CN112912213A

CN112912213A - Operating unit

Info

Publication number: CN112912213A
Application number: CN201980069864.XA
Authority: CN
Inventors: A·凯利; T·孔奇克
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2018-10-22
Filing date: 2019-10-22
Publication date: 2021-06-04
Anticipated expiration: 2039-10-22
Also published as: DE102018217991A1; WO2020083870A1; CN112912213B

Abstract

The invention relates to a control unit for controlling a hand-held power tool, in particular a garden machine, having a drive unit, having a control element for controlling or adjusting the drive unit and a release element for releasing the control of the control element. It is proposed that the actuating force for actuating the release element is at least partially reduced as a function of the actuation of the release element, in particular as a function of the actuation of the release element from the rest state into the actuated state.

Description

Operating unit

Technical Field

The invention relates to a steering unit according to the preamble of claim 1.

Background

Hand-held power tools having an actuating element and a release element are known. In order to operate the hand-held power tool, the release element must be held pressed in such a way that the release element is acted upon by the actuating force and is held by the actuating force. In the case of such hand-held power tools, the actuating force is always constant, so that when actuating the release element, the actuating force must be maintained throughout the actuating process.

Disclosure of Invention

The invention is based on the object of improving the actuating unit with simple structural measures.

The object is achieved by a control unit for controlling a hand-held power tool, in particular a garden machine, having a drive unit, which has a control element for controlling or adjusting the drive unit and a release element for releasing the control of the control element.

It can be expedient if the actuating force for actuating the release element is at least partially reduced as a function of the actuation of the release element, in particular as a function of the actuation of the release element from the rest state into the actuated state.

In general, the release element is actuated with a defined force, for example, in order to comply with safety requirements for the actuating unit, whereby the hand-held power tool is to be prevented from being accidentally activated and possibly operating. Depending on the safety requirement, it may be necessary, for example, to load the release element with a force of, for example, 20Nm or more in order to release the actuating element. For the operator of a hand-held power tool, the 20Nm that is to be maintained for a long time in order to maintain the operation of the power tool may be exhausted: (

) And is not very comfortable.

By means of the actuating unit according to the invention, the force action on the release element can be limited and at the same time possible safety requirements for the hand-held power tool can also be met. The actuating unit can thereby be actuated particularly reliably in that a minimum actuating force required for actuating the release element is maintained and that, during or after actuation of the release element, a lower actuating force is required to hold the release element in the actuated state.

The hand-held power tool can also be designed as a hand-guided and/or hand-held power tool. The hand-held power tool can be configured as a garden machine, which is configured in particular as a lawn mower, a subsoiler, a snow sweeper, a hedge trimmer, a chain saw or the like.

In this context, a "drive unit" is to be understood to mean, in particular, a unit which is provided for generating at least one drive torque and for providing the at least one drive torque for transmission to an output unit, in particular an accessory tool. Advantageously, the hand-held power tool has a drive unit. Particularly advantageously, the drive unit has at least one electric motor. The drive unit can have a drive shaft. The drive unit can be designed as an electronically commutated motor or as a brush-commutated motor. The output unit can have a receptacle for receiving a tool, in particular an accessory tool, which is provided for transmitting a working movement to the workpiece to be machined.

In this context, a "control unit" is to be understood to mean, in particular, a unit which has at least one component which can be directly controlled by an operator and which is provided for influencing and/or changing a process and/or a state of a unit coupled to the control unit by means of a control and/or by means of an input variable. The actuating unit is provided in particular for enabling bidirectional actuation, in particular in order to be able to ensure that the actuating element is released after actuating the release element. The actuating unit, in particular the actuating element, can be provided for controlling or adjusting the drive unit directly, in particular by means of the actuating element, or indirectly, in particular by means of the electronics unit. An "actuating element" is to be understood to mean, in particular, an element which is provided for receiving an input variable of an operator during an actuation process and which is in particular directly contacted by the operator, wherein a touch on the actuating element and/or an actuating force applied to the actuating element is sensed and/or mechanically transmitted for actuating a unit. The operating element is preferably provided for activating or controlling and/or adjusting a drive unit and/or an electronics unit of the hand-held power tool, in particular of the hand-held power tool.

In particular, the actuating force can be applied to the release element by means of a hand, in particular a palm, of an operator, preferably in such a way that the release element is moved relative to the housing of the actuating unit.

The release element should preferably form a safety function, by means of which accidental operation of the hand-held power tool can be prevented. The release element should preferably be provided for releasing the actuating element. The release element can be provided for electrically and/or mechanically releasing the actuating element. The release element can be configured as a switching element. The release element can be configured as a pawl. The release element can be designed as a touch-sensitive actuating element, which is provided in particular for responding to a touch and/or approach by an operator, in particular to an approach by a body part of the operator, for example a finger, in particular within a distance of maximally 10cm, in particular maximally 3cm, advantageously maximally 1cm, preferably maximally 0.5 cm. Preferably, the actuating element reacts to the approach independently of a direct touch and/or pressure application, in particular a pressure application penetrating the touch surface. In particular, the touch surface is designed as a glass unit and/or as a plastic unit.

The release element is preferably provided for releasing the manoeuvrability of the actuating element, so that an operator of the hand-held power tool can manoeuvre the hand-held power tool, in particular in order to operate the hand-held power tool, when manoeuvring the actuating element.

The term "at least partially reduced" is to be understood in particular to mean that the force, in particular the actuating force, is reduced during actuation, in particular during actuation of the release element, so that in particular the actuating force is reduced as a function of the path traveled by the actuating element.

The dependent claims present further advantageous embodiments of the hand-held power tool according to the invention.

It can be advantageous if the actuating force can be changed as a function of the position of the actuating element and/or the position of the release element. For example, the actuating force for actuating the release element can be at least partially maximal. The actuating force can have a high point or be maximal approximately between the front and rear quarter of the actuating travel or position of the release element. In the rest position, the release element is in a rest state. In the operating state of the operating unit, the release element is operated such that the release element releases the operating element. The release element can be held in the actuating state in a particularly simple manner.

In this context, a variable actuating force is understood to mean an actuating force which varies as a function of an actuating state or an actuating path. For example, starting from a rest state to a manoeuvring state, the manoeuvring force can be increased. For example, the manipulation force can be reduced from the stationary state until the manipulation state. In particular, after the steering state is reached, the steering force can be reduced. Preferably, the actuating force is not constant depending on the actuating state or actuating travel.

It can be expedient if the actuating force is adjustable in such a way that the release element can be brought from the rest state into the actuating state at least in sections by means of a first actuating force and can be held in the actuating state by means of a second actuating force. In particular, the first actuating force is greater than the second actuating force, in particular at least 50% greater, preferably at least 100% greater, preferably at least 150% greater, particularly preferably at least 200% greater. The first and second actuating forces differ only in their magnitude and in particular represent a force effect on the release element, which serves to hold the release element in one state. The first actuating force can be greater than 10N, in particular greater than 15N, preferably greater than 20N, for example, and can have a tolerance of 1N, for example. The second actuating force can be, for example, less than 10N, in particular less than 8N, preferably less than 5N. The first actuating force may be a force threshold which, from a safety-technical point of view, must be exceeded by the operator in order to be able to actuate the hand-held power tool by means of the actuating element. The force threshold or actuating force can constitute a high point of the actuating force acting on the release element. This ensures that the operating unit or the hand-held power tool is not operated inadvertently.

It can also be expedient if the actuating unit has a resistance element which is provided to ensure that the release element is acted upon by the actuating force, in particular the first actuating force, when the release element is actuated. The resistance element can be provided for setting an actuating force acting on the release element, in particular for placing the release element into an actuating state and for releasing the actuating element. The resistance element can generate a counter force or a counter force which counteracts the actuating force/the actuating force acting on the release element. The actuating force can be set by means of the resistance element such that, when the release element is actuated, a force threshold or the actuating force/the first actuating force is reached in order to bring the release element into an actuating state in which actuation of the actuating element is released. A "resistance element" is to be understood to mean, in particular, an element which has at least one extent which can be changed elastically by at least 10%, in particular by at least 20%, preferably by at least 30% and particularly advantageously by at least 50% in the normal operating state, and which, in particular, causes a reaction force which counteracts the change and which is associated with and preferably proportional to the change in the extent. The resistance element can be designed or arranged in such a way that the release element is brought into the actuation state when the force acting on the release element reaches or exceeds a force threshold value or an actuation force/first actuation force. Alternatively or additionally, the resistance element can have or consist of a latching element. The detent element can be designed in such a way that the release element can be acted upon by the first actuating force in order to overcome the detent position or in order to transition from the rest state into the actuating state.

In addition, it can be expedient for the resistance element to be designed as a bending resistance element or as a tensile resistance element or as a compressive resistance element. Thereby, the safety function can be provided in a simple structure.

Furthermore, it can be expedient if the release element and/or the actuating element are mounted so as to be movable, in particular so as to be rotatable. The release element can be mounted so as to be rotatable about a release rotation axis. The actuating element can be mounted so as to be rotatable about an actuating axis of rotation. The release rotational axis and the actuation rotational axis can be arranged parallel to one another. The release axis of rotation and the actuation axis of rotation can be arranged on sides of the actuation unit facing away from each other. The release element and the actuating element can be mounted so as to be movable in the same direction or in the clockwise direction or counter to the clockwise direction, in particular in order to be brought from a rest state into an actuating state. In this way, the release element or the actuating element can be actuated particularly simply and intuitively.

In addition, it can be expedient if the release element is mounted so as to be rotatable through a small angular range relative to the actuating element. The angular range of the release element can be in the range of up to 15 °, in particular up to 10 °, preferably up to 6 °. The angular range of the actuating element can lie in a range of more than 5 °, in particular more than 10 °, preferably more than 15 °. Handling of the operating unit can thereby be improved.

In addition, it can be expedient if the operating unit has a guide unit which is provided for guiding the actuating element relative to the release element. In particular, the release element is mounted so as to be movable relative to the actuating element. In particular, the actuating element is guided on the release element. The actuating element can be guided in accordance with the release element. The release element can exert a constraining force on the actuating element at least in the actuating state in order to predetermine a movement possibility of the actuating element. The guiding unit can be provided for inhibiting the actuation of the actuating element in the rest state of the release element.

It is proposed that the guide unit has a first guide element assigned to the release element and has a second guide element assigned to the actuating element, wherein the second guide element is mounted so as to be guidable in or on the first guide element. Preferably, the first guide element is configured as a guide groove. Preferably, the second guide element is configured as a guide projection and in particular as a guide pin. The second guide element can be guided in the first guide element. The first guide element can be formed integrally with the release element. The second guide element can be formed integrally with the actuating element. In this way, the release element and/or the actuating element can be held in the actuating state in a particularly simple manner.

It is furthermore proposed that the release element has a first guide contour and a second guide contour, wherein the second guide contour is arranged at least substantially transversely to the first guide contour. The second guide profile can be curved. The second guide contour can have a contour radius which is substantially comparable to a movement radius of the second guide element when the actuating element is actuated in at least one state. It is further proposed that the actuating element holds the release element in the actuating state of the actuating element, in particular by means of a guide unit in the actuating state of the release element. Furthermore, it is proposed that the actuating element in the actuating state of the actuating element, in particular by means of the guide unit, restricts the movement of the release element in the actuating state. This reduces the burden on the operator of the hand-held power tool, in that the release element is essentially held in the actuated state.

It can be expedient if the release element and/or the actuating element has a return spring element which is provided for bringing the release element and/or the actuating element from the actuating state into the rest state. The return spring element can be designed as a helical torsion spring. The restoring spring element can be arranged on and in particular surrounds the release axis of rotation or the actuating axis of rotation. Thereby, a reset can be achieved in a particularly compact manner.

In addition, it can be expedient if the actuating unit has a rotary element which is coupled to the resistance element and is provided for tensioning the resistance element in the first state and for unloading it in the second state by means of a rotation of the rotary element. The rotating element can be provided for pressing or compressing the resistance element against the release element in the operating state of the release element. The rotary element can have a detent which is provided for blocking a rotary movement in one direction and releasing the rotary movement in the opposite direction. The latching means can be designed in such a way that, when an actuating force/first actuating force acts on the release element, the detent position of the rotary element is overcome in order to set the rotary element in rotation in particular. The release element transmits the actuating force to the resistance element, whereby in particular the resistance element is tensioned against the rotary element or a stop position of the rotary element in such a way that the stop position is overcome, whereby in particular the release element passes from the rest state into the actuating state. A "latching" is to be understood in particular to mean a device which, in at least one operating state, generates a force which counteracts a movement by a pressure acting on the uneven surface. This allows a particularly simple setting of the actuating force of the release element.

It is proposed that the rotary element is designed such that it twists when a force threshold acting in the direction of rotation is exceeded. The rotating element can be configured as a rotating wheel element. The rotary element is rotatably mounted about a rotational axis. In particular, the resistance element is coupled eccentrically to the rotary element. In this way, the first actuating force can be limited particularly reliably when actuating the release element.

Furthermore, it is proposed that the actuating element be arranged on a side of the handle facing away from the release element. This enables a particularly advantageous one-handed operation.

The invention further relates to a hand-held power tool, in particular a garden machine, having a control unit for controlling a drive unit of the hand-held power tool, in particular of the hand-held power tool.

Drawings

Further advantages result from the following description of the figures. Embodiments of the invention are illustrated in the drawings. The figures, description and claims include a number of combinations of features. The person skilled in the art is also well-suited to observe the features individually and combine them into meaningful other combinations. Here:

fig 1 shows components of an exemplary hand-held power tool of the prior art,

fig. 2 shows three sectional views of a handling unit according to the invention of a hand-held power tool according to the invention,

fig. 3 shows a perspective sectional view of the handling unit according to the invention of the hand-held power tool according to the invention from fig. 2,

fig. 4 and 5 show three sectional views of two further embodiments of a hand-held power tool according to the invention, respectively, and

fig. 6 shows a force diagram of the actuating unit.

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

Detailed Description

The drawing relates to a hand-held power tool 11, which is designed as a garden machine, for example a lawn trimmer or a hedge trimmer, having a drive unit 13, which is designed as an electric motor, for driving the hand-held power tool 11, and a control unit 19 for controlling the hand-held power tool 11. The drive unit 13 is provided as a receptacle for transmitting a drive movement to the output unit 15, which receptacle can be coupled or already coupled with an accessory tool 17.

The hand-held power tool 11 is designed as a hand-guided and/or hand-held power tool 11. Alternatively or additionally, the hand-held power tool 11 can be configured as a lawn mower, a subsoiler, a snow blower, a hedge trimmer, a chain saw or the like.

The actuating unit 19 has an actuating element 21, which is designed as an actuating lever 21, for controlling or adjusting the drive unit 13 and a release element 23, which is designed as a release lever 23, for releasing the actuation of the actuating element 21. For actuating the release lever 23, a variable actuating force 27 is provided. The actuating force 27 varies, in particular decreases, as a function of the actuating state or actuating travel 28. The release lever 23 can comprise a plurality of operating states, which the release lever 23 assumes as soon as the release lever 23 is brought from a rest state into an operating state. In this case, the actuating force 27 can be increased when actuating the release element 23 and can exceed the high point 25 (fig. 6). Subsequently, the actuating force 27 can be reduced after the high point 25 has been passed or when the actuating state is reached, in order to easily maintain the release lever 23 in the actuating state.

Fig. 6 shows a first actuation force curve 101 of the release lever 23, in which the actuation force 27 rises and reaches the high point 25 in the movement path 28 or in the rotation angle between 2 ° and 3 °, for example 2.5 °, and then falls again, in order to enable a more comfortable operation. The actuating force exceeds a force threshold of 20N and reaches 25N at 2.5 ° in this example, and decreases to approximately 5N at the end of the actuating state or at 5 ° when the release element is stopped.

The actuating unit 19 is basically designed as an actuating handle 19 and is provided for enabling a bidirectional actuation in order to be able to ensure that the actuating lever 21 is released after actuating the release lever 23. The operating lever 21 is provided for controlling or regulating the drive unit 13 directly or by means of the operating lever 21. The release lever 23 forms a safety function that is intended to prevent accidental operation of the hand-held power tool 11. The release lever 23 is provided for releasing the operating lever 21. A release lever 23 is provided for mechanically releasing the operating lever 21. The release lever 23 is configured as a switching element. The release lever 23 is configured as a pawl. The release lever 23 is provided for releasing the manoeuvrability of the operating lever 21 so that the operator of the hand-held power tool 11 operates the drive unit 13 when operating the operating lever 21.

The actuating force 27 can be varied depending on the position of the release lever 23. Approximately between the front and rear quarter of the actuation travel 28 or position of the release lever 23, the actuation force 27 has a high point 25. The release lever 23 is in a rest state in a rest position and in an operating state when the release lever 23 is in an operating position, in which the release lever 23 is operated such that the release lever 23 releases the operating lever 21.

The actuating force 27 is set such that the release lever 23 can be moved from a rest state into an actuating state by means of a first actuating force 27 and can be held in the actuating state by means of a second actuating force 27, the first actuating force 27 being greater than the second actuating force 27. The first operating force 27 is greater than 20N. The second operating force 27 is less than 10N. The first actuating force 27 is a force threshold which, from a safety-technical point of view, must be exceeded by the operator in order to be able to actuate the hand-held power tool 11 by means of the operating lever 21.

Actuating handle 19 has a resistance element 31, which is embodied as a spring element 31 and is provided to ensure that release lever 23 is loaded with at least first actuating force 27 when actuating release lever 23. The spring element 31 is provided for adjusting the actuating force 27 acting on the release lever 23 in order to bring the release lever 23 into the actuating state and to release the actuating lever 21. The spring element 31 forms a counter force or a counter force which counteracts the actuating force 27 acting on the release lever 23. The actuating force 27 is set by means of the spring element 31 such that, when the release lever 23 is actuated, a force threshold value or a first actuating force 27 is reached in order to bring the release lever 23 into an actuating state in which actuation of the actuating lever 21 is released. The spring element 31 can be designed or arranged in such a way that the release lever 23 is brought into the actuating state when the force acting on the release lever 23 reaches or exceeds the force threshold value or the first actuating force 27.

The spring element 31 is designed as a detent element (fig. 3). The latching element is designed in such a way that the release lever 23 is acted upon by the first actuating force 27 in order to overcome the detent position or to change from the rest state into the actuating state.

Furthermore, the spring element 31 is designed as a bending spring element 31 (fig. 2, 4) or as an extension spring element or a compression spring element 31 (fig. 5).

In fig. 2, the bending spring element 31 is prestressed relative to the release element 23. The curved spring element 31 is provided for acting against a latching projection of the release element 23 in the rest state and allows an actuation or actuation state as a function of an actuating force acting on the release element 23. When the release element 23 is loaded with the first actuating force, it is tensioned against the latching projection in such a way that the release element 23 is deformed so as to pass over the latching projection, see the middle in fig. 2 and the left in fig. 2. The detent projection can be designed asymmetrically, so that a rearward movement, i.e. from the actuating state to the rest state, requires a smaller force on the release element to pass the detent projection than when moving from the rest state to the actuating state.

In fig. 4, the curved spring element 31 is connected on the one hand to the release element 23 and on the other hand to the housing of the actuating unit 19, so that the actuating force acting on the release element 23 for actuating the actuating unit 19 is dependent on the elastic deformability and/or the arrangement in the actuating unit 19. The bending spring element 31 is provided for providing the actuating force 27 by means of the bending stress of the bending spring element 31.

Fig. 2, 4 and 5 show the actuating unit 19, the actuating unit in the left drawing being in a stationary state and the actuating unit 19 in the right drawing being in an actuating state.

The release lever 23 and the operating lever 21 are supported in a rotationally movable manner. The release lever 23 is mounted so as to be rotatable about a release rotation axis 33 and the actuating lever 21 is mounted so as to be rotatable about an actuating rotation axis 35. The release rotation axis 33 and the manipulation rotation axis 35 are arranged parallel to each other. The release axis of rotation 33 and the actuation axis of rotation 35 are arranged on sides of the actuation handle 19 facing away from each other. The release lever 23 and the actuating lever 21 are mounted so as to be movable in the same direction and in the clockwise direction in order to be brought from a rest state into an actuating state.

The release lever 23 is supported so as to be rotatable through a small angular range relative to the operating lever 21. The angular extent of the release lever 23 can be in the range of up to 15 °. The angular range is the distance covered by the release lever 23, for example.

The actuating unit 19 has a guide unit 37 which is provided for guiding the actuating lever 21 relative to the release lever 23. The release lever 23 is mounted so as to be movable relative to the actuating lever 21 and is guided in accordance with the actuating lever 21. The release lever 23 exerts a constraining force on the actuating lever 21 at least in the actuating state in order to predetermine the movement possibility of the actuating lever 21. The guide unit 37 is provided for prohibiting manipulation of the operating lever 21 in the rest state of the release lever 23.

The guide unit 37 has a first guide element, which is assigned to the release lever 23 and is designed as a guide groove 39, and a second guide element, which is assigned to the actuating lever 21 and is designed as a guide projection 41. The guide projection 41 is supported so as to be guided in or on the guide groove 39. The guide groove 39 is formed integrally with the release lever 23 and the guide projection 41 is formed integrally with the actuating lever 21.

The guide groove 39 has a first guide contour 43 and a second guide contour 45, wherein the second guide contour 45 is arranged at least substantially transversely to the first guide contour 43. The second guide profile 45 is curved. The second guide contour 45 essentially has a contour radius corresponding to the radius of movement of the guide projection 41 during actuation of the actuating lever 21 in at least one actuating state. In the operating state of the actuating lever 21, the actuating lever 21 holds the release lever 23 at least in a force-locking manner by means of the guide unit 37, the pretensioned release lever 23 or the actuating lever 21, and thus the movement of the release lever 23 can be limited.

The release lever 23 and the actuating lever 21 each have a

return spring element

49, 51, which is provided for prestressing the release lever 23 and the actuating lever 21 in the actuating state and for bringing them from the actuating state into the rest state. The

return spring elements

49, 51 are each designed as a leg spring and are arranged on and enclose the release axis of rotation 33 or the actuating axis of rotation 35. The restoring spring element 49 can be provided, for example, for at least partially loading the release element with a second actuating force or a corresponding counter force, which is in particular less than 10N, preferably approximately 5N. The resistance element 31 and/or the return spring element 49 can be provided, for example, for loading the release element at least partially with a second actuating force or a corresponding counter force such that in the actuating state a second actuating force is exerted on the release element, which is in particular less than 10N, preferably approximately 5N.

The return spring element 51 is provided to exert a return force on the actuating lever 21 in such a way that the actuating lever 21 is brought from the actuating state into the rest state. The guide unit 37 is configured such that the actuating lever 21 is moved from the actuating position into the resting position.

The actuating handle 19 has a rotary element 53 which is coupled to the tension-compression spring element 31 and which is provided for tensioning the spring element 31 in a first state and for unloading by means of a rotation of the resistance element 31 in a second state. The rotary element 53 is provided for pressing or compressing the spring element 31 against the release lever 23 in the operating state of the release lever 23. The rotary element 53 has a latching portion which is provided for substantially blocking the rotary movement 71 in one direction and in particular for releasing it in the opposite direction. The latching means is designed such that, when an actuating force/the first actuating force 27 acts on the release lever 23, the first or stop position of the rotary element 53 is overcome in order to put the rotary element 53 into rotation, see fig. 5 to the right. Thereby, the compression spring element 31 can be unloaded. The latch forms a rotary latch. The rotary element 53 is configured as a rotary latch. The release lever 23 transmits the actuating force 27 to the spring element 31, as a result of which the spring element 31 can be tensioned against the rotary element 53 or the detent position of the rotary element 53 in such a way that the first state or detent position is overcome, as a result of which the release lever 23 is transferred from the rest state into the actuating state by means of the rotary motion 71.

The rotary element 53 is designed in such a way that the rotary element 53 is twisted when a force threshold acting in the direction of rotation is exceeded. The rotating member 53 is configured as a rotating wheel member. The rotary member 53 is supported rotatably about a rotation axis. The spring element 31 is eccentrically coupled to the rotational element 53.

The operating lever 21 is arranged on the side of the handle facing away from the release lever 23.

Claims

1. Handling unit for handling a hand-held power tool (11) having a drive unit (13), in particular a garden machine, having a handling element (21) for controlling or adjusting the drive unit (13) and a release element (23) for releasing the handling of the handling element (21), characterized in that a handling force (27) for handling the release element (23) is at least partially reduced as a function of the handling of the release element (23), in particular as a function of the handling of the release element from a rest state to a handling state.

2. The actuating unit according to claim 1, characterized in that the actuating force (27) can be varied as a function of the position of the actuating element (21) and/or the position of the release element (23).

3. Operating unit according to one of the preceding claims, characterized in that the operating force (27) can be set such that the release element (23) can be brought from a rest state into an operating state at least in sections by means of a first operating force (27) and the release element (23) can be held in the operating state by means of a second operating force (27), wherein the first operating force (27) is greater than the second operating force (27).

4. Handling unit according to any of the preceding claims, where the handling unit (19) has a resistance element (31) which is arranged for ensuring that the release element (23) is loaded with a handling force/in particular a first handling force (27) when handling the release element (23).

5. Steering unit according to any one of the preceding claims, characterized in that the resistance element (31) is configured as a bending spring element (31) or as an extension spring element or as a compression spring element (31).

6. Operating unit according to one of the preceding claims, characterized in that the release element (23) and/or the operating element (21) are mounted movably, in particular rotatably.

7. Handling unit according to any of the preceding claims, where the release element (23) is supported in a manner rotatable relative to the handling element (21) over a small angular range.

8. Handling unit according to any of the preceding claims, wherein the handling unit (19) has a guiding unit (37) arranged for guiding the handling element (21) with respect to the release element (23).

9. The actuating unit according to one of the preceding claims, characterized in that the guide unit (37) has a first guide element (39) assigned to the release element (23) and has a second guide element (41) assigned to the actuating element (21), wherein the second guide element is mounted so as to be guidable in or on the first guide element.

10. Handling unit according to any of the preceding claims, wherein the release element (23) has a first guide profile (43) and a second guide profile (45), wherein the second guide profile (45) is arranged at least substantially transversely to the first guide profile (43).

11. Operating unit according to one of the preceding claims, characterized in that the operating element (21) holds the release element (23) in the operating state of the release element (23) or restricts the movement of the release element (23) in the operating state of the operating element (21).

12. Operating unit according to one of the preceding claims, characterized in that the release element (23) and/or the operating element (21) have a return spring element (49, 51) which is provided for bringing the release element (23) and/or the operating element (21) from an operating state into a rest state.

13. Handling unit according to any of the preceding claims, where the handling unit (19) has a rotating element (53) which is coupled with the resistance element (31) and which is arranged for tensioning the resistance element (31) in a first state and unloading by means of rotation of the rotating element (53) in a second state.

14. Handling unit according to one of the preceding claims, where the rotating element (53) is configured such that the rotating element (53) twists when a force threshold acting in the direction of rotation is exceeded.

15. Handling unit according to any of the preceding claims, where the handling element (21) is arranged on the side of the handle facing away from the release element (23).

16. Hand-held power tool, in particular a garden machine, according to any of the preceding claims, having a manipulation unit (19) for manipulating a hand-held power tool (11), in particular a drive unit (13) of the hand-held power tool (11).