Machine tool switching device

Abstract

The present invention provides a machine tool switching device, particularly for a pushable gardening implement, for electronically controlling at least one electric drive unit (12) of at least one machine tool. The machine tool switching device has at least one mechanical operating unit (16; 16') and at least one electronic device unit (18) designed to output at least one signal, particularly at least one control signal, based on the operation performed via the operating unit (16; 16'). It is proposed that the machine tool switching device includes at least one transmission unit (20; 20') operatively connected to the operating unit (16; 16'), the transmission unit being configured, particularly mechanically, to adjust the ratio between the operating displacement and the switching displacement of the operating unit (16; 16').

Description

[0001] This application is a divisional application of the invention patent application with application number 202080024849.6, application date March 24, 2020, and invention title "Machine Tool Switch Device". Technical Field

[0002] This invention relates to a machine tool switch, and more particularly to a machine tool switch for pushable gardening implements. Background Technology

[0003] A machine tool switching device, particularly for a pushable gardening implement, has been proposed for electronically controlling at least one electric drive unit of at least one machine tool. The machine tool switching device has at least one mechanical operating unit and at least one electronic device unit, the electronic device unit being designed to output at least one signal, particularly at least one control signal, according to the operation performed by the operating unit. Summary of the Invention

[0004] The present invention relates to a machine tool switching device, particularly a machine tool switching device for maneuverable gardening implements, for electronically controlling at least one electrically driven unit of at least one machine tool. The machine tool switching device has at least one mechanical operating unit and at least one electronic unit. The electronic unit is designed to output at least one signal, particularly at least one control signal, based on the operation performed via the operating unit.

[0005] It is proposed that the machine tool switching device includes at least one transmission unit operatively connected to the operating unit, the transmission unit being configured, in particular, to mechanically adjust the ratio between the operating displacement of the operating unit and the switching displacement of the operating unit.

[0006] The machine tool is preferably constructed as a modified machine tool. The machine tool particularly has at least one electric drive unit, including an electric motor, which replaces at least one original drive unit with an internal combustion engine. The machine tool is preferably constructed as a pushable gardening implement, particularly a lawnmower. The machine tool can also be constructed as a motorized hedge trimmer, a high-branch trimmer, a chainsaw, a machine tool different from gardening implements, particularly a handheld machine tool, exemplarily constructed as a jigsaw, circular saw, electric drill, etc., or as other machine tools that are deemed meaningful by those skilled in the art. The machine tool's switching device is preferably designed for electronically controlling at least one electric drive unit of the machine tool, which is configured to drive at least one processing unit of the machine tool, such as a mowing mechanism, saw chain, shearing blade, etc. Alternatively or additionally, the machine tool's switching device can be designed for electronically controlling at least one additional electric drive unit of the machine tool, which is configured to drive at least one forward unit of the machine tool, such as the drive wheel of a machine tool constructed as a lawnmower. "Configured" should be understood in particular as specially equipped and / or specially designed. “Design” should be understood in particular as specifically programmed and / or specifically planned. “An object is set up or designed for a specific function” should be understood in particular as: the object implements and / or performs that specific function in at least one application and / or runtime state.

[0007] The machine tool switch, especially the housing unit of the machine tool switch, is preferably constructed as a box, case, etc. Preferably, the machine tool switch, especially the housing unit, can be fastened to the machine tool by the machine tool or the user of the machine tool switch. Preferably, the machine tool switch, especially the housing unit, can be fastened to the machine tool without tools. The machine tool preferably has at least one operating element, such as an operating lever, operating rod, operating switch, etc., which is previously configured to operate a drive unit with an internal combustion engine originally present in the machine tool. Preferably, the operating element has at least two different positions, and the operating element can move a certain displacement distance between the at least two different positions, the movement being, for example, moving, swinging, etc. Preferably, the operating unit, especially at least one operating element of the operating unit, can be coupled to the operating element. The operating element is preferably constructed as an operating cable, operating wire, etc. Preferably, the operating element coupled to the operating element, especially the pulling operating element, is operated according to the operation of the machine tool's operating element. Preferably, the operating element is operatively connected to at least one other element of the operating unit, especially a sliding element, which is particularly configured to operate the electronic unit. Alternatively, it is conceivable that the control element is configured to control the electronic device unit. "Electronic device unit" should be understood in particular as a unit having at least one control electronics. "Control electronics" should be understood in particular as a unit having a processor unit, a storage unit, and a running program stored in that storage unit.

[0008] The electronic device unit preferably has at least one switching element, such as a microswitch, potentiometer, relay, etc. Preferably, the operating unit, in particular a sliding element, is configured to operate the switching element of the electronic device unit according to the operation of the operating element. Exemplarily, it is conceivable that the operating element, in particular a sliding element, is moved according to the operation of the operating element, and the sliding element operates the switching element of the electronic device unit according to the movement. Preferably, the switching element, in particular a switching element configured as a microswitch, has at least two switching states, wherein a signal for stopping activation of the electric drive unit is output in a first switching state and a signal for activating the electric drive unit is output in a second switching state. Alternatively, it is conceivable that the switching element, in particular a switching element configured as a potentiometer, has multiple switching states, in particular continuously changing switching states, wherein, for example, different signals for adjusting to different speeds of the electric drive unit are output according to different switching states. The electronic device unit is particularly capable of having multiple switching elements, particularly corresponding to the number of operating units of the machine tool switching device. Preferably, the electronic device unit has at least one circuit board on which the at least one switching element is arranged. Preferably, the electronic device unit includes at least one signal line element, particularly a cable, which is specifically capable of being electrically connected to the electric drive unit. Preferably, the electronic device unit is designed to output signals to the electric drive unit via the signal line element.

[0009] Preferably, the machine tool switching device can have multiple transmission units, the number of which corresponds particularly to the number of operating units. "Operating displacement of the operating unit" should be understood in particular as the maximum displacement distance traveled by the operating unit, especially the operating element of the operating unit, according to the operation of the operating element. In particular, the operating displacement of the operating unit depends on the displacement distance between at least two switching states of the operating element. In particular, the operating displacement of the operating units on different machines tools, especially those with different displacement distances between at least two switching states of the operating element, can be different. "Switching displacement of the operating unit" should be understood in particular as the maximum displacement distance traveled by the operating unit, especially the sliding element of the operating unit, between at least two switching states of the electronic unit. Preferably, the transmission unit is configured to pre-define at least substantially constant switching displacement, independent of the operating displacement of the operating unit, especially independent of different operating elements on different machines tools. Preferably, the transmission unit is constructed as a mechanical transmission unit, which in particular has mechanical elements for adjusting the ratio between the operating displacement and the switching displacement. In particular, the transmission unit has at least one pressure and / or tension element, preferably multiple pressure and / or tension elements, which are operatively connected to the operating unit, especially the operating element and / or sliding element. The at least one pressure and / or tension element, especially a spring, pressure cylinder, etc., is particularly configured to load the operating element and / or sliding element with pressure and / or tension. Alternatively or additionally, it is conceivable that the mechanical transmission unit has gears, rope traction systems, etc., for adjusting the ratio between the operating displacement and the switching displacement. Further alternatively, it is conceivable that the transmission unit is constructed as at least partially electric, especially electromechanical, transmission unit, which in particular has at least one servo drive for adjusting the ratio between the operating displacement and the switching displacement; constructed as a hydraulic transmission unit, which in particular has at least one hydraulic cylinder for adjusting the ratio between the operating displacement and the switching displacement; or constructed as a pneumatic transmission unit, which in particular has at least one pneumatic cylinder for adjusting the ratio between the operating displacement and the switching displacement.

[0010] According to the present invention, the configuration of the machine tool switching device allows for an advantageous realization of the ratio between the operating displacement and the switching displacement of the operating unit. Advantageously, a compactly constructed machine tool switching device that is easy to install can be provided. Advantageously, a machine tool switching device can be provided that can be used with a variety of different machine tools, which have different operating elements and / or different numbers of electric drive units, particularly having different displacement distances between at least two switching states of the operating element.

[0011] Furthermore, it is proposed that the transmission unit is configured to provide a switching displacement of the operating unit, particularly up to the switching point of the electronic device unit, shorter than the operating displacement of the operating unit. "Switching point of the electronic device unit" should be understood in particular as the endpoint of the switching displacement, at which the switching element of the electronic device unit, particularly having two switching states, switches from a first switching state to a second switching state. Depending on the machine tool used with the machine tool switching device, and particularly on the operating element of the machine tool, the operating displacement of the operating unit can be, for example, at least 5 cm, at least 10 cm, at least 20 cm, or at least 30 cm long. In particular, the transmission unit is configured to provide a switching displacement of the operating unit of up to 2 cm, preferably up to 1.5 cm, particularly preferably up to 1 cm, and completely particularly preferably up to 0.5 cm. Advantageously, a predetermined switching displacement can be given. Advantageously, a compact machine tool switching device can be provided.

[0012] Furthermore, it is proposed that the transmission unit includes at least one pressure and / or tension element configured to adjust the switching displacement of the operating unit and / or to return the operating unit to an unoperated initial position. Preferably, the at least one pressure and / or tension element is constructed as a spring, especially a compression spring or a tension spring. The at least one pressure and / or tension element is preferably constructed as a helical spring. The at least one pressure and / or tension element is preferably constructed as a metal spring. Alternatively, it is conceivable that the at least one pressure and / or tension element is constructed as a rubber spring, an air spring, a gas pressure spring, or other pressure and / or tension element that is considered meaningful by those skilled in the art. The at least one pressure and / or tension element is preferably operatively connected to the operating unit, especially the operating element and / or a sliding element, especially mechanically coupled. The transmission unit preferably has at least two pressure and / or tension elements, wherein at least one of the pressure and / or tension elements is mechanically coupled to the operating element and at least one other pressure and / or tension element is mechanically coupled to the sliding element. In particular, the switching displacement depends on the parameters of the at least one compression and / or tension element, especially the pressure and / or tension, such as spring force. Length, etc. In particular, the switch displacement can be adjusted by adapting the parameters of the at least one pressure and / or pull element, especially pressure and / or tension, such as spring force, length, etc. The at least one pressure and / or pull element is preferably configured to apply a restoring force to the operating unit, especially the operating element and / or sliding element, which is operated, especially by an operating element. The at least one pressure and / or pull element is particularly configured to return the operating unit, especially the operating element and / or sliding element, from the operated switch position to the unoperated initial position, especially by pulling or pressing it to the unoperated initial position, according to the release of the operation. Advantageously, the adjustability of the switch displacement can be achieved.

[0013] Furthermore, the transmission unit comprises at least two compression and / or tension elements, particularly the aforementioned compression and / or tension elements, wherein at least one first compression and / or tension element is configured as a tension spring and at least one second compression and / or tension element is configured as a compression spring. Preferably, the first compression and / or tension element is directly operatively connected to the sliding element, particularly mechanically coupled to the sliding element. Preferably, the second compression and / or tension element is directly operatively connected to the actuating element, particularly mechanically coupled to the actuating element. Preferably, the first and second compression and / or tension elements are arranged, particularly within the housing unit, such that the first compression and / or tension element applies force, particularly tension, to the actuating unit, particularly the sliding element, and the second compression and / or tension element applies force, particularly compression, to the actuating unit, particularly the actuating element, in a further direction of force, extending at least substantially parallel to each other. "Substantially parallel" should be understood in particular as an orientation of a direction relative to a reference direction, particularly in a plane, wherein this direction has a deviation of particularly less than 8°, advantageously less than 5°, and particularly advantageously less than 2° relative to the reference direction. Preferably, the force direction and the other force direction point in the opposite direction to the operation direction, and the operation unit moves in the operation direction according to the operation, especially the operation performed via the operating element. In particular, the force direction and the other force direction extend at least substantially parallel to the operation direction. In particular, the second pressure and / or pull element is provided for applying pressure acting in the opposite direction to the operation element. In particular, the first pressure and / or pull element is provided for applying pull force acting in the opposite direction to the sliding element. The first pressure and / or pull element is preferably fastened to a wall of the sliding element and the housing unit. The first pressure and / or pull element is particularly provided for pulling the sliding element in a direction toward the wall. The second pressure and / or pull element is preferably supported on the sliding element. The second pressure and / or pull element is particularly provided for pressing the operation element against the sliding element, especially in a direction toward the wall. Preferably, by adapting the parameters of the pressure and / or pull elements, especially the pressure and / or pull, such as spring force, length, arrangement relative to each other, etc., the ratio between the operation displacement and the switching displacement can be adjusted. Advantageously, it is possible to provide a flexible and adaptable transmission unit for adjusting the ratio between the operating displacement and the switching displacement.

[0014] Furthermore, it is proposed that the operating unit includes at least one sliding element, particularly the aforementioned sliding element, operatively connected to the transmission unit for operating at least one switching element of the electronic device unit, particularly a microswitch. The geometry of the sliding element affects the switching displacement of the operating unit, particularly up to the switching point of the electronic device unit, relative to the maximum adjustable displacement of the sliding element. "Maximum adjustable displacement of the sliding element" should be understood in particular as the maximum displacement distance the sliding element can move, particularly depending on the spatial conditions within the housing unit. Specifically, the maximum adjustable displacement of the sliding element is independent of the operating displacement of the operating unit. In particular, the sliding element has the same maximum adjustable displacement independent of the machine tool and the machine tool switching device used with it. The sliding element is preferably configured to operate the switching element of the electronic device unit. The sliding element is particularly configured to move the switching tongue of the switching element, particularly laterally to the direction of the force and the other force direction. Preferably, the movement of the switching tongue closes at least one contact of the switching element, particularly configured as a microswitch, and / or changes the resistance value of the switching element, particularly configured as a potentiometer. The sliding element preferably has at least one actuating protrusion configured to actuate the switching element, particularly to move the switching tongue of the switching element. The switching displacement length, particularly relative to the maximum adjustment displacement of the sliding element, up to the switching point, depends especially on the geometry of the sliding element, particularly the actuating protrusion. It is conceivable, exemplarily, that a sliding element, particularly an actuating protrusion, having a large maximum extension length transverse to the force direction and the other force direction, actuates the switching element after a shorter switching displacement, particularly relative to the maximum adjustment displacement of the sliding element, compared to another sliding element, particularly another actuating protrusion, having a small maximum extension length transverse to the force direction and the other force direction. It is exemplarily conceivable, exemplarily, that a sliding element with an actuating protrusion positioned further forward than the other sliding element actuates the switching element after a shorter switching displacement, particularly relative to the maximum adjustment displacement of the sliding element, when viewed along the force direction and the other force direction. Advantageously, fine adjustment of the switching displacement relative to the maximum adjustment displacement of the sliding element is possible.

[0015] Furthermore, it is proposed that the sliding element and / or transmission unit be configured such that the switching displacement of the operating unit, especially up to the switching point of the electronic device unit, corresponds to at most 30% of the maximum adjustment displacement of the sliding element. In particular, the sliding element and / or transmission unit are configured such that the switching displacement of the operating unit, especially up to the switching point of the electronic device unit, corresponds to at most 30%, preferably at most 20%, and particularly preferably at most 10% of the maximum adjustment displacement of the sliding element. In particular, the sliding element and / or transmission unit are configured such that the sliding element operates the switching element of the electronic device unit no later than 30% of the maximum adjustment displacement of the sliding element. This allows for advantageous coordination of the switching displacement, especially the switching point.

[0016] Furthermore, it is proposed that the operating unit includes at least one operating element operatively connected to the transmission unit, particularly the aforementioned operating element, particularly at least one operating cable, for operating the sliding element. The switching displacement of the operating unit, particularly up to the switching point of the electronic device unit, relative to the maximum adjustable displacement of the operating element, depends on the construction of the transmission unit. "Maximum adjustable displacement of the operating element" should be understood in particular as the maximum displacement distance that the operating element can move, particularly depending on the operating displacement of the operating unit. In particular, the maximum adjustable displacement of the operating element depends on the operating element of the machine tool used with the machine tool switching device, particularly the geometry of the operating element. In particular, the operating element can have different maximum adjustable displacements depending on different machine tools, particularly different operating elements. Preferably, the switching displacement, particularly up to the switching point of the electronic device unit, particularly relative to the maximum adjustable displacement of the operating element, depends on the construction, particularly the parameters, of the first and / or second pressure and / or pull elements. By way of example, it is conceivable that a transmission unit with a smaller spring force in its first pressing and / or pulling element than in its second pressing and / or pulling element provides a shorter switching displacement, particularly relative to the maximum adjustment displacement of the actuating element, compared to another transmission unit—the other transmission unit having a larger spring force in its first pressing and / or pulling element than in its second pressing and / or pulling element. Advantageously, fine adjustment of the switching displacement relative to the maximum adjustment displacement of the actuating element is possible.

[0017] Furthermore, it is proposed that the transmission unit is configured such that the switching displacement of the operating unit, especially up to the switching point of the electronic device unit, corresponds to at most 15% of the maximum adjustment displacement of the operating element. In particular, the transmission unit is configured such that the switching displacement of the operating unit, especially up to the switching point of the electronic device unit, corresponds to at most 15%, preferably at most 10%, and particularly preferably at most 5% of the maximum adjustment displacement of the operating element. In particular, the transmission unit is configured such that the operating unit, especially the sliding element, operates the switching element of the electronic device unit at least after the operating element has moved 15% of its maximum adjustment displacement. This enables advantageous coordination of the switching displacement, especially the switching point.

[0018] Furthermore, it is proposed that the machine tool switching device includes at least one housing unit, particularly the aforementioned housing unit, having at least one receiving area, particularly at least one receiving channel, where a transmission unit and / or an operating unit can be arranged. The housing unit is preferably constructed in a box-like shape in the assembled state. The housing unit is preferably made of plastic. Alternatively, it is conceivable that the housing unit is made of composite materials, metal, or other materials deemed meaningful by those skilled in the art. Preferably, the transmission unit, operating unit, and / or electronic unit are at least partially arranged within the housing unit, particularly within at least one receiving section of the housing unit. Preferably, the housing unit has at least one fastening section arranged separately from the receiving section, which is provided for fastening to the machine tool. Preferably, with the housing unit fastened to the machine tool, at least one component of the machine tool, particularly a rod, extends through the fastening section. The housing unit particularly has at least two, preferably at least three, and particularly preferably at least four housing parts, which are fixed to each other, particularly by means of the fixing elements of the machine tool switching device, particularly by means of screws.

[0019] Preferably, the housing unit can have multiple receiving areas, the number of which corresponds particularly to the number of actuating elements. The at least one receiving area is preferably defined by multiple ribs of at least one housing portion of the housing unit. The at least one receiving area is preferably configured to at least fully receive a first pressing and / or pulling element, a second pressing and / or pulling element, and a sliding element. The at least one receiving area is particularly configured to precisely accommodate the first pressing and / or pulling element, the second pressing and / or pulling element, and the sliding element. The at least one receiving area is preferably configured to at least partially receive the actuating elements. In particular, the actuating elements extend partially within and partially outside the at least one receiving area, particularly outside the housing unit. In particular, the housing unit, and especially at least one housing portion of the housing unit, has at least one through-hole through which the actuating element can extend from the housing unit, and especially the receiving area. Preferably, the first pressing and / or pulling element, the second pressing and / or pulling element, and the sliding element, in the assembled state of the housing unit, are arranged at least substantially without gaps in the at least one receiving area in a direction transverse to the force direction of the first pressing and / or pulling element and in a direction transverse to the additional force direction of the second pressing and / or pulling element. Advantageously, it allows for a space-saving arrangement of at least a portion of the transmission unit and the operating unit. Advantageously, it provides a compact machine tool switching device.

[0020] Furthermore, it is proposed that the at least one receiving area is provided for at least one additional operating element of the operating unit to extend through the entire housing unit in a manner that is not functionally connected to the electronic device unit and, in particular, without a transmission part. The additional operating element is preferably constructed to be at least substantially similar to the operating element in terms of shape, material composition, etc. The additional operating element is preferably constructed to be longer than the operating element. Preferably, the additional operating element extends to the drive unit, particularly the drive unit with an internal combustion engine, in the assembled state of the machine tool's operating element 60 used with the machine tool's switching device, and can be operated by the additional operating element. In particular, the additional operating element is provided for mechanically operating the drive unit, particularly one constructed differently from the electric drive unit. This drive unit can particularly be provided for driving the machine tool's forward unit. For example, it is conceivable that the drive unit has a pulley for driving the forward unit, and the additional operating element is provided for adjusting the diameter of the pulley. Preferably, the housing unit, particularly at least one housing portion of the housing unit, has at least one additional through-hole through which the additional operating element 44 can extend. Preferably, the through-hole and the additional through-hole are arranged on two opposing walls of the housing unit, particularly the at least one housing portion. Preferably, the at least one receiving area is configured without a sliding element, a first pressing and / or pulling element, and a second pressing and / or pulling element for the additional operating element to pass through. Preferably, the at least one receiving area is configured to receive the additional operating element or to receive a transmission unit and an operating unit in an interchangeable manner. Advantageously, a modular machine tool switch can be provided, which advantageously allows for convenient use with different drive units.

[0021] Furthermore, it is proposed that the housing unit defines at least one opening leading to the at least one receiving area, which allows at least one additional actuating element of the operating unit to be introduced into the at least one receiving area when the housing unit is in a closed state. "Closed state of the housing unit" should be understood in particular as a state in which the at least two housing portions of the housing unit forming the receiving section are fixed to each other. Preferably, the closed state of the housing unit differs from the state in which the housing unit is mounted on the machine tool. In particular, the opening is closed by at least one fixed housing portion of the housing unit when the housing unit is mounted on the machine tool. Preferably, the opening extends transversely to the at least one receiving area in its main extension direction. The "main extension direction" of an object should be understood in particular as a direction parallel to the longest side of the smallest geometric cube that exactly completely surrounds the object. Preferably, the housing unit can have at least one steering element arranged on, and in particular in, the opening, against which the additional actuating element can rest. Alternatively or additionally, the housing unit may have at least one damping element arranged on, and in particular in, the opening, exemplarily made of rubber, which is configured to reduce vibration of other operating elements passing through the housing unit, and in particular to prevent noise. Advantageously, the installation costs for adapting the machine tool switch to the machine tool can be kept minimal for the user. Advantageously, a user-friendly machine tool switch can be provided.

[0022] Furthermore, it is proposed that the housing unit at least sectionally constitutes at least one, particularly funnel-shaped, guide region for guiding the additional actuating element into the opening. Preferably, the guide region is formed, particularly defined, by the at least two housing portions forming the receiving section. In particular, the at least two housing portions have a pre-defined funnel-shaped guide region in the region surrounding the opening. Preferably, at least one of the housing portions gradually narrows in the direction toward the opening. In particular, the at least two housing portions form a guide region that tapers in a funnel shape in the direction toward the opening. Advantageously, this facilitates the user in introducing the additional actuating element into the opening.

[0023] Furthermore, it is proposed that the machine tool switching device includes at least one output unit configured to output at least one switching state and / or charging state of the electronic device unit, particularly optically, acoustically, and / or tactilely. Preferably, the output unit is connected to the electronic device unit, particularly electrically, in signal transmission technology. Preferably, the output unit has at least one output element, which can be arranged, in particular, on the circuit board of the electronic device unit. In particular, the output unit can have multiple output elements, particularly at least two, preferably at least three, and especially preferably at least four. Preferably, the output unit is configured as an optical output unit to optically output at least one switching state and / or charging state of the electronic device unit, and particularly has at least one output element configured as a light-emitting element. Preferably, the output element is configured, in particular, as a multi-color light-emitting diode (LED). Alternatively, it is conceivable that the optical output unit has at least one output element configured as a display, etc. Alternatively or additionally, the output unit may be conceived as an acoustic and / or tactile output unit, configured to acoustically and / or tactilely output at least one switching state and / or charging state of the electronic device unit, and particularly possesses at least one acoustic output element, such as a loudspeaker, and / or at least one tactile output element, such as a vibration motor. The switching state of the electronic device unit specifically indicates the switching position of the at least one switching element of the electronic device unit. The charging state of the electronic device unit specifically indicates the remaining charge of at least one energy supply source of the electronic device unit and / or the machine tool, such as a battery. Advantageously, feedback regarding the switching process can be conveniently provided to the user based on the switching process.

[0024] Furthermore, it is proposed that the machine tool switching device includes at least one secondary operating unit, wherein the electronic unit is designed to output at least one signal based on the operation performed via the operating unit and the secondary operating unit. The secondary operating unit preferably provides at least one additional switching element for operating the electronic unit. Preferably, the secondary operating unit is constructed differently from the operating unit. Alternatively, it is conceivable that the secondary operating unit is constructed at least substantially similar to the operating unit. Preferably, the secondary operating unit has at least one secondary operating element, which is particularly configured not to be coupled to the operating elements of the machine tool. In particular, the secondary operating element can be directly operated by the user of the machine tool switching device. In particular, the secondary operating element is configured for directly, particularly without a transmission, operating the additional switching element. The secondary operating element can particularly be constructed as a push button, slide switch, rotary switch, or other secondary operating elements deemed meaningful by those skilled in the art. In particular, the secondary operating element is arranged at least partially outside the housing unit, particularly for user operation, and at least partially inside the housing unit, particularly for operating the additional switching element. Preferably, the secondary operating unit has at least one secondary pressure and / or tension element, in particular a pressure spring, which is configured to spring-load the secondary operating element elastically, in particular bistable, to the housing unit. Specifically, the secondary operating element is capable of locking in at least one switching position, in particular at least in an operating position. Preferably, the electronic unit is designed to output at least one signal, in particular at least one control signal for activating the electric drive unit, to the electric drive unit according to the operation performed via the operating unit and according to the operation performed, in particular simultaneously, via the secondary operating control signal unit. Advantageously, this provides a user-friendly and user-safe machine tool switching device.

[0025] The present invention also takes as a starting point a machine tool, particularly a pushable gardening tool, having at least one electric drive unit and at least one machine tool switch, particularly the machine tool switch according to the present invention.

[0026] It is proposed that the machine tool switching device be designed for electronic control of the electric drive unit. Preferably, the machine tool is constructed as a machine tool at least partially converted from an internal combustion engine to an electric motor. Advantageously, it is possible to provide a machine tool with an electric drive unit that can be controlled in a user-friendly manner.

[0027] The machine tool switching device according to the invention and / or the machine tool according to the invention should not be limited to the applications and embodiments described above. In particular, the machine tool switching device according to the invention and / or the machine tool according to the invention can have a different number of individual elements, components, and units than those mentioned herein. Furthermore, regarding the numerical ranges stated in this disclosure, values ​​within the mentioned ranges should also be considered public and can be used arbitrarily. Attached Figure Description

[0028] Other advantages are illustrated in the following figures, which depict embodiments of the invention. The figures, description, and claims contain numerous combinations of features. Those skilled in the art may also appropriately view these features individually and generalize them into other meaningful combinations.

[0029] The attached diagram shows:

[0030] Figure 1 A perspective view shows a machine tool according to the invention, equipped with a machine tool switching device according to the invention.

[0031] Figure 2 Shown in 3D Figure 1 The machine tool switch device according to the present invention is installed in Figure 1 Detailed diagram of the working state of the machine tool according to the present invention.

[0032] Figure 3 Show in 3D Figure 1 An exploded view of the machine tool switching device according to the present invention.

[0033] Figure 4 Shown in 3D Figure 1 The electronic device unit of the machine tool switching device according to the present invention,

[0034] Figure 5 Shown schematically in cross-sectional view Figure 1 The machine tool switching device according to the present invention,

[0035] Figure 6 Shown in another schematic cross-sectional view Figure 1 The machine tool switching device according to the present invention,

[0036] Figure 7 As shown in the diagram Figure 1 A graph showing the switching displacement of the operating unit of the machine tool switching device according to the present invention.

[0037] Figure 8 As shown in the diagram Figure 7 Another curve showing the switch displacement.

[0038] Figure 9 As shown in the diagram Figure 1 The machine tool switching device according to the present invention,

[0039] Figure 10 As shown in another diagram Figure 1 The machine tool switch device according to the present invention. Detailed Implementation

[0040] Figure 1 A perspective view shows a machine tool 14, particularly a tractable gardening implement, having at least one electric drive unit 12 and at least one machine tool switch 10, especially for tractable gardening implements. The machine tool 14 is preferably constructed as a modified machine tool 14. The machine tool 14 particularly has the at least one electric drive unit 12, which includes an electric motor, replacing at least one drive unit with an internal combustion engine originally present in the machine tool 14. The machine tool 14 is preferably constructed as a tractable gardening implement, particularly a lawnmower. In the current embodiment, the machine tool 14 is exemplarily constructed as a lawnmower. The machine tool 14 can also be constructed, particularly, as a motorized hedge trimmer, high-branch trimmer, chainsaw, a machine tool different from a gardening implement, particularly a handheld machine tool, exemplarily constructed as a jigsaw, circular saw, electric drill, etc., or constructed as other machine tools that are deemed meaningful by those skilled in the art. The machine tool switch 10 is particularly designed for electronically controlling the at least one electric drive unit 12 of the at least one machine tool 14. The machine tool switching device 10 is preferably designed for at least one electric drive unit 12 of the electronically controlled machine tool 14, which is configured to drive at least one processing unit of the machine tool 14, such as a lawnmower mechanism, saw chain, shearing blade, etc. (not shown further here). Alternatively or additionally, the machine tool switching device 10 may be designed for at least one additional electric drive unit of the electronically controlled machine tool 14, which is configured to drive at least one forward unit 54 of the machine tool 14, such as the drive wheel 56 of the machine tool 14 configured as a lawnmower.

[0041] The machine tool switch 10, and especially its housing unit 38, is preferably constructed as a box or case. Preferably, the machine tool switch 10, and especially its housing unit 38, can be fastened to the machine tool 14 by the machine tool 14 or by the user of the machine tool switch 10. Preferably, the machine tool switch 10, and especially its housing unit 38, can be fastened to the machine tool 14 without tools. Figure 1 In particular, the machine tool switch 10, especially the housing unit 38, is fastened to the push bow (Schubbügel) 58 of the machine tool 14.

[0042] Figure 2 Shown in 3D Figure 1 The machine tool switch 10 is installed in Figure 1 A detailed view of the machine tool 14 in its current state. The machine tool switching device 10 includes, in particular, at least one mechanical operating unit 16, 16' and at least one electronic device unit 18, which is designed to output at least one signal, especially at least one control signal, based on the operation performed by the operating units 16, 16'. Preferably, the machine tool switching device 10 includes at least one transmission unit 20, 20' operatively connected to the operating units 16, 16', which is configured to, in particular mechanically, adjust the ratio between the operating displacement and the switching displacement of the operating units 16, 16'.

[0043] Machine tool 14 preferably has at least one operating element 60, such as an operating bow, operating lever, operating switch, etc., which is previously configured to operate a drive unit with an internal combustion engine originally present in machine tool 14. In the present embodiment, operating element 60 is exemplary configured as an operating bow. Preferably, operating element 60 has at least two different positions, and operating element 60 is capable of moving a certain displacement distance between said at least two different positions, said movement being, for example, moving, swinging, etc. Preferably, at least one operating element 34, 34' of operating units 16, 16', especially operating units 16, 16', is capable of being coupled to operating element 60. Operating elements 34, 34' are preferably configured as operating cables, operating wires, etc. Preferably, the operating elements 34, 34' coupled to operating element 60, especially the pulling operating elements 34, 34', are operated according to the operation of operating element 60 of machine tool 14. Preferably, the actuating elements 34, 34' are operatively connected to at least one additional element of the actuating units 16, 16', particularly the sliding elements 26, 26', which are specifically configured to actuate the electronic device unit 18. Alternatively, it is conceivable that the actuating elements 34, 34' are configured to actuate the electronic device unit 18.

[0044] Figure 3 Shown in 3D Figure 1An exploded view of the machine tool switching device 10. The electronic unit 18 preferably has at least one switching element 28, 30, 62, such as a microswitch, potentiometer, relay, etc. Preferably, the actuation units 16, 16', especially the sliding elements 26, 26', are configured to actuate the at least one switching element 28, 30 of the electronic unit 18 according to the actuation element 60. Exemplarily, it is conceivable that the actuation element 34, 34' is moved according to the actuation element 60, which in particular moves the sliding element 26, 26', and the sliding element actuates the at least one switching element 28, 30 of the electronic unit 18 according to the movement. Preferably, the at least one switching element 28, 30, 62, especially the switching elements 28, 30, 62 configured as microswitches, has at least two switching states, wherein a signal for stopping the activation of the electric drive unit 12 is output in a first switching state and a signal for activating the electric drive unit 12 is output in a second switching state. Alternatively, it is conceivable that the at least one switching element 28, 30, 62, especially a switching element configured as a potentiometer, has multiple switching states, particularly continuously varying switching states, wherein, for example, different signals are output to adjust to different speeds of the electric drive unit 12 according to different switching states. The electronic device unit 18 can in particular have multiple switching elements 28, 30, 62, the number of which corresponds particularly to the number of operating units 16, 16' of the machine tool switching device 10. In the current embodiment, the electronic device unit 18 exemplarily has three switching elements 28, 30, 62, which are exemplarily configured at least substantially similarly to each other, especially as microswitches (see...). Figure 4In the current embodiment, the machine tool switching device 10 exemplarily has an operating unit 16 and an additional, particularly optional, operating unit 16', which are exemplarily constructed at least substantially similarly to each other. The operating unit 16 is particularly provided with a switching element 28 for operating the electronic device unit 18. The additional operating unit 16' is provided with an additional switching element 30 for operating the electronic device unit 18. For clarity, the following description is limited to the operating unit 16 and the switching element 28. This description can also be applied at least substantially similarly to the additional operating unit 16' and the additional switching element 30. The electronic device unit 18 is particularly provided with an additional switching element 62. The additional switching element 62 is particularly operable by a secondary operating unit 52 of the machine tool switching device 10. Preferably, the electronic device unit 18 has at least one circuit board 64 on which the switching elements 28, 30, and 62 are arranged. Preferably, the electronic device unit 18 includes at least one signal line element 66, particularly a cable, which is particularly electrically connectable to the electric drive unit 12. Preferably, the electronic device unit 18 is designed to output signals to the electric drive unit 12 via the signal line element 66.

[0045] Preferably, the machine tool switching device 10 can have a plurality of transmission units 20, 20', the number of which corresponds in particular to the number of operating units 16, 16'. In the present embodiment, the machine tool switching device 10 exemplaryly has a transmission unit 20 associated with the operating unit 16 and additional, particularly optional, transmission units 20' associated with the additional operating unit 16'. The transmission unit 20 and the additional transmission units 20' are constructed, in particular, at least substantially similarly to each other. For clarity, the following description is limited to the transmission unit 20. This description can also be applied, at least substantially similarly, to the additional transmission units 20'. In particular, the operating displacement of the operating unit 16 depends on the displacement distance between the at least two switching states of the operating element 60. In particular, the operating displacement of the operating unit 16 on different machine tools 14 can be different, and the different machine tools have different displacement distances, in particular, between the at least two switching states of the operating element 60. Preferably, the transmission unit 20 is configured to pre-define at least substantially constant switching displacement, independent of the operating displacement of the operating unit 16, and especially independent of different operating elements 60 on different machine tools 14. Preferably, the transmission unit 20 is constructed as a mechanical transmission unit 20, which in particular has mechanical elements for adjusting the ratio between the operating displacement and the switching displacement. Specifically, the transmission unit 20 has at least one pressure and / or tension element 22, 24, preferably multiple pressure and / or tension elements 22, 24, which are operatively connected to the operating unit 16, especially to the operating element 34 and / or the sliding element 26. The at least one pressure and / or tension element 22, 24, especially a spring, pressure cylinder, etc., is particularly configured to load the operating element 34 and / or the sliding element 26 with pressure and / or tension. Alternatively or additionally, the mechanical transmission unit 20 may have gears, rope traction systems, etc., for adjusting the ratio between the operating displacement and the switching displacement. Alternatively, it can be conceived that the transmission unit 20 is configured as at least partially electric, especially electromechanical, transmission unit, in particular having at least one servo driver for adjusting the ratio between the operating displacement and the switching displacement; configured as a hydraulic transmission unit, in particular having at least one hydraulic cylinder for adjusting the ratio between the operating displacement and the switching displacement; or configured as a pneumatic transmission unit, in particular having at least one pneumatic cylinder for adjusting the ratio between the operating displacement and the switching displacement.

[0046] Preferably, the transmission unit 20 is configured to provide a switching displacement of the operating unit 16 that is shorter than the operating displacement of the operating unit 16, the switching displacement referring in particular to the distance up to the switching point of the electronic device unit. Depending on the machine tool 14 used with the machine tool switching device 10, and especially depending on the operating element 60 of the machine tool 14, the operating displacement of the operating unit 16 can be, for example, at least 5 cm, at least 10 cm, at least 20 cm, or at least 30 cm long. In particular, the transmission unit 20 is configured to provide a switching displacement of the operating unit 16 of up to 2 cm, preferably up to 1.5 cm, particularly preferably up to 1 cm, and very particularly preferably up to 0.5 cm.

[0047] Preferably, the transmission unit 20 includes at least one pressure and / or tension element 22, 24, configured to adjust the switching displacement of the operating unit 16 and / or return the operating unit 16 to an unoperated initial position. In the current embodiment, the transmission unit 20 exemplarily has two pressure and / or tension elements 22, 24. Preferably, the pressure and / or tension elements 22, 24 are constructed as springs, especially compression springs or tension springs. The pressure and / or tension elements 22, 24 are preferably constructed as helical springs. The pressure and / or tension elements 22, 24 are preferably constructed as metal springs. Alternatively, it is conceivable that the pressure and / or tension elements 22, 24 are constructed as rubber springs, air springs, gas compression springs, or other pressure and / or tension elements that are deemed meaningful by those skilled in the art. The pressure and / or tension elements 22, 24 are preferably operatively connected to the operating unit 16, especially the operating element 34, and / or the sliding element 26, particularly through mechanical coupling. The transmission unit 20 preferably has the at least two pressure and / or tension elements 22, 24, wherein at least one second pressure and / or tension element 24 is mechanically coupled to the actuating element 34 and at least one first pressure and / or tension element 22 is mechanically coupled to the sliding element 26. In particular, the switching displacement depends on the parameters of the pressure and / or tension elements 22, 24, especially the pressure and / or tension (e.g., spring force), length, etc. In particular, the switching displacement can be adjusted by adapting the parameters of the pressure and / or tension elements 22, 24, especially the pressure and / or tension, e.g., spring force, length, etc. The pressure and / or tension elements 22, 24 are preferably configured to load the actuating unit 16, especially the actuating element 34 and / or the sliding element 26, with a reset force in a switching position, especially when actuated by the actuating element 60. The pressure and / or pull elements 22, 24 are particularly configured to return the operating unit 16, especially the operating element 34 and / or the sliding element 26 from the operated switch position to the unoperated initial position, especially to the unoperated initial position, according to the release of the operation.

[0048] The machine tool switching device 10 preferably includes at least one housing unit, particularly the aforementioned housing unit 38, having at least one receiving area 40, 42, particularly at least one receiving channel, where transmission units 20, 20' and / or operating units 16, 16' can be arranged. Preferably, the housing unit 38 can have multiple receiving areas 40, 42, the number of which corresponds particularly to the number of operating elements 34, 34', 44. In the current embodiment, the housing unit 38 exemplarily has one receiving area 40 and another receiving area 42. The receiving area 40 is particularly provided for receiving the operating unit 16 and the transmission unit 20. The other receiving area 42 is particularly provided for receiving the other operating unit 16' and the other transmission unit 20'. The housing unit 38 is preferably constructed in a box-like shape in the assembled state. The housing unit 38 is preferably made of plastic. Alternatively, it is conceivable that the housing unit 38 is made of composite materials, metals, or other materials that are deemed meaningful by those skilled in the art. Preferably, the transmission unit 20, the operating unit 16, and / or the electronic device unit 18 are at least partially arranged within the housing unit 38, particularly within at least one receiving section 68 of the housing unit 38. Preferably, the housing unit 38 has at least one fastening section 70 arranged separately from the receiving section 68, which is configured for fastening to the machine tool 14. Preferably, with the housing unit 38 fastened to the machine tool 14, at least one component of the machine tool 14, particularly a rod, which in the present embodiment is exemplarily a push bow 58, extends through the fastening section 70 (see...). Figure 2 The housing unit 38 has at least two, preferably at least three, and particularly preferably at least four housing portions 72, 74, 76, 78, which are fixed to each other, in particular by means of the fixing element 80 of the machine tool switch 10, and especially by means of screws. In the present embodiment, the housing unit 38 exemplarily has a first housing portion 72, a second housing portion 74, a third housing portion 76, and a fourth housing portion 78.

[0049] For clarity, the following description is limited to the receiving region 40. This description can also be applied, at least substantially, to the other receiving region 42. The receiving region 40 is preferably defined by rib elements 82 of at least the first housing portion 72 of the housing unit 38. The receiving region 40 is preferably configured to at least fully receive the first pressing and / or pulling element 22, the second pressing and / or pulling element 24, and the sliding element 26. The receiving region 40 is particularly configured to precisely accommodate the first pressing and / or pulling element 22, the second pressing and / or pulling element 24, and the sliding element 26. The receiving region 40 is preferably configured to at least partially receive the actuating element 34. In particular, the actuating element 34 extends partially within and partially outside the receiving region 40, particularly outside the housing unit 38. In particular, the housing unit 38, and especially the at least first housing portion 72 of the housing unit 38, has at least one through-hole through which the actuating element 34 can extend from the housing unit 38, and especially the receiving region 40. Preferably, the first pressing and / or pulling element 22, the second pressing and / or pulling element 24, and the sliding element 26, in the assembled state of the housing unit 38, are arranged in the receiving region 40 at least substantially without gaps in a direction transverse to the first force direction 84 of the first pressing and / or pulling element 22 and in a direction transverse to the other force direction 86 of the second pressing and / or pulling element 24 (see [link]). Figure 5 ).

[0050] Preferably, the at least one receiving area, particularly the additional receiving area 42, is provided for at least one additional operating element 44 of the operating unit 16 to extend through the entire housing unit 38 in a manner that is not functionally connected to the electronic device unit 18 and, in particular, without a transmission component. The additional operating element 44 is preferably constructed to be at least substantially similar to the operating element 34 in terms of shape, material composition, etc. The additional operating element 44 is preferably constructed to be longer than the operating element 34. Preferably, the additional operating element 44 extends to the drive unit, particularly the drive unit with an internal combustion engine, in the assembled state of the operating element 60 of the machine tool 14 used with the machine tool switching device 10, which can be operated by the additional operating element 44 (not shown further here). In particular, the additional operating element 44 is provided for mechanically operating the drive unit, particularly one with a different construction from the electric drive unit 12. This drive unit can particularly be provided for driving the forward unit 54 of the machine tool 14. For example, it is conceivable that the drive unit has a pulley for driving the forward unit 54, and the additional operating element 44 is provided for adjusting the diameter of the pulley. Preferably, the housing unit 38, particularly at least the first housing portion 72 of the housing unit 38, has at least one additional through-hole 88 and at least one additional through-hole 90 through which the additional actuating element 44 can extend. Preferably, the additional through-hole 88 and the additional through-hole 90 are arranged on two opposing walls 92, 94 of the housing unit 38, particularly the first housing portion 72. In the present embodiment, the additional through-hole 88 is exemplarily arranged on wall 92 and the additional through-hole 90 is arranged on the additional wall 94. Preferably, the additional receiving region 42 is configured to not have the sliding element 26' of the additional actuating unit 16', the first press and / or pull element 22' of the additional transmission unit 20', and the second press and / or pull element 24' of the additional actuating unit 16'. Preferably, the additional receiving region 42 is configured to receive the additional actuating element 44 or the additional transmission unit 20' and the additional actuating unit 16' in an interchangeable manner.

[0051] Preferably, the machine tool switching device 10 includes at least one output unit 50, which is configured to output at least one switching state and / or charging state of the electronic device unit 18, particularly optically, acoustically, and / or tactilely. Preferably, the output unit 50 is connected to the electronic device unit 18 in signal transmission technology, particularly electrically. Preferably, the output unit 50 has at least one output element 96, which can be arranged, in particular, on the circuit board 64 of the electronic device unit 18. In particular, the output unit 50 can have multiple output elements 96, particularly at least two, preferably at least three, and especially preferably at least four output elements 96. In the current embodiment, the output unit 50 exemplarily has four output elements 96. Preferably, the output unit 50 is configured as an optical output unit for optically outputting at least one switching state and / or charging state of the electronic device unit 18, and particularly has at least one output element 96 configured as a light-emitting element. In the current embodiment, the output unit 50 exemplarily has four output elements 96 configured as light-emitting elements. Preferably, the output elements 96 are configured, in particular, multi-color light-emitting diodes. Alternatively, it is conceivable that the optical output unit 50 has at least one output element 96 configured as a display, etc. Alternatively or additionally, it is conceivable that the output unit 50, as an acoustic and / or tactile output unit, is configured to acoustically and / or tactilely output at least one switching state and / or charging state of the electronic device unit 18, and particularly has at least one acoustic output element, such as a speaker, and / or at least one tactile output element, such as a vibration motor. The switching state of the electronic device unit 18 specifically indicates the switching positions of the switching elements 28, 30, 62 of the electronic device unit 18. The charging state of the electronic device unit 18 specifically indicates the remaining charge of at least one energy supply source of the electronic device unit 18 and / or the machine tool 14, such as a battery (not further shown here). The third housing portion 76 particularly has four slots 98 through which light emitted by the output element 96 can pass. The output unit 50 particularly has at least one marking element 100 for marking the output unit 50, which can be arranged particularly on the third housing portion 76.

[0052] Preferably, the machine tool switching device 10 includes at least one secondary operating unit, particularly the aforementioned secondary operating unit 52, wherein the electronic device unit 18 is designed to output at least one signal based on the operation performed via the operating unit 16 and the secondary operating unit 52. The following description also applies at least substantially similarly to the cooperative operation of the secondary operating unit 52 with the additional operating unit 16'. The secondary operating unit 52 is preferably provided with at least one additional switching element 62 for operating the electronic device unit 18. Preferably, the secondary operating unit 52 is constructed differently from the operating unit 16. Alternatively, it is conceivable that the secondary operating unit 52 is constructed at least substantially similarly to the operating unit 16. Preferably, the secondary operating unit 52 has at least one secondary operating element 102, which is particularly configured not to be coupled to the operating element 60 of the machine tool 14. In particular, the secondary operating element 102 can be directly operated by the user of the machine tool switching device 10. In particular, the secondary operating element 102 is provided for directly, particularly without a transmission, operating the additional switching element 62. The secondary actuating element 102 can be configured as a button, slide switch, rotary switch, or other secondary actuating element that is meaningful to those skilled in the art. In the present embodiment, the secondary actuating element 102 is exemplary configured as a button. In particular, the secondary actuating element 102 is arranged at least partially outside the housing unit 38, especially for user operation, and at least partially within the housing unit 38, especially for operating an additional switching element 62. Preferably, the secondary actuating unit 52 has at least one secondary compression and / or tension element 104, especially a pressure spring, configured to spring-load the secondary actuating element 102 onto the housing unit 38 in a spring-loaded manner, especially in a bistable manner. In particular, the secondary actuating element 102 can be locked in at least one switching position, especially at least in an operating position. Preferably, the electronic device unit 18 is designed to output at least one signal, in particular at least one control signal for activating the electric drive unit 12, to the electric drive unit 12 according to the manipulation performed by the manipulation unit 16 and, in particular, the simultaneous manipulation performed by the secondary manipulation control signal unit 52.

[0053] Figure 4 Shown in 3D Figure 1The electronic component unit 18 of the machine tool switching device 10. Switching elements 28, 30, and 62 are clearly identifiable. Particularly when viewed along the main extension direction 106 of the circuit board 64, switching element 28 and the additional switching element 30 are arranged at the same height on the circuit board 64. When viewed along the main extension direction 106 of the circuit board 64, the additional switching element 62 is staggered from switching element 28 and the additional switching element 30. When viewed transversely to the main extension direction 106 of the circuit board 64, switching element 28 and the additional switching element 30 are arranged spaced apart from each other on the circuit board 64. When viewed transversely to the main extension direction 106 of the circuit board 64, the additional switching element 62 is centrally located between switching element 28 and the additional switching element 30.

[0054] Figure 5 Shown schematically in cross-sectional view Figure 1 The machine tool switching device 10. In Figure 5The diagram shows the actuation unit 16 in an unoperated switch position. For clarity, the following description is limited to the interaction of the actuation unit 16 with the transmission unit 20 and the switching element 28. This description can also be applied, at least substantially similarly, to the interaction of the additional actuation unit 16 with the additional transmission unit 20 and the additional switching element 30. Preferably, the transmission unit 20 includes at least two compression and / or tension elements, particularly the aforementioned compression and / or tension elements 22, 24, wherein at least one first compression and / or tension element 22 is configured as a tension spring and at least one second compression and / or tension element 24 is configured as a compression spring. Preferably, the first compression and / or tension element 22 is directly operatively connected to the sliding element 26, particularly mechanically coupled to the sliding element 26. Preferably, the second compression and / or tension element 24 is directly operatively connected to the actuation element 34, particularly mechanically coupled to the actuation element 34. Preferably, the first pressing and / or pulling element 22 and the second pressing and / or pulling element 24 are arranged, in particular, in the housing unit 38 such that the first pressing and / or pulling element 22 applies force, in particular tension, to the operating unit 16, in particular the sliding element 26, in a force direction 84, and the second pressing and / or pulling element 24 applies force, in particular pressure, to the operating unit 16, in particular the operating element 34, in a further force direction 86, at least substantially parallel to each other. Preferably, the force direction 84 and the further force direction 86 point against the operating direction 108, in which the operating unit 16 moves according to the operation, in particular the operation performed by the operating element 60. In particular, the force direction 84 and the further force direction 86 extend at least substantially parallel to the operating direction 108. In particular, the second pressing and / or pulling element 24 is configured to apply pressure acting against the operating direction 108 to the operating element 34. In particular, the first pressure and / or pull element 22 is configured to apply a pulling force acting against the actuation direction 108 to the sliding element 26. The first pressure and / or pull element 22 is preferably fastened to the sliding element 26 and the additional wall 94 of the housing unit 38. The first pressure and / or pull element 22 is particularly configured to pull the sliding element 26 in a direction toward the additional wall 94. The second pressure and / or pull element 24 is preferably supported on the sliding element 26. The second pressure and / or pull element 24 is particularly configured to press the actuation element 34 against the sliding element 26, especially in a direction toward the additional wall 94. In particular, the actuation element 34 extends at least sectionally within the second pressure and / or pull element 24. In particular, the actuation element 34 has at least one end 110 against which the second pressure and / or pull element 24 can press. Preferably, by adapting the parameters of these pressure and / or tension elements 22, 24, especially the pressure and / or tension (e.g., spring force), length, arrangement relative to each other, the ratio between the operating displacement and the switching displacement can be adjusted.

[0055] Preferably, the operating unit 16 includes at least one sliding element, particularly the aforementioned sliding element 26, operatively connected to the transmission unit 20, for operating at least one switching element 28, particularly a micro switch, of the electronic device unit 18. The geometry of the sliding element 26 influences the switching displacement of the operating unit 16, particularly up to the switching point of the electronic device unit 18, relative to the maximum adjustment displacement 32 of the sliding element 26. Specifically, the maximum adjustment displacement 32 of the sliding element 26 is independent of the operating displacement of the operating unit 16. In particular, the sliding element 26 has the same maximum adjustment displacement 32, independent of the machine tool 14 used with the machine tool switching device 10. The sliding element 26 is preferably configured to operate the switching element 28 of the electronic device unit 18. The sliding element 26 is particularly configured to move the switching tongue 112 of the switching element 28, particularly laterally to the force direction 84 and the other force direction 86. Preferably, the movement of the switch tongue 112 closes at least one contact of the switching element 28, which is configured as a microswitch, and / or changes the resistance value of the switching element 28, which is configured as a potentiometer. The sliding element 26 preferably has at least one actuating protrusion 114, which is configured to actuate the switching element 28, particularly to move the switch tongue 112 of the switching element 28. The switching displacement length, particularly relative to the maximum adjustment displacement 32 of the sliding element 26, up to the switching point, depends particularly on the geometry of the sliding element 26, particularly the actuating protrusion 114. It is conceivable, by way of example, that the sliding element 26, particularly the actuating protrusion 114, having a larger maximum extension dimension transverse to the force direction 84 and another force direction 86, actuates the switching element 28 after a shorter switching displacement, particularly relative to the maximum adjustment displacement 32 of the sliding element 26, compared to another sliding element, particularly another actuating protrusion, having a smaller maximum extension dimension transverse to the force direction 84 and another force direction 86. It can be conceivably, when viewed along force direction 84 and the other force direction 86, that the sliding element 26, which has the actuating protrusion 114 further forward than the other sliding element, actuates the switching element 28 after a shorter switching displacement, particularly relative to the maximum adjustment displacement 32 of the sliding element 26.

[0056] Preferably, the operating unit 16 includes at least one operating element, particularly the aforementioned operating element 34, and particularly at least one operating cable, operatively connected to the transmission unit 20 for operating the sliding element 26. The switching displacement of the operating unit 16, particularly up to the switching point of the electronic device unit 18, relative to the maximum adjustment displacement 36 of the operating element 34, depends on the configuration of the transmission unit 20. Specifically, the maximum adjustment displacement 36 of the operating element 34 depends on the geometry of the operating element 60 of the machine tool 14 used with the machine tool switching device 10. In particular, depending on the different machine tools 14, and particularly different operating elements 60, the operating element 34 can have different maximum adjustment displacements 36. Preferably, the switching displacement, particularly up to the switching point of the electronic device unit 18, particularly relative to the maximum adjustment displacement 36 of the operating element 34, depends on the configuration, particularly the parameters, of the first pressure and / or pull element 22 and the second pressure and / or pull element 24. For example, it is conceivable that, compared to another transmission unit—in which the spring force of the first pressure and / or pull element is greater than the spring force of the second pressure and / or pull element—transmission unit 20—in which the spring force of the first pressure and / or pull element 22 is less than the spring force of the second pressure and / or pull element 24—provides a shorter switching displacement, particularly relative to the maximum adjustment displacement 36 of the actuating element 34.

[0057] Figure 6 Shown in another schematic cross-sectional view Figure 1 The machine tool switching device 10. In Figure 6 The diagram shows the control unit 16 in the manipulated switch position. The sliding element 26 has moved to its maximum adjustment displacement 32 and the switch element 28 has been manipulated. The control element 34 has moved to its maximum adjustment displacement 36.

[0058] Figure 7 As shown in the diagram Figure 1A graph 116 illustrates the switching displacement of the operating unit 16 of the machine tool switching device 10 according to the invention. Graph 116 includes, in particular, a horizontal axis 118 and a vertical axis 120. The displacement distance is plotted on the horizontal axis 118, and the spring force is plotted on the vertical axis 120. The displacement distance is directly proportional to the spring force, as shown by line 122. The maximum adjustment displacement 32 of the sliding element 26 is specifically indicated in graph 116. Preferably, the sliding element 26 and / or the transmission unit 20 are configured such that the switching displacement of the operating unit 16, particularly up to the switching point of the electronic device unit 18, corresponds to at most 30% of the maximum adjustment displacement 32 of the sliding element 26. This 30% of the maximum adjustment displacement 32 of the sliding element 26 is specifically indicated by segment 124 in graph 116. In particular, the sliding element 26 and / or the transmission unit 20 are configured such that the switching displacement of the operating unit 16, especially up to the switching point of the electronic device unit 18, corresponds to at most 30%, preferably at most 20%, and particularly preferably at most 10% of the maximum adjustment displacement 32 of the sliding element 26. In particular, the sliding element 26 and / or the transmission unit 20 are configured such that the sliding element 26 operates the switching element 28 of the electronic device unit 18 no later than 30% of the maximum adjustment displacement 32 of the sliding element 26.

[0059] Figure 8 As shown in the diagram Figure 7 Another curve 126 shows the switch displacement. This additional curve 126 specifically includes a horizontal axis 128 and a vertical axis 130. The displacement distance is specifically plotted on the horizontal axis 128. The spring force is specifically plotted on the vertical axis 130. The displacement distance is directly proportional to the spring force, as shown by the additional straight line 132. This additional curve 126 at least substantially corresponds to... Figure 7An enlarged version of graph 116. The maximum adjustment displacement 36 of the actuating element 34 is particularly indicated in another graph 126. Preferably, the transmission unit 20 is configured such that the switching displacement of the actuating unit 16, especially up to the switching point of the electronic device unit 18, corresponds to at most 15% of the maximum adjustment displacement 36 of the actuating element 34. This maximum 15% of the maximum adjustment displacement 36 of the actuating element 34 is particularly indicated by another segment 134 in the other graph 126. Specifically, the transmission unit 20 is configured such that the switching displacement of the actuating unit 16, especially up to the switching point of the electronic device unit 18, corresponds to at most 15%, preferably at most 10%, and particularly preferably at most 5% of the maximum adjustment displacement 36 of the actuating element 34. Specifically, the transmission unit 20 is configured such that the actuating unit 16, especially the sliding element 26, actuates the switching element 28 of the electronic device unit 18 at least after the actuating element 34 has moved 15% of the maximum adjustment displacement 36 of the actuating element 34. Assuming the switching displacement is at most 30% of the maximum adjustment displacement 32 of the sliding element 26 and at most 15% of the maximum adjustment displacement 36 of the actuating element 34, the possible switching displacements of the actuating unit 16 are indicated in particular by the additional segment 136.

[0060] Figure 9 As shown in the diagram Figure 1 The machine tool switching device 10. Preferably, the housing unit 38 defines at least one opening 46 leading to at least one receiving region, particularly the additional receiving region 42, which allows at least one additional operating element 44 of the operating unit 16 to be introduced into the at least one receiving region 42 when the housing unit 38 is closed. Figure 9 The diagram shows the housing unit 38, particularly in its closed state. Specifically, the first housing portion 72, the second housing portion 74, and the third housing portion 76 forming the receiving section 68 are fixed to each other. Preferably, the closed state of the housing unit 38 differs from its state when mounted on the machine tool 14. In particular, when the housing unit 38 is mounted on the machine tool 14, the opening 46 is closed by at least one fixed housing portion of the housing unit 38, particularly the fourth housing portion 78 (see [reference]). Figure 10Preferably, the opening 46 extends transversely to the main extending direction 138 of the additional receiving area 42 into the additional receiving area 42. Preferably, the housing unit 38 may have at least one steering element arranged on, in particular in, the opening 46, against which the additional actuating element 44 can abut (not shown here). Alternatively or additionally, it is conceivable that the housing unit 38 has at least one damping element arranged on, in particular in, the opening 46, which is exemplary made of rubber, and is configured to dampen vibrations of the additional actuating element 44 passing through the housing unit 38, in particular to achieve noise avoidance (not shown here).

[0061] Preferably, the housing unit 38 is at least sectionally constructed with at least one, particularly funnel-shaped, guide region 48 for guiding the additional actuating element 44 to the opening 46. Preferably, the guide region 48 is constructed, particularly defined, by a first housing portion 72 and a third housing portion 76 forming a receiving section 68. Specifically, the first housing portion 72 and the third housing portion 76 have a predetermined shape for the funnel-shaped guide region 48 in the region surrounding the opening 46. Preferably, at least one of the housing portions 72 and 76, particularly the first housing portion 72, gradually narrows in the direction toward the opening 46. Specifically, the first housing portion 72 and the third housing portion 76 form the guide region 48, which tapers in a funnel shape in the direction toward the opening 46.

[0062] Figure 10 As shown in another schematic diagram Figure 1 The machine tool switching device 10. In Figure 10 In particular, the additional actuating element 44 is inserted into the additional receiving area 42. In particular, the fourth housing portion 78 is fixed to the first housing portion 72 and, in particular, closes the opening 46.

Claims

1. A machine tool switching device for electronically controlling at least one electric drive unit (12) of at least one machine tool, the machine tool switching device having at least one mechanical operating unit (16; 16') and at least one electronic device unit (18), the electronic device unit being designed to output at least one signal according to the operation performed by the operating unit (16; 16'), characterized in that, The device includes at least one transmission unit (20; 20') operatively connected to the control unit (16; 16'), the transmission unit being configured to adjust the ratio between the control displacement and the switching displacement of the control unit (16; 16'), the adjustment being performed mechanically. At least one housing unit (38) is provided, the housing unit having at least one receiving area (40, 42), the transmission unit (20; 20') and / or the control unit (16; 16') being arranged in the receiving area, the at least one receiving area (42) being configured to allow at least one additional control element (44) of the control unit (16) to pass through the entire housing unit (38) in a manner unoperatively connected to the electronic device unit (18).

2. The machine tool switching device according to claim 1, characterized in that, The machine tool switch is designed for pushable gardening implements.

3. The machine tool switching device according to claim 1, characterized in that, The electronic device unit is designed to output at least one control signal.

4. The machine tool switching device according to claim 1, characterized in that, The at least one receiving area (40, 42) is at least one receiving channel.

5. The machine tool switching device according to claim 1, characterized in that, The at least one additional actuating element (44) extends through the entire housing unit (38) without a transmission section.

6. The machine tool switching device according to any one of claims 1 to 5, characterized in that, The transmission unit (20; 20') is configured to provide the following switching displacement of the operating unit (16; 16'), which is shorter than the operating displacement of the operating unit (16; 16').

7. The machine tool switching device according to claim 6, characterized in that, The switch displacement is provided until the switch point of the electronic device unit (18) is reached.

8. The machine tool switching device according to any one of claims 1 to 5, characterized in that, The transmission unit (20; 20') includes at least one pressure and / or pull element (22, 24; 22', 24'), which is configured to adjust the switching displacement of the operating unit (16; 16') and / or to return the operating unit (16; 16') to an unoperated initial position.

9. The machine tool switching device according to any one of claims 1 to 5, characterized in that, The operating unit (16; 16') includes at least one sliding element (26; 26') operatively connected to the transmission unit (20; 20') for operating at least one switching element (28, 30) of the electronic device unit (18), wherein the geometry of the sliding element (26; 26') affects the switching displacement of the operating unit (16; 16') relative to the maximum adjustment displacement (32) of the sliding element (26; 26') until the switching point of the electronic device unit (18) is reached.

10. The machine tool switching device according to claim 9, characterized in that, The switching elements (28, 30) are microswitches.

11. The machine tool switching device according to claim 9, characterized in that, The sliding element (26; 26') and / or the transmission unit (20; 20') are configured such that the switching displacement of the operating unit (16; 16') corresponds to a maximum of 30% of the maximum adjustment displacement (32) of the sliding element (26; 26').

12. The machine tool switching device according to claim 11, characterized in that, The switch displacement is provided until the switch point of the electronic device unit (18) is reached.

13. The machine tool switching device according to claim 9, characterized in that, The operating unit (16; 16') includes at least one operating element (34; 34') operatively connected to the transmission unit (20; 20') for operating the sliding element (26; 26'), wherein the switching displacement of the operating unit (16; 16') relative to the operating element (34; 34') of the maximum adjustment displacement (36) depends on the configuration of the transmission unit (20; 20'), and the switching displacement continues until the switching point of the electronic device unit (18) is reached.

14. The machine tool switching device according to claim 13, characterized in that, At least one control element (34; 34') is at least one control cable.

15. The machine tool switching device according to claim 13, characterized in that, The transmission unit (20; 20') is configured such that the switching displacement of the operating unit (16; 16') corresponds to a maximum of 15% of the maximum adjustment displacement (36) of the operating element (34; 34').

16. The machine tool switching device according to claim 15, characterized in that, The switch displacement is provided until the switch point of the electronic device unit (18) is reached.

17. The machine tool switching device according to claim 1, characterized in that, The housing unit (38) defines at least one opening (46) leading to the at least one receiving area (42), the opening allowing at least one additional actuating element (44) of the actuating unit (16) to be introduced into the at least one receiving area (42) when the housing unit (38) is closed.

18. The machine tool switching device according to claim 17, characterized in that, The housing unit (38) at least partially forms at least one guide region (48) for guiding the additional actuating element (44) to the opening (46).

19. The machine tool switching device according to claim 18, characterized in that, The guiding area is a funnel-shaped guiding area.

20. The machine tool switching device according to any one of claims 1 to 5, characterized in that, At least one output unit (50) is provided, the output unit being configured to output at least one switching state and / or charging state of the electronic device unit (18).

21. The machine tool switching device according to claim 20, characterized in that, The output of at least one switching state and / or charging state is performed optically, acoustically, and / or tactilely.

22. The machine tool switching device according to any one of claims 1 to 5, characterized in that, At least one secondary control unit (52) is provided, wherein the electronic device unit (18) is designed to output at least one signal according to the control performed by the control unit (16; 16') and the secondary control unit (52).

23. A machine tool having at least one electric drive unit (12) and at least one machine tool switching device according to any one of the preceding claims, characterized in that, The machine tool switching device is designed for electronic control of the electric drive unit (12).

24. The machine tool according to claim 23, characterized in that, The machine tool in question is a pushable gardening implement.

Images