis of rotation. The spring element preferably at least partially, preferably at least substantially completely, particularly preferably completely surrounds the support sleeve of the hand guard rod, in particular at least when viewed in a direction parallel to the axis of rotation, in particular the axis of motion. The spring element preferably rests on the housing of the handheld machine tool, in particular with the free end of the spring element. The spring element preferably rests on the control element, preferably on the contact surface of the control element, in particular with the other free end of the spring element. The free end of the spring element is arranged in particular away from the other free end of the spring element. The main extension plane of the contact surface extends at least substantially perpendicular to the axis of rotation and / or the axis of motion. In order to make the hand guard lever rotate, especially from the static position of the hand guard lever, an operating force is preferably applied that overcomes the spring force that can be generated by the spring element. The spring element is preferably configured as a helical spring. Alternatively, it is also conceivable that the spring element is configured as a torsion spring, a rubber elastic element, etc. The control unit preferably has exactly one spring element, especially as described above. Alternatively, it is also conceivable that the control unit can also have multiple spring elements, especially in order to load the control element with a force in the direction of the hand guard lever. The movement of the control element along the axial movement axis, especially along the rotation axis, especially produces compression or extension of the spring element. The tension and / or compression axis of the spring element extends at least substantially parallel to the rotation axis and / or the axial movement axis, at least in one operating state.

[0015] Furthermore, it is proposed that the spring element automatically moves the hand guard into the intermediate position after the hand guard has been rotated backwards from the intermediate position of the hand guard, in particular as described above. Advantageously, a particularly high level of operating comfort of the hand tool, in particular the hand guard, can be achieved. The control element and the further control element preferably have complementary control surfaces, which are arranged to enable the hand guard to be automatically moved into the intermediate position by means of the spring element after the hand guard has been rotated backwards from the intermediate position of the hand guard.

[0016] In addition, it is proposed that the control unit has a stop element, which is arranged to limit the backward rotation of the hand guard from the middle position of the hand guard, especially the middle position already described before, especially by the hand guard stopping on the stop element. Advantageously, the minimum distance specified between the hand guard and the other handle can be maintained. Advantageously, the hand of the operator acting on the other handle can be prevented from being injured due to the impact of the hand guard. Advantageously, particularly high work safety can be achieved. It can be considered that the backward rotation of the hand guard from the middle position is limited by the hand guard and / or the control element stopping on the stop element. The stop element especially defines the stop position of the hand guard. The middle position is preferably arranged between the trigger position and the stop position. The middle position and / or the trigger position are preferably the static position of the hand guard. In order to move the hand guard from the static position, preferably the trigger position or the middle position of the hand guard, an operating force must be applied to the hand guard. The static position of the hand guard, especially the trigger position and / or the middle position are preferably defined by the complementary control surfaces of the control unit, especially the control element and another control element.

[0017] In addition, it is proposed that the handheld machine tool has a handheld machine tool housing, in particular as described above, wherein the outer wall of the handheld machine tool housing has a stop element. Advantageously, the force acting when the hand guard bar stops on the stop element is kept particularly small by the arrangement of the stop element according to the invention. The required reinforcement of the handheld machine tool housing in the area of ​​the stop element can be kept particularly small, or the additional reinforcement of the handheld machine tool housing in the area of ​​the stop element can be advantageously completely omitted. Material can be saved when manufacturing the handheld machine tool housing. Advantageously, a handheld machine tool housing with particularly low cost can be provided. The stop element is, for example, constructed as a stop edge, etc. Preferably, the hand guard bar and / or the control element have a stop surface complementary to the stop element.

[0018] In addition, it is proposed that the handheld machine tool has at least one operating element, in particular a switch element, for triggering a handheld machine tool function, in particular a safety function, which can be operated by rotating the hand guard lever backward from the middle position of the hand guard lever. Advantageously, the rotation of the hand guard lever backward from the middle position can be used to trigger the handheld machine tool function. Advantageously, a particularly large number of operating possibilities for the handheld machine tool can be achieved by the operator. The handheld machine tool function can be, for example, an additional activation phase for starting the handheld machine tool, a safety function, such as a trigger for a brake, an automatic system check of the handheld machine tool or the like. Preferably, when the hand guard lever is rotated backward from the middle position, the operating element can be operated by the hand guard lever, for example, by a protrusion of the hand guard lever, etc. The operating element is, for example, constructed as a button, a joystick, a transmission element, etc.

[0019] It is further proposed that the operating element can be operated starting from the middle position of the hand guard lever by rotating the hand guard lever backwards until the stop element. Advantageously, accidental operation of the operating element can be at least partially prevented. It is conceivable that the operating element is arranged on the stop element. Alternatively, it is also conceivable that the operating element is arranged spaced apart from the stop element.

[0020] It is further proposed that at least the control element is arranged at least in the vicinity of the rotation axis of the hand guard, in particular as already described above, in particular in a closed manner around the rotation axis. Advantageously, a particularly space-saving control unit can be provided. A particularly advantageous action chain can be achieved between the hand guard and the control element. Advantageously, a particularly precise and / or reliable motion control of the hand guard can be achieved. A "nearby area" is to be understood in particular as an area whose maximum distance from the reference axis is preferably less than 10 cm, more preferably less than 5 cm, particularly preferably less than 2 cm. The control element preferably at least substantially completely surrounds, preferably completely surrounds, the rotation axis, in particular at least when viewed in a direction parallel to the rotation axis.

[0021] The invention is also based on a handheld power tool device for a handheld power tool, in particular a chain saw, in particular according to the invention, having at least one mechanical control unit, in particular as described above, for controlling the movement of a hand guard, in particular as described above, of the handheld power tool. It is proposed that the control unit has at least one mechanical control element, in particular as described above, which is configured to control the rotational movement of the hand guard by an axial relative movement between the control element and the hand guard, at least substantially along the rotational axis, in particular as described above, of the hand guard.

[0022] The configuration according to the invention of the hand-held power tool device allows for a particularly space-saving motion control of the hand guard. Advantageously, the control element can be arranged particularly closely on the hand guard. Advantageously, a particularly precise motion control can be achieved. Advantageously, a particularly simple assembly of the control unit can be achieved. The configuration according to the invention of the control unit, in particular the control element, enables an improvement in the operation of the hand guard, in particular the tactile feel during movement. By controlling the motion of the hand guard with the aid of the control unit, a particularly comfortable user experience can be achieved. Advantageously, a particularly simple and / or precisely adapted and / or adjustable force required for the movement of the hand guard can be designed. Advantageously, a control unit that can be used particularly flexibly can be provided.

[0023] The handheld power tool according to the invention and / or the handheld power tool device according to the invention should not be limited to the applications and embodiments described above. The handheld power tool according to the invention and / or the handheld power tool device according to the invention can have a number that deviates from the number of individual elements, components and units and method steps described here, in particular to meet the working method described here. In addition, in the value ranges given in this disclosure, the values ​​within the extreme values ​​are also to be regarded as public and can be used arbitrarily. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Further advantages are derived from the following description of the drawings. Embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain features in multiple combinations. A person skilled in the art can also consider the features individually and combine them into other meaningful combinations. The drawings show:

[0025] Figure 1 : A side view of a handheld power tool according to the present invention,

[0026] Figure 2 : An exploded view of a part of a handheld power tool according to the present invention,

[0027] Figure 3 : A three-dimensional view of the control elements of the mechanical control unit of the handheld power tool according to the invention,

[0028] Figure 4 : A three-dimensional view of a support unit of a hand-held power tool according to the present invention,

[0029] Figure 5 : A cross-sectional view of a portion of a hand-held power tool according to the invention,

[0030] Figure 6 : A hand guard of a handheld power tool according to the invention in its middle position,

[0031] Figure 7: The hand guard is in its triggered position,

[0032] Figure 8 : The hand guard when the hand guard is rotated backwards from the neutral position, and

[0033] Fig. 9 : The hand guard is in the stop position when the hand guard is rotated backwards from the central position. DETAILED DESCRIPTION

[0034] Figure 1 A handheld power tool 10 is shown. The handheld power tool 10 is configured as a chain saw. The handheld power tool 10 is configured as an electric chain saw, in particular a battery-operated chain saw. Alternatively, it is conceivable that the handheld power tool 10 is configured as a fuel-operated chain saw, in particular a gasoline-operated chain saw, a compressed air-operated chain saw, an oil-operated chain saw, a pruning shear, a drilling machine, a cutting grinder, a manual circular saw, etc.

[0035] The handheld power tool 10 is configured as a two-handed chain saw. The handheld power tool 10 has two handles 54, 56. One of the two handles 54, 56 is arranged on a side 64 of the handheld power tool 10 that faces away from a tool receiving area 62 of the handheld power tool 10. A tool (not shown here) for the handheld power tool 10 can be arranged, especially already arranged, in the tool receiving area 62. The tool is configured as a saw chain. However, alternatively, it is conceivable that, especially according to the configuration of the handheld power tool 10, the tool is configured as a drill, a cutting disc, a saw blade, etc. An accelerator lever 66 and / or an accelerator lever lock 68 are preferably arranged on the handle 54. The other handle 56 of the two handles 54, 56 is configured as a handle bow or a handle tube. The other handle 56 is arranged between the handle 54 and the tool receiving area 62. The other handle 56 is configured as a handle bow or a handle tube.

[0036] The handheld power tool 10 has a hand guard 12. The hand guard 12 is provided to protect the hand of an operator acting on the other handle 56, in particular to protect the operator, preferably the hand or arm of the operator acting on the other handle 56, from contact with the tool.

[0037] The hand guard 12 is arranged between the other handle 56 and the tool receiving area 62. The hand guard 12 is designed to trigger a brake (not shown here), preferably a chain brake, of the hand-held power tool 10, in particular in the event of an unexpected kickback (knockback) of the hand-held power tool 10. The brake is preferably designed to stop the tool, in particular a saw chain, within a fraction of a second when the brake is triggered, for example due to a kickback of the hand-held power tool 10, preferably by mechanical and / or electronic means. The brake can be triggered by a movement of the hand guard, in particular by a rotation of the hand guard 12 about the rotation axis 38 of the hand guard 12, preferably by a forward rotation of the hand guard 12 about the rotation axis 38 (see Figure 2 ). The axis of rotation 38 extends at least substantially perpendicularly to the main extension axis of the handheld power tool 10. The handheld power tool 10 has a trigger element 60. The trigger element 60 can be actuated by the handguard 12 by rotating the handguard 12 forward from a central position, preferably when the handguard 12 moves into the trigger position of the handguard 12. The trigger element 60 is particularly configured to trigger a brake when the trigger element 60 is actuated. The trigger element 60 is configured as a button or the like. Contact of the operator's hand or arm with the handguard 12 (for example, due to a kickback of the handheld power tool 10) can produce a movement of the handguard 12, in particular a forward rotation of the handguard 12, in order to trigger the brake, in particular to actuate the trigger element 60. The handguard 12 is rotatably supported on the handheld power tool housing 26 of the handheld power tool 10, in particular rotatably supported about the axis of rotation 38. The forward rotation of the handguard 12 is a rotation of the handguard 12 in the direction of the tool receiving area 62 (see also Figure 1 The forward rotation direction 50 of the forward rotation of the hand guard bar 12 in FIG.

[0038] The handheld power tool 10 has a handheld power tool device 40 . The handheld power tool 10 , in particular the handheld power tool device 40 , has a mechanical control unit 14 for controlling the movement of the hand guard 12 . The movement behavior of the hand guard 12 is determined by the control unit 14 .

[0039] By rotating the hand guard 12 forward from the middle position of the hand guard 12, in particular by rotating the hand guard 12 about the rotation axis 38 by at least 10°, preferably at least 15°, more preferably at least 20° relative to the control element 18 of the control unit 14, the hand guard 12 can be moved into the triggering position of the hand guard 12. The brake can be triggered by the movement of the hand guard 12 into the triggering position. In order to move the hand guard 12 from the middle position into the triggering position or from the triggering position into the middle position, an actuating force must be applied to the hand guard 12. At the actuating point 70 of the hand guard 12, the actuating force for moving the hand guard 12 from the middle position into the triggering position or from the triggering position into the middle position is between 20 N and 60 N. The actuating point 70 is located at a free end 72 of the hand guard 12. The distance between the actuating point 70 and the rotation axis 38 is preferably between 100 mm and 140 mm, more preferably between 110 mm and 130 mm, and particularly preferably 120 mm.

[0040] The control unit 14 has at least a mechanical control element 18. The control element 18 is provided for controlling the rotational movement of the hand guard lever 12 by an axial relative movement between the control element 18 and the hand guard lever 12. The axial relative movement between the control element 18 and the hand guard lever 12 is at least parallel to the rotation axis 38 of the hand guard lever 12. The relative movement between the control element 18 and the hand guard lever 12 is carried out along the rotation axis 38 of the hand guard lever 12. The rotation axis 38 preferably corresponds to the axial movement axis 74 of the axial relative movement between the control element 18 and the hand guard lever 12. The hand guard lever 12 is fixed in the axial direction, in particular relative to the hand tool housing 26. The control element 18 is movable in the axial direction, in particular relative to the hand tool housing 26. Alternatively, it is conceivable that the hand guard lever 12 is movable in the axial direction, in particular relative to the hand tool housing 26, and the control element 18 is fixed in the axial direction, in particular relative to the hand tool housing 26. Furthermore, it is alternatively conceivable that the hand guard 12 and the control element 18 are movable in the axial direction, in particular relative to the hand tool housing 26. The rotational movement of the hand guard 12 about the rotation axis 38 can generate an axial movement of the control element 18, in particular a movement of the control element 18 along the rotation axis 38.

[0041] The control element 18 has a plurality of control surfaces 20, 46 arranged for axial movement (for a clearer illustration, in FIG. Figure 3Only selected control surfaces 20, 46 of the control element 18 are provided with reference numerals). Alternatively, it is conceivable that the control element 18 has a different number of control surfaces 20, 46 than the control surfaces 20, 46 shown here by way of example, in particular, at least one control surface 20, 46. The axial relative movement between the control element 18 and the hand guard 12 can be achieved by the interaction of at least a portion of the control surfaces 20, 46 with the hand guard 12. During the rotational movement of the hand guard 12, the hand guard 12 interacts with at least a portion of the control surfaces 20, 46 to produce an axial relative movement between the hand guard 12 and the control element 18. The main extension planes of the control surfaces 20, 46 are inclined relative to the axis of rotation 38, in particular, are not equal to 90°. The control surfaces 20, 46 are constructed in a plane. However, it is also conceivable that the control surfaces 20, 46 are constructed at least partially curved. Each of the two control surfaces 20, 46 is part of the ramp element 76 of the control element 18.

[0042] The control element 18 has a plurality of ramp elements 76 (only one of the ramp elements 76 is provided with a reference numeral in the figure). Alternatively, it is conceivable that the control element 18 has a number of ramp elements 76 different from the ramp elements 76 of the control element 18 shown here. The ramp elements 76 are configured as triangles, in particular as double-sided ramps, preferably without intermediate pieces. Each of the two control surfaces 20, 46 corresponds to the side of the preferably double-sided ramp. The ramp elements 76 and / or the control surfaces 20, 46 are arranged around the rotation axis 38, in particular around the axial motion axis 74, preferably evenly arranged. The ramp elements 76 of the control element 18 have two different types of ramp elements 76, which are different in ramp height and ramp width. These two types of ramp elements 76 are arranged alternately around the rotation axis 38, in particular around the axial motion axis 74. The ramp height of the ramp element 76 extends at least substantially parallel to the rotation axis 38, in particular parallel to the axial motion axis 74. The ramp width of the ramp element 76 extends in the circumferential direction in a plane perpendicular to the rotation axis 38 , in particular the axial movement axis 74 .

[0043] The ramp elements 76, in particular the control surfaces 20, 46, form a sawtooth profile, in particular about the axial movement axis 74 and / or the rotation axis 38. The main extension planes of the control surfaces 20, 46 enclose the same angle with a plane extending perpendicularly to the rotation axis 38, in particular the axial movement axis 74.

[0044] The control unit 14 has at least one further mechanical control element 22. The control element 18 and the further control element 22 have complementary control surfaces 20, 24, 42, 44, 46, 48 which are provided for axial displacement. The further control element 22 has a plurality of control surfaces 24, 42, 46, 48 which are provided for axial displacement (for a clearer illustration, only selected control surfaces 24, 42, 46, 48 of the further control element 22 are provided with reference numerals in the figure). Alternatively, it is conceivable that the further control element 22 has a different number of control surfaces 24, 42, 46, 48 than the number of control surfaces 24, 42, 46, 48 shown here by way of example.

[0045] The other control element 22 has a plurality of ramp elements 78, 80 (only two ramp elements 78, 80 are provided with reference numerals in the figure). Alternatively, it is conceivable that the other control element 22 has a number of ramp elements 78, 80 different from the number of ramp elements 78, 80 of the other control element 22 shown here. The ramp elements 78, 80 of the other control element 22 are designed complementary to the ramp elements 76 of the control element 18, in particular similarly. The control surfaces 24, 42, 46, 48 of the other control element 22 are designed complementary to the control surfaces 20, 46 of the control element 18, in particular similarly. The ramp elements 78, 80 of the other control element 22 have two different types of ramp elements 78, 80, which differ in ramp height and ramp width. The two types of ramp elements 78, 80 are arranged alternately around the rotation axis 38, in particular around the axial movement axis 74.

[0046] By means of a rotational movement of the hand guard 12, in particular relative to the control element 18, an axial relative movement between the control element 18 and the hand guard 12, in particular the further control element 22, can be produced by the interaction of complementary control surfaces 20, 24, 42, 44, 46, 48 of the control element 18 and the further control element 22. The control surfaces 20, 24, 42, 44, 46, 48 of the control element 18 and the further control element 22 that interact, in particular abut against one another, preferably at least their main extension planes extend at least substantially parallel to one another.

[0047] The further control element 22 is connected to the hand guard 12 in a rotationally fixed manner. The further control element 22 is formed integrally with at least a portion of the hand guard 12. However, it is also conceivable as an alternative that the further control element 22 is fastened to the hand guard 12, in particular detachably, by means of a threaded connection, a latching connection, a clamping connection, a riveted connection, etc. The further control element 22 is rigidly connected to the hand guard 12.

[0048] When the hand guard 12 rotates about the rotation axis 38, the further control element 22 rotates relative to the control element 18 about the rotation axis 38. The rotation of the further control element 22 relative to the control element 18, in particular when the hand guard 12 rotates relative to the control element 18 about the rotation axis 38, generates an axial relative movement between the control element 18 and the hand guard 12, in particular the further control element 22.

[0049] The handheld power tool housing 26 has a support unit 28 for supporting at least a part of the control unit 14 (see Figure 4 ). The support unit 28 is provided for supporting the axially movable control element 18 in a rotationally fixed manner. The support unit 28 has at least one support element 82 for the control element 18. The control element 18 is supported on the hand-held power tool housing 26 in a rotationally fixed manner, in particular around the rotation axis 38 and / or the axial movement axis 74, by means of the support element 82, at least in one operating state. The control element 18 is connected to the hand-held power tool housing 26 in an axial direction, in particular along the movement axis 74, preferably along the rotation axis 38, by means of the support element 82 so as to be movably supported. The support element 82 is integrally constructed with at least a portion of the hand-held power tool housing 26. Alternatively, it is also conceivable that the support element 82 is fastened to the hand-held power tool housing 26 in a particularly detachable manner by means of a threaded connection, a latching connection, a clamping connection, a riveted connection, etc.

[0050] The support element 82 has a shape that is complementary to the free end 84 of the control element 18. The control surfaces 20, 46 of the control element 18 and / or the ramp element 76 of the control element 18 are arranged on the other free end 86 of the control element 18. The free end 84 of the control element 18 is arranged facing away from the other free end 86 of the control element 18. The control element 18 is connected to the support unit 28, in particular the support element 82, on the side facing away from the control surfaces 20, 46 of the control element 18 and / or the ramp element 76 of the control element 18.

[0051] The bearing unit 28 has at least one further bearing element 88 for the hand guard lever 12. The hand guard lever 12 is rotatably supported on the hand tool housing 26, in particular about the rotation axis 38 and / or the axial movement axis 74, by means of a further bearing element 88, in particular via a bearing sleeve 106 of the hand guard lever 12. The hand guard lever 12 is fastened to the hand tool housing 26 by means of a fastening element 108, preferably via the bearing sleeve 106. The fastening element 108 is configured as a screw. Alternatively, it is conceivable that the fastening element 108 is configured as a rivet or the like and / or the hand guard lever 12 is fastened to the hand tool housing 26 by means of a clamping connection, a latching connection or the like, preferably via the bearing sleeve 106. The hand guard lever 12 is fixed to the hand tool housing 26 in the axial direction, in particular along the movement axis 74, preferably along the rotation axis 38, by means of a further bearing element 88. The further bearing element 88 is configured integrally with at least a portion of the hand tool housing 26. Alternatively, it is also conceivable that the further bearing element 88 is fastened to the hand-held power tool housing 26 in an especially detachable manner by means of a screw connection, a latching connection, a clamping connection, a riveted connection or the like.

[0052] The support unit 28 predetermines at least one arrangement angle of the control element 18 on the support unit 28. The support unit 28, preferably the support element 82, allows the control element 18 to be mounted on the support unit 28 only in one or more angular positions relative to the support unit 28, in particular the support element 82. The support element 82 has a support contour 90, which is designed in particular to be complementary to a support connection contour 92 of the control element 18. The support contour 90 of the support element 82 allows the control element 18 to be mounted only in one or more angular positions relative to the support unit 28, in particular the support element 82. The support element 82, in particular the support contour 90, has one or more projections 94, one or more recesses 96, combinations thereof, etc.

[0053] The control unit 14 is configured to allow, starting from the intermediate position of the hand guard lever 12, a forward rotation and a rearward rotation of the hand guard lever 12 relative to the control element 18. The rearward rotation of the hand guard lever 12 is a rotation of the hand guard lever 12 in the direction opposite to the forward rotation of the hand guard lever 12. The rearward rotation of the hand guard lever 12 is a rotation of the hand guard lever 12 in the direction away from the tool receiving area 62. The rearward rotation of the hand guard lever 12 is a rotation of the hand guard lever 12 in the direction of the handle 54 and / or the further handle 56 (see also Figure 1 The rearward rotation direction 52 of the hand guard bar 12 is the rotation of the hand guard bar 12 around the rotation axis 38.

[0054] The control unit 14 has at least one spring element 30. The spring element 30 is designed as a helical spring. Alternatively, it is also conceivable that the spring element 30 is designed as a torsion spring, a rubber elastic element, etc. The control unit 14 has exactly one spring element 30, in particular as already described above. However, it is also conceivable as an alternative that the control unit 14 has a plurality of spring elements 30, in particular in order to load the control element 18 with a force in the direction of the hand guard 12.

[0055] The spring element 30 is provided for applying a force to the control element 18 in the direction of the hand guard lever 12. The spring element 30 is arranged between the control element 18 and the hand-held power tool housing 26 at least in one operating state. The spring element 30 abuts against the hand-held power tool housing 26, in particular with a free end 98 of the spring element 30. The spring element 30 abuts against the control element 18, preferably against a contact surface 102 of the control element 18, in particular with another free end 100 of the spring element 30. The free end 98 of the spring element 30 is arranged away from the other free end 100 of the spring element 30. The main extension plane of the contact surface 102 extends at least substantially perpendicular to the rotation axis 38 and / or the movement axis 74.

[0056] The movement of the control element 18 along the axial movement axis 74, in particular along the rotation axis 38, produces a compression or extension of the spring element 30. The extension and / or compression axis of the spring element 30, at least in one operating state, extends at least substantially parallel to the rotation axis 38 and / or the axial movement axis 74. In order to rotate the hand guard 12, an actuating force must be applied that overcomes the spring force that can be generated by the spring element 30.

[0057] The spring element 30 at least partially, preferably at least substantially completely, more preferably completely surrounds the control element 18 in at least one operating state, in particular at least when viewed in a direction extending parallel to the rotation axis 38 (see Figure 5 ). The spring element 30 at least partially, preferably at least substantially completely, particularly preferably completely surrounds the bearing element 82 and / or the further bearing element 88 in at least one operating state, in particular at least when viewed in a direction extending parallel to the axis of rotation 38, in particular the axis of movement 74. The spring element 30 completely surrounds the bearing sleeve 106 of the hand guard 12, in particular at least when viewed in a direction extending parallel to the axis of rotation 38, in particular the axis of movement 74.

[0058] After the hand guard 12 is rotated backwards from the intermediate position of the hand guard 12, the spring element 30 automatically moves the hand guard 12 into the intermediate position. The complementary control surfaces 20, 24, 42, 44, 46, 48 of the control element 18 and the further control element 22 are arranged so that the hand guard 12 can be automatically moved into the intermediate position by means of the spring element 30 after the hand guard 12 is rotated backwards from the intermediate position of the hand guard 12.

[0059] The control unit 14 has a stop element 32. The stop element 32 is configured to limit the backward rotation of the hand guard lever 12 from the middle position. The stop element 32 is configured to limit the backward rotation of the hand guard lever 12 triggered from the middle position by the hand guard lever 12 stopping on the stop element 32. Alternatively, it is also conceivable to limit the backward rotation of the hand guard lever 12 from the middle position of the hand guard lever 12 by the control element 18 stopping on the stop element 32. The outer wall 34 of the handheld power tool housing 26 has a stop element 32, which is configured to limit the backward rotation of the hand guard lever 12 from the middle position of the hand guard lever 12. The stop element 32 is configured as a stop edge. The hand guard lever 12 has a stop surface 58 complementary to the stop element 32.

[0060] The stop element 32 defines the stop position of the hand guard lever 12. The intermediate position is in particular different from the trigger position and / or the stop position. The intermediate position is arranged between the trigger position and the stop position. The intermediate position and / or the trigger position are the rest positions of the hand guard lever 12. In order to move the hand guard lever 12 from the rest position, preferably the trigger position or the intermediate position of the hand guard lever 12, an operating force must be applied to the hand guard lever 12. The rest position, in particular the trigger position and / or the intermediate position of the hand guard lever 12 is defined by the control unit 14, in particular the control element 18 and the complementary control surfaces 20, 24, 42, 44, 46, 48 of the further control element 22.

[0061] The handheld power tool 10 has at least one operating element 36, in particular a switch element, for triggering a handheld power tool function, in particular a safety function. The operating element 36 can be operated by rotating the hand guard lever 12 backward from a center position of the hand guard lever 12. The handheld power tool function can be, for example, an additional activation phase for starting the handheld power tool 10, a safety function, such as a trigger for a brake, an automatic system check of the handheld power tool 10, etc. When the hand guard lever 12 is rotated backward from the center position, the operating element 36 can be operated by the hand guard lever 12, for example, by a projection of the hand guard lever 12, etc.

[0062] The actuating element 36 can be actuated starting from a center position of the hand guard lever 12 by rotating the hand guard lever 12 backwards toward the stop element 32. It is conceivable that the actuating element 36 is arranged on the stop element 32 or is spaced apart from the stop element 32. The actuating element 36 is designed, for example, as a button, an actuating lever, a transmission element, etc.

[0063] At least the control element 18 is arranged at least in the vicinity of the rotation axis 38 of the hand guard 12. The control element 18 is arranged closed around the rotation axis 38. The control element 18 at least substantially completely, preferably completely surrounds the rotation axis 38, in particular at least when viewed in a direction extending parallel to the rotation axis 38.

[0064] Figure 6 The hand guard 12 is shown in a neutral position. In the neutral position, the control surface 24 of the further control element 22 abuts against the control surface 20 of the control element 18. The further control surface 42 of the further control element 22 abuts against the further control surface 46 of the control element 18. The ramp element 76 of the control element 18 is located stationary, especially in the neutral position, in a recess defined by the control surface 24 of the further control element 22 and the further control surface 42 of the further control element 22.

[0065] By rotating the hand guard 12 forwards about the rotation axis 38 starting from the middle position, the ramp element 76 of the control element 18 moves against one of the ramp elements 78 , 80 of the other control element 22 , and the control surface 20 of the control element 18 moves in particular against the control surface 24 of the other control element 22 , whereby the control element 18 moves in the axial direction relative to the hand guard 12 , preferably against the spring force that can be generated by the spring element 30 .

[0066] If the tip of the ramp element 76 exceeds the tip of the ramp element 78 by the forward rotation of the hand guard 12, in particular starting from the middle position, the hand guard 12 moves into the triggering position of the hand guard 12 (see Figure 7 ). In the trigger position, the control surface 20 of the control element 18 abuts against the additional control surface 48 of the other control element 22. In the trigger position, the other control surface 46 of the control element 18 abuts against the other additional control surface 44 of the other control element 22. The ramp element 76 of the control element 18 is located stationary in a recess defined by the additional control surface 48 of the other control element 22 and the other additional control surface 44 of the other control element 22, in particular in the trigger position.

[0067] By rotating the hand guard 12 backwards from the center position about the rotation axis 38, the ramp element 76 of the control element 18 moves against the other ramp element 80 of the ramp elements 78, 80 of the other control element 22, in particular, the other control surface 46 of the control element 18 moves against the other control surface 42 of the other control element 22, whereby in particular the control element 18 moves relative to the hand guard 12 in the axial direction, preferably against the spring force that can be generated by the spring element 30. When the hand guard 12 is rotated backwards from the center position about the rotation axis 38, the ramp element 76 of the control element 18 moves against the other ramp element 80 of the ramp elements 78, 80 of the other control element 22, in particular, the other control surface 46 of the control element 18 moves against the other control surface 42 of the other control element 22, until the hand guard 12 stops on the stop element 32. If the hand guard 12 stops on the stop element 32, the hand guard 12 is in the stop position (see Figure 8The stop position is different from the rest position of the hand guard lever 12. The control unit 14 is configured to automatically move the hand guard lever 12 from the stop position into the intermediate position by means of the spring element 30, in particular when the hand guard lever 12 is not acted upon by a corresponding counteracting actuating force, for example an actuating force caused by an operator or other loads.

[0068] The ramp element 78 of the further control element 22, which is in particular overridden in order to move the hand guard lever 12 from the intermediate position into the triggering position or vice versa, is smaller than the further ramp element 80 of the further control element 22. In particular, the ramp height and / or the ramp width of the ramp element 78 of the further control element 22 are smaller than the ramp height and / or the ramp width of the further ramp element 80 of the further control element 22.

Claims

1. A handheld power tool (10), in particular a chain saw, having a hand guard (12) and at least one mechanical control unit (14) for controlling the movement of the hand guard (12) of the handheld power tool (10), It is characterized in that The control unit (14) has at least one mechanical control element (18) which is configured to control the rotational movement of the hand guard (12) by means of an axial relative movement between the control element (18) and the hand guard (12).

2. The hand-held power tool (10) according to claim 1, It is characterized in that The control element (18) has at least one control surface (20) which is arranged for axial displacement.

3. The handheld power tool (10) according to claim 1 or 2, It is characterized in that The control unit (14) has at least one further mechanical control element (22), wherein the control element (18) and the further control element (22) have complementary control surfaces (20, 24) provided for axial displacement, wherein in particular the further control element (22) is connected to the hand guard (12) in a rotationally fixed manner.

4. The hand-held power tool (10) according to claim 1, Features A hand-held power tool housing (26) has at least one bearing unit (28) for bearing at least a part of the control unit (14), in particular for bearing an axially movable control element (18) in a rotationally fixed manner.

5. The hand-held power tool (10) according to claim 4, It is characterized in that The bearing unit (28) predetermines at least one arrangement angle of the control element (18) on the bearing unit (28).

6. The hand-held power tool (10) according to the preamble of claim 1, in particular according to any one of the preceding claims, It is characterized in that The control unit (14) is configured to allow, starting from a neutral position of the hand guard lever (12), a forward rotation and a backward rotation of the hand guard lever (12) relative to the control element (18).

7. The hand-held power tool (10) according to claim 1, It is characterized in that The control unit (14) has at least one spring element (30), in particular a helical spring, which is provided for applying a force to the control element (18) in the direction of the hand guard (12), wherein in particular the spring element (30) at least partially surrounds the control element (18) in at least one operating state.

8. The hand-held power tool (10) according to claim 6, It is characterized in that After the hand guard (12) has been rotated backwards from a center position of the hand guard (12), the spring element (30) automatically moves the hand guard (12) into the center position.

9. The hand-held power tool (10) according to claim 1, It is characterized in that The control unit (14) has a stop element (32) which is arranged to limit a backward rotation of the hand guard (12) from a center position of the hand guard (12), in particular by the hand guard (12) stopping on the stop element (32).

10. The hand-held power tool (10) according to claim 9, Features A hand-held power tool housing (26) is provided, wherein an outer wall (34) of the hand-held power tool housing (26) has a stop element (32).

11. The hand-held power tool (10) according to claim 1, Features At least one operating element (36), in particular a switch element, is provided for triggering a hand-held power tool function, in particular a safety function, which operating element can be operated by rotating the hand guard (12) backwards from a center position of the hand guard (12).

12. The hand-held power tool (10) according to claim 9 and 11, It is characterized in that The actuating element (36) can be actuated starting from a center position of the hand guard (12) by rotating the hand guard (12) backwards as far as a stop element (32).

13. The hand-held power tool (10) according to claim 1, It is characterized in that At least the control element (18) is arranged at least in the vicinity of a rotation axis (38) of the hand guard (12), in particular in a closed manner around the rotation axis (38).

14. A hand-held power tool device (40) for a hand-held power tool (10), in particular a chain saw, comprising at least one mechanical control unit (14) for controlling the movement of a hand guard (12) of the hand-held power tool (10). It is characterized in that The control unit (14) has at least one mechanical control element (18) which is designed to control a rotational movement of the hand guard (12) by means of an axial relative movement between the control element (18) and the hand guard (12), in particular a relative movement at least substantially along an axis of rotation (38) of the hand guard (12).

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