EP3962697A1

EP3962697A1 - Attachment for a hand-held power tool

Info

Publication number: EP3962697A1
Application number: EP20729948.8A
Authority: EP
Inventors: Benjamin Allgaier; Peter Seiler; Alexander LAUTENSCHLÄGER
Original assignee: Festool GmbH
Current assignee: Festool GmbH
Priority date: 2019-05-02
Filing date: 2020-04-28
Publication date: 2022-03-09
Also published as: JP2022529894A; CN113727795A; US20220314415A1; WO2020221722A1

Abstract

The invention relates to an attachment (110) for a hand-held power tool (200), in particular a screwdriver machine or drill. The attachment (110) has an attachment housing (113) and a drive element (123) on a drive side (111), wherein the drive element can be coupled to a machine output element (221) of the hand-held power tool (200) in order to drive the attachment (110), and the drive element is rigidly connected to an output element (120A) of the attachment (110) or is coupled to same via a transmission (530) so as to transmit a movement in order to drive a working tool (242). The attachment (110) has a securing device (105) on the drive side (111) for releasably securing to the hand-held power tool (200). The securing device (105) has at least one support surface (232) which is stationary relative to the attachment housing (113) for supporting on the hand-held power tool (200) in the direction of a support axis (ST) and at least one latch body (150) which can be moved between a locking position and an unlocking position and which is loaded into the locking position by a spring assembly (157), said latch body comprising at least one locking contour (155) which is in engagement with a mating locking contour (235; 135) of the hand-held power tool (200) in the locking position when the at least one support surface (232) is supported against the hand-held power tool (200) and which is not in engagement with the mating locking contour (235; 135) in the unlocking position in order to release the attachment (110) from the hand-held power tool (200). The latch body (150) is rotatably mounted about the support axis (ST) in order to move the latch body between the locking position and the unlocking position.

Description

Attachment for a hand machine tool

The invention relates to an attachment for a hand machine tool, in particular a screwdriver or drill, the attachment having a front housing and on a drive side a drive element that can be coupled to a machine output element of the hand machine tool for driving the front attachment and for driving of a work tool with a drive element from the attachment or is coupled in motion via a gearbox, the attachment on the drive side having a fastening device for detachable attachment to the hand machine tool, the fastening device having at least one support surface that is stationary with respect to the attachment housing for support the hand machine tool in the direction of a support axis and at least one adjustable between a locking position and an unlocking position and loaded by a spring arrangement in the Verriege treatment position locking body with at least has a locking contour which, in the locking position, is in engagement with a counter-locking contour of the hand machine tool when the at least one support surface is supported on the hand machine tool, and in the unlocking position for removing the attachment from the hand tool. Machine tool is out of engagement with the counter-locking contour.

Such an attachment is explained, for example, in EP 2 383 076 A2. One end face of the attachment housing forms a support surface on which contours to prevent rotation are arranged. In the interior of the attachment housing, the drive element is arranged and on this in turn a locking body, for example a ball, which is radially movable to the axis of rotation of the drive element of the be. When the attachment is plugged into the hand machine tool, for example a screwdriver, it moves radially inward to the axis of rotation of the drive element loaded locking body in engagement with a holding receptacle on the machine output element of the hand machine tool, so that the attachment is held on the hand machine tool with tensile strength.

However, the locking takes place on a rotating component, namely the machine output element of the hand machine tool. To release the Verriege development, an operator reaches into an interior of the attachment, which is inconvenient in some cases.

It is therefore the object of the present invention to provide an improved attachment.

To achieve the object, it is provided that the locking body is rotatably mounted about the support axis for adjustment between the locking position and the unlocking position.

Thus, the at least one locking contour can be brought into engagement or disengagement from the counter-locking contour by a tangential pivoting movement or rotational movement of the locking body. The tangential or pivoting movement of the locking contour can achieve a high tightening torque, for example. H. that the locking with respect to the support axis can be optimally implemented. For example, spring forces of the Federan arrangement, which loads the locking element in the direction of the locking position, can be low.

For example, the support axis is coaxial or parallel to an axis of rotation of the drive element.

The support axis and / or an axis of rotation of the drive element are preferably coaxial with a longitudinal center axis of the attachment or a longitudinal center axis of a part of the attachment which has the drive side.

A tool holder for the work tool is advantageously arranged on the output element so that the drive motor of the hand machine tool can Can drive the work tool via the attachment. It is also possible, however, for a holder for a tool holder to be arranged on the output side on which the output element is arranged, to which in turn the work tool can be fastened.

In principle, it would be possible for the locking contour to be provided for engagement with a counter-locking contour of the hand machine tool that is arranged on its machine output element. In such a configuration, the locking contour and the counter-locking contour rotate when the machine output element is driven. However, the following configuration is preferred: The locking contour is advantageously provided and / or designed to engage with a counter-locking contour of the hand machine tool that is stationary with respect to a machine housing of the hand machine tool.

Advantageously, the locking body and the drive element are rotatably mounted independently of one another and / or decoupled from one another in terms of rotation with respect to the housing or on the housing. Both measures enable the drive element to be rotatable when the locking body is stationary on the attachment housing and / or the locking body is rotatable when the drive element is stationary on the attachment housing.

It is advantageously provided that the at least one locking contour is or includes a bayonet contour and / or has an arcuate course. The at least one locking contour preferably extends in a ring around the support axis of the attachment. It is also advantageous if the at least one locking contour comprises one or more locking cams.

It is preferred if the at least one locking contour has at least one clamping contour, in particular a clamping slope or a clamping ramp, for clamping the attachment with the hand machine tool. An increase in the clamping slope or clamping ramp runs at an incline to an axis orthogonal to the support axis. The inclination is preferably a flat inclination at an angle of, for example, about 1 -5 ° to this or- thogonal axis. The inclination with respect to the support axis is preferably about 91 -95 °.

It is preferred if the at least one locking contour comprises at least two locking contours arranged at an angular distance on the locking body.

It is advantageous if the locking body has at least one grip contour that can be grasped by an operator. The handle contour is, for example, knurling, protruding ribs or the like.

It is advantageous if the locking body cannot be actuated from the locking position in the direction of the unlocking position when the attachment is arranged on the hand machine tool. Thus, the locking body cannot move in the direction of the unlocking position by itself when the attachment is mounted on the hand machine tool.

Furthermore, it is advantageous if on one of the hand machine tool side facing th side of the latch body no actuating surface or actuating bevel is arranged, based on which a contour of the hand machine tool can actuate the latch body from the locking position in the direction of the unlocking position. The contour is, for example, a housing contour or Gehäu sefläche of the machine housing of the hand machine tool.

The locking body is preferably designed as an annular body that extends partially or annularly around the support axis. For example, the locking body is arranged on the drive side or the drive-side end face of the attachment housing. There the locking body extends in an annular or partially annular manner.

It is preferred if the spring arrangement comprises a torsion spring penetrated by the support axis of the attachment device, which is supported on the one hand on the attachment housing and on the other hand on the locking body. Further components of the attachment, for example a shaft element, further springs or the like, can be arranged in the interior of the torsion spring. For example, it is advantageous if the drive element is arranged in an interior of the spring arrangement and / or the locking body, the locking body being, for example, ring-shaped or partially ring-shaped. The drive element is thus arranged radially inward with respect to the spring arrangement. The spring arrangement extends in a radial outer circumference around an axis of rotation of the drive element.

To prevent the attachment from rotating or to hold the attachment on the Fland machine tool, it is advantageous if the attachment has at least one anti-rotation contour for supporting the attachment on the Fland machine tool in a rotationally fixed manner with respect to the support axis, which in the

Fland machine tool mounted state of the attachment in engagement with a counter-rotation lock contour of the Fland machine tool.

The at least one anti-rotation contour is advantageously arranged in an interior of the locking body. For example, the locking body extends around an axis, for example the axis of rotation of the drive element. The bolt body he stretches, for example, around the anti-rotation contour. The Verdrehsi cherungskontur is advantageously arranged between the drive element and the locking body.

It is advantageously provided that the at least one anti-rotation contour is stationary with respect to the attachment housing or is mounted so as to be displaceable in the direction of the support axis.

In the case of the displaceable anti-rotation contour, it is advantageous if the attachment has at least one support stop for the at least one anti-rotation contour, on which a body having the anti-rotation contour, for example a sleeve body or sleeve-like support body, of the attachment device strikes when the at least one anti-rotation contour is in engagement with the counter-rotation lock contour of the Fland machine tool. The support stop forms, for example, a longitudinal stop or an end stop. The support stop limits, for example, a displacement path of the body carrying the anti-rotation contour in a direction away from the Fland machine tool. It is also advantageous if the at least one anti-rotation contour is loaded by a spring arrangement in the direction of an engagement position provided for engagement in the counter-anti-rotation contour of the hand machine tool. Thus, the spring arrangement ensures that the anti-rotation contour remains in engagement with the counter-anti-rotation contour. For example, a body carrying the at least one anti-rotation contour, in particular a sleeve body or sleeve-like support body, is spring-loaded by the spring arrangement in the direction of the counter-anti-rotation contour of the hand machine tool or in a direction in front of the drive side. This body can at the same time form a blocking body of a triggering device or can be movement-coupled, in particular firmly connected, to such a blocking body, which will be explained.

It is advantageous if the at least one anti-rotation contour, in particular designed as a toothing and protruding in the direction of the support axis in front of an end face of the attachment, has form-locking projections for engagement in form-locking receptacles of the hand-held power tool.

It is also advantageous if the at least one anti-rotation contour extends bo gene-shaped or star-shaped around the support axis. For example, several anti-rotation contours can extend in a star shape or radially away from the support axis and have an arc or angular distance from one another.

A preferred concept provides that the at least one anti-rotation contour is arranged on a sleeve body or sleeve-like support body. For example, an end face or narrow side of the sleeve body or support body has the anti-rotation contours, in particular a toothing or toothing. The sleeve body or support body is preferably penetrated by the support axis or the support axis is coaxial with a longitudinal center axis of the sleeve body or support body.

An advantageous concept provides that the attachment has a triggering device for triggering a movement of the locking body from the unlocking position into the locking position, the triggering device having a blocking body. has, which holds the locking body in a blocking position against the force of the spring arrangement in the unlocking position and can be brought into a release position by an operator action, in which the blocking body releases the locking body to move out of the unlocking position towards the locking position. Thus, the locking body is initially blocked in the unlocked position and pretensioned by the spring arrangement and can be triggered by the release device, so that the locking body automatically locks the attachment on the Fland machine tool, so to speak.

It is advantageous if the blocking body is longitudinally displaceable, in particular parallel to the support axis, and / or rotatably mounted on the attachment housing or with respect to the attachment housing. It goes without saying that the blocking body can be rotatably and displaceably mounted, for example along an inclined path, with respect to the attachment housing or on the same.

It is also preferred if the blocking body is loaded by a spring arrangement in the direction of the blocking position. The blocking body is thus loaded in the direction of the unlocking position of the locking body or loaded into a position in which the blocking body holds the locking body in the unlocking position. Against the force of the spring arrangement, the blocking body can be adjusted into the release position, whereby it then releases the locking body of a movement from the unlocking position into the locking position.

It is also advantageous if the blocking body is one by the

Fland machine tool for actuating the blocking body from the blocking position into the release position having actuatable actuating contour. For example, the actuating contour projects in the direction of the Fland machine tool in front of the drive side of the attachment, for example in front of its front side, and can be actuated from the blocking position into the release position when the attachment is plugged into or arranged on the Fland machine tool by the Fland machine tool.

It is further advantageous if the at least one anti-rotation contour is arranged on the blocking body and / or for actuating the blocking body the blocking position is configured in the release position. So if the Verrehsi cherungskontur in engagement with the counter-anti-rotation contour of the

Hand machine tool brought and at the same time the blocking body adjusted from the blocking position into the release position.

An actuating gear, in particular a deflection gear, is advantageously arranged between the locking body and the locking body, by means of which the locking body releases or actuates the locking body for an adjustment from its release position into its locking position when it is adjusted from its locking position to its unlocking position. So when the operator unlocks the locking body, for example, he simultaneously actuates the release device from the release position to the blocking position or allows such an adjustment by a spring arrangement that loads the blocking body.

One embodiment advantageously provides that the deflection gear is or comprises a bevel gear. It is advantageous if the deflection gear deflects or releases a rotary movement of the locking body about the support axis into a linear movement of the blocking body parallel to the support axis. For example, the locking body is rotated for adjustment from the locking position into the unlocking position and releases the blocking body so that the blocking body can return to its blocking position under a spring load from its triggering process.

It is also advantageous if the deflection gear has inclined surfaces or Actuate supply inclines for engagement with one another. The inclined surfaces or actuation inclines can be arranged directly on the respective locking body or blocking body or on a body that is coupled in terms of movement or firmly connected to the locking body or blocking body.

In one embodiment, the attachment can be passive, so to speak, between its drive and its output. For example, it is possible that no torque-converting or speed-changing component is arranged between the drive element and the output element. In particular, the drive element and the output element are integrally and / or firmly connected to one another. However, it is also possible that the transmission is or includes a speed-changing transmission, for example a planetary transmission. For example, the gear unit can reduce or increase a speed of the output element compared to a speed of the drive element. For example, an angular gear is provided between the drive element and the output element. The angular gear can be provided in combination with the speed-changing gear or cause no change in speed.

It is also possible that the axes of the drive element and the output element are not coaxial in the front attachment. For example, it is possible for the axes of rotation of the drive element and the output element to be angled to one another or to have a parallel spacing from one another. The attachment is for example a so-called angle attachment or an eccentric attachment.

On an output side of the attachment having the output element, fastening means are expediently arranged which are compatible with the fastening device and comprise a support body for supporting the support surface of the fastening device and a counter-locking contour for engaging the at least one locking contour of the fastening device. It is of course advantageous if, in addition, counter-rotation lock contours are provided on the support body of the fastening means. For example, a series arrangement with two attachments according to the invention can be produced, with one of the attachments being arranged between the other attachments and the hand machine tool. Furthermore, it is possible that the attachment according to the invention is arranged, for example, sandwich-like between the hand machine tool and an attachment not according to the invention which can be attached directly to the hand machine tool.

Attachment it has a movement-coupled rotation blocking device with the locking body for the drive element, which in the unlocked position of the locking gel body assumes a rotational blocking position and the drive element is fixed in a rotationally fixed manner and in the locking position of the locking body a rotation release position assumes and releases the drive element to be rotatable. The turning Blocking device has, for example, a rotation blocking body which is adjustable parallel to the support axis and in the rotation blocking position is in engagement with form-locking contours on the drive element and in the rotation release position except for a grip with the form-fitting contours of the drive element. The rotation blocking body is preferably coupled to the blocking body of the triggering device for linear movement.

Finally, the invention advantageously also relates to a system comprising a guide device and a detachable attachment device according to the invention that can be detachably mounted on the guide device and / or a Fland machine tool detachably mountable on the guide device, in particular a Fland device detachably mountable on the guide device using the attachment device -Machine tool, be concerned.

The guiding device comprises e.g. a mounting bracket for releasably folding egg ner Fland machine tool, in particular a Fland drilling machine, and a contact body that has a contact surface for contact with a

Fland machine tool having workpiece to be machined, the Fland machine tool having a machine housing and a drive motor arranged in the machine housing for driving a tool holder, on which a working tool, in particular designed as a drilling tool or cutting tool, can be detachably mounted, the guide device has a guide arrangement for a guided relative adjustment of the tool holder with respect to the contact body.

The guide device advantageously has a dust removal device with a

Dust discharge duct, the first end area of which has an inflow opening in the area of the contact surface for the inflow of a particle flow and whose second end area, opposite to the first end area, has an outflow opening for the particle flow. It is advantageous in the case of the guide device, which in this configuration can also represent an independent invention in itself and in which the attachment is not necessary, that the dust removal channel runs on a handle element that can be grasped by an operator and with which the operator engages the guide device can hold with the workpiece to be machined. The dust removal channel can pass through the handle element and / or a part of the system body. Alternatively, it is also possible that the dust removal channel is arranged at least in sections on the side of the handle element and / or on the side of the contact body or runs there. Thus, on the one hand, the dust removal channel and, on the other hand, the handle element or the contact body can be separate components, which are, however, expediently firmly connected to one another. An integrated solution in such a way that the dust removal channel runs in the handle element and the contact body is preferred and favorable in practice.

An advantageous concept provides that the mounting bracket has at least one holding component which forms part of the guide device and is separate from the guide arrangement, by means of which the tool holder can be adjusted between a working position intended for machining the workpiece and a tool change position intended for a tool change, in which the The tool holder is further adjusted away from at least one component of the guide device that hinders or prevents a tool change, in particular the contact body, and is more accessible for the tool change than in the working position, the hand machine tool in the working position and the tool change position connected to the holding component is.

The holding component is provided by the guide device and can remain firmly on the guide device or be removable from the guide device. The holding component enables a convenient tool change in both cases. In the tool change position, namely, the tool holder is no longer the component hindering the tool change, for example the bearing body on, the guide arrangement or the like, but is moved away from it. It may be possible, for example, with the aid of the guide arrangement, to adjust the hand machine tool and thus its tool holder further away from the contact body. However, the additional holder component improves handling considerably.

The tool holder can be seen directly on the hand machine tool. It is also possible that the hand machine tool has a tool holder which, for example, has a tool holder for the work Has tool. It is possible for the tool holder to be arranged on the hand machine tool receiving tool.

It is preferred if the tool holder is opposite the plant body in the working position when the hand machine tool is held on the mounting bracket. In the tool change position, however, the tool holder is preferably adjusted to an angular position in which a plug-in axis along which the working tool can be attached to the tool holder and / or an axis of rotation of the tool holder does not run through the contact body. However, the quick-release axis or axis of rotation runs in the working position through the Anla body. The drive motor of the hand machine tool drives the tool holder around the axis of rotation.

It is advantageously provided that an axis of rotation of the tool holder, around which the tool holder can be driven by the drive motor of the hand machine tool, is parallel in the working position to a guide axis of the guide arrangement with which the guide arrangement guides the tool holder relative to the contact body is when the hand machine tool is held on the Montagehalte tion. The guide arrangement comprises or is, for example, a linear guide. It is possible that the guide axis and the axis of rotation are also parallel to one another in the tool change position, for example in the case of a linear adjustment of the mounting bracket. However, it is preferred that the guide axis and the axis of rotation are at an angular distance from one another in the tool change position.

The mounting bracket has, for example, a bearing, for example a pivot bearing, a linear bearing, a sliding bearing or combinations thereof, for adjusting the tool holder between the working position and the tool change position. For example, a pivot bearing enables that

To pivot the hand machine tool from a position in which its tool holder is opposite the contact body into the tool change position in which the contact body is no longer arranged frontally in front of the tool holder. A linear or sliding bearing enables the tool support took away from the contact body in the tool change position is moved further away than in the working position.

In the guide device, it is advantageously provided that the mounting bracket has a fixing device for fixing, in particular a locking device for locking and / or a clamping device for clamping, the mounting bracket in the working position and / or the tool change position. With the fixing device, the mounting bracket can be fixed and / or locked and / or jammed in the working position or the tool change position or both. It will be understood that combinations of such fixatives are possible, i. H. that, for example, the mounting bracket is jammed and locked in the working position, while it is only locked in the tool change position. Furthermore, it is possible that the mounting bracket can only be fixed in the working position or only in the tool change position by the fixing device. A clamping device comprises, for example, a clamping screw that can be screwed between a clamping position and a release position. Such a clamping screw can be arranged, for example, directly on the mounting bracket and act against a base body of the guide device in the sense of a clamp. A locking device comprises, for example, one or more bolts, for example a linearly displaceable and / or pivotable bolt.

The fixing device advantageously has at least one locking body or locking body. The locking body or latching body is advantageously spring-loaded by a spring arrangement in a locking position that locks the mounting bracket. The bolt expediently has a handle which can be grasped by an operator in order to move the bolt body or latching body from the locking position against the spring force of the spring arrangement into a release position releasing the mounting bracket for adjustment between the working position and the tool change position. The locking body is designed for example as a locking pin. The spring or spring arrangement is supported on the one hand, for example, on the locking body, on the other hand, on a component supporting the locking body, for example the mounting bracket or a bearing body on which the mounting bracket is movably mounted. It is preferably provided in the guide device that the holding component is designed as an attachment which has an attachment housing and on one drive side a drive element which can be coupled to a machine output element of the hand machine tool for driving the attachment and for driving a work tool with an output element the attachment is firmly connected or coupled in motion via a gear, with a fastening device for releasable attachment to the drive side on the

Has hand machine tool and on the output element a tool recording is arranged for the work tool, so that the drive motor of the hand machine tool can drive the work tool via the attachment. Thus, the guide device provides an attachment device as a holding component, which can remain on the hand machine tool when it is adjustable between the working position and the tool change position.

The mounting bracket advantageously has a holding receptacle, in particular a plug-in receptacle, for receiving, in particular for plugging in, the

Hand machine tool and / or one on the tool holder

Hand machine tool arranged attachment, in particular an attachment according to the above description on. One variant provides, for example, that a housing section or some other section of the

Hand machine tool can be introduced into the holding receptacle, for example by being plugged in or plugged in. But it is also possible that at the

Hand machine tool an attachment, for example an angle attachment or the attachment described above, which forms part of the Führvor direction, is arranged and can be inserted, for example inserted, into the holding receptacle.

It is preferred if the mounting bracket has a clamping device for clamping the at least one holding component and / or the hand machine tool and / or a locking device for locking the at least one holding component and / or the hand machine tool. The locking device comprises, for example, a bolt which, in a release position, disengages from a locking receptacle of the holding component or of the

Hand machine tool, but in its locked position in the locking mechanism engages. To form the clamping device, for example, the aforementioned holding receptacle can be provided with a clamping screw with which a cross section of the holding receptacle is smaller in a clamping position of the clamping device than in a release position, so that in the clamping position the holding component or the hand machine tool is clamped in the holding receptacle. It is possible that the holding receptacle is reduced as a whole or that, for example, a clamping element, in particular a clamping screw, reduces the cross section of the holding receptacle in the clamping position or protrudes further into the holding receptacle than in the release position.

It is advantageous if the mounting bracket comprises or has a clamp or a clamping ring for clamping the attachment. The Klemmeinrich device can, for example, by means of an actuating element, in particular a clamping screw, be adjustable between a clamping position that clamps the object to be clamped and a release position that releases it. The actuation element can, for example, be designed as a handle that is suitable for grasping by one hand of an operator. The actuating element can also have, for example, a hand knob or a toggle-like head.

The guide device is preferably designed such that the

Hand machine tool remains on the guide device during adjustment between the work position and the tool change position and / or forms a fixed component of the guide device. So the

Hand machine tool for tool change not be removed from the Führungsvorrich device. This can be achieved, for example, through the already mentioned pivot bearing of the mounting bracket.

It is possible that the attachment forms a permanent part of the mounting bracket and the fastening device for releasably fastening the

Hand machine tool is provided on the guide device.

It is also possible that the attachment forms a component of the guide device that can be releasably fastened to the mounting bracket. The guide device advantageously has a dust removal device with a dust removal channel, the first end region of which has an inflow opening in the area of the contact surface for the inflow of a particle flow and the second end region of which, opposite the first end region, has an outflow opening for the particle flow.

It is advantageously provided that the dust removal channel runs on a handle element which can be grasped by an operator and with which the operator can hold the guide device in contact with the workpiece to be processed.

A basic idea here is that the dust removal channel runs on a handle element that can be grasped by the operator in order to keep the guide device in position with the workpiece to be processed. The handle element protrudes ergonomically from the guide device.

The dust removal channel can pass through the handle element and / or a part of the system body. Alternatively, it is also possible that the dust removal channel is arranged at least in sections on the side of the handle element and / or on the side of the contact body or runs there. Thus, on the one hand, the dust removal channel and, on the other hand, the handle element or the contact body can be separate components, which are, however, expediently firmly connected to one another. An integrated solution in such a way that the dust removal channel runs in the handle element and the contact body is preferred and favorable in practice.

A suction hose connection for a suction hose is expediently arranged at the outflow opening. For example, the suction hose connection has a plug-in receptacle or a plug-in projection for inserting or attaching a suction hose. A rotary decoupling can be provided on the suction hose connection, i. that the suction hose connection is rotatable relative to a base body of the handle element.

The suction hose or in any case a portion of the suction hose that is fixedly or detachably connected to the handle element preferably form a handle section provided for gripping by an operator. The suction hose can get stuck or be releasably connected to the handle element. For example, a length of this handle section is approx. 10-15 cm and / or is designed for gripping with one hand of an operator. The part of the suction hose connected to the handle element can be stiffened, for example, by a plug-in projection of the handle element which engages in the suction hose. This part of the suction hose has, for example, greater rigidity than a part of the suction hose that is further away from the handle element. As a result, the suction hose is, so to speak, a part of the handle element and can be better grasped by the operator.

The handle element is preferably rod-shaped. In principle, however, it would also be possible for the handle element to have an arcuate course that can be grasped by the operator. For example, the handle element is designed in the manner of a handle bar.

The contact body expediently has a passage opening for the working tool in the area of the contact surface. The passage opening is configured, for example, in the manner of a window. However, it is also possible for the work tool to penetrate into the workpiece next to the contact body or next to the guide device when the guide device is in operation. Preferably he stretches the contact surface or in each case a portion of the contact surface laterally next to the passage opening for the working tool. The passage opening for the work tool can be open on the side or be ring-shaped from the contact surface umge ben.

It is furthermore advantageous if the inflow opening is arranged on or in the area of a working area where the working tool penetrates the workpiece when the guide device is used. For example, the inflow opening is provided on or in a side wall of the contact body which is angled to the contact surface and adjoins the working area. It goes without saying that several, for example at least two, inflow openings can be present which communicate with the dust discharge channel or channels or several dust discharge channels. For example, two or more inflow openings can be arranged in a ring around the work area, in particular the passage opening, for the work tool. be net, so that dust can be extracted from several sides or from several angles from the work area or the area of the passage opening.

The handle element preferably has a longitudinal axis which is oriented in the direction of a work area in which the work tool penetrates the workpiece when using the Führvor device and / or in the direction of the aforementioned through-opening for the work tool, in particular its center. The handle element is, so to speak, radially from the center or the work area for the work tool.

The handle element preferably has a length which corresponds approximately to the width of an adult's hand. A length of the handle element is preferably about 10 cm to 15 cm. The handle element preferably has a diameter of approximately 1 cm to 3 cm, so that it can be ergonomically grasped.

A rubber coating and / or a handle contour, in particular a finger contour, can be provided on the handle element.

The handle element is preferably rigid.

The handle element can be firmly connected to the contact body. For example, the handle element can be glued, welded or otherwise permanently connected to the contact body. It is also possible that the handle element and the contact body are in one piece or are formed by a common body.

The handle element is preferably fixedly mounted on the contact body or can be connected or connected to it releasably.

For example, a screw connection means or a plug connection or both are provided for fastening the handle element to the contact body. The screw connection means include, for example, screw contours that are available on the hand grip element and on the contact body. The connector includes for example a plug-in projection on a plug-in receptacle. A screw thread can preferably also be provided on a plug connection.

The following measure is also advantageous for ergonomics: A longitudinal axis of the handle element expediently has an angle to the contact surface so that the handle element protrudes obliquely with respect to the contact surface from the contact body in a direction towards the mounting bracket. However, the longitudinal axis is at such an angle to the contact surface that the handle element is closer to the contact surface than to the mounting bracket. The angle with respect to the contact surface is, for example, approximately 10 ° to 45 °.

The guide arrangement can for example have a pivot bearing, a pivot guide, a curved guide or a curved guide track. However, a linear guide is preferred. For example, the guide arrangement has a linear guide and / or an elongated guide body, e.g. a management staff. The linear guide or the guide body extend along a guide axis that is angled, for example, at right angles to the contact surface. An angular position of the linear guide with respect to the contact surface can be a fixed angular position. However, it is also possible, for example to produce inclined bores or inclined millings, for the linear guide to be angularly adjustable with respect to the contact surface, for example by means of a corresponding pivot bearing. In addition, in this case fixing means are provided for fixing the guide arrangement relative to the contact body, for example a clamping screw, latching means or the like.

The guide arrangement expediently has two elongated and / or rod-shaped guide bodies on which the mounting bracket is displaceably supported. The guide bodies run parallel to each other and the Montagehal sion is arranged between the guide bodies. This enables optimal guidance. Without further ado, however, only a single guide body, for example a guide rod, a guide groove or the like, can be provided.

Of course, other guide bodies are also possible, for example three guide bodies which are arranged parallel to one another and in corner areas of a triangle. The mounting bracket is expediently mounted in a guide plane on a guide body of the guide arrangement and a center of the mounting bracket parallel to the contact surface is located in a plane parallel to the guide plane. This means that there is, so to speak, a transverse distance between the management levels. The guide levels are preferably at an angle to the contact surface, in particular special at right angles.

The guide device is preferably provided for operation with a guide rail. For example, the guide device, in particular its contact body, has a guide contour for guiding on a guide rail that can be placed on the workpiece. The guide contour can for example comprise a side wall surface and / or a receiving groove or guide groove. Of course, the guide contour can also be a guide projection for engaging a guide receptacle of the guide rail. The guide rail has, for example, a guide rib or a guide projection which is provided for engagement in the guide groove. The guide groove and the guide projection, which are arranged on the guide device and the guide rail or vice versa, expediently have an elongated shape and extend along a longitudinal direction or a guide axis. In particular, the Führvor device can be slid longitudinally on the guide rail using the guide contour. It is readily advantageous if several guide contours, for example guide grooves and / or support surfaces or guide surfaces, are provided that run parallel to the above-mentioned longitudinal guide axis.

Another advantageous concept provides that the guide device has a positioning device with at least one positioning body for engaging in a positioning recess for positioning the guide device relative to the positioning recess. The positioning body has, for example, a stand from the central axis of the work tool when this engages in the workpiece. The positioning recess can, for example, be a workpiece recess, in particular a hole in the workpiece. Furthermore, it is also advantageous if the positioning recess has a recess on a guide rail, for example the aforementioned guide rail suitable for longitudinal guidance of the guide device. On the guide rail there is preferably a hen arrangement provided with several positioning recesses. The positioning recesses can, for example, be provided at regular or equal intervals and / or equidistant.

The at least one positioning body can protrude permanently in front of the contact surface or be in a positioning position in which it can optionally intervene in the positioning recess. However, it is advantageous if the Positionierkör by on the guide device between a positioning position in which it engages in the positioning recess and / or protrudes in front of the contact surface, and a passive position in which it is removed from the positioning recess and / or from the contact surface , is adjustable on the guide device, for example can be removed from the guide device or is slidably mounted on it. For example, a sliding bearing is provided for adjusting the positioning body between the positioning position and the passive position.

It is a positioning body is preferably spring-loaded into the positioning position or the passive position by a spring arrangement. Thus, the positioning body engages in the respective positioned recess, for example due to the resilience. The opposite is also possible, i.e. H. that the operator, for example, actively actuates the positioning body against the force of the spring arrangement in the direction of the positioned recess.

A locking device for locking the at least one positioning body in the positioning position and / or the passive position is also advantageous. The locking device can, for example, be a latching device

Screw threads or the like comprise other positioning means. The locking device can, for example, switch the aforementioned spring arrangement so to speak passively, d. H. that the positioning body, which is sprung into the positioning position, for example, can be locked in the passive position.

It is preferred if the guide device has a plurality of positioning bodies, for example at least two positioning bodies, between which a working area for the working tool for engaging the workpiece is arranged. For example, the positioning bodies are provided opposite one another at the passage opening for the work tool.

Further preferred is a system comprising a guide device according to one of the preceding claims and a guide rail that can be placed on the workpiece. The guide rail is particularly suitable for use with the guide device in that it has, for example, a counter-guide contour, in particular a guide rib, for a guide contour, in particular a guide groove, for guiding the guide device on the guide rail along a guide axis. The guide rib engages in a guide groove, in particular on the contact surface of the guide device, and enables linear guidance along the guide axis. Preferably there are several counter-guide contours on the guide rail, e.g. Guide projections seen before which have a transverse distance in a direction transverse to the guide axis zuei zuei. Corresponding to this, the guide device has a plurality of guide contours, for example guide receptacles, which have a transverse spacing in the direction transverse to the guide axis. Furthermore, it is advantageous if the guide rail has at least one positioning recess, in particular a row arrangement of positioning recesses for engaging a positioning body of the guide device.

In the case of the guide device, it is advantageously provided that it comprises an attachment which has an attachment housing and a drive element on one drive side which can be coupled to the machine output element of the hand machine tool for driving the attachment and which is fixed to an output element of the attachment for driving the work tool connected or coupled in motion via a transmission, with a tool receptacle for the working tool being arranged on the output element, so that the drive of the

Hand machine tool can drive the work tool via the attachment, the attachment having on the drive side a fastening device for detachable attachment to the hand machine tool and at least one guide body protruding from the attachment housing, which for gripping, in particular gripping, is seen and designed by an operator of the hand machine tool and / or forms a component of a guide arrangement for a guided relative adjustment of the tool holder of the attachment with respect to a contact body of the guide arrangement, which forms a contact surface for contact with the hand machine tool Has workpiece to be machined.

The attachment forms, for example, an extension of a machine housing of the hand machine tool and forms a support base, which is connected to the hand machine tool, for the at least one guide body. This guide body can be a so to speak manually grippable guide body, for example a handle element. But it is also possible that the guide body forms part of a guide arrangement, i.e. H. for example a linear guide with which the tool holder of the attachment and thus also the hand machine tool can be guided relative to the contact body. Without further ado, however, the guide arrangement can also comprise or be a swivel guide. Such a guide arrangement, which comprises guide rods, for example, can also be grasped or grasped by the operator to move the hand machine tool with respect to the workpiece to be machined.

It is advantageously provided that the at least one guide body is designed as a hand grip element. In particular, the handle element is elongated or rod-shaped. The handle element can for example include a recessed grip sen. The handle element preferably projects radially from the attachment housing with respect to an axis of rotation of the tool holder.

It is preferred if a mounting bracket for releasably holding the attachment housing is arranged on the guide body, so that the at least one guide body can be detachably arranged on the attachment. An alternative possibility is that the guide body is fixedly arranged on the attachment housing, for example fixedly connected to it, in particular screwed, glued, welded or the like is otherwise materially connected. Furthermore, the guide body can form an integral part of the attachment housing. It is preferred if the mounting bracket has a holding receptacle, in particular a plug-in receptacle, for receiving, in particular for plugging in, the Vorsatzge device. A simple plug-in assembly is thus possible. It is preferred if the hand-held machine tool can only be received in the holding receptacle with the attachment mounted on it, that is to say that assembly of the hand-held machine tool would not be possible without the attachment.

The mounting bracket advantageously has a latching device for locking the front attachment and / or a locking device for locking the front attachment. A latching device or locking device is particularly advantageous in connection with the aforementioned plug-in assembly. For example, the latching device or locking device comprises a catch or a bolt which, in a latching position or locking position, engages in a latching receptacle or a locking receptacle on the attachment. At this point it should again be noted that such a latching receptacle or locking receptacle is not regularly provided on a hand-held machine tool. In contrast, the attachment advantageously has such a latching receptacle or locking receptacle, so that simple assembly or disassembly on the assembly bracket is possible.

The mounting bracket preferably comprises a clamp or a clamping ring for clamping the attachment comprises or is formed thereby. The clamp or the clamping ring is preferably actuated by a screw element, which is achieved by rotating the handle element already mentioned above between a clamping position in which the attachment is held in a clamped fit on the clamp or the clamping ring, and a release position in which the attachment can be removed from the clamping ring or the clamp, adjustable.

It is also advantageous if the attachment housing has a standardized Außenum catch. For example, it is advantageous if the attachment housing has a diameter of 43 mm. On an attachment housing with such a

Diameter can also be attached to a known clamp from which a handle protrudes. It is preferred if the mounting bracket has at least one folding component which forms a part of the guide device and is separate from the guide arrangement, with the aid of which the tool holder can be adjusted between a work position intended for machining the workpiece and a tool change position intended for a tool change the tool holder is further adjusted away from at least one component of the guide device that hinders or prevents a tool change, in particular the contact body, and is more accessible for the tool change than in the working position, the Fland machine tool being connected to the folding component in the working position and the tool change position .

Embodiments of the invention are explained below with reference to the drawing. Show it:

Figure 1 is a perspective oblique view of a guide device with a

Mounting bracket and one attached to it

Fland machine tool,

Figure 2 shows a detail D1 from Figure 1,

Figure 3 shows the guide device according to Figure 1 from above,

FIG. 4 shows a sectional view of the guide device according to FIG. 3, approximately along a section line A-A in FIG. 3,

FIG. 5 shows a side view of the arrangement according to FIG. 5 in a tool change position,

Figure 6 shows a section through the guide device according to Figure 5, approximately along a section line B-B,

FIG. 7 shows a further side view of the guide device according to FIG. 5, but in its working position, FIG. 8 shows a perspective oblique view of the guide device according to the preceding figures in a state arranged on a guide rail,

FIG. 9 shows a variant of the guide device according to FIG. 8 with another variant of a guide rail,

FIG. 10 shows a cross-sectional view through the arrangement according to FIG. 9, approximately along a section line C-C in FIG.

FIG. 11 shows a variant of a flange grip element with a suction hose, roughly corresponding to a section D3 in FIG.

Figure 12 is a plan view of the mounting bracket according to Figure 1 from above,

FIG. 13 shows an exploded view with the guide device according to FIG. 1, the Fland machine tool and an attachment device provided for attachment to the mounting bracket for this purpose,

FIG. 14 shows the arrangement according to FIG. 13, with the Fland machine tool not yet mounted on the mounting bracket,

FIG. 15 the arrangement according to FIG. 14 with the assembly mounted on the mounting bracket

Fland machine tool,

FIG. 16 shows a variant of the mounting bracket according to FIG. 11 from above,

FIG. 17 the guide device according to the preceding figures with the mounting bracket partially pivoted from the working position into the tool change position according to FIG. 16 in a lateral oblique perspective,

Figure 18 arrangement according to Figure 17, but from an opposite side, 19 shows the mounting bracket according to FIGS. 15-17 with an attachment to be arranged on it,

FIG. 20 shows the guide device according to FIGS. 15-19, which is adjusted into the tool changing position and on which the Fland machine tool is arranged,

FIG. 21 the Fland machine tool according to the preceding figures with an attachment mounted on it and a further attachment,

FIG. 22 shows the Fland machine tool according to the preceding figures with two attachments not yet mounted on it,

FIG. 23 shows a section through a front part of the Fland machine tool according to FIG. 21 and its attachment, approximately along a section line E-E,

FIG. 24 shows the attachment according to FIG. 22, however, from the

Fland machine tool removed and in a section along a section line F-F in Figure 21,

FIG. 25 shows an exploded view of the attachment according to FIGS. 22, 23 with an enlarged detail D2,

FIG. 26 shows the attachment according to FIG. 25 obliquely from the front,

FIG. 27 shows a front part of the Fland machine tool according to the above

Characters,

FIG. 28 shows a drive side of a further attachment which is shown in FIG

Figure 29 is shown obliquely from its front side,

FIG. 30 shows a cross section through the attachment according to FIGS. 28, 29 in a blocking position of its release device, FIG. 31 shows a right part of the illustration according to FIG. 30, the triggering device being adjusted to its release position,

32 shows an exploded view of the attachment according to FIGS. 28-31,

FIG. 33 in cross section through an attachment with a speed-changing device

Transmission,

FIG. 34 shows a side view of the Fland machine tool with an attachment in the form of an angle attachment,

FIG. 35 the arrangement according to FIG. 34 in cross section.

A system 10 comprises a guide device 20 and a

Fland machine tool 200. A workpiece W can be machined with the system 10, for example bores BO being able to be made in a workpiece top side WO of the workpiece W.

The Fland machine tool 200 comprises a machine housing 201 with a drive section 202 in which a drive motor 210 is arranged. From the drive section 202 there is a flange handle section 203, on which, for example, a switch 212 is arranged for actuation by an operator in order to switch the drive motor 210 on, off or to influence its speed.

An energy store 211, for example a battery pack, with which the drive motor 210 and possibly controlling and / or monitoring components of the Fland machine tool 200 can be supplied with electrical energy is also arranged on the flange grip section 203. As an alternative or in addition to the energy store 211, however, a power cable or other similar supply device can also be provided for supplying the Fland machine tool 200.

The drive motor 210 drives, directly or via a gear 214, a tool holder 220 for receiving a work tool, for example a screwdriver bit, drill or the like. The tool holder 220 is of the Drive motor 210 rotatable about an axis of rotation D. Using a direction of rotation switch 213, a direction of rotation of the drive motor 210 can be specified and changed.

The tool holder 220 is provided at the front, free end region of a machine drive element 221, which protrudes in front of a neck section of the drive section 202 of the machine housing 201.

The machine output element 221 has a Hal tevertiefung 222 on its radial outer circumference, which is suitable, for example, as a locking receptacle for a Riegelele element of an attachment. In the present case, however, a support body 230 is provided for fastening the attachments of the hand machine tool 200 explained below, which is for example plate-like. The machine power take-off element 221 projects in front of the support body 230.

The support body 230 has on its end face 231 a support surface 232 for supporting an attachment, e.g. of an attachment 110. Opposite anti-rotation contours 233 are advantageously provided on the support surface 232, for example depressions or form-fit receptacles 234, which serve to engage anti-rotation contours of an attachment to support the attachment in a manner that prevents rotation. The form-fit receptacles 234 extend in a star shape around the axis of rotation D. It is preferred if the form-fit receptacles 234 have equal angular distances from one another.

In front of the support body 230, counter-locking contours 235, for example bayonet contours 236, protrude radially outward. An annular recess 237 extends around the support body 230, so that when a front attachment device is plugged in or mounted, its locking contours between the Ge

gene locking contours 235 can be inserted into the recess 237 and by a rotation about the axis of rotation D in rear engagement with the Ge

gene locking contours 235, so the bayonet contours 236, can be brought.

A tool holder 240, for example a drill chuck, can be fastened directly to the tool holder 220. The tool holder 240 has, for example, a tool holder 241, for example not in the drawing shown, but known clamping jaws, for a working tool 242, for example a drilling tool. A quick and easy attachment of the tool holder 240 to the tool holder 220 provides, for example, that it is brought into engagement with the machine output element 221 with a type of quick coupling, for example by means of locking elements, in particular balls, which come into engagement with the holding recess 222 under spring load and using an unlocking handle 243, for example an actuating ring, can be brought in the direction of their unlocking position, in which they are out of engagement with the Hal tevertiefung 222 so that the tool holder 240 can be removed from the tool holder 220.

A hands-free mode of operation that is possible at any time provides that an operator makes the bores BO in the workpiece W, for example by engaging the pistol-like protruding handle section 203 of the machine housing 201 and then making the corresponding holes or bores in the workpiece W.

An angularly correct, in particular perpendicular, introduction of bores LO into the workpiece W using the hand machine tool 200 is facilitated by a guide device 20. The guide device 20 comprises a contact body 21, which can be applied with a contact surface 22 to the workpiece W, in particular its workpiece upper side WO. The contact surface 22 is provided on an underside 23 of the contact body 21, which carries a guide arrangement 70 on its upper side 24.

The guide arrangement 70 comprises guide bodies 71, which are designed, for example, rod-shaped. The guide bodies 71 protrude at an angle from the upper side 24 of the contact body 21, for example at right angles. The guide body 71 ver run parallel to a guide axis F.

A slide 74 is mounted on the guide bodies 71 in a linearly adjustable manner. The guide bodies 71 form components of a linear guide 73. The slide 74 has bearing receptacles 84, for example guide bushings or the like, which are penetrated by the guide bodies 71, so that the slide 74 is mounted on the guide bodies 74 so that it can move linearly parallel to the guide axis F. The slide 74 is used to hold the hand machine tool 200 so that it can be adjusted along the guide axis F by means of the linear guide 73 between a position furthest away from the contact body 21, an inactive position IS, and penetration positions ES, which are adjusted closer to the contact body 21, so that the Working tool 242 guided along the guide axis F penetrates into the workpiece W, e.g. to produce holes in the workpiece W. Since the contact surface 22 and the guide axis F are orthogonal to one another, the holes L2 made using the working tool 242 designed as a drill are perpendicular right or at right angles to the workpiece top WO.

The slide 74 is loaded in the direction of the inactive position IS by a spring arrangement which comprises, for example, one or more springs 72. The spring 72 is supported on the one hand on the contact body 21 and on the other hand on the slide 74 and is penetrated by one of the guide bodies 71.

Using a depth stop device 75, several setting positions, e.g. Setting positions T1 and T2 and other setting positions, adjustable. The depth stop device 75 comprises, for example, a depth stop body 76, which is mounted displaceably on one of the guide bodies 71 parallel to the guide axis F and can be releasably fastened using a fastening device, for example a clamping device 77, in a respective setting position T1, T2 to be set.

The depth stop body 76 comprises, for example, a clamp of the

Clamping device 77, which is adjustable by an actuating element 78, for example a screw with an actuating handle, between a release position in which the depth stop body 76 is displaceable on the guide body 71, and a clamping position in which the depth stop body 76 is held stationary on the guide body 71 . The slide 74 strikes the depth stop body 76 in the respectively set or fixed setting position T1, T2 or other setting positions.

A movement path of the slide 74 on the linear guide 73 is also limited in one direction away from the contact body 21, namely by a height stop device 79. This includes a height stop body 79A, which is also if, by means of a clamping device 77, it can be fixed in a respective longitudinal position with respect to the guide axis F on the guide body 71 and can also be adjusted by an actuating element 78 between a clamping position fixed in place on the guide body 71 and a release position in which the height stop body 79A along the guide body 71 is displaceable and optionally also removable from this.

Furthermore, the slide 74 can be fixed to the guide arrangement 70 in one or more longitudinal positions parallel to the guide axis F, namely by means of a fixing device 85. The fixing device 85 comprises, for example, a fixing element 86, for example a clamping screw, which has an actuating handle 87 for manual operation by an operator and the free end of which protrudes into one of the bearing receptacles 84. The fixing element 86 is between a clamping position in which, for example, a free end of the fixing element 86 is supported in a press fit on the guide body 71 penetrating the bearings 84, so that the slide 74 is stationary with respect to the guide arrangement 70, and a release position, in which removes the free end of the fixing element 86 from the guide body 71 and thus the slide 74 is displaceable along the guide arrangement 70, adjustable.

A mounting bracket 80 for releasably attaching the hand-held machine tool 200 is provided on the slide 74. The mounting bracket 80 comprises a base body 81 from which side legs 82, 83 protrude at an angle, for example at right angles. The base body 81 and the side legs 82, 83 form an overall approximately U-shaped shape.

The bearing receptacles 84 are, for example, legs 82, 83 on the longitudinal end regions of the base body 81 or in the angled sections between the base body 81 and the sides.

The mounting bracket 80 comprises a holding receptacle 94 for receiving and holding the hand machine tool 200. The holding receptacle 88 is provided on a holding body 89 which is held on the base body 81. An embodiment not shown in the drawing could provide that the base body 81 the holding receptacle 88 has and / or that the holding bodies 89 are fixedly and immovably Lich arranged on the base body 81.

The holding body 89 comprises a clamping bracket 91 which, together with a base leg body 92, delimits the holding receptacle 88. The clamping bracket 91 can be adjusted to the base limb body 92 in the sense of a narrowing or reduction of the cross section of the holding receptacle 88 using a fixing device 93.

The fixing device 93 comprises, for example, a clamping screw 94 which penetrates the clamping bracket 91 and is screwed or can be screwed into the base limb body 92. The fixing device 93 thus forms a clamping device with which, for example, the neck section 204 or an attachment 110, which can be detachably fastened to the hand machine tool 200, is fixed to the guide device 20.

If, for example, the neck section 204 has a corresponding length, it can be fixed directly by the fixing device 93. A preferred embodiment, however, provides that the attachment 110 is arranged on the neck portion 204 or the front side of the hand machine tool 200, which, so to speak, extends the neck portion 204 and thus provides a fixing base or clamping base for the fixing device 93 with which the

Hand machine tools 200 can be releasably attached to the guide device 20. The attachment 110 has a tool holder 120 which is rotatably coupled or non-rotatably connected to the tool holder 220 of the hand machine tool 200. When the attachment 110 is fastened to the hand machine tool 200, the tool holder 120 forms, so to speak, the tool holder of the hand machine tool 200.

The tool holder 240 can optionally be attached to the tool holder 220 of the

Hand machine tool 200 or attached to a tool holder 120 of the attachment 110, which is directly coupled to the tool holder 220 when the attachment 110 is fastened to the hand machine tool 200 BE. In the present case it is provided that the holding body 89 can be adjusted with respect to the base body 81 and / or the slide 74 by means of a pivot bearing 95 about a pivot axis S between a working position AP and a tool change position WP. In the working position AP, the working tool 242 is oriented parallel to the guide axis F and / or perpendicular to the contact surface 22 and can thus be used for drilling holes LO. In the tool change position WP, however, the axis of rotation D of the tool holder 220 is pivoted away from the contact surface 22 and / or the contact body 21, for example by at least 45 °, preferably by more than 45 °, in particular about 90 °, so that the tool holder 220 for a tool change, ie for changing the work tool 242 on the tool holder 220 or on the tool holder 240 arranged thereon.

The holding body 89 forms a holding component 90 with which the tool holder 220 can be adjusted, namely pivoted, between the working position AP and the tool changing position WP. In the working position AP, the elongated working tool 242, for example a drill, lies opposite the contact body 21 and is also arranged between the guide bodies 71, which both change the tool of the working tool 242 on the tool holder 241 or the tool holder 240 on the tool holder 120 and thus also form components 15 which impede a tool change on the tool holder 220, so that a tool change is at least cumbersome. In the tool change position AP, however, the tool holders 120, 220 and the tool holder 240 arranged thereon with the tool holder 241 are pivoted away from these at the components 15, see, for example, FIG. 5, so that the working tool 242 and / or the tool holder 240 are easily accessible and are therefore available for a tool change.

The holding component 90 can be locked with respect to a pivoting about the pivot axis S using a locking device 96. The locking device 96 comprises, for example, a bolt 97 which is slidably mounted in a bearing receptacle 97B. The bearing receptacle 97 is provided on the side leg 82 of the mounting bracket 80, for example. The bolt 97 is, for example, parallel to the pivot axis S on the mounting bracket 80 about a sliding axis displaceably mounted, which has a transverse distance to the pivot axis S. The latch 97 is preferably loaded into its locking position by a spring 98, which is received in the bearing receptacle 97B. In the locking position, the bolt 97 engages in a locking receptacle 99, for example on the holding body 89. The operator can conveniently unlock the locking device 96, for example by pulling an actuating element in a direction away from the Hal tekkörpers 89 in order to move the bolt 97 out of the locking receptacle 99 against the force of the spring 98. Then the holding component 90 and thus also the hand machine tools 200 attached to it can be pivoted between the working position AP and the tool change position WP.

In the working position AP, the holding body 89 preferably strikes a stop 95B, which protrudes in front of one of the side legs 82 or 83 or the base leg 81 disassembly bracket 80.

Another favorable possibility of adjusting the tool holder 220 between the tool change position WP and the working position AP is based on the attachment 110 and a particularly simple assembly of the

Hand machine tool implemented on the guide device 20 using the attachment 110 and an alternative mounting bracket 80B.

The attachment 110 is functionless with respect to the tool drive or the drive train of the hand machine tool 200, d. H. The attachment 110 has no torque-converting or speed-changing components, but only serves to enable a quick tool change.

The attachment 110 forms a further holding component 90B with which the tool holder 20 and / or 120 can be adjusted between the working position AP and a tool change position WP remote from the guide device 20. In this variant, the attachment 110 forms part of the guide device 20, which can remain on the hand-held machine tool 200 for tool changes and is detachably fastened by the guide device 20. Removing and arranging the hand machine tool 200 with the attachment 110 arranged thereon is quick and easy, as will become clearer below: A particularly simple installation of the hand machine tool 200 on the guide device 20 is possible with the mounting bracket 80B. To the extent that the mounting bracket 80B has the same or similar components as the mounting bracket 80, the same reference numerals are used. The mounting bracket 80B comprises, for example, the base body 81 with its side legs 82, 83 and further preferably also the pivot bearing 95.

The mounting bracket 80B has a holding body 89B on which the holding mount 88 is provided for holding the machine housing 201 and / or preferably the attachment 110 fastened to the machine housing 201.

The attachment 110 can be inserted into the holding receptacle 88 and locked there by a locking device 96B. The locking device 96B comprises, for example, a bolt 97C which is loaded by a spring 98B into a locking position in which it engages in a locking receptacle 99B on the attachment 110.

The bolt 97C is linearly supported along a linear axis LR, for example on the holding body 89B and can be gripped by an operator on a handle 97D so that it can be disengaged from the locking receptacle 99B against the force of the spring 98B. The attachment 110 attached to the hand machine tool 200 can be inserted into the holding receptacle 88 along a plug axis SA and is then automatically locked in the holding receptacle 88 by the bolt 97B loaded by the spring 98B. The linear axis LR or the displacement axis of the bolt 97C and the plug axis SA run at an angle, preferably at right angles, to one another.

For a tool change, only the locking device 96B has to be released, the attachment 110 then being released and thus the hand machine tool 200 with the attachment 110 arranged thereon and the tool holder 240 attached to the attachment 110 and holding the work tool 242 being removed from the guide device 20 can. The tool holder 241 is then easily accessible in order to change the work tool 242. The swivel In this case, bearing 95 is optimal for a convenient tool change, but not necessary.

Of course, it is easily possible that, for example, the Vorsatzge advises 110 is also clamped in the holding receptacle 88 of the holding body 89, for example between the clamping bracket 91 and the base leg body 92 is clamped ge.

It is also possible that directly on the neck section 204 of the

Hand machine tool 200 has a locking receptacle in the manner of the locking receptacle 99B for the locking device 96 if the neck section 204 has a cylindrical section of sufficient length with respect to the plug axis SA for insertion into the holding receptacle 88.

The contact body 21 forms, so to speak, a free end region or contact region or support region of the guide arrangement 70 and is used to contact or support the guide device 20 on the workpiece W.

The contact body 21 A has a substantially plate-like shape, with between its upper side 24 facing the mounting bracket 80 and its lower side 23 having the contact surface 22, transverse sides, in particular narrow sides, extend, namely transverse side 25, in the area of which the guide bodies 71 are arranged, one of these opposite, so to speak, rear transverse side 26 and transverse sides 27, 28 extending between these transverse sides 25, 26.

A coating or a covering 29 is preferably provided on the contact surface 22 or the underside 23 of the contact body 21, in particular a rubber coating or similar other slip-resistant covering.

The contact body 21 has a passage opening 30 through which the work tool 242 can be moved in front of the contact surface 22 and thus into the workpiece top WO. The passage opening 30 is, so to speak, a window through which the working tool 242 can penetrate into the workpiece W. Now, during the machining of the workpiece W, dirt occurs, in particular chips and dusts and the like, other particles. To remove such dirt or dirt particles, a suction device SV can be connected to the guide device 20 with a suction hose SL through which a particle flow PS with dirt particles from the area of the passage opening 30, which provides a work area AB of the guide device 20, can be sucked off.

The suction of the particle stream PS from the guide device 20 takes place through a flange grip element 40 to which the suction hose SL is closed or can be connected. The handle element 40 can be comfortably gripped by an operator, the operator at the same time positioning and / or holding the guide device 20 with respect to the workpiece W and also holding the suction hose SL stationary in the area of the guide device 20 or positioning it relative to the workpiece W.

A suction hose must have a mechanical load capacity with a corresponding load capacity for a workshop use or for use on or on a construction site, which is accompanied by a certain rigidity and a certain weight, i.e. H. that the suction hose exerts forces on the guide device 20 in the sense of a change in the position of the guide device 20 with respect to the workpiece W when it is connected to it. By the suction hose SV is connected to the handle element 40, the operator not only holds the guide device 20, but also the suction hose SV firmly in place when the guide device 20 is used to make the holes LO.

On a side wall 31, which delimits the passage opening 30 and thus the working area AB on one side, an inflow opening 32 for the particle flow PS is provided, which communicates with a receptacle 33 for the handle element 40 and is flow-connected.

The handle element has a tubular body 41 with a handle section 42 for gripping, in particular reaching around, by an operator. At one end of the handle section 42, a mounting section 43 is provided, which can be inserted and / or screwed into the receptacle 33 of the contact body 21. For example, screw connection means 44, for example screw threads, are provided on the inner circumference of the receptacle 33 and on the outer circumference of the mounting section 43 and can be screwed into one another. When the mounting section 43 is screwed into the receptacle 33, a flange 45 is preferably located between the mounting sections 43 and the handle section 42 on the contact body 21, for example its reverse side 28.

At the end region opposite to the mounting section 43, the tubular body 41 has a suction hose connection 46 to which the suction hose SL can be closed.

The handle element 40 has a longitudinal shape and extends along a longitudinal axis LH.

The handle element 40 can be inserted and / or screwed into the receptacle 33 parallel to its longitudinal axis LH. It is also possible that no screw connection means 44 are provided, but for example clamping means and / or locking means. For example, the handle element 40 can be inserted into the receptacle 33 and held in the receptacle 33 in a press fit. Furthermore, it is possible for corresponding bayonet contours, which can be brought into locking engagement, to be arranged on the inner circumference of the receptacle 33 and on the outer circumference of the handle element 40. Furthermore, the handle element 40 can be locked in the receptacle 33 by a locking element, for example a bolt that is movably, in particular pivotably or displaceably, mounted on the contact body 21 transversely to the longitudinal axis LH. It is also possible that the handle element 40 and the contact body 21 are firmly connected to one another, for example glued, welded or the like, or that the handle element 40 and the contact body 21 are integral.

The suction hose SL can be attached to the suction hose connection 46 parallel to the longitudinal axis LH. A corrugation 47, which preferably runs transversely to the longitudinal axis LH, serves to hold the suction hose SL securely on the Handle element 40. Locking contours, for example bayonet contours, can be provided between the suction hose SL and the suction hose connection 46. Furthermore, the suction hose SL can be held in a press fit on the suction hose connection 46.

The handle element 40 and the contact body 21 thus form a dust removal device 35 which has a dust removal channel 36. The inflow opening 32 and / or the receptacle 33 form an end area 37 and an outflow opening 39 of the handle element 40, to which the suction hose SL can be closed or connected, form end areas of the dust removal channel 36.

A bending stiffness of the suction hose SV has already been mentioned. One embodiment can also provide that a handle element 40B arranged on the contact body 21 is shorter than the handle element 40 with respect to the longitudinal axis LH and an end section SVE of the suction hose SV connected to the handle element 40B forms part of the handle element 40B.

For better support of the guide device 20 on the workpiece W and / or a guide rail, support bodies can be provided, preferably those that are fixedly or movably arranged on the contact body 21. For example, a support body arrangement 60 is provided which comprises a support body 61 which is movably guided on the contact body 21. The support body 61 is pivotably mounted on the support body 21 by means of a pivot bearing 62, which has a pivot axis preferably parallel to the guide axis F, and has a support foot 63 for support, for example on the workpiece W, at its free end region facing away from the mounting. The support body 61 must be pivoted close to the contact body 21 in a transport position so that it does not or only slightly protrudes in front of it, while in a support position it is pivoted away from the contact body 21 so that a support surface of the support sleeve 63, which is connected to the contact surface 22 in lies in a plane, is at a distance from the contact surface 22.

A side stop device 65 is also advantageous. The side stop device 65 comprises a side stop body 66 with a support surface which is angled to the contact surface 22 and protrudes in front of the contact surface 22. Thus, the Contact surface 22 on a workpiece top side WO of the workpiece W and the support surface of the side stop body 66 on a workpiece side surface WS, which is angled to the workpiece top WO, be supported.

A distance between the support surface of the side stop body 66 and the contact surface 22 can be set by a guide body 67 which is fixedly or detachably attached to the contact body 21. The guide body 67 preferably has a rod-like shape. The guide body 67 preferably projects laterally in front of the contact body 21 in a plane parallel to the contact surface 22. The side stop body 66 is mounted displaceably on the guide body 67 along a longitudinal axis, so that the support surface of the side stop body 66 can occupy different distances from the contact surface 22. In the respective longitudinal positions, the side stop body 66 can be fixed in place on the guide body 67, for example using a clamping device 68. The clamping device 68 comprises, for example, a clamping screw. A latching of the Seitenanschlagkör pers 66 with respect to the guide body 67 would easily be possible.

The guide device 20 can be used together with a guide rail 410. The guide rail 410 has a rail body 411 and can be placed on the workpiece W in its underside 412 and has guide contours 414, 419, for example guide ribs, on its upper side 413. The guide contours 414, 419 extend parallel to the longitudinal sides 415, 416 of the guide rail 410 between their longitudinal end regions 418, 417. A guide contour 34 or an arrangement of guide contours 34 is provided in a guide receptacle, in which the guide contour 414 the guide rail 410 can engage, so that the contact body 21 and thus the guide device 20 is guided or can be guided along a guide axis FA on the guide rail 410.

A guide rail 430 has the same or similar components and parts as the guide rail 410, that is, extends, for example, between its longitudinal end regions 417, 418 between which longitudinal sides 415, 416 extend. The guide rail 430 can be placed with its underside 412 on the workpiece W and has on its top opposite to the underside 412 Page 413 guide contours 414, 419, for example guide ribs to guide the engagement in guide receptacles of a contact body 21 A, which can be provided instead of the contact body 21. The contact body 21 A has a further in front of the passage opening 30 projecting support leg on which a further Füh approximately receptacle with guide contours 34A is provided.

For example, the guide contour 414 is provided for engaging a guide receptacle on which the explained guide contours 34 are provided, while the guide contour 419, in particular a guide rib, is provided for engaging the other guide receptacle with the guide contours 34A of the contact body 21A. The guide contours 414, 419, like the guide contours 34, 34A, are spaced transversely to the guide axis FA. The contact body 21 A is guided twice on the guide rail 430 at a distance transverse to the guide axis FA.

For Fierstellung of holes or holes LO in the workpiece W in vorbe certain, preferably equal intervals, a positioning device 50 is seen before. The positioning device 50 comprises, for example, at least one positioning body 51, in particular with a pin-like shape, which is provided for engaging in positioning recesses in the shape of, for example, already drilled holes LO. The positioning body 51 is nierstellung adjustable on the contact body 21 between a positioning in which it engages in the positioning recess, for example by its positioning projection 53 engages in one of the holes LO, and a passive position in which it does not engage in the positioning recess and / or closed at least aligned with the contact surface 22 or is adjusted back behind it. For example, the positioning body 51 is longitudinally displaceable along a positioning axis P in a bearing receptacle 55 of the contact body 21.

It is preferred if the positioning body 51 by means of a spring arrangement, e.g. a spring 56, is spring-loaded into the passive position. The spring 56 is supported on the one hand on a step of the bearing receptacle 55, on the other hand on a flange projection 50 of the positioning body 51.

The positioning projection 53 and a handle 52 for actuation by an operator are provided on opposite longitudinal ends of the positioning body 51. seen. With the aid of the handle 52, an operator can adjust the positioning body 51 against the force of the spring 56 from the passive position into the positioning position.

A lock is preferably provided for the positioning position. For example, the positioning body 51 is rotatable in the bearing receptacle 55 about the positioning axis P, so that locking contours provided on the positioning body 51, for example a section of the flange 54, are brought into locking engagement with complementary counter-locking contours provided on the bearing receptacle 55 can so that the positioning body 51 is received in the bearing receptacle 55 immovably with respect to the positioning axis P.

It is preferred if the positioning device 50 has several positioning bodies 51, for example two positioning bodies 51. For example, positioning bodies 51 are provided on opposite sides of the passage opening 30. Distances between the positioning axis P and thus the respective positioning projection 53 and an axis passing through the center of the holding receptacle 88, for example the longitudinal center axis of the working tool 242, are preferably the same. Thus, regardless of whether an existing arrangement of holes LO in the workpiece W to the right or left of the guide device 20 has already been created, one of the positioning bodies 51 can be adjusted into a hole of the already created arrangement of holes LO in order to use the working tool 242 to produce a further hole LO at a distance between its central axis and the positioning axis P of the positioning body 51 used.

However, it is also possible that a positioning device interacts with a guide rail, which is clear from the example of the guide rail 430 in connection with the contact body 21A. At the longitudinal end region of the leg of the contact body 21A remote from the through-opening 30, on which the guide contours 34A are arranged, a positioning device 50A is provided, which has a positioning body 51A, which is constructed similarly to the positioning body 51 already explained A can therefore be adjusted, for example, into a positioning position protruding in front of the contact surface 22 of the contact body 21A, where it then moves into a positioning recess 436 of a row arrangement 435 can intervene from positioning recesses. The positioning recesses 436 are for example net angeord on a guide rib 434 of the guide rail 430. In particular, the positioning recesses 436 are arranged parallel to the guide axis FA next to one another and / or have the same distances from one another.

The front attachment 110 is with its drive side 111 for mounting on the

Fland machine tool 200 is provided and has on an output side 112 opposite to the drive side 111, the tool holder 120, into which, for example, a screwdriver bit can be inserted directly or the tool holder 240 can be fastened.

The shaft element 121 has a holding recess 122 for the tool holder 240 in the area of the tool holder 120. On the drive side 111, the shaft element 121 has a drive section which forms a drive element 123 which can be coupled to the machine output element 221 in a rotationally fixed manner. For example, a hexagonal contour or other polygonal contour is provided on the drive element 123 as a rotary driving contour 123A. The drive element 123 can therefore be inserted into the tool holder 220, which has an inner circumferential contour that positively receives the rotary driving contour 123A. The tool holder 120 is arranged integrally on the shaft element 121, so that the tool holder 120 or the output section of the shaft element 121 form an output element 181 which is directly connected to the tool holder 220 of

Fland machine tool 200 is rotationally coupled when the attachment 110 is arranged on the Fland machine tool 200.

An attachment housing 113 of the attachment 110 has a peripheral wall 114 which encloses an interior space 115 in which a shaft element 121 having the tool holder 120 is rotatably mounted. For example, bearing receptacles 116, 117 for a bearing arrangement for mounting the shaft element 121 are provided in the interior 115. In the bearing receptacles 116, 117, bearings 126, 127, for example a ball bearing and a sliding bearing, are received, on which the shaft element 121 with bearing sections 124, 125 is supported. Retaining rings 128A, 128B, for example split-pin rings or the like, support the bearings 126, 127 with respect to the shaft element 121 and / or the shaft element 121 with respect to the attachment housing 113.

On the output side 112, the output element 120A projects in front of a cover 131. On the cover 131, a support body 130, which forms part of fastening means 130A, is arranged. The support body 130 has a support surface 132 which is penetrated by the shaft element 121, i. H. in front of which the tool holder 120 protrudes. Form-fit receptacles 134 for forming contours 133 to prevent rotation are arranged on the support surface 132. Furthermore, there are counter-locking contours 135, for example bayonet contours 136, on the radial outer circumference of the support surface 132. In addition to the counter-locking contours 135, a recess 137 is provided, into which the locking contours, for example of the locking body 150 explained below, are inserted in order to subsequently rotate of the locking body 150 whose locking contours 155 in a grip or rear grip with the counter-locking contours 135 to bring.

With its drive side 111, the attachment 110 is attached to the fastening means 130A of another attachment 110 or, as a rule, to one

Hand machine tool, for example hand machine tool 200, can be fastened to a fastening device 105.

On the drive side 111 of the attachment 110, there are anti-rotation contours 143, for example, form-fit projections 144 of the fastening device 105 for form-fitting engagement in the counter-rotation-protection contours 233 or form-fit receptacles 234 of the hand machine tool 200 or the torsion-lock contours 133 or form-fit receptacles 134 of another attachment 110. The anti-rotation contours 143 are provided on a support body 140 which is, for example, sleeve-like or ring-shaped. The support body 140 is e.g. penetrated by the shaft member 121.

The form-fit projections 144 project in front of an end face of the support body 140, which has a support surface 141 for supporting the attachment 110 on an opposite support surface, for example the support surfaces 132 or 232, in a straight line. tion of a support axis ST provides. On the basis of the anti-rotation contours 143, the attachment 110 is held so as to be non-rotatable with respect to the support axis ST on the hand-held machine tool 200 or the further attachment 110.

The support axis ST is, for example, coaxial with an axis of rotation DX of the shaft element 121, but could in principle also have an angular position or inclination to the same.

The support body 140 is screwed to the attachment housing 113 by means of screws 146 which are inserted into the support body 140 from the end face 141 and penetrate this parallel to the support axis ST. The screw connection using the screws 146 provides an anti-twist device around the support axis ST and, in addition, a tensile fastening of the support body 140 on the attachment housing 113 with respect to the support axis ST.

A locking body 150 of the fastening device 105 is mounted pivotably about the support axis ST on the attachment housing 113. The locking body 150 is designed overall as an annular body which can be gripped by an operator on an actuating part 151, which advantageously has a handle contour 152, for example corrugation. The actuating part 151 is designed, for example, as an actuating ring. The actuating part 151 is connected in a rotationally fixed manner to a locking part 153, which is likewise annular and / or is formed by an annular body. The actuating part 151 and the locking part 153 can be in one piece or be formed by different bodies which are preferably firmly connected to one another. The actuating part 151 is arranged radially on the outside of the locking part 153 of the locking body 150. The locking part 153 has a sleeve-like annular projection 154 on which locking contours 155 are arranged, for example bayonet contours 156.

The attachment 110 can therefore be attached to the hand machine tool 200 or another attachment 110 by first bringing the anti-rotation contours 143 into engagement with the opposing anti-rotation contours 233 or 133 and the locking contours 155 by plugging along the support axis ST on the counter-locking contours 235 or 135 are inserted past and then the locking body 150 is rotated about the support axis ST, so that the locking contours 155 come into engagement with the counter-locking contours 235 or 135 and the locking body 150 assumes its locking position.

The rotational movement of the locking body 150 into the locking position is supported and secured by a spring arrangement 157, so that the locking body 150 remains in its locking position even in the event of vibrations during operation or similar other mechanical influences. The spring arrangement 157 comprises a torsion spring 158, the supporting ends 159 of which are supported on the one hand on the locking body 150 and on the other hand on the attachment housing 113 in a rotationally fixed manner with respect to the support axis ST.

Since the locking contours 155 have a large radial distance from the support axis ST, which is at the same time the axis of rotation of the locking body 150, and also on the one hand on the bayonet contours 156 and / or on the other hand on the bayonet cones 236 or 136 inclined surfaces are present which have a flat slope transversely to Have stub axle ST, a low torque is sufficient to actuate the Rie gel body 150 about the axis of rotation / support axis ST to a high tensioning force parallel to the support axis ST to brace the attachment 110 with the

To effect hand machine tool 200 or the other attachment. Even with a low spring force of the spring arrangement 157, optimal bracing with respect to the support axis ST is achieved. So that the torsion spring 158 can nevertheless have a large spring force, it forms a radially outer component with respect to the support axis ST and is located between the support body 140 and the circumferential wall 114.

The locking body 150 is to be adjusted from its locking position into its unlocking position against the spring force of the spring assembly 157. Using the handle contour 152, an operator can easily grab the latch body 150 accordingly and rotate it into the unlocked position. The spring arrangement 157 and a triggering device 160 are provided so that the locking body 150 does not have to be actuated into the locking position by the operator when the operator attaches the attachment 110 to the hand-held power tool 200 or one of its attachment 110. The release device 160 comprises a blocking body 161 which is received in the attachment housing 113 so as to be displaceable parallel to the support axis ST. The blocking body 161 has actuating contours 162, for example actuating projections 163, which protrude in a blocking position of the blocking body 161 in front of the end face 141 of the support body 140.

With respect to the support axis ST, the blocking body 161 is arranged radially outward on the peripheral wall 142 of the support body 140. The blocking body 161 has a passage opening 164 for the support body 140 on an annular section 166. In the area of the passage opening 164, anti-rotation contours 165 are provided on the blocking body 161, which are in engagement with anti-rotation contours 145 on the peripheral wall of the support body 140, so that the blocking body 161 is secured against rotation on the support body 140 with respect to the support axis ST.

Although the blocking body 161 is held non-rotatably with respect to the support axis ST on the front housing 113, it is mounted movably parallel to the support axis ST, for example mounted on the support body 140 so that it can move linearly.

The actuation projections 163 and stop projections 167 protrude from the ring section 166 of the blocking body 161 on mutually opposite sides. The stop projections 167 strike stops 118 of the attachment housing 113 when the blocking body 161 is adjusted into the attachment housing 113 along the support axis ST in the direction of a release position in which the blocking body 161 releases a rotational movement of the locking body 150 in the direction of its locking position .

Opposite to the release position, i.e. in a blocking position in which the blocking body 161 blocks an adjustment of the locking body 150 from its unlocking position into its locking position and in which the actuation projections 163 protrude in front of the end face 141 of the support body 140, the blocking body 161 is through a spring assembly 170 is loaded. The spring arrangement 170 comprises springs 171 which are directly supported in the area of the stops 118 on the attachment housing 113 and on the other hand on steps of the stop projections 167 and thus loads the blocking body 161 directly in the direction of its blocking position. Further springs 172 are supported on a support body 173 and on the attachment housing 113, also in the region of the stops 118, the support body 173 in turn loading the blocking body 161 in the direction of the blocking position.

The support body 173 provides a substantially tilt-proof support of the blocking body 161 by the springs 172 by evenly distributing their force to the stop projections 176, which penetrate through openings 174 of the support body 173 but are supported on steps 168 on the latter. Furthermore, the passage openings 174 are penetrated by the springs 171, so that they can act on the blocking body 161 in the direction of its blocking position directly and unhindered by the support body 173. The support body 173 is penetrated by the shaft element 121 at a passage opening 175.

The blocking body 161 is adjustable by an actuating gear 180 from its release position into its blocking position. The actuating gear 180 can be actuated by the latch body 150, namely by a gear body 181 of the Actuate transmission gear to 180 coupled in motion with the latch body 150 or firmly connected to it. For example, rotational drive contours 182 and 183 are provided on the gear body 181 and the locking body 150, which interlock positively and couple the gear body 181 in a rotationally fixed manner with the locking body 150 with respect to the support axis ST, which is also the axis of rotation or pivoting axis of the locking body 150.

On a side facing away from the locking body 150, the gear body 181 has a flat surface 184, into which actuating bevels 185 run obliquely, so that a step 186 is formed between a respective actuating bevel 185 and the planar surface 184.

The actuating bevels 185 and the steps 186 are used to interact with a gear body 187, which is provided for the axial adjustment of the blocking body 161 be with respect to the support axis ST. In the present case, the gear body 187 is formed by the blocking body 161 or is arranged on it. For example, the ring section 166 is designed as a gear body 187. On the gear body 187 there is also an end face 188 which is opposite the plane face 184 is provided. Actuating bevels 189 run away from the plane surface 188, a step 186 being provided between the plane of the plane surface 188 and a respective actuating bevel 189.

The gear body 181, 187 are designed for example as an annular body or rings. The gear bodies 181, 187 are penetrated by the support body 140, for example.

The actuating bevels 185, 189 run in an arc-shaped, rising manner around the support axis ST. When the locking body 150 is rotated by the

Support axis ST or its pivot axis or axis of rotation, the actuating slopes 185, 189 slide along one another.

In the blocking position of the blocking body 161, the steps 186 are in engagement with one another. The spring assembly 170 loads the blocking body 161 in the direction of the locking body 150, with the interengaging steps 186 a Ver rotation of the locking body 150 about its axis of rotation or the support axis ST is prevented.

If the actuating contours 162 and thus the blocking body 161 are actuated against the force of the spring arrangement 170 parallel to the support axis ST, the steps 186 disengage so that the locking body 150 is free to rotate and through the torsion spring 158 from its unlocked position into its locking position is twisted.

When the locking body 150 is rotated again from its locking position into the unlocking position, the actuating bevels 185, 189 slide along each other, whereby the gear body 187 and thus the blocking body 161 is adjustable by the spring assembly 170 from its release position to its blocking position. When the locking body 150 assumes its unlocked position, the spring arrangement 170 loads the blocking body 161 into its blocking position in such a way that the steps 186 of the two gear bodies 181 and 187 engage with one another and thus the locking body 150 against rotation or misunderstanding development is prevented or blocked from its unlocked position into its locked position.

In the unlocked position of the locking body 150, the drive element 123 is partially blocked against rotation about its axis of rotation, namely by a rotation blocking body 191 of a rotation blocking device 190. The rotation blocking body 191 is formed, for example, by the support body 173 of the spring arrangement 170. The support body 73 has a passage opening for the shaft element 121 and end-face form-fitting contours 192 surrounding this passage opening. These serve to engage in end-face form-fit contours 193 of a coupling body 194 which is rotatably connected to the shaft element 121. The coupling body 194 is designed, for example, as an annular body which has a passage opening penetrated by the shaft element 121, the inner circumference of which has form-fit contours 195 for the non-rotatable folding of the shaft element 121, for example form-fit contours 195 that fit positively to the rotary drive contours 123A, in particular that are specially designed as a hexagon When the spring arrangement 170 loads the blocking body 161 into its blocking position, the support body 173 is at the same time adjusted in the direction of the drive side 111, whereby the interlocking contours 192, 193 come into engagement with one another and the shaft element 121 is thus fixed in a rotationally fixed manner.

An attachment 110B has the same or similar components as the attachment 110, which are usually denoted by the same numbers as the components of the attachment 110, namely, for example, a shaft element 121B, which has a drive shaft element 123, which in turn rotates with its output element 120A is connected and bearing sections 124 and 125 for a ball bearing 126 and a sliding bearing 127 has. An attachment housing 113B of the attachment device 110B has for the shaft element 121 B bearing receptacles 116, 117 on which the bearings 126, 127 are held and received.

A locking body 150B is constructed similarly to the locking body 150 and has an actuating part 151 B, on which a handle contour 152, e.g. a corrugation, is advantageously arranged, and a locking part 150 with an annular projection 154 on which bayonet contours 156 are arranged as locking contours 155 are. The locking body 150 is loaded by a torsion spring 158 of a spring assembly 157 in a direction of rotation about its axis of rotation, which is also the support axis ST, from its unlocked position into a locking position in which the locking contours 155 can come into engagement with counter-locking contours 235 NEN or are.

E.g. The sleeve-like support body 140B is mounted displaceably in the attachment housing 113B parallel to the support axis ST.

The support body 140B differs from the support body 140 in that it is not fixed in place with respect to the attachment housing 113, but is instead movably mounted parallel to the support axis ST.

The support body 140 is loaded in the direction of the drive side 111 by a spring arrangement 170B, which comprises, for example, a helical spring 171B. The spring arrangement 170B is supported on the attachment housing 113B on the one hand and on the support body 140B on the other. On an end face 141 of its peripheral wall 143, the support body 140B has anti-rotation contours 143, for example form-locking projections 144, which are provided for positive engagement in, for example, the anti-rotation contours 233. The spring arrangement 170 thus loads the anti-rotation contours 143 in the direction of the anti-rotation position, i.e. for example to the Fland machine tool 200.

To fold the locking body 150B in its unlocking position and releasing the locking body 150B into its locking position, a release device 160B is provided, in which the support body 140B forms an essential part by performing the function of a blocking body 161B.

An end face 141 of the support body 140B has an actuation contour 162 of the blocking body 161B, e.g. the anti-rotation contours 143. The actuation contour 162 is driven in a direction of movement from the drive side 111 to the output side 112 when attaching the attachment 110B, for example to the Fland machine tool 200 actuated, whereby the blocking body 161 B is moved linearly in the direction of the support axis ST and the locking body 150B comes free of rotation and can be actuated or rotated by the torsion spring 158 out of its unlocked position in the direction of its locked position.

With the locking body 150B, a gear body 181 B is rotatably connected, for example by means of screws 182B that penetrate the locking part 153, for example a metallic ring body, and are screwed into the gear body 181. The gear body 181 has on its end face facing a gear body 187, from which the actuating bevels 185 run away, so that steps 186 are formed between the planar surface 184 and the areas of the actuating bevels 185 furthest away from the planar surface 184. These interact with steps 186 of the gear body 187, as already explained above, which are formed by the fact that actuating bevels 189 run away from the plane surface 188 opposite the plane surface 184.

When the blocking body 161 is moved linearly away from the drive side 111, the steps 186 disengage from each other so that the locking body 150B comes free of rotation and can accordingly be rotated from its unlocked position into its locked position.

Furthermore, an end face of the support body 140 opposite to the anti-rotation contours 143, which represents a stop 167B, is supported on a support stop 118B of the attachment housing 113B, so that the anti-rotation contours 143 can no longer recede further away from the drive side 111 and are accordingly firmly in place Engagement with the opposing counter-rotation lock contours, for example the counter-rotation lock contours 235, remain.

When the locking body 150 is rotated into its unlocked position from the locking position, the actuating bevels 185, 189 slide on each other ent long, the spring assembly 170B can adjust the blocking body 161 from its release position in the direction of its blocking position, in which the actuating contours 162 des Blocking body 161 B are further advanced in the direction of the drive side 111. The locking body 150, in particular its locking part 153, is preferably held by a bearing body 177 on the attachment housing 113B, which engages, for example, in a corresponding bearing groove 179 of the locking body 150B, which is present, for example, between this and the gear body 181B. The bearing body 177 is, for example, ring-shaped and sets through from the support body 140B. The bearing body 177 is fastened to the attachment housing 113B by means of screws 178 or similar other fastening means.

The support body 140 is received in the attachment housing 113B so as to be secured against rotation with respect to the support axis ST on the basis of contours 145 that prevent rotation.

The present fastening concept, which can also be referred to as a quick lock, is of course also suitable for other types of attachments.

An attachment device 510 is equipped, for example, with a speed-changing gear, so it can be referred to as a gear attachment. The attachment has the locking body 150B, the support body 140B and the other explained components of the fastening device 105B. However, the attachment 510 is not passive with regard to the rotational speed between its drive element 123 and its output element 520A, which has a tool holder 120. Rather, a gear 530, for example a planetary gear, is arranged between the drive element 123 and the output element 520A. The transmission 530 comprises a sun gear 531 which is arranged, for example, at the longitudinal end of a shaft element 521 remote from the output element 123, on which the drive element 123 is arranged. The sun gear 531 meshes with planet gears 532 which are arranged on a planet carrier 533. The planetary carrier 533 is non-rotatably connected to a shaft element 523, on the free portion of which the tool holder 120 is arranged, which protrudes in front of the attachment 150B on its output side 112. The output element 520A is rotatably mounted with respect to an attachment housing 513, for example on bearings 527, in particular special ball bearings. The shaft element 521 is rotatably mounted on or with respect to the attachment housing 513 by means of a bearing 526, for example a slide bearing. An attachment 610 with an attachment housing 613 has, for example, the fastening device 105 of the attachment 110. The attachment 610 forms an angle attachment. The attachment 610 has a shaft element 621 on which a drive element 123 is arranged. On the longitudinal end region of the shaft element 621 opposite to the drive element 123, an angular gear 630 is provided, which has bevel gears 631, 632, for example. The bevel gear 631 is rotatably connected to the shaft element 621, the bevel gear 632 with a drive shaft element 633, on the free, protruding in front of an attachment housing 613 the section a tool holder 120 is arranged. Axes of rotation DA, DB of the shaft elements 621, 633 are at right angles to one another.

The front attachments 110, 110B can be used with the guide device 20 or 20A, for example. However, a guide arrangement 270 with a guide body 271, which is designed, for example, as a handle element 272, can also be attached to the hand machine tool 200 with the aid of the attachment 110, 110B. The guide arrangement 270 can be releasably attached to the attachment 110 or 110B, but could also form a permanent part of the same. It can be seen in the drawing that the neck portion 204 of

Hand machine tool 200 is too narrow to attach a mounting bracket 280 of the guide assembly 270 to it. Accordingly, it is only the attachment 110, 11 OB that enables the guide arrangement 270 to be attached to the

Hand machine tool 200.

The mounting bracket 280 comprises a base body 281 from which the handle element 272 projects. The base body 281 and a tension body 282 opposite it are firmly connected to the longitudinal ends of a clamping ring 291 which delimits a holding receptacle 288. The clamping ring 291 comprises, for example, a steel ring, in particular a spring steel ring, a plastic ring or the like.

The base body 281 and the tension body 282 are penetrated by a clamping screw 294, the head 295 of which is received in a receptacle 283 of the tension body 282 so as to be non-rotatable. For example, on the outer circumference of the head 295 and on the inner circumference of the receptacle 283, form-fit contours, in particular six- Edge contours, intended to hold the clamping screw 294 in a way that prevents it from twisting. A nut 296 is screwed onto the clamping screw 294 and is received on or in the handle element 272 in a rotationally fixed manner.

The handle element 272 projects in front of the base body 281 at an angle to the axis of rotation D or to the longitudinal center axis of the holding receptacle 288. A longitudinal axis LG of the handle element 272 runs, for example, at right angles to the axis of rotation D of the tool holder 120. By rotating the handle element 272 about its longitudinal axis LG, which is indicated by arrows in the drawing, the nut 296 can be screwed or unscrewed onto the clamping screw 294, so that the Zugkör by 282 and the base body 281 are moved towards or away from one another, the cross section of the holding receptacle 288 being narrowed or widened in the sense of clamping the attachment 110, 110B. In the latter case, the attachment 110, 110B can be pulled out of the holding receptacle 288 designed as a plug-in receptacle.

The aforementioned fastening devices 105, 105B enable the attachments 110, 110B to be fastened quickly and easily to the

Hand machine tool 200, so that the attachments 110, 110B with guide arrangement 270 arranged on it can easily be fastened to the hand machine tool 200 or can be detached from it. The guide device 20, 20A can also be attached to or detached from the hand machine tool 200 just as quickly.

Furthermore, the attachment 110, 110B also enables, so to speak, an extension of the drive train of the hand-held machine tool 200 in the direction of its axis of rotation D. For example, a further attachment can be attached to the output element 120A, e.g. an angle attachment 450 can be attached. The angle attachment 450 has, for example, a bayonet ring in the manner of the locking body 150, the locking contours of which can be brought into engagement with the counter-locking contours 135.

Claims

Expectations

1. Attachment (110) for a hand machine tool (200), in particular a screwdriver or drill, wherein the attachment (110) has a Vorsatzge housing (113) and on a drive side (111) a drive element (123) which is connected to a Machine output element (221) of the hand machine tool (200) for driving the attachment (110) can be coupled and for driving a work tool (242) is fixedly connected to an output element (120A) of the attachment (110) or coupled in motion via a gear (530) The attachment device (110) on the drive side (111) has a fastening device (105) for detachable attachment to the hand machine tool (200), the fastening device (105) having at least one fixed with respect to the attachment housing (113) Support surface (232) for support on the hand machine tool (200) in the direction of a support axis (ST) and at least one between a locking position and an unlocking position v can be created and loaded by a Federan arrangement (157) in the locking position locking body (150) with at least one locking contour (155) which in the locking position in engagement with a counter-locking contour (235; 135) the

Hand machine tool (200) is out of engagement with the hand machine tool (200) when the at least one support surface (232) is supported on the hand machine tool (200) and in the unlocked position for removing the attachment (110) from the hand machine tool (200) the counter-locking contour (235; 135), characterized in that the locking body (150) is rotatably mounted about the support axis (ST) for adjustment between the locking position and the unlocking position.

2. Attachment according to claim 1, characterized in that a tool holder for the working tool (242) is arranged on the output selement (120A) so that the drive motor (210) of the hand machine tool (200) can drive the work tool (242) via the attachment (110).

3. Attachment according to claim 1 or 2, characterized in that the locking contour (155) for engagement with a counter-locking contour (235; 135) of the hand-held machine tool (200) is provided and / or designed, the Lich a machine housing (201) of the hand machine tool (200) is stationary.

4. Attachment according to one of the preceding claims, characterized in that the locking body (150) and the drive element (123) with respect to the attachment housing (113) or on the attachment housing (113) are rotatably mounted independently of one another and / or are rotationally decoupled from one another.

5. Attachment according to one of the preceding claims, characterized in that the at least one locking contour (155) is or comprises a bayonet contour (156) and / or has an arcuate course and / or extends in a ring around the support axis (ST) and / or includes a locking cam.

6. Attachment according to one of the preceding claims, characterized in that the at least one locking contour (155) has at least one clamping contour, in particular a clamping slope or a clamping ramp, for clamping the attachment with the hand machine tool (200).

7. Attachment according to one of the preceding claims, characterized in that the locking body (150) is designed as an annular body extending around the support axis (ST) in a partially ring-shaped or ring-shaped manner.

8. Attachment according to one of the preceding claims, characterized in that the at least one locking contour (155) comprises at least two locking contours (155) arranged at an angular distance on the locking body (150).

9. Attachment according to one of the preceding claims, characterized in that the locking body (150) when the attachment (110) is arranged on the hand machine tool (200) cannot be actuated from the locking position in the direction of the unlocking position and / or that at one of the

Hand machine tool (200) facing side of the locking body (150) no actuating surface or actuating slope is arranged, based on which a Kon ture of the hand machine tool (200) can actuate the locking body (150) from the locking position towards the unlocking position.

10. Attachment according to one of the preceding claims, characterized in that the locking body (150) has at least one grip contour (152) which can be grasped by an operator.

11. Attachment according to one of the preceding claims, characterized in that the spring arrangement (157) comprises a torsion spring penetrated by the support axis (ST), which is supported on the one hand on the attachment housing (113) and on the other hand the locking body (150).

12. Attachment according to one of the preceding claims, characterized in that the drive element (123) is arranged in an interior of the spring arrangement (157) and / or the locking body (150).

13. Attachment according to one of the preceding claims, characterized in that there is at least one anti-rotation contour (143) for supporting the attachment (110) on the non-rotatable with respect to the support axis (ST)

Hand machine tool (200) which, when the attachment (110) is mounted on the hand machine tool (200), is in engagement with a counter-rotation lock contour (233) of the hand machine tool (200).

14. Attachment according to claim 13, characterized in that the at least one anti-rotation contour (143) is arranged in an interior of the locking body (150).

15. Attachment according to claim 13 or 14, characterized in that the at least one anti-rotation contour (143) is stationary with respect to the attachment housing (113).

16. Attachment according to claim 13 or 14, characterized in that the at least one anti-rotation contour (143) is mounted displaceably in the direction of the support axis (ST).

17. Attachment according to claim 16, characterized in that it has at least one support stop (118B) for the at least one anti-rotation contour (143) on which a body of the attachment (11 OB), which has the anti-rotation contour (143), strikes when the at least one Anti-rotation contour (143) in engagement with the counter-anti-rotation contour (233) of the

Hand machine tool (200) is.

18. Attachment according to claim 16 or 17, characterized in that the at least one anti-rotation contour (143) by a spring arrangement (170) in the direction of an engagement in the counter-anti-rotation contour (233) of the

Hand machine tool (200) provided engagement position is loaded.

19. Attachment according to one of claims 13 to 18, characterized in that the at least one anti-rotation contour (143) designed in particular as a toothing and in the direction of the support axis (ST) in front of an end face of the attachment (110) protruding form-locking projections (144) for engagement in form-fitting receptacles of the hand machine tool (200) and / or that the at least one anti-rotation contour (143) extends arcuately or star-shaped around the support axis (ST).

20. Attachment according to one of claims 13 to 19, characterized in that the at least one anti-rotation contour (143) is arranged on a sleeve body or sleeve-like support body (140, 140B).

21. Attachment according to one of the preceding claims, characterized in that there is a triggering device (160) for triggering a movement of the Lock body (150) from the unlocked position into the locked position, the release device (160) having a blocking body (161) which in a blocking position holds the locking body (150) against the force of the Federanord voltage (157) in the unlocked position and through an operating action can be brought into a release position in which the blocking body (161) releases the locking body (150) for movement out of the unlocking position in the direction of the locking position.

22. Attachment according to claim 21, characterized in that the blocking body (161) is longitudinally displaceable, in particular parallel to the support axis (ST), and / or rotatably mounted on the attachment housing (113) or with respect to the Vorsatzgehäu ses (113).

23. Attachment according to claim 21 or 22, characterized in that the blocking body (161) is loaded by a spring arrangement (170) in the direction of the blocking position.

24. Attachment according to one of claims 21 to 23, characterized in that the blocking body (161) has an actuating contour (162) which can be actuated by the Fland machine tool (200) to actuate the blocking body (161) from the blocking position into the release position having.

25. Attachment according to one of claims 21 to 24, characterized in that the at least one anti-rotation contour (143) is arranged on the blocking body (161) and / or is designed to actuate the blocking body (161) from the blocking position into the release position.

26. Attachment according to one of claims 21 to 25, characterized in that between the locking body (150) and the blocking body (161) an Actuate transmission gear (180), in particular a deflection gear, is arranged, based on which the locking body (150) at a Adjustment from its locking position into its unlocking position releases or actuates the blocking body (161) for adjustment from its release position into its blocking position.

27. Attachment according to claim 26, characterized in that the deflection gear is a bevel gear and / or a rotary movement of the locking body pers (150) about the support axis (ST) in a linear movement of the blocking body (161) parallel to the support axis (ST ) deflects or releases and / or has inclined surfaces (185, 189) for engagement with one another.

28. Attachment according to one of the preceding claims, characterized in that between the drive element (123) and the output element (120A) no torque-converting or speed-changing component is angeord net or that the transmission (530, 630) is a speed-changing transmission, in particular a special one Planetary gear, and / or an angular gear is arranged and / or that axes of rotation (DA, DB) of the drive element (123) and the output element (120A) are angular to one another or have a parallel spacing from one another.

29. Attachment according to one of the preceding claims, characterized in that on an output side of the attachment (110) having the output element (120A), fastening means (130A) are arranged which are compatible with the fastening device (105) and a support body (130 ) for supporting the support surface (232) of the fastening device (105) and a counter-locking contour (235; 135) for engaging the at least one locking contour (155) of the fastening device (105).

30. Attachment according to one of the preceding claims, characterized in that it has a rotation blocking device (190) for the drive element (123) which is coupled to the bolt body (150) and which assumes a rotational blocking position in the unlocking position of the bolt body (150) the drive element (123) fixes in a rotationally fixed manner and in the locking position of the bolt body (150) assumes a rotation release position and releases the drive element (123) to be rotatable.