EP2851161B1 - Handheld machine tool and device with a tool support surface - Google Patents

Description

The invention relates to a hand-held power tool, in particular an oscillating hand-held power tool, according to the preamble of claim 1. The invention further relates to an abutment device for use on such a hand-held power tool.

Such a hand machine tool and a corresponding investment device go out DE 10 2008 055 074 A1 out.

It is known, for example in routers, that they have a table, that is to say a contact body, which can be supported on the upper side of a workpiece. The milling head protrudes in front of the table down to the workpiece, wherein the housing of the router in the manner of a carriage, guided on rods, in the direction of the workpiece is linearly movable.

For flat, plate-like tools, for example, swing back and forth, so oscillate, the leadership of the tool is essential for the quality of the work result. Thus, therefore, the known carriage-like abutment device for Oszillationshandwerkzeugmaschinen not suitable.

It is therefore the object of the present invention to propose a hand-held machine tool, in particular a Oszillationshandwerkzeugmaschine, as well as a system for this device, which allow an improved tool guide.

To solve the problem, a hand-held machine tool according to the technical teaching of claim 1 is provided.

An inventive apparatus for a hand-held machine tool, in particular a Oszillationshandwerkzeugmaschine having a housing and disposed in the housing drive for driving a tool holder, which is arranged on a tool shaft and on which a particular configured as a cutting tool or drilling tool tool is detachably mounted, wherein the tool holder and an abutment body of the abutment device relative to one another by means of a guide assembly are adjustable by means of a guide assembly, wherein the abutment body has a contact surface for abutment with a workpiece to be machined with the hand machine tool, wherein the abutment device forms a system component of a system comprising a mounting bracket for releasably mounting the abutment device comprises, wherein the mounting bracket on the hand-held machine tool is releasably attachable or forms a part of the hand-held machine tool, sic h characterized in that extends next to the contact surface a tool support surface for supporting a flat side of the tool.

It is a basic idea of the present invention that the tool support surface supports the tool on its flat side, so that it is laterally supported on penetration into the workpiece and substantially better work results can be achieved.

The tool support surface may be integrally provided on the contact body. It is also possible for the tool support surface to be provided on a tool support body which is in particular firmly connected to the contact body.

The tool support surface contributes, in particular in combination with an additional tool guide, a magnet or the like, but also without such additional guidance that vibrations of the tool or the saw blade are reduced. As a result, tears on the workpiece are significantly reduced or do not occur at all.

Further, it is possible that a Tiefeneinstellskala is provided, for example on a guide rod of the guide assembly.

The abutment body could be detachably arranged on the guide arrangement, for example clamped by means of a clamping device with a guide rod of the guide arrangement. But it is also possible that, for example, guide rods of the guide assembly with the plant body are firmly connected, for example screwed or pressed.

The abutment body can be positioned very favorably on a workpiece marking, for example a tear line, attached to the workpiece, so that the tool cuts or penetrates precisely at this marking in the workpiece. This orientation is already possible if the tool is still from the workpiece is removed, for example, the housing of the hand-held machine tool is furthest away from the system body.

Based on the tool support surface, the tool has an angular position to the workpiece, so that exact cuts are possible. If the tool, for example the saw blade, is not quite accurate in angle, the tool support surface, for example in combination with an additional magnet, which will be described below, contributes to optimizing the tool / saw blade with respect to the abutment body and thus the Workpiece is positioned and angular errors of the tool are compensated.

Advantageously, additional markings, for example outer surfaces serving as orientation, line markings and the like, are provided on the contact body. Based on these markings, it is possible to position the abutment body so exactly on the workpiece, so that the subsequent saw cut is made by the tool at the desired location.

The tool may advantageously be opposite the tool support surface at least partially or completely free, so that another side of the tool, which is opposite to the flat side against which the tool rests against the tool support surface, is visible above the workpiece, for example directly above a cutting edge. Thus, the operator can very closely view the cut which he makes with the hand-held machine tool. It can very easily edge-sided cuts, for example, along a skirting board, performed.

It is possible that the tool support surface is opposite a transparent portion of the contact body, so that one of Flat side, which is supported on the tool support surface, opposite side of the tool above the workpiece, for example, above the cutting edge, is clearly visible. Thus, therefore, this other side of the tool does not necessarily have to be free, but there may be provided a transparent portion of the abutment body or a component connected to the abutment body, which is also simplified as an abutment body.

An advantageous embodiment of the invention provides that the tool support surface is provided at an end of the tool furthest from the tool holder or the tool holder. About acting on the tool leverage forces are thereby optimally absorbed.

Preferably, an additional tool guide is provided, for example of a mechanical type, which has at least one guide surface away from the tool support surface. Thus, at least one additional guide surface is provided in addition to the workpiece support surface.

For example, such a tool guide may comprise at least one U-shaped guide receptacle into which the tool is inserted with a narrow side. For example, two such guide receptacles are provided opposite one another, in which the tool oscillates, as it were, back and forth or is rotatably received.

The at least one guide surface can therefore also comprise a guide surface opposite the tool support surface, so that the tool is guided between the tool support surface and the opposite guide surface. This guide surface may be provided on a transparent portion of the contact body.

At this point, it should be mentioned that the contact body does not necessarily have to be in one piece, but may also have several sections or elements, for example solid, non-transparent sections, but also transparent sections.

The abutment body is preferably designed as a kind of table or plate or has such a plate. Thus, the contact body can be placed over the entire surface of the workpiece. Preferably, a type of rubber or other elastic surface is provided on the contact surface, so that the workpiece is not damaged.

The tool guide, as already mentioned, is expediently arranged wholly or partly between the tool support surface and the tool holder. Therefore, it is therefore at least partially above the tool support surface. In this way it is possible, for example, that further below, the tool support surface opposite, no view of the operator on the cutting edge obstructing component is provided.

A very efficient and realized in the embodiment according to the drawing embodiment provides that in the region of the tool support surface at least one magnet, for example a permanent magnet, electromagnet or both, is arranged, which generates a tool in the direction of the tool support surface attracting magnetic field , Thus, therefore, the tool is always pulled in the direction of the support surface and is there flat. The magnet or the magnets can be arranged, for example, behind or above the support surface.

Appropriately, it is provided that the tool support surface comprises a front of a side surface of the contact body projecting narrow support edge or is formed thereby. Is advantageous in any case, a narrow, preferably linear support contour. The friction between the tool support surface and the tool is thereby reduced.

The contact body is expediently spring-loaded in the direction of the tool holder away by a spring arrangement. Consequently, the spring arrangement thus pushes the contact surface away from the housing of the hand-held machine tool.

It is preferred if the manual machine tool has at least one longitudinal fixing device for fixing the contact body in at least one longitudinal position with respect to the tool holder and / or at least one stop device for limiting movement of the tool holder in at least one longitudinal position with respect to the contact body. Beilspielsweise the attachment device of the type is fixed, that the contact surface occupies a longitudinal position, which is farthest from the tool holder. But also the as it were completely retracted state is preferably fixable, i. that the tool holder and the contact body or its contact surfaces are closest to each other.

The abutment body or depth stop can be fixed, for example, in its longitudinal direction, that is to say with respect to the spacing of the abutment surface or abutment surface for the tool receptacle, for example by means of a clamping device and / or latching device. In any case, it is expedient if the depth stop or stop body in the fully extended or retracted position or both can be fixed, for example, clamped, latched or both.

The guide arrangement expediently comprises or forms a linear guide The longitudinal fixing device or the stop device expediently has a clamp or an adjustable stop projection or a stop projection which is adjustable in a movement path of a guide rod of the guide arrangement. For example, such a clamp is attachable to a guide rod of the guide assembly. When a carriage carrying the hand machine tool travels along this rod, it hits against this clamp so that the depth of penetration of the tool into the workpiece is limited. Also, a corresponding catch, which is adjustable in the path of movement of a rod, can cause a length limitation or limitation of the extension movement or retraction movement.

The abutment device expediently requests a depth stop forms a depth stop, with which a penetration depth of the tool can be limited in the workpiece.

An embodiment of the invention shown concretely in the drawing provides that the abutment device comprises a machine carriage for holding the housing of the hand-held machine tool, which is movable relative to the at least one, for example, designed as a table, plant body on the basis of the guide arrangement. The machine carriage is guided with the housing of the hand-held machine tool guided by the guide arrangement relative to the abutting in use on the workpiece bearing body. This embodiment of the invention may also be referred to as a piecing aid or piecing device.

Although it is possible that the abutment device forms an integral part of the hand-held machine tool, that is permanently arranged thereon.

However, a detachable configuration is preferred. The hand-held power tool and the abutment device expediently form part of a system which has a mounting bracket for detachably mounting the abutment device, wherein the mounting bracket comprises a holding receptacle penetrated by the tool shaft and the abutment device has a laterally open receiving mouth at a connection section which is transverse to one Longitudinal direction of the tool shaft when arranged on the tool holder tool in engagement with the holding receptacle can be brought, so that the abutment device with mounted tool on the hand-machine tool can be mounted and is removed from this again. It should be noted that the assembly and disassembly without the tool must be removed from the tool holder, is advantageous. But it is also possible that just no laterally open receiving mouth is present, but that, for example, an annular flange or a ring receptacle is provided which is placed on a housing projection or the tool shaft of the hand-held machine tool. Thus, therefore, the lateral receiving mouth does not exist.

It is a basic idea here that the system does not have a closed, annular connection element, but a laterally open connection element, namely with a receiving mouth. By means of a suitably present fixing device or locking device, it is possible to firmly lock the abutment device with the housing of the hand-held machine tool or to fix it firmly. The assembly or disassembly thus happens laterally past the tool, which can accordingly remain on the tool holder.

The investment device is preferably without tools or without assembly tool, eg without Allen key, mounted on the mounting bracket. Conveniently, an actuation of Mounting means for mounting the abutment device to the mounting bracket and for dismantling with reference to a latch, a thumb screw or the like provided.

Furthermore, it is possible that the mounting bracket forms an integral part of the hand-held machine tool or is designed as a front adapter, which is detachably fastened to the housing of the machine tool, for example screwed.

The drive of the hand machine tool is expediently an oscillation drive. Consequently, therefore, the tool holder and the optionally arranged there tool pivots about a tool shaft axis, namely the axis of the tool shaft and its longitudinal axis back and forth.

The one tool longitudinal axis of the tool and the tool shaft axis are suitably angled with respect to each other, e.g. obliquely or at right angles.

Conveniently, the longitudinal axis or longitudinal axis of the tool and the longitudinal axis of the housing are in mutually parallel planes.

An assembly axis, along which the Anlagevorrichturig is mounted on the mounting bracket, is conveniently located between the longitudinal axis of the housing and the longitudinal axis of the tool.

The tool is expediently an oscillating tool, in particular a cutting and / or drilling oscillating tool. The tool is preferably substantially plate-like and has a cutting edge on a narrow side.

The holding receptacle is expediently arranged on an outer circumference of the tool receptacle. Preferably, the holding receptacle is located on a machine projection which projects, for example, in front of the housing of the hand-held machine tool.

The mounting bracket may form an integral part of the hand machine tool, such as its housing, an outer periphery of the tool shaft or the like.

However, a concept is preferred such that the mounting bracket is designed as a detachable, for example by means of a screw and / or jamming and / or latching or the like, attachable to the housing of the hand-held machine attachment adapter for fixing the investment device. However, the mounting bracket can remain on the hand-held machine tool. You can operate the hand-held machine tool without the adapter, so that just no installation of the system is possible, but also with the adapter, so that you can easily mount the investment device on the hand-machine tool or remove it again. The assembly or disassembly happens very fast.

Preferably, the holding receptacle and the receiving mouth located in engagement with the holding receptacle are components of a rotary bearing or together form a rotary bearing, so that the abutment device and the housing of the hand-held machine tool can be rotated relative to one another.

The rotary bearing is preferably designed such that the abutment device is rotatable in a first rotation angle range in which the abutment device is rotatable relative to the housing of the hand-held machine tool for workpiece machining, eg for alignment with the tool and / or workpiece and is held captive on the mounting bracket, in a second rotation angle range, which is provided for disassembly of the abutment device from mounting bracket and mounting the abutment device to the mounting bracket, radially relative to the mounting bracket is free to move. The first rotation angle range includes, for example, angular positions of about 0-120 ° or 0-140 ° starting from a central position. The middle layer corresponds for example to a longitudinal axis of the housing of the hand-held machine tool. When the abutment is rotated out of this first range of rotational angle, it can be removed from the mounting bracket.

On the basis of the pivot bearing, it is possible to rotate the Längsachspositionen on the one hand of the investment device and on the other hand, the hand machine tool relative to each other, for example, to adjust the investment device in a favorable position with respect to the workpiece and / or the tool.

A further advantageous embodiment of the invention provides that holding contours are provided between the holding receptacle and the receiving mouth or any other place between on the one hand the mounting bracket and on the other hand, the contact device, for example, the terminal portion and the receiving mouth in the holding receptacle between a release position, in which the Holding contours are disengaged and the abutment device is removable from the holding receptacle, and a use position in which the holding contours intermesh and the abutment device is not removable from the holding receptacle, are rotatable. The holding contours include, for example, interlocking teeth, threaded sections, bayonet hooks or - as in the embodiment according to the drawing - locking projections, which are guided over a predetermined rotation angle range in a guide channel.

At the holding receptacle and / or the receiving mouth is expediently at least one rotation angle coding for mounting the abutment device on the holding receptacle in a predetermined angular position. In this way, the abutment device can be defined according to the respective rotation angle coding with respect to the housing of the hand-held machine tool in defined rotational angle positions. For example, the rotation angle codings are mechanical rotation angle codings, e.g. Locking contours or locking recesses. It is also possible that the rotation angle codes include optical rotation angle marks, arrows and the like.

It is preferred if the hand-held machine tool and / or the abutment device has at least two rotational angle positions of the abutment device relative to the housing of the hand-held machine tool associated rotational angle codes, which are associated with different, for example predetermined, tool angular positions in which the tool the tool holder is mountable. For example, holding contours associated with certain angular positions or angular positions are provided on the tool holder, for example its tool holder, for example in the form of a polygon. The abutment device can be set to the correct angle with respect to the tool according to the rotational angle encodings provided between it and the housing of the hand-held machine tool or the mounting bracket on the housing of the hand-held machine tool. The angular position of the abutment then corresponds to the angular position of the tool. For example, the tool and the abutment device may have mutually parallel longitudinal axes that are oriented obliquely to a longitudinal axis of the housing of the hand-held machine tool.

Preferably, a clamping device or a latching device or both is provided, with which the abutment device can be clamped or latched to the mounting bracket. In turn, one, two or further predetermined angular positions or rotational angle encodings in which the locking or clamping is possible are preferred.

The latching device expediently has at least one resilient latching projection, for example a latching pawl. The at least one latching projection can be brought into engagement with at least one latching receptacle. It is possible that the latching projection on the holding receptacle and the at least one latching receptacle are provided on the receiving mouth. But even the reverse configuration is possible, namely that the locking receptacle is arranged on the holding receptacle and the latching projection on the receiving mouth. Also combinations of both variants are possible. The resilient latching projection may e.g. be designed as a spring-loaded, linearly movable latch or as a pivot lever.

The latching projection is expediently engageable with the at least one latching receptacle by a rotary movement, for example about the longitudinal axis direction of the tool shaft. By a simple rotational movement so the contact device and the machine tool are engageable with each other.

Preferably, at least one inclined surface, for example on the latching projection or the latching receptacle or both, is provided, which extends transversely to an engagement axis for deflecting the at least one latching projection in a remote from the at least one detent recess disengaged position along which the latching projection engages the at least a catch receptacle can be brought.

The at least one inclined surface may, for example, be designed such that the latching projection and the latching receptacle can be disengaged in the event of a shock load, in particular if the hand-held machine tool falls to the ground.

The or at least one inclined surface can serve to deflect the at least one latching projection during assembly of the two components by a rotational movement of the receiving mouth relative to the holding receptacle.

An expedient embodiment of the invention provides e.g. in that the latching projection, in particular by an inclined surface arrangement, automatically moves into a deflected position, in which a surface adjacent to the latching receptacle can be moved past the latching projection. It is for example possible that when mounting the abutment device on the mounting bracket of the locking projection is so to speak automatically deflected so that it can slide past the surface next to the locking receptacle and then engages in the locking receptacle. For example, an inclined surface is located laterally next to the latching receptacle and acts, so to speak, as a ramp, which deflects the latching projection when the receiving mouth pivots about the mounting bracket. The at least one inclined surface thus forms a kind of insertion bevel or assembly aid.

The holding receptacle is expediently configured as a ring receptacle or circumferential groove extending annularly around the tool receptacle or has such a receptacle or circumferential groove.

The circumferential groove or ring receiver is expediently U-shaped in cross-section or L-shaped or T-shaped. It is possible, for example, for the ring receiver to be an annular or partially ring-shaped one Has web, so to speak T-shaped, wherein the web, so to speak, from the counterpart, which is provided on the receiving mouth, is embraced.

An advantageous embodiment can protrude that a peripheral wall is arranged opposite a bottom of the circumferential groove or ring receptacle, so that a guide channel which radially supports the receiving jaw with respect to the longitudinal axis direction of the tool shaft and is guided in the sense of rotation about the tool shaft is formed. Thus, therefore, the abutment device is rotatable relative to the housing or mounting bracket, but can not be moved radially outward away. Consequently, then a kind of closed pivot bearing is then formed.

An expedient embodiment of the invention provides that at least one tooth of the latching device is received as a slide follower in the guide channel.

Figur 1

eine perspektivische Schrägansicht einer Hand-Werkzeugmaschine mit montierter Anlagevorrichtung, bevor das Werkzeug in ein Werkstück eindringt,

Figur 2

die Anordnung gemäß Figur 1, jedoch bei bereits in das Werkstück eingetauchtem Werkzeug,

Figur 3

einen vorderen Teil der Hand-Werkzeugmaschine gemäß Figuren 1,2 in unterschiedlichen Längspositionen bezüglich eines Anlagekörpers der Anlagevorrichtung,

Figur 4a

die Anlagevorrichtung der vorstehenden Figuren, während sie seitlich an die Hand-Werkzeugmaschine herangeführt wird, bis sie in

Figur 4b

an Hand-Werkzeugmaschine angeordnet ist,

Figur 5

eine perspektivische Schrägansicht einer Montagehalterung und der Anlagevorrichtung gemäß vorstehender Figuren von schräg unten,

Figur 6

einen vorderen Werkzeugabschnitt der Hand-Werkzeugmaschine mit der Montagehalterung,

Figur 7

die Montagehalterung gemäß Figur 6 perspektivisch schräg von oben,

Figur 8

eine Schnittdarstellung der Montagehalterung gemäß Figur 7, etwa entlang einer Schnittlinie A-A,

Figur 9

die Hand-Werkzeugmaschine mit demontierter Werkzeughalterung von schräg oben, die in

Figur 10

von schräg unten dargestellt ist,

Figur 11

eine untere Ansicht der Hand-Werkzeugmaschine und der Anschlagvorrichtung, wobei deren Längsachsen zueinander winkelig sind,

Hereinafter, an embodiment of the invention will be explained with reference to the drawing. Show it:

FIG. 1

3 is an oblique perspective view of a hand-held machine tool with mounted abutment device before the tool penetrates into a workpiece;

FIG. 2

the arrangement according to FIG. 1 but with tool already immersed in the workpiece,

FIG. 3

a front part of the hand machine tool according to Figures 1,2 in different longitudinal positions with respect to an abutment body of the abutment device,

FIG. 4a

the abutment device of the preceding figures, while it is brought laterally to the hand-held machine tool until they are in

FIG. 4b

arranged on hand machine tool,

FIG. 5

an oblique perspective view of a mounting bracket and the abutment device according to the above figures obliquely from below,

FIG. 6

a front tool section of the hand machine tool with the mounting bracket,

FIG. 7

the mounting bracket according to FIG. 6 in perspective obliquely from above,

FIG. 8

a sectional view of the mounting bracket according to FIG. 7 , approximately along a section line AA,

FIG. 9

the hand machine tool with disassembled tool holder obliquely from above, in

FIG. 10

shown diagonally from below,

FIG. 11

a bottom view of the hand machine tool and the stop device, wherein the longitudinal axes are angled to each other,

A hand-held power tool 10 is, for example, an oscillating hand-held power tool, but could for example also be designed as a handsaw. A drive 11 of the hand-held power tool 10 comprises a drive motor 12 and expediently also a gear 13, which has a tool shaft 14 at its output. Alternatively, a direct drive would be possible, ie, for example, that the tool shaft directly forms a part of the drive motor 12.

At the free end of the tool shaft 14 is a tool holder 15 to which a tool 40 is releasably fastened.

The drive 11 is received in a housing 16 of the hand-held power tool 10. With the drive 11 is an oscillating movement 17 of the tool holder 15 and thus of the tool 40 can be generated (indicated by an arrow). The oscillatory movement 17 is an alternating pivotal movement about a longitudinal axis direction 18 of the tool shaft 14.

The transmission 13 includes, for example, a reduction gear, an angle gear or the like. The drive 11 is, at least as regards the gear 13, arranged in a front housing portion 19 of the housing 16. At the front housing portion 19, a handle portion 20 connects, which is provided for gripping the hand-held power tool 10. Consequently, therefore, the housing portion 19 and the handle portion 20 along a housing longitudinal axis 21 are arranged one behind the other or side by side.

At the remote from the tool holder 15 longitudinal end of the hand-held power tool 10 electrical connections 22, for example, for an electric power cable, are provided. Of course, the hand-held power tool 10 could also be configured as a machine tool to be operated wirelessly and (not shown) have an energy store, for example an electric accumulator, on board. Only indicated is an electrical switch 23 in the handle portion 20, which can be actuated by an operator to turn on the drive 11, turn off and expediently set its speed.

The housing longitudinal axis 21 and the longitudinal axis 18 of the tool shaft 14, ie the tool shaft axis, are mutually angled, for example, at right angles. The tool 40 projects forward or laterally from the housing 16 having a longitudinal shape. A tool longitudinal axis 54 of the tool 40 and the longitudinal axis 18, ie the tool shaft axis, are mutually angular, for example at right angles. The housing longitudinal axis 21 and the tool longitudinal axis 54 are expediently in mutually parallel planes.

The tool holder 15 is provided on a machine projection 24 on an underside 25 of the housing 16. Thus, therefore, the machine projection 24 from the housing 16 is slightly off.

The tool 40 is presently a sawing tool and has a plate-like shape. Extending from a mounting portion 41 is a blade body 42, the free end portion 43 of which has a cutting edge 52, e.g. is provided with a knife contour and / or saw teeth, that is configured for the production of saw cuts. An end face of the free end region 43, on which the saw teeth are arranged, is rectilinear here, but could of course also be curved or bent.

Between the plate-like mounting portion 41 and the blade body 42, a step 44 is still provided. The step 44 ensures that a plane E1, in which the blade body 42 extends, is offset from a plane E2 of the mounting portion 41.

The tool holder 15 includes a tool holder 26 into which a mounting pin 27 can engage. The tool holder 26 is arranged at the front of the tool shaft 14 and has at her Inner circumference a toothing 28. Teeth 29 of the toothing 28 correspond in shape and spacing with teeth 49 of a toothing 48, which are provided on an inner periphery of a passage opening 50 of the tool 40.

The fastening pin 27 has a head 30, from which a bolt portion 31 protrudes. At the free end portion of the pin portion 31 form-fitting contours 32 are provided which are engageable with corresponding, not visible in the drawing form-fitting contours by an operating lever 33 is pivoted at the top of the housing 16 by means of a pivot bearing 34 (indicated by a double arrow), wherein in the pivoted away from the housing 16 release position of the actuating lever 33, the form-fitting contours inside the housing 16, the bolt portion 31 is released, while in the in FIG. 9 illustrated clamping position of the actuating lever 33 of the mounting pin 27 is pulled into the tool holder 26, whereby the mounting portion 41 of the tool 40 between an end face 35 of the tool shaft 14 or the tool holder 26 and the head 30 of the mounting pin 27 is stretched. In addition, teeth 36 are provided on the head 30, which engage positively in the clamping position of the fastening pin 27 in the distances between the teeth 29 of the tool holder 26 and the teeth 49 at the passage opening 50, so that the tool 40 held against rotation on the tool holder 15 is. Of course, this type of attachment is to be understood as an example, ie, for example, an attachment with a clamping nut, screw or the like would be readily possible. Interesting in any case is the proposed tool holder 15, which represent the teeth 29, so to speak rotary angle encodings or defined angular positions, in which the tool 40 can be attached to the tool holder 15 and in each case assumes a predetermined angular position.

On the tool holder 15 and the machine projection 24, a mounting bracket 60 may be attached, which serves for releasably securing a contactor 100.

The mounting bracket 60 has a fixing body 61 which is substantially plate-shaped. In any case, the fastening body 61 can be secured to the underside 25 of the housing 16, for example by means of 2 screws 62 which are inserted through corresponding openings on the fastening body 61 and screwed into screw receptacles 37 on the underside 25 of the housing 16.

From the mounting body 61 is a sleeve portion 63 from which has a passage opening 64 for the tool shaft 14, at least the tool holder 15. An end face 65 of the mounting bracket 60, e.g. the sleeve portion 63, is aligned approximately with the end face 35 of the tool holder 26 when the mounting bracket 60 is secured to the housing 16.

At the housing 16 facing or associated bottom, the mounting bracket 60 has a receptacle 66, in which the machine projection 24 can dive positive fit. The machine projection 24 is fixed together with the two screws 62, the mounting bracket 60 captive and rotationally fixed to the housing 16 of the hand-held machine tool 10. Of course, even more form-fitting contours, frames or the like could be provided so that the mounting bracket 60 holds well on the housing 16. There are also locking devices, clamping devices or the like other fasteners of a mounting bracket according to the invention on the machine housing possible, but this is not realized in the embodiment. Furthermore, it is also possible that retaining contours, as will be described later in connection with the mounting bracket 60, directly form part of the hand-held power tool 10, for example are arranged on the housing 16. For example, the sleeve portion 63, which provides a retaining receptacle 67 for the abutment 100, could be integrally and fixedly connected to the housing 16. The advantage of the detachable mounting bracket 60, however, is that it is mounted to the housing 16 only when needed, but otherwise it may remain in the workshop, for example.

The abutment device 100 is releasably attachable to the mounting bracket 60. The abutment device 100 has a connection section 110 and a contact body 150 which are movable relative to one another on the basis of a guide arrangement 180. The guide arrangement 180 guides the movement of the connection section 110 with respect to the contact body 150. In the present case, the guide arrangement 180 leads linearly, namely along a guide axis 181. The guide axis 181 is simultaneously the longitudinal axis of the abutment device 100.

The guide assembly 180 includes, for example, guide rods 182 that are immersed in guide sleeves 183 that are connected to the terminal portion 110, such as bolted, welded, or as integral as present. The connecting portion 110 is located between the two guide sleeves 183, which receive the guide rods 182 movable, namely along the guide shafts 181.

The contact body 150 is loaded in a direction away from the connection section 110 by a spring arrangement which, for example, comprises springs 184 arranged in the interior of the guide sleeves 183. The springs 184 are based on the one hand on a closed end or bottom 185 of the guide sleeves 183 and on the other hand on the immersed in the guide sleeves 183 longitudinal ends of the guide rods 182.

The other longitudinal ends of the guide rods 182 are fixedly connected to the contact body 150, for example, inserted into these and / or glued and / or pressed and / or screwed with these.

The abutment body 150 is designed as a kind of setting table, so that the abutment device 100 can be used in total as a kind of piecing aid. The contact body 150 is, for example, plate-like. The contact body 150 has, for example, a contact surface 151, which is substantially planar. For example, a rubber coating or at least an elastic and / or slip-resistant coating 154 is provided on the abutment surface 151 in order not to damage a workpiece W when the abutment device 100 is parked thereon or the workpiece is processed with the hand-held machine tool 10 or in order to prevent the abutment device 100 from slipping on the workpiece W.

The lining 154 has, for example, a resilient nub structure 152, wherein the nubs are preferably frontally planar, so that in any case the contact body 150 can be securely applied to the workpiece W.

It is within the scope of the invention, not only in the embodiment according to the drawing, also possible that just a sliding is desired, that is provided instead of the anti-slip lining a sliding coating which can slide on the workpiece W. In this way, the hand-held machine tool can be guided along the workpiece, for example during workpiece machining.

A breakthrough or window 153 on the body 150 allows the view from the machine side, so for example in the position according to Figures 1-3 from above, so from the leadership arrangement 180 ago, through to the top O of the workpiece W, on which the abutment device 100 is placed.

The abutment body 150, together with the two parallel guide rods 182 a T-shaped configuration in itself, wherein the guide rods 182 are not centrally located on the contact body 150, but off-center, so that almost a substantially L-shaped configuration.

A longer support leg 155 is provided, which is arranged directly in the housing longitudinal axis 21 of the housing 16, so that the center of gravity of the configuration consisting of manual machine tool 10 and abutment device 100 is supported substantially above the support leg 155. To the support leg 155 opposite, so on the other side of the two guide rods 182, another, in principle also a support function exhibiting tool leg 156 is provided. The tool leg 156 is shorter than the support leg 155 and is less far from the two guide rods 182 from.

In front of a side surface 157 of the supporting leg 155, there is a supporting edge 158, which has a linear course or has a line-shaped supporting contour. Compared to the relatively large-area side surface 157, the support edge 158 is narrow. On the support edge 158, a tool support surface 160 for supporting the flat side 47 of the tool 40 is provided. Thus, the tool 40 is in the vicinity of its cutting edge, namely in a remote from the tool holder 26 region or the end portion 43 on a support contour or support surface, namely the tool support surface 160. Thus, the tool 40 is optimally guided and supported, so that very precise saw cuts S can be introduced into the workpiece W.

The support edge 158 also forms a marking that can be positioned on a tear line on the workpiece W, for example, such that the tool support surface 160 is aligned with such a tear line. The tool 40 then cuts very precisely at the scribe line.

A preferred embodiment of the invention provides that a magnet 162 acts on the tool 40, which accordingly is ferromagnetic, in the direction of the tool support surface 160 with a force 161. The magnet 162 is embedded, for example, in the material of the contact body 150. For example, located below the pad 154 is a receptacle in which the magnet 162 is inserted. The magnet 162 in the present case is a permanent magnet.

Of course, electromagnetic principles are also possible in the invention to pull a tool in the direction of a tool support surface.

The magnet 162 and the bottom 151 are e.g. fastened with screws 186 on the plant body 150.

Only schematically, it is indicated that the tool 40 can also be acted upon by an additional guide surface 163 of a tool guide 164 in the direction of the tool support surface 160. For example, the tool guide 164 between the contact body 150 and the connection section 110 can be provided with a tool guide 164 and thus guide the tool 40 far above the contact surface 151. This measure has the particular advantage that the side 46 of the tool 40 remains free, so that the operator has a clear view of the Sä-saw cut S has. Thus, apart from the support by the tool support surface 160, the tool 40 is essentially free in the visible region above the workpiece W, so that even the narrow sides 51 are freely visible laterally next to the cutting edge 52 of the tool 40.

The tool guide 164 includes, for example, schematically indicated, in cross-section U-shaped guide receivers 165, in which the blade body 42 is inserted laterally with its respective narrow sides 53 and thus guided.

Of course, a continuous, over the entire transverse width of the blade body 42 extending guide surface 166 could be provided.

A slipping of the tool 40 on the support edge 158 is facilitated by having lateral bevels 159 at their longitudinal end regions.

It is also possible, although not realized in the embodiment that, for example, the support edge 158 opposite a transparent portion is provided, so that the saw blade or tool 40 is also guided on its other flat side, the side 46, in addition. The transparent portion may be integral with the abutment body 150 or may be disposed thereon as an additional element, for example in the manner of a retaining clip or the like.

An immersion depth of the guide rods 182 into the guide sleeves 183 can be limited by means of a clamp 187, which is attached to the workpiece W, for example, on one or both of the guide rods 182 in accordance with an immersion depth or penetration depth of the tool 40. The bracket 187 forms part of a stop device 190 which controls the movement the tool holder 26 or the tool holder 15 is limited in the direction of the contact body 150. Thus, therefore, the abutment device 100 can also fulfill the function of a depth stop.

However, the stop device 190 can also have, for example, a schematically indicated catch or a stop projection 188 which is arranged on one or both guide sleeves 183. The stopper projection 188 can be adjusted between a release position in which it does not protrude into the interior of a respective guide sleeve 183, and a stop position in which the stopper projection 188 projects into the interior of the guide sleeve 183 and thus in the path of movement of a respective guide rod 182 and during Limiting longitudinal movement.

If the stop projection 188, for example, engages in a receptacle 189 on a guide rod 182, when this is retracted into the guide sleeve 183, so that the stopper projection 188 and the receptacle 189 are opposed to each other, the longitudinal position of the contact body 150 with respect to the connecting portion 110 and thus the Tool holder 15 are fixed, so a Längsfixiereinrichtung 191 is formed. The stop projection 188 may be spring-loaded, thus forming a detent. The receptacle 189 may form part of a series of further receptacles (not shown), for example in the manner of a rack into which the stop projection 188 engage, in particular engage, at the respectively desired longitudinal position of the connection section 110 with respect to the contact body 150.

The connection section 110 comprises, for example, a machine slide 111 to which the housing 16 of the hand-held power tool 10 can be fastened. This machine slide 111 can be easily assembled and disassembled, so it's quick to hand when needed and removed when not in use. The tool 40 may remain on the tool holder 15 while the abutment 100 is being assembled or disassembled.

• Der Anschlussabschnitt 110 weist einen Plattenkörper 112 auf, der zwischen den Führungshülsen 183 angeordnet ist. Am Anschlussabschnitt 110 ist ein Aufnahmemaul 113 vorgesehen, das in Eingriff mit der Halteaufnahme 67 durch eine seitliche Bewegung (Figur 4a) gebracht werden kann. Das Aufnahmemaul ist in Richtung der geschlossenen bzw. maschinenseitigen Enden der Führungshülsen 183 hin offen. Die Führungshülsen 183 stehen nach vorn vor das Aufnahmemaul 113 vor, so dass der Anschlussflansch der Hand-Werkzeugmaschine, nämlich die Montagehalterung 60, sozusagen in die Zange genommen werden kann, nämlich zwischen den beiden Führungshülsen 183 entlang in das Aufnahmemaul 113 hinein bewegt werden kann oder bei anderer Sicht die Führungshülsen 183 seitlich an der Montagehalterung bzw. dem Hülsenabschnitt 63 derselben entlang bewegt werden können, bis der Hülsenabschnitt 63 im Aufnahmemaul 113 aufgenommen ist.

The installation of the abutment device 100 on the housing 16 and the hand-held power tool 10 is extremely convenient and simple, which will become apparent below:

• The terminal portion 110 has a plate body 112 disposed between the guide sleeves 183. At the connection portion 110, a receiving jaw 113 is provided, which engages with the holding receptacle 67 by a lateral movement (FIG. FIG. 4a ) can be brought. The receiving mouth is open in the direction of the closed or machine-side ends of the guide sleeves 183. The guide sleeves 183 project forward in front of the receiving jaw 113, so that the connecting flange of the hand-held machine tool, namely the mounting bracket 60, so to speak can be taken in the pliers, namely between the two guide sleeves 183 along in the receiving mouth 113 can be moved or In another view, the guide sleeves 183 can be moved laterally along the mounting bracket or the sleeve section 63 thereof until the sleeve section 63 is received in the receiving jaw 113.

Overall, the receiving mouth 113 together with the two forwardly projecting guide sleeves 183 forms a U-shaped arrangement.

The mounting bracket 60 has on the holding receptacle 67 on a ring receptacle 68 which is suitable together with the receiving mouth 113 to form a pivot bearing 69. Thus, a rotation of the housing 16 and the abutment device 100 is relative possible to each other, which is indicated by an arrow D in FIG. 4b is indicated.

The ring receptacle 68 has a bottom 70 on which a bottom 114 of the receiving mouth 113 rests flat. With respect to the axis of the tool shaft 14, that is, the longitudinal axis direction 18, a support edge 71 and a collar 72 support the receiving jaw 113. The collar 72 projects radially outward from the floor 70. The support edge 71 is also annular and projects slightly in front of the top of the mounting body 61. Thus, therefore, provide the support edge 71 and the collar 72, which is also annular, for a support of the receiving mouth 113 in the direction of the longitudinal axis 18, which also forms a rotation axis R for the abutment device 100 with respect to the housing 16.

The plate body 112 extends with its upper side 115 approximately parallel to the longitudinal axes of the guide sleeves 183 and to the guide axis 181. In front of the upper side 115 projects an annular support projection 116 which is supported on the inner side of the collar 72 facing the bottom 70. Of course, the top 115 could also be supported directly there.

The top 115 is opposed to a bottom 117 (one could refer to the top 115 as a first side and the bottom 117 as a second side). On this underside 117 teeth 118, 119, 120 are provided, between which locking receptacles 121 are formed. The teeth 118, 119, 120 extend around the receiving mouth 113 around. The teeth 118 are, so to speak, the end-side teeth, are located at the open end of the receiving mouth 113, so to speak, while the two teeth 120 are arranged at the bottom or apex of the receiving mouth 113 and two teeth 119 are located between the teeth 120, 118.

The teeth 120 continue to protrude in front of the bottom 117 as the teeth 119, 118. Thus, so the teeth 120 form, so to speak, gate followers or guide teeth. Side surfaces 122 of the teeth 120 are supported on a peripheral wall 73, which extends over a partial circumference of the ring receptacle 68 and the bottom 70 of the ring receptacle 68 opposite. Thus, a radial guidance is given when the two teeth 120 are supported on the peripheral wall 73. The teeth 120 and the peripheral wall 73 form retaining contours, on the basis of which the receiving jaw 113 and the holding receptacle 67 between a release position in which the retaining contours are disengaged and the abutment device 100 is not removable from the holding receptacle 67, and a use position in which the retaining contours engage each other and the abutment device 100 is removable from the holding receptacle 67, are rotatable relative to each other.

An axial guidance in the direction of the longitudinal axis direction 18 could be realized in that the teeth 120 are supported with their free end faces 125 on the support edge 71. In the embodiment, however, the U-shaped profile of the ring receiver 68 provides for axial support and guidance.

The peripheral wall 73 extends around the ring receiver 68 through an angle of about 180 °. In this angular range, therefore, the abutment device 100 can rotate about the mounting bracket 60, for example, the in FIG. 11 take shown angular position. However, the rotational movement also serves to fasten the abutment device 100 comfortably on the hand-held machine tool 10.

Starting from the angular position according to FIG. 4a Namely, the abutment device 100 is attached so to speak in the direction of the mounting bracket 60, wherein a mark 74 on the mounting bracket 60, namely, for example, on the end face 65, and a mark 123 on the terminal portion 110 indicate the correct rotational position. For example, the markings 74, 123 are designed as arrows. Also in a rotational position from the other side of the housing 16, the attachment of the abutment device 100 to the hand-held machine tool 10 works. For this purpose, a further marking 74 is provided on the collar 72.

The corresponding FIG. 4b infected attachment device 100 is then rotated according to the arrow D. An inclined surface 124 on a respective outer tooth 118 allows resilient latching projection 81 of a latching device 80 is deflected past the respective outer tooth 118 and then into the next, adjacent to the tooth 118 latching receptacle 121 engages. Then, in any case, the abutment device 100 of the hand-held machine tool 10 is locked and locked.

Upon release of the latch, the abutment 100 may be rotated on the mounting bracket 60, e.g. to take an angular position to the housing 16 or for disassembly.

The detent recesses 121 are associated with further markings 75, which are also arranged on the end face 65 of the mounting bracket 60, so are well visible. An angular distance between the detent recesses 121 and thus also the markings 75 corresponds to an angular distance of recesses between the teeth 29 on the tool holder 26 and the teeth 49 of the tool 40. Based on the locking device 80, the abutment device 100 in the same angular positions with the mounting bracket 60 and Thus, the housing longitudinal axis 21 of the housing 16 of the hand-held machine tool 10 are latched, in which the tool 40 is mounted relative to the housing longitudinal axis 21. Is in FIG. 11 represented, exemplary for an angular position. The tool longitudinal axis 54 of the tool 40 Then, for example, it aligns with a guide axis 181 of the abutment device 100.

It can be seen that the assembly and also the adjustment of an angular position of the abutment device 100 relative to the housing 16 is simple. The operation of the locking projection 81 is very easy. The latching projection 81 is provided on a latching pawl 82 pivotally connected by means of a pivot bearing 83 between an engagement position in which the latching projection 81 has entered one of the latching receptacles 121, and a disengaged position in which the abutment device 100 based on the pivot bearing 69 relative to the mounting bracket 60 can turn. The pivot bearing 83 comprises, for example, a pin 84 which penetrates a corresponding bearing block on the fastening body 61 or the sleeve portion 63. A handle 85, for example, with a corrugation, facilitates the operation of the latch 82. The latch 82 is spring-loaded in the engaged position, for example by a non-visible spring arrangement. The spring arrangement may comprise, for example, a leg spring, through which the pin 84 is inserted.

The latching projection 81 has lateral oblique surfaces 86, which are assigned inter alia to the inner flanks of the latching receptacles 121. The inclined surfaces 86 facilitate, for example, the engagement of the latching projection 81 in the latching receptacles 121. Appropriately, an inclination of the inclined surfaces 86 is such that at an abrupt impact load, for example, when the combination of hand-held machine tool 10 and abutment device 100 falls to the ground, the latch 82 out of engagement with the latch receptacles 121, so that the abutment device 100 is rotatable relative to the housing 16 and thereby reduces shock loading. But the inclined surfaces 86 also facilitate that the locking projection 81 to the in principle Sliding surfaces representing 124 easier to slide along.

The mounting bracket 60 forms a header adapter 76 that allows the abutment device 100 to be adapted to the handheld machine tool 10.

Claims (15)

1. Hand-operated power tool (10), in particular oscillating hand-operated power tool, with a housing (16), and a drive (11) mounted in the housing (16) and provided for driving a tool mount (15) which is fitted to a tool shaft (14) and on which a tool (40), in particular in the form of a cutting tool or a drilling tool, may be releasably mounted, wherein the hand-operated power tool (10) has a lay-on device (100), wherein a tool holder (26) of the tool mount (15) and a lay-on body (150) of the lay-on device (100) are adjustable relative to one another with the aid of a guide assembly (180), wherein the lay-on body (150) has a lay-on surface (151) for laying on a workpiece (W) to be machined by the hand-operated power tool (10), characterised in that alongside the lay-on surface (151) there extends a tool support face (160) for supporting a flat side (47) of the tool (40).
2. Hand-operated power tool according to claim 1, characterised in that the tool (40) is at least partly or wholly free opposite the tool support face (160), so that a side (46) of the tool (40) opposite the flat side (47) which is supported on the tool support face (160) is visible above the workpiece (W).
3. Hand-operated power tool according to claim 1 or 2, characterised in that the tool support face (160) lies opposite a transparent section of the lay-on body (150), so that a side (46) of the tool (40) opposite the flat side (47) which is supported on the tool support face (160) is visible above the workpiece (W).
4. Hand-operated power tool according to any of the preceding claims, characterised in that it has a tool guide (164) with at least one guide surface (166) to one side of the tool support face (160).
5. Hand-operated power tool according to claim 4, characterised in that the tool guide (164) has at least one U-shaped guide seating (165), into which the tool (40) dips with a narrow side.
6. Hand-operated power tool according to claim 4 or 5, characterised in that the guide surface or surfaces (166) include a guide surface (166) opposite the tool support face (160), so that the tool (40) is guided between the tool support face (160) and the guide surface (166) lying opposite.
7. Hand-operated power tool according to any of claims 4 to 7, characterised in that the tool guide (164) is located wholly or partly between the tool support face (160) and the tool holder (26).
8. Hand-operated power tool according to any of the preceding claims, characterised in that there is provided in the area of the tool support face (160) at least one magnet (162), in particular a permanent magnet, which generates a magnetic field attracting the tool (40) in the direction of the tool support face (160).
9. Hand-operated power tool according to any of the preceding claims, characterised in that the tool support face (160) includes or is formed by a narrow support edge and/or linear support contour protruding from a side face (157) of the lay-on body (150).
10. Hand-operated power tool according to any of the preceding claims, characterised in that the lay-on body (150) is spring-loaded by a spring assembly (184) in a direction away from the tool holder (26).
11. Hand-operated power tool according to any of the preceding claims, characterised in that it has at least one longitudinal fixing device (191) for fixing the lay-on body (150) in at least one longitudinal position relative to the tool holder (26), in particular in a longitudinal position farthest away from the tool holder (26) or a longitudinal position closest to the tool holder (26), and/or at least one stop device (190) for limiting a movement of the tool holder (26) in at least one longitudinal position relative to the lay-on body (150).
12. Hand-operated power tool according to claim 11, characterised in that the longitudinal fixing device (191) or the stop device (190) has a clamp, in particular attachable to a guide rod (182) of the guide assembly (180), or a stop projection (188) which may be moved into a movement path of a guide rod (182) of the guide assembly (180), in particular a latching projection.
13. Hand-operated power tool according to any of the preceding claims, characterised in that the lay-on device (100) has or forms a depth-control stop, by which a depth of penetration of the tool (40) into the workpiece (W) may be limited, and/or the lay-on device (100) has a machine slide (111) for holding the housing (16) of the hand-operated power tool (10) and which is movable with the aid of the guide assembly (180) relative to the lay-on body (150), in particular in the form of a table, so that the machine slide (111) with the housing (16) of the hand-operated power tool (10), guided by the guide assembly (180), may be moved relative to the lay-on body (150) abutting the workpiece (W) in use.
14. Hand-operated power tool according to any of the preceding claims, characterised in that it forms part of a system which has an assembly mounting (60) for releasable mounting of the lay-on device (100), wherein the assembly mounting (60) has a holding location (67) through which the tool shaft (14) passes and the lay-on device (100) has on one connecting section (110) a holding jaw (113) open at the side, which may be brought into engagement with the holding location (67) transversely to a longitudinal axis direction (18) of the tool shaft (14) when the tool (40) is mounted on the tool holder (26), so that the lay-on device (100) with the mounted tool (40) may be mounted on or removed from the hand-operated power tool (10).
15. Lay-on device (100) for a hand-operated power tool (10), in particular oscillating hand-operated power tool, with a housing (16), and a drive (11) mounted in the housing (16) and provided for driving a tool mount (15) which is fitted to a tool shaft (14) and on which a tool, in particular in the form of a cutting tool or a drilling tool, may be releasably mounted, wherein the hand-operated power tool (10) has a lay-on device (100), wherein a tool holder (26) of the tool mount (15) and a lay-on body (150) of the lay-on device (100) are adjustable relative to one another with the aid of a guide assembly (180), wherein the lay-on body (150) has a lay-on surface (151) for laying on a workpiece (W) to be machined by the hand-operated power tool (10), wherein the lay-on device (100) forms a system component of a system which includes an assembly mounting (60) for releasable mounting of the lay-on device (100), wherein the assembly mounting (60) may be releasably attached to the hand-operated power tool (10) or forms a part of the hand-operated power tool (10), characterised in that a tool support face (160) to support a flat side (47) of the tool (40) extends alongside the lay-on surface (151).

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