EP3808509A1 - Switching device for an electric tool - Google Patents

Abstract

The present invention relates to a switching system for a power tool, the switching system having a switching element (1) as an actuating element, the switching element (1) being movably arranged in a handle (2) of the power tool, the switching system having a first guide element (3) and comprises a second guide element (4), the guide elements (3, 4) being connected to one another via a spacer element (5), the guide elements (3, 4) being rotatably mounted in the handle (2) of the power tool and the guide elements ( 3, 4) are connected to the switching element (1), the switching element (1) being connected to a connecting element (7) via a first connecting means (6), so that the connecting element (7) when the switching element (1) is actuated a Switching device (8) actuated, wherein the switching device (8) can be arranged in a housing (9) of the power tool

Description

The present invention relates to a switching system for an electric tool, the switching system having a switching element as an actuating element, the switching element being arranged movably in a handle of the electric tool. In a second aspect, the invention relates to a power tool, the power tool having a proposed switching system.

Background of the invention:

In current power tools, it is known to provide switching devices in the area of a handle of the device. However, it has been shown that there is usually little space available for attaching switching devices in the grip area of the power tools. In particular, only a limited positioning area is available for the switching device in the grip area of the power tool. This can disadvantageously be associated with a large degree of encompassing. This means that it can be difficult, especially for people with small hands and hand spans, to grip and guide the power tool safely, which on the one hand can lead to safety risks when operating the power tool and on the other hand can be unfavorable for ergonomic reasons.

Another technical challenge that arises when switching devices are used in power tools is the sensitivity of the switching devices to dust, in particular during linear movements of the switching element of the switching device. These linear movements are used, for example, when actuating a switching device in order to transfer the switching element of the switching device from a first position to a second position. For example, the power tool can be switched on or off by actuating the switching device. In this case, for example, a first position of the switching element of the switching device can correspond to an “off state” of the power tool, wherein a second position of the switching element of the switching device can correspond to an “on or on state” of the power tool. For example, switching devices are known in the prior art in which the switching device is actuated by a guide element. In these conventional switching devices, the lock in the housing of the power tool is released by a linear movement, which is sensitive to dust.

The object of the present invention is to overcome the disadvantages and deficiencies of the prior art described above and to provide a switching system for a power tool and a power tool with an improved switching system, wherein a switching element of the switching system to be provided can be flexibly arranged in the grip area of the power tool and the is particularly resistant to the effects of dust. In addition, it is a concern of the invention to relocate current-carrying components, such as strands, from the handle of the power tool into the interior of the power tool, since these electrical components are arranged in the housing of the power tool in a closed space and are therefore better protected from environmental influences, such as dust or moisture. In particular, the switching system to be provided should enable a slim, easily encompassing handle to be constructed for the power tool, which can also be easily grasped by people with small hands with small spans.

The object is achieved by the subject matter of the independent claims. Advantageous embodiments relating to the subject matter of the independent claims can be found in the dependent subclaims.

Description of the invention:

The object is achieved by a switching system for an electric tool, the switching system having a switching element as an actuating element, the switching element being arranged movably in a handle of the electric tool. The switching system is characterized in that it comprises a first and a second guide element which a) are connected to one another via a spacer element, b) are rotatably mounted in the handle of the power tool and c) are connected to the switching element, the switching element via a The first connecting means is connected to a connecting element, so that the connecting element actuates a switching device when the switching element is actuated, the switching device being arranged in a housing of the power tool.

In the context of the invention, it is particularly preferred that the switching device is arranged in an interior of the power tool formed by the housing of the power tool. The housing of the power tool preferably encloses a substantially closed interior space of the power tool, in which the switching device of the switching system is present and is thereby particularly effectively protected from dust and other environmental influences, such as moisture, for example. In particular, the design of the switching system with the switching element in the handle and the switching device in the interior of the power tool provides a switching system that is particularly ergonomic and with a Hand grip can be fitted with a well-enclosing handle. The proposed switching system differs from the prior art in that the switching device itself no longer has to be present in the handle of the power tool. As a result, a particularly slim handle can be constructed which enables the power tool to be operated more easily, in particular for people who have small hands with a narrow hand span.

As a guide element, the switching device preferably has a coupled guide for the switching element, the term “coupled guide” denoting in particular the two guide elements connected via the spacer element. In the context of the invention, it can be preferred that the connecting element is connected to the switching element and / or the coupled guide, i.e. the guide elements.

It has been found that with the configuration of a switching system according to the present invention, the dust sensitivity of the switching system can be significantly reduced compared to conventional switching devices. This is due in particular to the fact that a lock in the switching system is released with a rotary movement, tests having shown that the rotary movements are significantly more robust against the effects of dust than conventional switches, as are known from the prior art, in which the lock is released by a dust-prone linear movement.

The lock is preferably set up to prevent the power tool from being switched on unintentionally. In particular, it is used in Fig. 3 shown and is preferably rotatably arranged in the power tool. It is particularly preferred in the context of the invention that it is part of the proposed switching system. It can be arranged, for example, in the switching element. The lock is preferably actuated by a sideways movement of a finger of a user. In particular, it can be a sideways movement of a finger on the switching element of the power tool or the switching system, it being particularly preferred in the context of the invention that the sideways movement causes a rotational or turning movement. Unintentional actuation of the switching element of the switching system is preferably effectively prevented in that a spring is provided which is designed to align the lock in a rest position essentially perpendicular to the switching element. The spring can preferably be a torsion spring. The actuation of the switching element is preferably prevented by the fact that in its rest position when the switching element is actuated, the lock encounters a locking element which, for example, as a nose or protruding element in the housing of the handle of the Power tool can be present. It is preferred within the meaning of the invention that the rest position of the lock is characterized in that the lock is pretensioned on both sides by the spring, this rest position only being able to be left by the rotational or turning movement consciously brought about by the user of the power tool. Preferably, in the context of the invention, bilateral pretensioning of the lock in the rest position is also used.

Furthermore, the lock can be in a release position in which the lock is present in an angular range between 20 and 40 ° degrees, particularly preferably in an angular range between 25 and 35 ° degrees and most preferably in an angular range around 30 ° degrees. In other words, it can be preferred in the sense of the invention that the lock can be in a rest position and in a release position, with a position of the lock in the rest position and in the release position around an angular range of 20 to 40 ° degrees, particularly preferably around an angular range of 25 to 35 ° degrees and most preferably is rotated by an angular range of about 30 ° degrees. This means that the rest and the release position differ by an angle of 20-40 ° degrees, preferably 25-35 ° degrees and particularly preferably 30 ° degrees, which can be a shift in the positive or negative angle range . In other words, the lock can be rotated in the release position by preferably approximately 30 degrees to the left or to the right. In the release position, the lock can preferably pass the locking element laterally, whereby the switching element can be switched to the on or on state.

In order to prevent the lock from unintentionally passing the locking element, the preferably nose-shaped locking element can, for example, be concave in a central area, while the lock is preferably convex on the side opposite the locking element. As a result, the lock and the locking element only slide or slide past one another when they are intentionally actuated. It is preferred within the meaning of the invention that the radius of the concave curvature of the locking element or the convex curvature of the lock is smaller than a radius on which an outer contour of the lock moves.

In addition, it has been shown that the switching system, in particular in the handle area of the power tool, can be designed to be particularly space-saving, so that the switching system can be arranged in a particularly variable manner in the area of the handle of a power tool. In particular, the invention enables an essentially free positioning range of the proposed switching system.

It represents a significant advantage of the proposed switching system that its switching device can be arranged outside the grip area of the power tool, so that the invention can advantageously provide a small encompassing dimension for the handle of the power tool. It is preferred in the context of the invention that the switching device can also be referred to as a switch.

The switching system according to the invention has a switching element. In the context of the invention, it is preferred to designate the switching element of the switching device as an actuating element which can preferably change its position. This is preferably the part of the switching system that is visible to a user of the power tool and that is touched, i.e. actuated, by the user in order to change a position of the switching element or a switching state of the proposed switching system. In particular, the switching element of the proposed switching system is elongated and can be integrated into the handle of the power tool. The switching element of the proposed switching system is preferably designed to be movable up and down in the handle of the power tool. In particular, the switching element can be pressed into the handle when it is actuated by a user of the power tool. As will be explained later, this actuation of the switching element in the context of the present invention preferably corresponds to an upward movement. When the switching element is released or released again by the user, the switching element preferably moves out of the handle of the power tool again. This movement preferably corresponds to a movement "downwards" in the spatial direction.

The switching element is preferably located in the handle of the power tool, preferably in the hollow interior of the handle. The outer walls of the handle run essentially parallel to one another and the switching element can in particular be arranged oriented essentially parallel to the outer walls of the handle. It is preferred in the context of the invention that the lock is pushed to the side before the actuation of the switching element. As a result, the switching element is preferably released and the power tool can be switched on by moving the switching element upwards. The upward pushing of the switching element preferably causes a rotation of the coupled guide or the guide elements in the handle of the power tool. It is preferred in the context of the invention that the spacer element ensures in this situation that the guide elements rotate synchronously. This achieves a particular advantage of the invention in that the switching element remains aligned essentially parallel with respect to the handle of the power tool or its outer walls. In the context of the invention, it is preferred that the first connecting means have this essentially parallel upward movement of the switching element onto the connecting element transmits inside the power tool, so that the switching device of the switching system can be operated inside the electrical device.

The switching system comprises a first and a second guide element, which together advantageously enable coupled guidance of the switching element. The two guide elements are connected to one another via a spacer element, wherein the spacer element is preferably designed like a bracket and wherein side elements of the spacer element interact with feed-through openings in the guide elements in order to establish a connection between guide elements and spacer element. In the context of the invention, it is preferred that the spacer element for connecting the guide elements interacts with a respective passage opening of the first and the second guide element. The guide elements are also rotatably mounted in the handle of the power tool. The inside of the handle of the power tool is preferably designed to be essentially hollow, with the entirety of the outer walls of the handle preferably being referred to as the housing of the handle or as the handle housing. For this purpose, pins or other connecting means are provided in feed-through openings of the guide elements, which can be rotatably mounted in the handle housing and thus enable the guide elements to be rotated within the hollow handle of the power tool formed by the housing. The handle housing preferably has openings for receiving the pins or the other connecting means, the position and location of these handle housing openings corresponding to the feed-through openings of the guide elements. As will be explained below, it is preferably the lower feed-through openings of the guide elements which enable the guide elements to be rotatably supported within the handle of the power tool.

Furthermore, the guide elements are connected to the switching element. The left through-opening of the first guide element can, for example, receive a pin, so that the first guide element is movably supported by the interaction of pin and switching element in relation to the switching element in the interior of the handle housing. For this purpose, the pin, which is preferably located in the left lead-through opening of the first guide element, can interact with an opening in the switching element, wherein the opening can be present, for example, next to the opening for receiving the lower lead-through opening. The opening for the rotatable mounting of the first guide element is preferably closed and has a substantially circular base area, while the opening for receiving the lower feed-through opening of the first guide element is preferably open at the top and rounded at the bottom.

The terms “up” and “down” do not represent unclear terms for the person skilled in the art, because the person skilled in the art recognizes that in the context of the present invention the spatial direction “up” is determined by the arrangement of the handle of the power tool. The handle is preferably designed in the shape of a bow and, together with the power tool, encloses a passage opening so that a user can essentially completely grasp the handle with his hand. The access opening is preferably also referred to as the access space in the context of the invention. As a result, a secure hold and grip of the power tool during transport or during its operation can advantageously be ensured. In the context of the present invention, the power tool is preferably arranged below the handle and below the access opening. The position of the power tool in relation to the handle in this way preferably defines the spatial direction "downwards". The spatial directions “front” and “rear” are determined in the context of the present invention by the arrangement of the guide elements. The spatial direction "front" preferably corresponds to the area of the power tool in which the switching device or the first guide element is arranged. For better orientation, in particular on the attached figures, the spatial direction "front" can also be referred to synonymously as the "left side" of the power tool or the handle, while the spatial direction "rear" is synonymous as the "right side" of the Power tool or the handle is referred to. The spatial direction "rear" is preferably determined by the arrangement of the second guide element, which is preferably arranged in the rear region of the handle.

The switching element is connected to a connecting element via a first connecting means. As a result, when the switching element is actuated, the connecting element actuates a switching device, the switching device being arranged in a housing of the power tool. The housing of the power tool preferably encloses a substantially closed interior space of the power tool, the connecting element and the switching device of the proposed switching system preferably being arranged in this interior space of the power tool.

It is preferred in the context of the invention that the switching element has openings at a first upper end and a second upper end for receiving the first and the second guide element. The connection between the switching element and the guide elements is preferably established in this way. The guide elements can comprise various openings and feed-through openings into which connecting means can be inserted or passed. In the context of the present invention, the term “opening” should be understood to mean that there are recesses in the preferably disk-shaped guide elements acts, wherein the openings preferably have substantially circular base areas. In the context of the invention, the openings can preferably also be referred to as essentially round holes. Feed-through openings - unlike the openings - are preferably cylindrical and have an edge protruding from the disk-shaped base body of the guide elements. The connecting means can be, for example, pins, nails, wires, rods or spacer elements. For example, the two guide elements can be designed essentially the same and have four openings or lead-through openings. The four openings and lead-through openings, for example, can be distributed uniformly around the circumference of the guide elements, so that an angular distance between the openings and lead-through openings is in a range of approximately 90 °. In this respect, the openings and through-openings can preferably be referred to in a clockwise direction as lower, left, upper and right openings or through-openings. The lower lead-through opening of the guide elements is preferably defined in that it can be introduced into one of the receiving openings of the switching element. In the context of the invention, it is preferred that a pin, which can for example comprise metal or be formed from metal, can be guided through the lower lead-through opening. The receiving openings at the upper ends of the switching element are preferably designed to receive the connecting means and an edge of the lower lead-through opening. The pins, which are guided through the lower feed-through openings of the guide elements, are preferably so long that they can also be received in openings in the handle housing. It is preferred in the context of the invention that the pins which are arranged in the lower lead-through opening of the guide elements ensure that the guide elements are rotatably mounted inside the handle housing.

It is preferred in the context of the invention that the guide elements are designed symmetrically in the sense that they have essentially the same front and rear sides. The front side of the guide elements corresponds to the side facing the viewer of the attached figures, while the rear side represents the side of the guide elements facing away from the viewer. A front and a rear side of the switching element can also be defined in an analogous manner. The openings of the switching element for receiving the lower and front feed-through openings of the guide elements on the front side and rear side are preferably also designed essentially the same. The term “essentially” is not an unclear term for the person skilled in the art because the person skilled in the art knows that the term “essentially” is to be understood such that, for example, the “essentially the same” objects are designed to correspond to one another at the relevant point in the sense "Identical" are designed so that during the manufacturing process, for example, the front and back of an object were at least strived for "equality". The person skilled in the art knows that, for example, there may be minor deviations from a complete identity due to production.

The right-hand feed-through openings of the guide elements can preferably interact with the spacer element that connects the two guide elements to one another. In particular, the spacer element is designed to keep the two guide elements of the switching system at a distance or to ensure that a distance between the guide elements remains constant. The spacer element can preferably be designed as a bracket, for example as a wire bracket. The distance between the guide elements is preferably determined by the length of a transverse element of the spacer element, while two side elements can be inserted into the right or rear feed-through openings of the guide elements in order to fasten the spacer element to the guide elements - preferably releasably.

It is preferred in the context of the invention that the second guide element acts or presses on the switching element. The switching element is preferably aligned by an elastic element in the off state of the electrical device. The elastic element can for example be formed by a spring or comprise such a spring. The elastic element can, for example, be in contact with the second guide element, wherein a second end of the elastic element can be fastened to a fastening section of the switching element. This fastening section is preferably located on an underside of the handle housing and in particular in the preferably hollow interior of the handle of the power tool. It is preferred in the context of the invention that the elastic element is set up to hold the switching element in an off position, which preferably corresponds to the off state of the electrical device. This off position is preferably assumed by the bias voltage when the switching element is released. It is preferred in the context of the invention that the switch is biased in the off position. It is also preferred in the context of the invention that the second guide element is additionally in pressure contact with the switching device via the elastic element.

It is preferred in the context of the invention that the switching element in the handle of the power tool interacts with the switching device in the interior of the power tool via a first connecting means and a connecting element. It is preferred in the context of the invention that the switching element has an attachment area for the first connecting means. Preferably the attachment area for the first connecting means is in its front area of the switching element. The attachment area can include, for example, a nose that protrudes forward from the switching element in one spatial direction. The attachment area can have an opening into which the first connecting means can be inserted. The first connection means is preferably set up to establish a connection between the switching element in the handle of the power tool and the connection element in the interior of the power tool. The connecting element preferably interacts with the switching device, which is also arranged in the interior of the power tool, in order to convert an actuation of the switching element into an actuation of the switching device. In the context of the invention, it is very particularly preferred that actuation of the switching element, which is preferably designed as an actuating element, results in actuation of the switching device inside the power tool. In particular, the actuation of the switching element is brought about by a movement of the user which moves the switching element "upwards" in a spatial direction, that is to say preferably in the direction of an interior of the handle of the power tool. As a result of the movement of the switching element, due to the connections between the elements of the proposed switching system, the guide elements and subsequently the connecting element are also moved. In particular, the actuation of the switching element is first transmitted to the connecting element and from there to the switching device in the housing of the power tool. It is preferred in the context of the invention that the actuation of the switching element in the spatial direction “up” is converted to an actuation of the switching device in a spatial direction “down”. The movements of the switching element and the switching device preferably run opposite one another, but essentially parallel.

It is preferred in the context of the invention that the switching device comprises a base body and an actuating element. The base body of the switching device is preferably designed essentially in the shape of a parallelepiped, while the actuating element of the switching device is preferably designed in the shape of a stamp. The connecting element preferably interacts in particular with the actuating element of the switching device, the actuating element being able to be pressed down by a movement of the connecting element. The actuating element can preferably comprise an elastic element, such as a spring, in a narrow intermediate region in order to absorb part of the energy transmitted by the depression. For the purposes of the invention, it is preferred that the main body contain adjusting and / or control means which cause effects within the power tool that occur with the actuation of the switching element of the switching system should be effected. In the context of the invention, it is particularly preferred that the electrical device can be switched on and off with the proposed switching system.

It is preferred in the context of the invention that a pin, which is arranged in the front feed-through opening of the second guide element, is received by elongated holes on a front side and a rear side of the switching element. The pin is preferably received, in particular movably, by the elongated holes of the switching element. In the context of the invention, this preferably means that the pins can move in the elongated holes, preferably forwards and backwards or to the right and left. The elongated holes can have a length of 2 to 5 mm, preferably between 3 and 4 mm, so that a pin with a diameter of approximately 1 mm can easily move back and forth in the elongated hole. The height of the elongated hole preferably corresponds to the diameter of the pin and can, for example, be a little more than 1 mm.

It is preferred in the context of the invention that the first connecting means of the proposed switching system is designed as a pull rod. The connecting element can preferably be designed as a rocker. Preferred embodiments of the invention and its components are shown in the figures.

In a second aspect, the invention relates to a power tool, the power tool having a proposed switching system. The definitions, technical effects and advantages that were described for the switching system apply analogously to the power tool, and vice versa.

Further advantages of the invention emerge from the following description of the figures. The figure shows an exemplary embodiment of the present invention. The figure, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into useful further combinations.

Fig. 1

Ansicht einer bevorzugten Ausführungsform des vorgeschlagenen Schaltsystems

Fig. 2

Ansicht einer weiteren bevorzugten Ausführungsform des vorgeschlagenen Schaltsystems

Fig. 3

Ansicht einer bevorzugten Ausführungsform des Griffbereichs des vorgeschlagenen Schaltsystems

In the figures, the same and similar components are numbered with the same reference numerals. Show it:

Fig. 1

View of a preferred embodiment of the proposed switching system

Fig. 2

View of a further preferred embodiment of the proposed switching system

Fig. 3

View of a preferred embodiment of the grip area of the proposed switching system

Embodiments:

Fig. 1 Figure 3 shows a view of a preferred embodiment of the proposed switching system. A switching element (1) for an electric tool is shown, the switching element (1) being movably arranged in a handle (2) of the electric tool. In particular, the switching element (1) can be pushed up into the handle (2) of the power tool. This actuation of the switching element (1) is preferably also referred to as “pressing down” the switching element (1) in the context of the invention. When the switching element (1) is released, the switching element (1) preferably moves back out of the handle (2) in a spatial direction “downwards”. This movement of the switching element (1) takes place in particular into a passage space of the power tool which is formed by the power tool and the handle (2). The term “access space” preferably describes the space between the power tool and its handle (2). For the purposes of the invention, it is preferred that the switching element (1) of the proposed switching system is arranged on the side of the handle (2) which faces the power tool. In this respect, the switching element (1) moves in the in Fig. 1 illustrated embodiment of the invention, preferably in the direction of the power tool when it is released.

The proposed switching system comprises a first guide element (3) and a second guide element (4), which are preferably arranged in the interior of the handle (2) of the power tool. The handle (2) of the power tool is formed by a handle housing which can be made in two parts, for example. In a preferred embodiment of the invention, for example, a first half of the handle housing with the housing (9) of the power tool can be present, while a second part of the handle housing can be attached to this housing (9) of the power tool and / or the first part of the handle housing. The surface of the handle housing is preferably made of a different material than the housing (9) of the power tool. In particular, the two halves of the handle housing can comprise a particularly non-slip, haptically pleasant material that ensures a good and secure grip of the power tool in the user's hand. The handle (2) of the power tool is preferably designed in the shape of a bow. In particular, the handle (2) can comprise an elongated section which runs essentially parallel to the power tool or an outer edge of the power tool. Furthermore, the handle (2) can comprise two side parts which are opposite one another and are essentially parallel to one another. The two side parts of the handle are preferably arranged essentially perpendicular to the elongated section of the handle, as well as perpendicular to an outer edge of the power tool, which preferably forms the lower end of the access space between the handle (2) and the power tool forms. For the purposes of the invention, it is preferred that the transition areas between the two side parts and the elongated section of the handle (2) are designed as rounded corners. According to the invention, it is particularly preferred that the two guide elements (3, 4) of the switching system are arranged in an area of the interior in the handle (2) of the power tool which corresponds to these rounded corners of the handle (2). In other words, it is preferred in the context of the invention that the guide elements (3, 4) are arranged in the area of the preferably rounded corners of the handle (2). It is also preferred that the guide elements (3, 4) are arranged in the transition area between the side parts and the elongated section of the handle (2) of the power tool.

According to the invention, it is preferred that the first guide element (3) and the second guide element (4) of the proposed switching system are rotatably mounted in the housing of the handle (2) of the power tool. The guide elements (3, 4) have openings (12) and feed-through openings (13) through which pins or similar connecting means can be guided. These connecting means can interact with receiving means of the handle housing in such a way that the rotatable mounting of the guide elements (3, 4) in the cavity in the interior of the power tool handle is made possible. This rotatable mounting of the guide elements (3, 4) is in the Fig. 1 and 2 illustrated by the semicircular arrows in the guide elements (3, 4). Another component of the proposed switching system, which is rotatably mounted, is the connecting element (7), which is preferably arranged in the interior of the power tool or in the interior of the housing (9) of the power tool. The connecting element (7) is preferably designed to be rotatable with respect to the housing (9) of the power tool.

In the context of the invention, it is preferred that the first guide element (3) and the second guide element (4) are designed essentially the same. As a result, the manufacturing costs for the guide elements (3, 4) and thus also the switching system can be kept particularly low. The guide elements (3, 4) comprise openings (12) and feed-through openings (13) which can interact with connecting means in such a way that the guide elements (3, 4) are connected to other components of the handle (2), the switching system and / or the power tool can be. In particular, pins can be inserted as connecting means into the openings (12) and feed-through openings (13) of the guide elements (3, 4). For example, the guide elements (3, 4) can be kept at a distance by a spacer element (5). In particular, the spacer element (5) is designed to produce a constant distance between the guide elements (3, 4). The constant distance results preferably from the length of the spacer element (5) or from a length of a transverse element of the spacer element (5). For example, the spacer element (5) can be a rod or a bracket which can be hooked into openings (12) and feed-through openings (13) of the guide elements (3, 4).

The switching element (1) can be connected to a connecting element (7) via a first connecting means (6). The connecting element (7) can preferably be designed as a rocker. The connecting element (7) can have a thicker central area and flatter outer areas, the connecting element (7) being rotatably connected to the housing (9) of the power tool, in particular in the area of the central area. As a result of this rotatability of the connecting element (7), the up and down movement of the switching element (1) is advantageously transmitted to the switching device (8) when it is actuated. The movement is transmitted in particular through the first connecting means (6), which can preferably be designed as a pull rod. In the context of the invention, it is preferred that the switching element (1) has an attachment area (14) in which the first connecting means (6) is fastened to the switching element (1). For example, the attachment area (14) can have an opening into which the first connecting means (6) can be hung. For this purpose, the first connecting means (6) can be designed in the shape of a bow. The connecting element (7) can also have, for example, an opening in one of the two flat outer areas in order to receive the second side of the first connecting means (6) so that a connection is established between the first connecting means (6) and connecting element (7). The other side of the preferably rocker-shaped connecting element (7), which does not interact with the first connecting means (6), can preferably interact with the switching device (8) of the proposed switching system.

The switching device (8) comprises in particular an actuating element which is preferably designed in the shape of a stamp. The connecting element (7) preferably interacts with the actuating element of the switching device (8) so that the movement of the connecting element (7) can be transmitted to the switching device (8). The actuating element preferably comprises a flat contact section which can be in contact with the connecting element (7). On the side facing a preferably cuboid base body of the switching device (8), the actuating element comprises a slender central or transition area, which can preferably be surrounded by an elastic element such as a spring. The spring is preferably designed to preload the switching element (1), preferably on one side in the off position, which preferably corresponds to the switched off state of the electrical device. The energy generated by the Transmission of the movement from the switching element (1) to the switching device (8) is transmitted, is recorded and too fast or too strong a movement is damped.

It is preferred in the context of the invention that the switching device (8) and the connecting element (7) are present in the interior of the power tool or in the interior of the housing (9) of the power tool. The first connecting means (6) is preferably guided from the inside of the handle housing into the inside of the housing (9) of the power tool, so that an upper region of the first connecting means (6) can preferably be in the housing of the handle (2) and a lower region of the first connecting means (6) is preferably present in the housing (9) of the power tool. The housing (9) of the power tool and / or the handle housing can preferably comprise openings for the passage of the first connecting means.

Fig. 2 shows a further preferred embodiment of the proposed switching system with an additional second connecting means (15). The second connecting means (15) preferably connects the first guide element (3) to the connecting element (7), whereby it may be preferred within the meaning of the invention that the switching device (8) of the switching system is actuated with the connecting element (7), whereby the connecting element (7) in the in Fig. 2 illustrated embodiment of the invention is connected to the switching element (1). The connecting element (7) can preferably touch the switching device (8) or its actuating element and effect the transmission of a movement by means of a pressure or impulse transmission. The switching system preferably comprises a coupled guide for the switching element (1), it being possible for the switching device (8) to be actuated by means of the switching element (1) and the second connecting means (15). The coupled guidance of the switching system is preferably formed by the guide elements (3, 4).

Fig. 3 shows a view of a preferred embodiment of the handle area of the proposed switching system. In the lower area of the Fig. 3 the power tool can be seen, which can preferably be surrounded by a housing (9). There is preferably a handle (2) on the housing (9), it being possible for the housing (9) of the power tool to be at least partially connected to the housing of the handle (2). The handle (2) of the power tool is preferably designed in several parts and has a cavity in its interior. The handle (2) can preferably be formed by two corresponding, shell-shaped halves which together enclose the interior of the handle (2). A passage space is preferably formed between the handle (2) and the power tool. The switching element (1) of the switching system is arranged on the handle (2) of the power tool. It can preferably by a hand movement of the user of the power tool upwards into the interior of the handle (2). By releasing this access, the switching element (1) can be released again, so that the switching element (1) moves downwards again in the direction of the access space or the power tool. The switching element (1) can in its front area - in Fig. 3 shown on the left - comprise an attachment area (14) for the first connecting means (6), with which the first connecting means (6) can be attached to the switching element (1).

Furthermore, the switching element (1) can have openings (10) at a first upper end and a second upper end for receiving the first guide element (3) and the second guide element (4). The openings (10) are preferably arranged on the left-hand side and the right-hand side of the switching element (1), in each case in the area of the upper end of the switching element (1). The openings (10) are not preferably not closed, but are open at the top so that they can receive pins that can be present in openings (12) or through openings (13) of the guide elements (3, 4). In other words, connecting means such as pins that are present in openings (12) or through openings (13) of the guide elements (3, 4) can be received in the openings (10) of the switching element (1), so that advantageously an interaction between the Switching element (1) and the guide elements (3, 4) of the switching system is effected. In the in Fig. 3 The illustrated embodiment of the invention, the guide elements (3, 4) have three openings (12) or through openings (13). In the context of the invention, however, it is particularly preferred that the guide elements (3, 4) have four openings (12) or feed-through openings (13), with openings (12) or feed-through openings (13) as lower, left, upper and right openings (12) or passage opening (13) can be designated. The lower opening (12) or the lower feed-through opening (13) is preferably defined in that it is that opening (12) or feed-through opening (13) which receives a connecting means which is inserted into the openings (10) of the switching element ( 1) can be introduced. The other openings (12) and lead-through openings (13) - in particular the left, upper and right-hand ones - are then preferably obtained in the clockwise direction from the definition of the lower opening (12) or lead-through opening (13). The left lead-through opening (13) of the guide elements (3, 4) can preferably comprise connecting means which interact with closed openings or holes in the switching element (1) of the proposed switching system. In particular, the guide elements (3, 4) are rotatably mounted in relation to the switching element (1) via this connection, ie the guide elements (3, 4) can be rotated around the opening in the switching element (1).

The connecting means stored in the left feed-through opening (13) preferably represents the center point of the rotary movement of the guide elements (3, 4). The right feed-through openings (13) of the guide elements (3, 4) can preferably serve to establish the connection between the guide elements ( 3, 4) and the spacer element (5).

It is preferred in the context of the invention that the second guide element (4) is additionally connected to the switching element (1) via an elastic element (11). The elastic element (11) is in particular in Fig. 3 shown. It can be formed, for example, by a spiral or tension spring. The front of the elastic element (11) can be suspended or attached to a section of the switching element (1) provided for this purpose. When the second guide element (4) moves, the elastic element (11) can be deflected. The movement of the second guide element (4) can be, for example, the insertion movement of the lower feed-through opening (13) or the connecting means contained therein into the rear opening (10) of the switching element (1). The elastic element (11) preferably touches the second guide element (4) or is in contact with it. The upper opening (12) is preferably located opposite the lower lead-through opening, while the left lead-through opening (13) of the guide elements (3, 4) is opposite the right lead-through opening (13). A switch designed as a rotary or toggle switch can preferably be located in the middle of the preferably elongated switching element (1). Also shows Fig. 3 the lock (16), which is arranged in the housing of the handle (2) of the power tool.

List of reference symbols

1

Switching element

2

Handle of a power tool

3

first guide element

4th

second guide element

5

Spacer element

6th

first lanyard

7th

Connecting element

8th

Switching device

9

Power tool housing

10

Openings of the switching element

11

elastic element

12th

openings

13th

Feedthrough openings

14th

Attachment area

15th

second lanyard

16

Lock

Claims (13)

Switching system for an electric tool, the switching system having a switching element (1) as an actuating element, the switching element (1) being movably arranged in a handle (2) of the electric tool,
characterized in that
the switching system comprises a first guide element (3) and a second guide element (4), - The guide elements (3, 4) being connected to one another via a spacer element (5), - wherein the guide elements (3, 4) are rotatably mounted in the handle (2) of the power tool and - The guide elements (3, 4) being connected to the switching element (1), wherein the switching element (1) is connected to a connecting element (7) via a first connecting means (6), so that the connecting element (7) actuates a switching device (8) when the switching element (1) is actuated, the switching device (8) in a housing (9) of the power tool can be arranged. Switching system according to claim 1
characterized in that
the switching element (1) is elongated and can be integrated into the handle (2) of the power tool. Switching system according to Claim 1 or 2
characterized in that
the switching element (1) has openings (10) at a first upper end and a second upper end for receiving the first guide element (3) and the second guide element (4). Switching system according to one of the preceding claims
characterized in that
the first guide element (3) and the second guide element (4) are designed essentially the same and have openings (12) and feed-through openings (13). Switching system according to claim 4
characterized in that
the spacer element (5) for connecting the guide elements (3, 4) interacts with a respective passage opening (13) of the first guide element (3) and the second guide element (4). Switching system according to one of the preceding claims
characterized in that
the switching element (1) has a mounting area (14) for the first connecting means (6). Switching system according to one of Claims 4 to 6
characterized in that
a pin, which is arranged in the front feed-through opening (13) of the second guide element (4), can be received by elongated holes on a front side and a rear side of the switching element (1). Switching system according to one of the preceding claims
characterized in that
the first connecting means (6) is designed as a pull rod. Switching system according to one of the preceding claims
characterized in that
the connecting element (7) is designed as a rocker. Switching system according to one of the preceding claims
characterized in that
the switching system comprises a lock (16) which is set up to prevent the power tool from being switched on unintentionally. Switching system according to claim 10
characterized in that
the lock (16) can be in a rest position and in a release position, a position of the lock (16) in the rest position and in the release position by an angular range of 20 to 40 ° degrees, particularly preferably by an angular range of 25 to 35 ° Degrees and most preferably is rotated by an angular range of approximately 30 ° degrees. Switching system according to claim 10 or 11
characterized in that
the switching system comprises a spring, in particular a torsion spring, which is designed to align the lock (16) in a rest position essentially perpendicular to the switching element (1). Power tool
characterized in that
the power tool has a switching system according to one of the preceding claims.

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