EP2656362A1

EP2656362A1 - Lockable electric switch

Info

Publication number: EP2656362A1
Application number: EP11782448.2A
Authority: EP
Inventors: Axel Kuhnle; Peter SCHWENKEL
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2010-12-22
Filing date: 2011-11-16
Publication date: 2013-10-30
Anticipated expiration: 2031-11-16
Also published as: WO2012084353A1; RU2603839C2; US9508497B2; RU2013133720A; US20130341169A1; DE102010063962A1; EP2656362B1

Abstract

The invention relates to an electric switch, in particular for an electric power tool, in particular a hammer drill, comprising a first switching device and a second switching device, wherein the first switching device can be adjusted by adjusting a first mechanical signaling means from a first switched state to a second switched state, wherein the second switching device can be adjusted by adjusting a second electrical or mechanical signaling means from a third switched state in which the electric switch acts as a pushbutton into a fourth switched state in which the switch acts as a rocker switch. The invention further relates to an electrical power tool having an electric switch according to the invention.

Description

description

Lockable electrical switch prior art

The present invention relates to an electrical switch, in particular for a power tool, in particular a drill or chipping hammer, comprising a first switching device and a second switching device, wherein the first switching device is adjustable by adjusting a first mechanical signal means from a first switching state to a second switching state , The present invention further relates to a power tool with an electrical switch according to the invention.

For power tool machines, in particular for drill or chipping hammer, it is known to damp the vibrations in the handle by an elastic element between the handle and the tool housing of the power tool. Such manipulations are also referred to as activation handgrips. By the elastic element of the handle is movable relative to the tool housing in the horizontal and / or vertical direction. A power tool with such an elastic element shows the document WO 2008/000543 A1.

Document DE 10 2008 041 51 1 A1 shows a handheld power tool comprising an electrical switch and a mechanical adjusting device arranged on the electrical switch, which is designed here as a rocker switch. The electrical switch can be actuated with the rocker switch. The switching rocker can be locked by means of a locking device in an operating state of the machine. In rotary hammers, for example, the rocker switch is often used to increase user comfort "Chisel operation" can be locked, so that the operator does not have to keep the switch pressed in this operating mode, however, the rocker switch must not be locked in "drilling" or "hammer drill operation" so that the power tool can be switched off as quickly as possible by the operator when tilting the drill and not twisted uncontrollably, and therefore the operator is not injured.

However, the locking function is very difficult to implement in the case of antivibration handles, since an operating mode switch is conventionally arranged on the tool housing and a relative movement of several millimeters can occur between the handle housing and the tool housing. In addition, such a lock requires a mechanical deflection between the operating mode switch and the locking of the rocker switch. And further, such an on and off switch requires considerable space, which is the greater, the more powerful the

Power tool is.

The document DE 100 34 768 A1, for example, discloses a powerful rotary hammer in which the operating mode switch is rigidly coupled to a locking device for a pawl. This rigid

However, coupling does not allow for complete decoupling of the handle housing from the tool housing with respect to the vibrations of a tool housing of the power tool. In addition, required for the coupling of the locking device to the operating mode switch lever mechanism requires considerable space. And also, the locking device is not dust-proof.

DISCLOSURE OF THE INVENTION The object of the present invention is to provide a particularly powerful power tool that is switched on in at least one operating state of the machine without having to permanently actuate an actuating means for driving the power tool, the handle being completely decoupled from the tool housing Anti-vibration handle is formable, and wherein the handle very compact and stable. Another object of the invention is to improve the dust cover for the anti-vibration device.

The object is achieved with an electrical switch, in particular for a power tool, in particular a drill or chipping hammer, comprising a first switching device and a second switching device, wherein the first switching device by adjusting a first mechanical signal means from a first switching state to a second switching state reversible is adjustable, wherein the second switching device is reversibly adjustable by adjusting a second electrical or mechanical signaling means of a third switching state in which the electrical switch acts as a button, in a fourth switching state in which it acts as a rocker switch. When a button according to the invention, the electrical switch automatically returns from the second switching state in the first switching state. It is preferred that the electrical switch is adjusted against the restoring force of a first force means from the first switching state to the second switching state, so that it is automatically reset by means of the restoring force of the first force means.

In a rocker switch according to the invention, the electrical switch does not return automatically from the second switching state to the first switching state, but remains in the second switching state.

The switch according to the invention is in the fourth switching state in which it acts as a rocker switch, therefore preferably either locked or at least lockable. In the context of FIGS. 1-6, the fourth switching state is therefore referred to as a locking state.

The electrical switch is therefore self-lockable or locked. An inventive electrical switch is compared to a conventional device in which a mechanical actuator for actuating a conventional electric switch by means of a separate locking device can be locked, significantly more compact buildable and thus allows a much more flexible placement in a power tool machine, as well as due to the space not required a more compact design of the power tool.

It is preferable that the second switching state is a turn-on state in which the electric switch closes a circuit, in particular a motor circuit for driving the electric machine tool, and that the first switching state is a turn-off state in which the circuit is opened. Depending on the application, however, an embodiment is also preferred in which the first switching state is the switch-on state and the second switch state is the switch-off state, so that the electrical switch automatically returns from the switch-off state to the switch-on state.

It is further preferred that the electrical switch is adjusted against the restoring force of a second force means from the third switching state to the locking state, so that it is set back by means of the restoring force of the second power means from the locking state to the third switching state. Depending on the application, however, an embodiment is preferred in which the electrical switch is adjusted against the restoring force of the second force means from the locking state to the third switching state, so that it is set by means of the restoring force of the second power means from the third switching state back to the locked state.

In a particularly preferred embodiment, the electric switch is moved against the restoring force of the second force means from the third switching state to the locking state, wherein it is adjusted against the force of the first power means from the off state to the on state. In this preferred embodiment, the third switching state is a ground state of the electric switch, and the electric switch can be used, for example, as a motor switch for driving the electric machine tool.

Preferably, the first switching device comprises an electrical contact and electrical connections for closing the circuit. The electrical contact is preferably provided in order not to connect the electrical connections in the off state, so that the circuit is opened is, and to connect the electrical connections in the on state, so that the circuit is closed.

It is further preferred that the electrical switch comprises a housing. It is particularly preferred that only the first and second signaling means and the electrical connections are partially disposed outside of the housing so that they are accessible from the outside. As a result, the switch is protected against external influences such as the ingress of dust and moisture. Advantageously, the switch of this embodiment is pre-manufacturable as a single modular component, so that it can be stored cost-effectively and can be used for power tool machines of various types.

In a preferred embodiment, the first switching device further comprises a first adjusting means, which cooperates with the first signal means, wherein the electrical contact is adjustable by means of the first adjusting means. When adjusting the first signal means, the first adjusting means is adjusted, so that the electrical contact is moved from the off state to the on state or reset. The first adjusting means is preferably provided as a pushing means or as a rotating means.

In a further preferred embodiment, the second comprises

Switching device, a second adjusting means which interacts with the second signal means, wherein the first signal means and / or the first

Adjusting means by means of the second actuating means in the locked state can be locked or locked. When adjusting the second signal means therefore the second adjusting means is preferably adjusted so that it prevents the movement of the first signal means and / or the first actuating means. The second adjusting means is also preferably provided as a pushing means or a rotating means.

In this preferred embodiment, the first signal medium and / or the first actuating means can be locked in the switched-off state by adjusting the second actuating means and locked in the switched-on state. Furthermore, in this preferred embodiment, the first signaling means and / or the first adjusting means in the ground state can not be locked or locked by means of the second actuating means. The electrical switch remains in this embodiment, therefore, only in the locked state in the on state. In any other state it is either in the off state or automatically returns to the off state. A persistence in the on state must therefore be set by the operator targeted at the switch. This embodiment ensures the greatest possible security against accidental switching on of the circuit.

The first signal means is preferably operable with a first actuating means, and the second signal means also preferably with a second actuating means operable. The first and second signaling means therefore represent the interface through which the electrical switch can be actuated and switched to its various switching states.

In a preferred embodiment, the first signal medium and / or the first actuating means and / or the first actuating means are mechanically provided. In this embodiment, the first signal means preferably by means of the first actuating means operable, in particular rotatable or displaceable, wherein the first actuating means by means of the first signal means from the off position to the on or back position is adjustable, in particular twisted or displaceable. It is particularly preferred that the first signal means is designed as an angle lever, wherein the first adjusting means is preferably designed as a sliding means, and wherein the first actuating means is preferably designed as a rocker switch. Then, the angle lever is preferably actuated by means of the rocker switch, in particular rotatable, wherein the sliding means by means of the angle lever from the off position to the on position or back is displaceable.

The switching rocker is preferably rotatably mounted on the switch housing of the electrical switch. In this embodiment, the rocker preferably on a first rocker switch part and a second rocker switch part, wherein the electrical switch is adjustable by operating the first rocker switch part in the on state, and by operating the second rocker switch part in the off state. In a further preferred embodiment, the second signal means and / or the second actuating means and / or the second actuating means are provided mechanically. In this embodiment, the second signal means is preferably actuated by means of the second actuating means, in particular rotatable or displaceable, wherein the second actuating means by means of the second signal means from the off position to the on position or back adjustable, in particular rotatable or displaceable is. It is particularly preferred that the second signal means is designed as a shift lever, wherein the second adjusting means is preferably designed as a locking pawl, and wherein the second actuating means is preferably formed as a switching connection, in particular as a traction means or as a Bowden train. Then, the shift lever is preferably actuated by means of the switch connection, in particular rotatable, wherein the locking pawl by means of the angle lever from the basic position to the locking position or back is rotatable.

The locking pawl is preferably mounted on the shift lever, and cooperates with the sliding means in the locked state. For this purpose, the sliding means also preferably has a blocking means, which rests against the locking pawl in the locking state, so that the sliding means is locked in the switched-on state and can no longer be displaced. As a result, an automatic reset of the sliding means, and thus also of the angle lever, by means of the restoring force of the first power means is not possible.

It is also preferred that the second signal means and / or the second actuating means and / or the second actuating means are provided electrically, electronically or electromagnetically. Then, the second signal means is preferably a tip signal, which is triggered, for example, by repeated pressing or another signal triggered by the operator, in particular, for example, an electrically provided operating mode switch of the power tool. In this embodiment, the adjustment of the second actuating means preferably also takes place electrically, for example by means of a relay. In principle, an embodiment is also possible in which the first signal medium and / or the first adjusting means and / or the first actuating means are electrically provided.

The object is also achieved with a power tool, in particular a drill or chisel, with an electrical switch according to the invention.

Since the electric switch according to the invention, regardless of the power of the electric machine tool is much more compact to produce, more space is available either in the power tool, or this is also compact buildable.

In a preferred embodiment, the electrical switch and the first actuating means are arranged in a handle housing, in particular in an anti-vibration handle housing, wherein the power tool comprises an operating mode switch for adjusting the second actuating means, which is arranged in a tool housing.

In this embodiment, the handle housing of the power tool is made more compact, so that the handling of the power tool is easier.

In the following the invention will be described with reference to figures. The figures are merely exemplary and do not limit the general idea of the invention.

1 shows a power tool with a handle housing, which is designed as an anti-vibration handle housing, wherein the power tool comprises an electrical switch according to the invention,

FIG. 2 shows a detail of the power tool of FIG. 1, in (a) in a perspective view and in (b) in a side view, FIG. 3 shows in FIGS. 3 (a) - (c) the electrical switch of the electric machine tool according to the invention of FIG. 1, wherein the electrical switch comprises a first switching device and a second switching device, and wherein the first switching device in the off state and the second switching device are in the ground state,

Fig. 4 shows in Figs. 4 (a) - (c) the electrical switch of

3, wherein the first switching device in the on state and the second switching device in the ground state,

Fig. 5 shows in Figs. 5 (a) - (c) the electrical switch of

3, wherein the first switching device in the off state and the second switching device are in the locked state,

FIG. 6 shows in FIGS. 6 (a) - (c) the electrical switch of FIG

Fig. 3, wherein the first switching device in the on state and the second switching device are in the locked state.

Fig. 1 shows a power tool 1 according to the invention with a handle housing 3, which is designed as an anti-vibration handle housing.

The handle housing 3 is supported by a leaf spring 7 on a tool housing 2. In this case, the leaf spring 7 has a first end (not visible) and a second end 72, wherein it is connected with its first end fixed to the tool housing 2. At the second end

72 of the leaf spring 7, the handle housing 3 is supported on its upper side

73, so that the handle housing 3 can deflect in the horizontal and in the vertical direction. As a result, a relative movement of several millimeters between the tool housing 2 and the handle housing 3 is possible. Between the tool housing 2 and the handle housing se 3, a Faltbalgelement 21 is provided so that this relative movement between the tool housing 2 and the handle housing 3 is possible without damaging the tool housing 2 or the handle housing 3.

In the handle housing 3, a handle shell 31 is releasably inserted, so that arranged in the handle housing 3 machine components are accessible from the outside.

The electric machine tool 1 of this embodiment is a hammer drill which can be adjusted to the operating states "drilling", "hammer drilling" and "chiselling" by means of an operating mode switch 41. The terms power tool 1 and hammer drill are used synonymously in the context of FIGS By means of the operating mode switch 41, a slide 42 is displaceable in or against a displacement direction 43, whereby the slide 42 is displaced against the force of a compression spring 44, which is supported on the tool housing 2.

On the slider 42, a first end 61 of a second actuating means 6, which is designed here as a band set. In the context of FIGS. 1 to 6, the terms second actuating means 6 and band are used synonymously. In the present embodiment, the first end 61 is suspended under bias of a spring 63. However, embodiments are also preferred in which the band 6 is firmly connected to the slider 42, for example by screwing or clipping. Alternatively, the provision of a Bowden cable (not shown) instead of the band 6 is possible here.

A second end 62 of the band 6 is fixed to a hook 531 of a second signal means 53 of a second switching device 5 (see Fig. 3 - 6) of an electrical switch 800, so that the connection of the operating mode switch 41 via the belt 6 directly to the second Signal medium 53 takes place. The second signal means 53 is designed here as a shift lever. In the context of FIGS. 1 to 6, the terms second signal means 53 and shift lever are used synonymously. And that is the second end 62 here in Hook 531 hooked. However, it is also preferable to firmly connect the second end 62 with the second switching device 5.

The operation mode switch 41 is therefore mechanically connected to the second switching device 5 via the belt 6.

At the electrical switch 800, a first actuating means 9, which is designed here as a rocker switch, arranged. In the context of FIGS. 1 to 6, the terms first actuating means 9 and switching rocker are used interchangeably. The switching rocker 9 is rotatably mounted on the switch housing of the electrical switch 800. It has a first rocker switch part 91 and a second rocker switch part 92. By actuating the first rocker switch part 91, a first switching device 8 of the electrical switch 800 can be adjusted from a first switching state A to a second switching state E. In the present exemplary embodiment, the electrical switch 800 is provided as the operating switch of the power tool 1. In the context of FIGS. 1 to 6, therefore, the terms electrical switch 800 and operating switch are used synonymously. Here, since the electric switch 800 is the operation switch of the electric machine tool 1, the first switching state A is provided as the off state in which the power tool 1 is turned off, the second switching state E being the on state E in which the power tool 1 is turned on. In the context of FIGS. 1 to 6, the terms first switching state A and switch-off state as well as second switching state E and switch-on state are used interchangeably.

When the operation mode switch 41 is changed from the "drilling operation" or the "hammer drill operation" to the "chiseling operation" mode, the slider 42 is displaced in the shift direction 43 by means of a cam contour (not shown) of the operation mode switch 41. As a result, the slider 42 pulls on the belt 6 so that the second switching device 5 from a third switching state G against a restoring force, which is here represented by an arrow 58, is adjusted by means of the shift lever 53 in a fourth switching state AR. In "drilling operation" or "hammer drill operation", an operating switch 800 of a hammer drill 1 must not be lockable, so that it does not rotate uncontrollably when the drill bit is tilted, so that the operator of the hammer drill is protected. In the "drilling operation" or "hammer drill operation", the operating switch 800 must therefore necessarily be designed as a push button. In contrast, in the "chisel mode" it is preferred that the operating switch 800 can be locked in. In this operating state, it is therefore preferable for the operating switch 800 to act as a rocker switch.

Therefore, the operation switch 800 is provided here so that the third switching state G is a ground state in which the operation switch 800 is not lockable or locked, and which is set when the hammer drill 1 is in "drilling operation" or "hammer drill operation". Furthermore, the operating switch 800 is provided here so that the fourth switching state AR is a locking state in which the operating switch 800 can be locked or locked, and which is set when the hammer drill 1 is in "chiseling operation." In the context of FIG Therefore, the terms third switching state G and ground state as well as fourth switching state AR and locking state are used interchangeably.

When pressed first rocker switch part 91 of the operating switch 800 is thus locked in the locked state when the hammer drill 1 is turned on. Then, the operating switch 800 is indeed adjustable by pressing the second rocker switch part 92 from the on state E to the off state A, wherein the hammer drill 1 is turned off. But the operation switch 800 then remains in the locked state AR, so that it is still lockable.

When resetting the operating mode switch 41 from the "chiseling" operating state to the "drilling operation" or "hammering operation", the slide 42 is displaced against the displacement direction 43 by means of the compression spring 44. Since the belt 6 is long-lasting, it follows the sliding movement of the slide 42. so that the hook 531 is reset, with the second switching device 5 being reset so that the operating switch 800 is moved from the locking position AR into the basic position G. is reset. In this case, the second switching device 5 is reset by means of the restoring force 58 in the basic position G.

The operating switch 800 and the rocker switch 9 are accessible by loosening and removing the handle shell 31 from the outside.

FIG. 2 shows a detail of the power tool 1 of FIG. 1, in (a) in a perspective view and in (b) in a side view. 2 shows that the operating switch 800 ports 82 for connecting a circuit (not shown), here the motor circuit, are provided. The terminals 82 are provided at least partially outside a switch housing 80 of the operation switch 800. In addition, it is visible here that the shift lever 53 and a first signal means 85, which is designed here as an angle lever and cooperates with the rocker switch 9, are also provided at least partially outside of the housing 80 so that they are accessible from the outside. The operating switch 800 is, however, arranged inside the switch housing 80 and thus protected from dust and moisture. In addition, the electric switch 800 of this embodiment can be used as a modular component in a variety of power tool machines 1. And finally, the handling of a protected by a switch housing 80 component is easy.

In the context of FIGS. 2-6, the terms first signal means 85 and angle lever are used synonymously.

Fig. 3 shows in Figs. 3 (a) - (c) the operating switch 800 of the hammer drill 1 of FIG. 1 and the rocker switch 9, wherein the first switching device 8 of the operating switch 800 in the off state A and the second switching device 5 in the ground state G are located.

The first switching device 8 here comprises two electrical contacts 83 and electrical connections 82 for closing the motor circuit. Furthermore, it comprises a first adjusting means 81, which cooperates with the angle lever 85. By actuating the rocker switch 9, the angle lever 85, which is mounted on the switch housing 80 of the operating switch 800, is rotatable about an angle lever axis 850. For this purpose, it has an end 851 facing the switching rocker 9 and an end 852 facing the operating switch 800. At its the rocker switch 9 facing the end 851, a fastening means 859 is provided, on which the rocker switch 9 is rotatably mounted. The fastening means 859 is designed here as a slot, wherein on the switching rocker 9, a counter-fastening means 99 is provided, which is formed here as a arranged on the rocker switch 9 connecting pin. In principle, however, another rotary or sliding connection is possible.

At its the operating switch 800 facing the end 852 of the angle lever 85 is formed like a tooth. In the context of FIGS. 3-6, the tusk-like end 852 of the angle lever facing the operating switch 800 is referred to as a tusk. The tusk 852 has an end 853 facing the second switching device 5 and an end 854 facing away from the second switching device 5. The end 854 facing away from the second switching device 5 abuts against a bearing means 81 1 of the first actuating means 81. The first adjusting means 81 is designed here as a sliding means. In the context of FIGS. 3 to 6, therefore, the terms first actuating means 81 and sliding means are used interchangeably. Instead of a sliding means, however, the first adjusting means 81 can also be embodied as a rotating means.

The pushing means 81 is slidable against the force of a first power means (not shown).

By actuating the first rocker switch part 91, the rocker switch 9 is rotated about a rocker switch axis 90 in an actuating direction 907.

In this case, the angle lever 85 is rotated about the angle lever axis 850 in a Winkelhebelrichtung 857. As a result, the sliding means 81 is displaced in the sliding direction 84, wherein the electrical contacts 83 are also displaced in the sliding direction 84 until they abut against the electrical connections 82 and connect them, so that the motor Circuit is closed. As a result, the operating switch 800 is moved from the switch-off position A to the switch-on position E.

Fig. 4 shows in Figs. 4 (a) - (c) the operation switch 800 of Fig. 3, wherein the first switching device 8 of the operation switch 800 in the on state E and the second switching device 5 are in the ground state G.

Due to the restoring force of the first force means, the sliding means 81 is displaced in the ground state G when releasing the rocker switch 9 against the sliding direction 84, wherein the electrical contacts 83 are moved against the sliding direction 84, so that they are pushed away from the electrical terminals 82 and the motor circuit opened becomes. In this case, the switching rocker 9 facing away from part 854 of the angle lever 85 is moved by means of the abutment means 81 1 of the sliding means 81 against the sliding direction 84, wherein the angle lever 85 is rotated against the angle lever 857 direction, and wherein the rocker switch 9 is rotated against the actuating direction 907. Thereby, the operation switch 800 is returned from the switch-on position E to the switch-off position A.

In the synopsis of Figs. 3 and 4 it can be seen that the angle lever 85 when adjusting the first switching device 8 from the OFF state A in the ON state E and back freely rotatable about the Winkelhebeleldrehachse 85 when the second switching device 5 is in the ground state G. In the basic state G, the operating switch 800 can therefore be locked or locked neither in the switch-on state E nor in the switch-off state A.

In the embodiment shown here, the operating switch 800 therefore always acts in the basic state G like a push-button.

Fig. 5 shows in Figs. 5 (a) - (c) the operation switch 800 of Fig. 3, wherein the first switching device 8 of the operation switch 800 in the off state A and the second switching device 5 are in the locked state AR. The second switching device 5 comprises a second adjusting means 54, which is designed here as a locking pawl and is rotatably mounted on the shift lever 53 about a locking pawl axis 540. In the context of FIGS. 3 to 6, the terms second actuating means 54 and locking pawl are used synonymously.

The shift lever 53 is rotatably mounted on the switch housing 80 of the operation switch 800 about a shift lever axis 530. When adjusting the operating mode of the "drilling operation" or "hammer drill operation" in the "chisel operation", the second switching device 5 is moved from the ground state G in the locked state AR by the shift lever 53 in a Schalthebeleldreirichtung 537 against the force 58 of the second power means 56, which here is formed as a compression spring, is rotated about the shift lever axis 530. Since the locking pawl 54 is mounted on the shift lever 53, it is rotated by the shift lever 53.

At the locking pawl 54, a lifting means 52 is arranged, which is designed here as a mandrel. In the context of FIGS. 3 to 6, the terms lifting means 52 and mandrel are used synonymously. The mandrel 52 is disposed on the tusk 852 side facing the locking pawl 54. On its side facing away from the tusk 852, the locking pawl 54 is pressed against the shift lever 53 by means of a compression spring 55.

When the second switching device 5 is moved from the basic state G into the locked state AR, the locking pawl 54 is rotated with the shift lever 53 until the spike 52 is arranged in the arcuate region of the tusk 852 in the switched-off state A of the first switching device 8.

When adjusting the first switching device 8 from the OFF state A in the ON state E, the angle lever 85 is rotated about the bell crank shaft 85 in the Winkelhebelrichtung 857, wherein the tusk 852 is rotated in the Winkelhebelrichtung 857 and due to its curved shape along the mandrel 52 slides, without being hindered by this, until the locking pawl 54 with one of the first switching device. 8 facing end surface 541 (see Fig. 4 (b), (c)) to a locking means 812 of the first switching device 8 is applied. The compression spring 55 presses the end face 541 of the locking pawl 54 against the locking means 812 of the switching slide 81. In this locking state AR, the slide switch 81 is not pushed back against the sliding direction 84 by the force of the first force means.

Fig. 6 shows in Figs. 6 (a) - (c) the operation switch 800 of Fig. 3, wherein the first switching device 8 of the operating switch 800 in the on state E and the second switching device 5 are in the locked state AR.

When releasing the rocker switch 9, the sliding means 81 is pressed or pulled against the sliding direction 84 due to the restoring force of the first power means. Since the abutment means 81 1 of the sliding means 81 abuts against the second switching device 5 opposite end 854 of the tusk 852, while the angle lever 85 is pushed back. However, since the end surface 541 of the locking pawl is applied to the locking means 812 of the first switching device 8, the pushing means 81 can not be pushed back against the sliding direction 84. At the same time, the tusk 852 of the angle lever 85 now bears with its end 853 facing the second switching device 5 on the mandrel 52, so that it can not be turned back.

By pressing the second rocker switch part 92, however, the angle lever 85 is rotated with sufficient force by the operator to the angle lever axis 850 against the angle lever 857 direction. In this case, the second switching device 5 facing end 853 of the tusk 852 lifts the lifting means 52, so that the locking pawl 54 rotates about the locking pawl axis 540 in a release direction and the end face 541 of the locking pawl 54 is lifted from the locking means 812. The compression spring 55 is first compressed against its restoring force. Then, the lifting means 52 slides along the tusk 852 until it is again in the arcuate portion of the tusk 852 in the OFF state A of the first switching device 8, wherein the compression spring 55 at least partially relaxes. Due to the restoring force of the first force means, the sliding means 81 is displaced against the sliding direction 84, so that the motor circuit is opened. In this case, the switching rocker 9 facing away from part 854 of the angle lever 85 is moved by means of the abutment means 81 1 of the sliding means 81 against the sliding direction 84, wherein the angle lever 85 is rotated against the angle lever 857 direction. Thereby, the operation switch 800 is returned from the switch-on position E to the switch-off position A.

The first switching device 8 of the operating switch 800 is then again in the off state A, wherein the second switching device 5 is in the locked state AR (see Fig. 5).

In the locked state AR, the operation switch 800 is therefore lockable in the OFF state A, by being adjusted to the ON state E. In the on state E, however, he is locked by means of the second switching device 5. The operation switch 800 therefore acts in the locked state AR as a rocker switch.

In addition, the operating switch 800 is only in the locked state AR by operating the second rocker switch part 92 from the ON state E in the OFF state A adjustable. In the basic state G, in which the operating switch 800 acts as a push-button, the switching rocker 9, on the other hand, is automatically turned back against the actuating direction 907 when the first switching device 8 is reset (see Fig. 4).

Upon return of the operating switch from "chiseling" to "drilling" or "jackhammer operation", the shift lever 53 is rotated about the shift lever axis 530 against the shift lever direction 537 due to the restoring force of the second power means 56, returning the belt 6 Shift lever 53 is mounted, it is rotated together with the shift lever 53. In this case, the end face 541 of the locking pawl 54 is rotated about the locking pawl axis 540, wherein it rotates away from the locking means 812 of the sliding means 81, regardless of whether the first switching device 8 is in the on state E or in the off state A. Starting from the ON state E is caused by the turning away of the end face 541 that the sliding means 81 is moved due to the restoring force of the first power means against the sliding direction 84, wherein the angle lever 85 is rotated against the Winkelhebelrichtung 857, wherein the rocker switch 9 is rotated against the Schalttwippenrichtung 907 is, and wherein the first switching device 8 is moved to the off state A. The second switching device 5 is then in the ground state G.

Claims

claims

1 . Electric switch (800), in particular for a power tool machine (1), in particular a hammer drill, which comprises a first switching device (8) and a second switching device (5), wherein the first switching device (8) is adjusted by adjusting a first mechanical signal means (8). 51) is reversibly adjustable from a first switching state (E) to a second switching state (A),

characterized in that

the second switching device (5) by reversing a second electrical or mechanical signal means (53) from a third switching state (G) in which it acts as a button, in a fourth switching state (AR), in which it acts as a rocker switch is reversibly adjustable ,

2. Electrical switch (800) according to claim 1, characterized in that the first switching state (E) is a switch-on, in which the electrical switch (800) includes a circuit, in particular a motor circuit for driving the power tool (1), and the second switching state (A) is an off state in which the circuit is open.

3. Electrical switch (800) according to one of the preceding claims, characterized in that the first switching device (8) comprises an electrical contact (83) and electrical connections (82) for closing the circuit.

4. Electrical switch (800) according to one of the preceding claims, characterized in that the first switching device (8) comprises a first adjusting means (81) which cooperates with the first signal means (85), wherein the electrical contact (83) by means of first adjusting means (81) is adjustable.

5. Electrical switch (800) according to one of the preceding claims, characterized in that the second switching device (5) comprises a second adjusting means (54) which cooperates with the second signal means (53).

6. Electrical switch (800) according to one of the preceding claims, characterized in that the third switching state (G) is a ground state in which the first signal means (85) and / or the first actuating means (81) not by means of the second actuating means ( 54) can be locked or locked.

7. Electrical switch (800) according to one of the preceding claims, characterized in that the fourth switching state (AR) is a locking state of the electrical switch (800) in which the first signal means (85) and / or the first adjusting means (81) be locked by the second actuating means (54) when the first actuator (8) in the off state (A), and are locked when the first actuator (8) in the on state (E).

8. Electrical switch (800) according to one of the preceding claims, characterized in that the first switching device (8) against the force of a first power means from the off state (A) in the on state (E) is adjustable, and that the second switching device (5 ) is adjustable against the force of a second force means (56) from the ground state (G) in the locking state (AR).

9. Electrical switch (800) according to one of the preceding claims, characterized in that the first signal means (85) with a first actuating means (9), and the second signal means (53) with a second actuating means (6) are actuated.

10. Electrical switch (800) according to one of the preceding claims, characterized in that the second adjusting means (54) and / or the second actuating means (6) are mechanically or electrically formed.

1 1. Electric switch (800) according to one of the preceding claims, characterized in that it comprises a housing (80).

12. Power tool (1), in particular hammer drill, with an electrical switch (800) according to one of the preceding claims.

13. Power tool (1) according to any one of claims 13-14, characterized in that the electrical switch (800) and the first actuating means (9) in a handle housing (3), in particular in an anti-vibration handle housing, are arranged, wherein the power tool ( 1) comprises an operating mode switch (41) for adjusting the second actuating means (6), which is arranged in a tool housing (2).