EP2881228B1 - Portable tool with a mounting tool - Google Patents

Description

The invention relates to a hand-held machine tool with a tool holder for holding a working tool, in particular a saw blade, according to the preamble of claim 1.

Such a hand machine tool is in DE 101 59 050 A1 described.

An actuation mimic of a hand-held machine tool DE 100 48 675 A1 provides in this case that the holding device, the machine part with the tool holder, where the drive motor is arranged, locked in an upper depth position with respect to the guide body. Then the working tool is completely or at least substantially hidden in a cover designed as a cover, so that the risk of injury does not exist. For a change of the working tool, the working tool emerges from the cover, whereby previously the machine is secured against unintentional switching on the basis of the securing device. The securing device blocks an actuation of a drive switch, with which the drive motor can be switched on, and at the same time activates a blocking device, for example a so-called spindle stop, so that the tool holder can no longer rotate. The assembly tool, such as an Allen key, can then be attached to the tool holder. When not in use, the assembly tool is in good hands in the storage compartment and is available Need, namely for the change of the working tool, easily accessible available.

However, there is also the danger that the assembly tool is lost.

It is therefore the object of the present invention to improve the operability of a hand-held machine tool of the type mentioned.

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

It is a basic idea of the present invention that the actuating element of the securing device at the same time constitutes a cover for the assembly tool. The assembly tool is thus much better secured against loss.

The securing device expediently comprises a blocking device for blocking the movement of the tool holder for a tool change of the working tool. This is a security measure, i. the operator has a much lower risk of injury, but also facilitates the operation or operation, because, for example, a torque can be exerted on the tool holder to change the tool. For example, you can solve a fastening screw, with which the working tool is held on the tool holder easier.

In the securing position, the tool holder is thus advantageously fixed to an operation on the basis of the mounting tool, for example, rotationally fixed blocked. The determination may, but need not be, free of play, i. It is possible that the tool holder can move by a certain amount of movement, for example, can rotate.

It may be provided as an advantageous measure that the hand-held machine tool has a spring arrangement arranged on the accumulation receiver, for example an ejection spring, for loading the assembly tool in the sense of ejection from the stowage receptacle. Thus, for example, after the adjustment of the actuating device in the release position, the assembly tool is moved by the spring arrangement completely or partially out of the accumulation receptacle.

But on the actuating element can also be a driver for taking the assembly tool into the accumulation receptacle or be arranged out of congestion recording out. For example, located on the actuating element, a clamping receptacle for the assembly tool. However, it can also be provided an actuating projection which pry the assembly tool, for example, out of the accumulation receptacle or pushes out in another way. Thus, under the driver is to be understood to train on and / or acting on the mounting tool pressure member organ.

It is advantageously provided that the accumulation receptacle is located on the housing receiving the drive motor. The congestion receiver is expediently configured as a recess of the housing extending inwardly from an outer wall of the housing or has such a depression. The recess is preferably designed so that it can accommodate the assembly tool in whole or in part. The assembly tool is not or only partially before the recess when it is received therein. The congestion recording is expediently designed as a plug-in receptacle into which the assembly tool can be inserted. Preferably, the plug-in receptacle is designed to hold the assembly tool in a clamping seat.

A further embodiment of the invention provides that the accumulation receptacle comprises a gap between the actuating element and an outer wall of the housing of the hand-held power tool or is designed as such a gap. Thus, therefore, the congestion recording can be provided so to speak directly on the actuator. But it is also a combination possible, ie that represent both the actuating element and the housing which receives the drive motor, a part of the congestion recording. Thus, one can imagine that, so to speak, a housing shell in the form of the actuating element of the covering position in the release position is operated so that the mounting tool is accessible or free and can then be taken.

The actuating element may expediently have a holder for holding the assembly tool, wherein the assembly tool can be removed from the holder in the release position and can not be removed from the holder in the covering position. The holder comprises, for example, a clamp receptacle, a latch receptacle or the like.

Preferably locking means are provided for locking the mounting tool in the accumulation receptacle. Also useful are locking means for locking the actuating element in the covering position. Consequently, the latching means of the actuating element can simultaneously also form latching means for the mounting tool, that is to say the mounting tool is secured by the actuating element pre-latched in the covering position.

The securing device preferably has a push-button switch or another sensor for detecting the presence of the assembly tool in the accumulation receptacle. For example, can be determined by an inductive or capacitive sensor, whether a magnetic or an electrical capacitance influencing mounting tool in the congestion recording. A safety measure advantageously provides that the safety device for switching off the drive motor or for securing the drive motor is configured against starting when the sensor determines that the mounting tool is not in the accumulation receptacle. Thus, an additional security is created. However, it is also conceivable that the securing device in combination with the previous measures or also separately indicates only whether the assembly tool is located in the congestion receptacle, for example visually and / or acoustically. These are, for example, optical output means, for Example light source, a display or the like and / or acoustic output means, for example a speaker provided.

An advantageous embodiment of the invention provides that a locking device is adjusted by the located in the accumulation receiving assembly tool a blocking device in a release position in which a drive switch for switching on and off the drive motor is released. If the assembly tool is not in the congestion recording, the blocking device expediently automatically, for example, by means of a spring load or a driving through another element, for example an actuating element of the securing device, a blocking position in which the drive switch is not actuated or blocked. For example, by the assembly tool, a bolt or a particular spring-loaded detent in the release position adjustable or is adjusted in this release position when using the assembly tool in the congestion recording, wherein in the release position of the drive switch, for example, is freely movable. For example, if the assembly tool is removed from the accumulation seat, the catch or the rule will come free and into engagement with the drive switch or a drive switch element, for example a button for the drive switch.

According to the invention blocking means are provided for blocking the actuating element during operation of the hand-held machine tool, so that for example when the drive motor or rotating tool holder blocking takes place, so that the actuating element is not adjustable from the covering position in the release position. This also makes a significant contribution that the assembly tool is housed secured in the storage jam.

The actuator can, as explained, completely obscure the stowage receptacle in the covering position. A preferred measure provides that the actuating element in the covering position conceals a first portion of the congestion receptacle and a second portion of the congestion receptacle adjacent to the actuating element located in the covering position is open to the environment or visible through a transparent cover. The second portion may also be only partially covered by the transparent cover. In any case, it is possible for the operator to see directly whether the assembly tool is aboard the hand-held machine tool.

The assembly tool located in the accumulation receptacle can be grasped by an operator and serve as an actuation handle for the actuation element, so that the actuation element can be actuated from the occlusion position into the release position and thus the securement device can be actuated into the securing position on the basis of the assembly tool. In this way, as it were, the assembly tool actively contributes to the operation of the safety device for the tool change. For example, the assembly tool can serve as an operating element with which the actuating handle can be actuated from the covering position into the release position. The operator therefore only needs to grasp the assembly tool, for example, and can simultaneously actuate the actuating element in this way.

Preferably located next to the accumulation receiving a gripping the mounting tool facilitating recessed grip. This recessed grip can be helpful, for example, in the aforementioned measure to take the assembly tool and at the same time to adjust the securing device in the securing position. It is preferred that the recessed grip is at least partially hidden by the actuating element in the covering position.

The assembly tool expediently comprises a mounting key, in particular an Allen key. Preferably, the working tool by means of a screw, for example a bolt or a screw nut, fastened to the tool holder. The assembly tool expediently has a form-fitting contour for positive engagement in the screw element. But the assembly tool can also be a special tool, such as a wrench, a two-armed key or the like. On the mounting tool, a mechanical coding can be provided, which only fits to the coded tool holder.

The assembly tool expediently has an actuating arm with a form-fitting contour for actuating the tool holder and an actuating arm angled to the operating arm for gripping by an operator. One of the arms is expediently covered by the actuating element in the covering position, while the other arm is accessible from an outer side of the housing.

It is preferably provided that the actuating element at the same time adjusts a holding device in the release position when adjusting in the release position, so that a tool holder comprehensive and on a guide body, such as tool table or machine table, the hand-tool machine based on a Tiefeneinstelllagers movably mounted machine part of the hand-held machine tool with respect to the guide body from a first, for example, upper, depth position is adjustable to a second depth position, wherein the tool holder is accessible to a change of the working tool.

The holding device may be or include, for example, a clamping device or a latching device. The stop in the first depth position is thus for example a press fit or a catch. Consequently, the respective holding elements are then, for example, clamping elements or latching elements.

It is a basic idea that the actuator, which is gripped by the operator and is moved to the securing position, at the same time the hold, such as a clamping fit or a latch, the hand-held machine tool in the first depth position dissolves. In the first depth position assembly of the working tool, for example, not possible or only under unfavorable circumstances. In the first depth position, for example, the tool holder is hidden under the cover mentioned, so it can not be operated using an assembly tool, for example, so that the working tool can not be replaced. It is also possible that the working tool is in the first depth position still within the cover or below, for example, a cover, that even if the tool holder would be opened, it can not be grasped. Here, the invention provides a favorable remedy, i. that the stop, so for example, the clamping seat or the latch, the tool holder or the tool holder having machine part is automatically actuated when adjusting the actuator in the backup position, so that the operator, for example, by an additional operator action the machine part and thus the tool holder in the second depth position can adjust, where the tool change the working tool much easier succeed, at least the tool holder is accessible to a change of the working tool. For example, the working tool can be solved by means of the already mentioned assembly tool.

The holding device allows a stop, so for example a clamping seat or a catch, the machine part or the Tool holder preferably in the second depth position. For this, the said first holding element or locking element may be responsible. But it is also possible that a separate, second retaining element or locking element is provided for this purpose. In any case, it is advantageous that the respective holding element (the first or second holding element or locking element) is biased by the actuating element when adjusting in the securing position in a holding position for holding, so for example for clamping or locking of the machine tool having the tool part in the second depth position , When the machine part is moved with the tool holder in the second depth position, the respective holding element comes, for example, into engagement with a holding receptacle or locking receptacle on the guide body or a component connected thereto or jammed, so that the tool change in the thus fixed fixed tool holder much easier ,

But it is also possible that the machine part with the tool holder in the second depth position is not fixed in place fixed, so it remains movable with respect to the guide body. This can facilitate handling during tool change, for example, for a fine positioning of the tool holder.

As mentioned, the tool holder in the first depth position is preferably concealed by a cover, for example a cover, of the hand-held machine tools.

In the second depth position, which is suitable for the tool change of the working tool, the tool holder is, for example, above or below the guide body. For example, the tool holder is in the second depth position in the area of a window or another recess of the aforementioned cover for the working tool.

The machine part with the tool holder is expediently adjustable in at least a third, or in further, for example, fourth, fifth and other depth position based on the Tiefeneinstelllager. Conveniently, the machine part with the tool holder in addition to the second depth position also preferably infinitely adjustable. The further depth positions serve e.g. a working operation, that is, for example, that a sawing operation is possible.

The Tiefeneinstelllager may include, for example, a sliding bearing. But it is also possible that it is designed as a pivot bearing or includes such, for example as shown in the drawing. Of course, a combined swing sliding bearing would be readily conceivable.

Preferably, the hand-held machine tool for the tool holder comprising the machine part has a arranged on the guide body Tiefeneinstelllager. The Tiefeneinstellhandhabe is preferably fixed in at least two relative positions with respect to the guide body, for example, clamped, latched or both. The machine part having the tool holder abuts in a respective depth position determined by the depth setting stop. For example, a corresponding stop projection is provided on this machine part with the tool holder.

The actuating element can, for example, act directly on the first holding element when adjusting in the securing position and adjust this in the release position.

However, preferred is an indirect actuation, as in the embodiment. For example, a Tiefeneinstellhandhabe is provided with the first holding element is adjustable in the release position to adjust the tool holder having the machine part from the first depth position for adjustment in at least one other different, for example, the second, depth position. The further depth position is used for a working operation in which, for example, a saw blade projects downwards in front of the guide body. The actuating element acts, for example, for adjusting the first holding element to the Tiefeneinstellhandhabe.

However, it is also possible a configuration in which in the presence of Tiefeneinstellhandhabe the first holding element is individually actuated by the Tiefeneinstellhandhabe or the actuating element of the securing device. Thus, therefore, the first holding element can be selectively actuated by the Tiefeneinstellhandhabe or the actuating element of the securing device.

The actuator acts, for example via a toothed gear, cable transmission or the like on the Tiefeneinstellhandhabe or the first holding element. But it is also a cam mechanism or the like possible. It is obvious that also combinations of such transmissions are possible, i. For example, a cable transmission in combination with a toothed gear and a cam gear.

The actuating element has, for example, an actuating projection, which when adjusting in the securing position on a mating contour, for example, a curved surface, the Tiefeneinstellhandhabe or the first holding element slides or rolls along. For example, an actuating roller is provided on said actuating projection.

The hand-held machine tool according to the invention is preferably a sawing machine, in particular a submerged saw. The application, for example, in wall slot cutters, routers or the like, is of course readily possible. The hand machine tool may be an electrically powered, i. the drive motor is an electric motor or includes such. The hand-held power tool may have a connection cable for a mains operation or have a battery on board.

However, the concept according to the invention can also be readily implemented in the case of pneumatic drives.

The working tool is preferably a cutting or sawing tool.

Figur 1

eine perspektivische Schrägansicht einer erfindungsgemäßen Hand-Werkzeugmaschine, von der in

Figur 2

ein Detail A vergrößert dargestellt ist, bei dem eine Betätigungshandhabe in eine Freigabestellung verstellt ist,

Figur 3

die Anordnung gemäß Figur 2 schräg von vorn, jedoch bei in eine Abdeckstellung verstellter Betätigungshandhabe,

Figur 4

die Anordnung gemäß Figur 3, jedoch in der Stellung gemäß Figur 2,

Figur 5

eine perspektivische Schrägansicht einer Sicherungseinrichtung mit der erläuterten Betätigungshandhabe in Schrägansicht etwa entsprechend Figur 4,

Figur 6

die Anordnung gemäß Figur 5, jedoch von der entgegengesetzten Seite,

Figur 7

eine Seitenansicht der Anordnung gemäß Figur fünf, jedoch bei ihnen Abdeckstellung befindlichem Betätigungselement,

Figur 8

die Darstellung gemäß Figur 7, jedoch mit in Freigabestellung verstelltem Betätigungselement,

Figur 9

eine Seitenansicht der Anordnung gemäß Figur 7 im in das Maschinengehäuse der Hand-Werkzeugmaschine eingebauten Zustand,

Figur 10

die Anordnung gemäß Figur 9, jedoch mit in die Freigabestellung verstelltem Betätigungselement, und

Figur 11

eine Tiefeneinstelleinrichtung mit einer Halteeinrichtung der Hand-Werkzeugmaschine gemäß der vorstehenden Figuren.

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

FIG. 1

a perspective oblique view of a hand-held machine tool according to the invention, of the in

FIG. 2

a detail A is shown enlarged, in which an actuating handle is adjusted in a release position,

FIG. 3

the arrangement according to FIG. 2 obliquely from the front, but with an actuating handle adjusted in a covering position,

FIG. 4

the arrangement according to FIG. 3 , but in the position according to FIG. 2 .

FIG. 5

an oblique perspective view of a safety device with the explained actuating handle in an oblique view approximately corresponding FIG. 4 .

FIG. 6

the arrangement according to FIG. 5 but from the opposite side,

FIG. 7

a side view of the arrangement according to FIG five, but located in their covering position actuator,

FIG. 8

the representation according to FIG. 7 , but with actuated element displaced in the released position,

FIG. 9

a side view of the arrangement according to FIG. 7 in the state installed in the machine housing of the hand machine tool,

FIG. 10

the arrangement according to FIG. 9 , but with adjusted in the release position actuator, and

FIG. 11

a Tiefeneinstelleinrichtung with a holding device of the hand-held machine tool according to the preceding figures.

A hand-held machine tool 10 according to the drawing is for example a saw, in particular a circular saw, whose working tool 15 is formed by a saw blade. In the present case, the hand-held power tool 10 is a submersible saw. The hand-held power tool 10 has a machine housing 12, in which a drive motor 13, For example, an electric motor is recorded. The drive motor 13 drives via a gear or directly to a tool holder 14 to which the working tool 15 is releasably fastened. The tool holder 14 comprises, for example, a screw receptacle into which a tool holding element 16, for example a screw element, can be screwed, wherein the working tool 15 is then held between the tool holder element 16 and the tool holder 14.

The working tool 15 is in an upper and indicated by a dashed line depth position, which represents a first depth position T1, preferably completely above a guide body 11 of the hand-held machine tool, such as a saw table, and located in the interior of a cover 17, for example, a cover , Dust can be sucked out of the cover 17 via a suction connection 18, to which a suction hose can be connected.

The handheld power tool 10 may be gripped by a user on a handle 19 and another handle 20 and guided along a workpiece or guide rail. In the region of the handle 19 there is a switch element 21 for a drive switch 23, with which the drive motor 13 can be switched on or off or in a further variant can also be adjusted in relation to its speed, which is not concrete in the manual power tool 10 so realized.

The cover 17 is fixedly connected to the guide body 11. Opposite these two components, the machine housing 12 can be pivoted about a pivot axis 24 by means of a Tiefeneinstelllagers 25 after actuation of a release button 22, in which case the working tool 15 from the cover 17 downwards in front of the guide body 11 emerges, as in figure 1 represented and indicated by an arrow T, for example, to perform a saw cut into a workpiece into it. In the FIG. 1 shown lower depth adjustment position is a second Tiefeneinstellposition T2.

At a on the cover 17 and thus ultimately on the guide body 11 with respect to a depth position fixed guide 26 is a Tiefeneinstellanschlag 27 slidably mounted and fixed respectively to the guide 26, for example, latched, wherein in FIG. 11 by way of example, a lower position in dashed lines and a position of the depth adjustment stop 27 arranged further up in dashed lines are shown. The housing 12, which constitutes a machine part 28 movably mounted with reference to the depth adjustment bearing 25 with respect to the guide body 11, abuts with a stop projection 29 in the respective depth position preselected by the depth adjustment stop 27. For example, a further, lying below the depth position T2 depth position T3 is located. With the Tiefeneinstellanschlag 27 so the respective penetration depth of the working tool 15 can be adjusted in the workpiece continuously or in stages.

Furthermore, a miter angle is still adjustable by means of a miter bearing 30, with which the entire unit consisting of cover 17 and machine part 28 and thus of the working tool 15 with respect to the guide body 11 is mounted obliquely pivotable about a miter pivot axis 31.

When the machine part 28 is in the depth position T2, the tool holder 14 is arranged in the region of a recess, for example a window 32, of the cover 17, through which the tool holder 14 can be operated, that is to say, for example, the tool holder element 16 can be screwed off or screwed on, to replace the working tool 15. The Depth position T2 can also serve to perform a saw cut.

In order for the tool change of the working tool 15 to be carried out safely for the operator, a securing device 40 is provided. The securing device 40 comprises an actuating element 41, which is arranged between an example in FIGS. 1 and 2 shown release position F and a cover A according to, for example FIG. 3 or 9 , is adjustable.

In the release position F, the securing device 40 is in a securing position S, in which the switch element 21 and thus the drive switch 23 is blocked, so that the drive motor 13 remains de-energized and can not start in any case, and also a mechanical blockage is given by namely a drive element 33 is blocked on the drive train of the drive motor 13. For example, a with the tool holder 14 and the drive motor 13 with respect to its axis of rotation 34 rotatably connected fan wheel, which forms, for example, the drive element, no longer rotate.

When the operating member 41 occupies the covering position A, the hand-held power tool 10 can be operated, i. the drive motor 13. Drive the tool holder 14. The drive switch 23 is released, as well as the drive element 33, so e.g. the fan wheel. The securing device 40 then has an operating position B.

The actuating element 41 is mounted pivotably about a pivot axis 42 with respect to the housing 12. It has a swivel arm 43 and a handle section 44 arranged at the free end of the swivel arm 43. The grip portion 44 includes a plate-like cover portion 45, projecting from the side legs 46.

On an arm 35, with which the handle 19 is supported on the main body of the housing 12, a receptacle 36 for the actuating element 41 is provided. The receptacle 36 comprises, on the one hand, a longitudinal slot 37, which has the pivoting arm 43, and, for another, a receiving area 38 into which the grip portion 44 can pivot. An inner contour of the receiving area 38 or of the longitudinal slot 37 is designed such that the actuating element 41 in the covering position A is at least almost in alignment with the outer contour of the arm 35.

On the receiving area 38 latching contours 39 are provided which serve for latching with latching projections 47 on the legs 46 of the actuating element 41. The latching contours 39 and the latching projections 47, which are resilient, form components of latching means 48 for latching the actuating element 41 in the covering position A.

Thus, when the actuating element 41 is swung out of the receptacle 36, as in FIG. 1 is clearly visible to the operator, the securing device 40 in the securing position S.

In addition, the actuating element 41 in the release position F releases a congestion receptacle 50 for an assembly tool 100. The congestion receiver 50 is located on the arm 35.

The congestion receptacle 50 comprises a first section 51 extending next to the longitudinal slot 37 and a second section 52 located on the receiving section 38. The section 52 is concealed by the handle section 44 when the actuating element 41 is in the covering position A. The first Section 51, however, always remains free or without cover by the actuator 41, so that the assembly tool 100 always remains visible. The operator thus sees whether the assembly tool 100 is aboard the hand-held power tool 10.

The section 51 could also be at least partially provided with a transparent cover, at least insofar as the assembly tool 100 can be arranged in the accumulation receptacle 50 by an operator and again removed from the stowage receptacle 50.

For example, the accumulation receptacle 50 is at least partially in the region of the receptacle 36 for the actuating element 41. An alternative form of the stowage receptacle 50 could also be located directly in the interior of the receptacle 36, for example, such that the assembly tool 100 engages in the longitudinal slot 37 and from Swivel arm 43 is covered in the covering position A.

The assembly tool 100 is designed, for example, as an Allen key. An actuating arm 101 is designed at its free end with a positive locking contour 102 in a conventional manner, so that it can engage in a form-fitting manner in a corresponding form-fitting contour on the tool holding member 16, which is a screw. With the assembly tool 100, therefore, the tool holding element 16 can be screwed into the tool holder or a screw contour arranged thereon or unscrewed therefrom in order to change the working tool 15. From the operating arm 101 is angularly a handle arm 103 from which serves to grasp by an operator.

The actuating arm 101 dips into the section 51 of the accumulation receiver 50. The handle arm 103 is in the section 52 added. The sections 51 and 52 are preferably designed as plug-in sections or plug-in receptacles into which the assembly tool 100 can be inserted, so to speak. In addition, it is advantageous if a certain jamming takes place, that is, that the assembly tool 100 is clamped in the accumulation receptacle 50 with at least low force or holds in a clamping fit. This counteracts, for example, a vibration of the assembly tool 100 in the accumulation receptacle 50 during operation of the hand-held power tool 10.

The at the side legs 46 of the actuating element 41 dive into lateral portions 53 of the receiving portion 38 of the receptacle 36 for the actuating element 41, which is provided on the arm 35, a. There they are substantially contoured with the adjacent wall of the arm 35. On the outer sides of the two legs 46 recessed grips are preferably provided, so that the actuating element 41 can be taken for example with thumb and forefinger comfortably. The side portions 53 are also designed as depressions relative to said wall of the arm 35.

One of these depressions or a section 53 furthermore comprises the section 51 of the accumulation receptacle 50, but is wider than the accumulation receiving section 51. In this way, when the actuation element 41 is in the release position F, a recessed grip 54 is created, into which the operator grips the assembly tool 100 can intervene. For example, the operator may take a bend portion 104 between the actuator arm 101 and the handle arm 103. The recessed grip 54 is concealed by the actuating element 41 when it occupies the covering position A. As a result, grasping the assembly tool 100 is no longer possible there.

Incidentally, the mounting tool 100 with a free end portion 105 of the handle arm 103 dips into a plug-in receptacle 55 at the farthest end portion of the baffle receiving portion 51 from the portion 52, so that the mounting tool 100 while in the so-speak a longitudinal slot performing congestion-receiving portion 51 despite of the located in the covering position A actuator 41 remains visible, but can not be removed from it.

The end region 106 of the actuating arm 101 having the form-fitting contour 102 is also preferably accommodated in a plug-in receptacle 56 when the assembly tool 100 is stowed in the stowage receptacle 50. This measure contributes to a firm hold of the assembly tool 100 in the accumulation receiver 50, even if the actuation element 41 is opened, so to speak, namely the release position F occupies.

The mounting tool 100 is in the present case an Allen wrench 107. Of course, a jam receiver according to the invention is also suitable for receiving other assembly tools, for example special wrenches whose actuating contours or form-fitting contours fit to a respective tool holding element comparable to the tool holding element 16. It is preferred if the congestion receiver is then at least partially formed to a positive fit of the respective special key or assembly tool.

A removal of the assembly tool 100 from the accumulation receptacle 50 can be facilitated by a spring arrangement 57, for example an ejection spring 58, which loads the assembly tool 100 out of the stowage receptacle 50. When inserting or inserting the assembly tool 100 in the accumulation receptacle 50, the spring assembly 57 is tensioned.

It can be advantageously provided that the hand-held machine tools 10 sensory, namely, for example, with a sensor 59, detects whether the assembly tool 100 is located in the accumulation receptacle 50. By way of example, the sensor 59 is a push-button switch, an inductive sensor, a capacitive sensor or the like, which is actuated, for example, when mounting the assembly tool 100 in the congestion receiver 50 in the sense of a pressure switch or pushbutton or detects the altered capacitive or inductive conditions.

It is also possible that the mounting tool 100, when it is received in the storage container 50, for example, the drive switch 23 of the hand-held machine tool 10 releases. For example, it is possible for the assembly tool 100 to actuate a locking device for the switch element 21, for example to disengage a latch 108 from the switch element 21, so that the switch element 21 can be actuated to switch on the drive motor 13. In FIG. 4 the bolt 108 is indicated schematically and an arrow which signals the unlocking. The latch 108 is, for example, in its locking position, that is, spring-loaded in engagement with the switch element 21 and is actuated by the end portion 106 of the mounting tool 100 in the direction of the unlocked position (arrow direction).

On the basis of output means 60, for example acoustic or optical output means, for example a display or the like, the hand-held machine tool 10 can signal that the assembly tool 100 is in the safe position. For example, a green indicator near the handle 20 may signal that the hand machine tool is ready, that the assembly tool 100 is not in any way in engagement with the tool holder 16 of the tool holder 14, but where it belongs in the working operation, namely in the congestion recording 50th

A safety circuit 61 can also provide that, for example, the drive motor 13 does not start, that is, for example, the drive circuit is interrupted or an electronic control (not shown) prevents the start of the drive motor 13 when the sensor 59 determines that the mounting tool 100 is not working properly is housed in the congestion receptacle 50.

If, for example, next to the section 50 of the congestion receiver 50 was a recessed grip, one could also grasp the handle arm 103 and thus, so to speak, move the actuating element 41 out of the covering position A into the release position F, for example pry it open, as it were.

It would also be conceivable to accommodate the assembly tool 100 or another assembly tool of a hand-held power tool according to the invention under a slide or the like, the slide serving, for example, to block an electric drive switch (corresponding to the drive switch 23) for a tool change of the working tool 15 and / or to activate a so-called spindle stop or the like other mechanically mechanically locking the drive train of the hand machine tool locking mechanisms. At least partially, then the congestion recording is below a range of movement of this slider.

It is also possible that, for example, on the actuating element 41, a driver 62 is provided, from which the mounting tool 100 is taken during opening or adjustment of the covering position A in the release position F, so that, for example, the disengaged position according to FIG. 2 occupies. In FIG. 5 is shown schematically on the leg 46 of the actuating element 41, a driver 62, which in itself must be present on the opposite leg 46, which is located directly next to the accumulation receiver 50. The driver 62 includes, for example, a fixed or preferably resilient projection, which engages under the mounting tool 100, for example in the region of the curved portion 104.

The machine part 28 is pivotable about the pivot axis 24 relative to the guide body 11 on the basis of the depth adjustment bearing 25, that is to say a depth adjustability is provided. In the upper depth position T1 of the machine part 28 is locked by a holding device 65. Based on a at its free end the unlocking button 22 having Tiefeneinstellhandhabe 66, the holding device 65 is detachable, so that the machine part 28 from the depth position T1 in further, for example, the depth positions T2 and T3, depth positions is movable.

The Tiefeneinstellhandhabe 66 is pivotable about pivot axis 67. For example, it is loaded by a spring 68 in the direction of a holding position H of the holding device 65, so that an operator by pressing the unlocking button 22 against the force of the spring 68, the holding device 65 is unlocked or "unlocked" as it were. The spring 68 acts, for example, on an arm 69 projecting on the one hand from the pivot axis 67, at the free end of which the unlocking 22 is located.

Another arm 70 of Tiefeneinstellhandhabe 66 stands to the other side from the pivot axis and is actuated by the actuating element 41. For example, located on the arm 70, a mating contour 71 on which an actuating contour 72 of the actuating element 41 during adjustment of the covering position A in the release position F, ie in the direction of securing position S slides along, while doing the same Tiefeneinstellhandhabe 66 is adjusted in the direction of a release position L.

In the release position L of the machine part 28 is released, so it can be adjusted from the depth position T1 in the depth position T2. Thus, the depth adjustment is automatically released when adjusting the actuating element 41 at the same time, i. that the tool holder 14 having machine part 28 is free of movement, so that namely the tool holder 14 can reach into the region of the recess or the window 32. The assembly and disassembly of the working tool 15 is thereby considerably facilitated.

The holding device 65 forms in the present case a locking device 73 for locking the machine part 28 with the guide 26. A holding element 74 of the holding device 65, which serves to hold the machine part 28 in the depth position T1, so this is not present, which is conceivable as a clamping element configured but as a detent element. The support member 74 is movably mounted about a pivot axis 75 on the machine part 28 and is in a holding position H, which may also be referred to as a detent position, in engagement with an abutment contour 76, for example on the guide 26. For example, is a support arm 77 on the abutment contour 76 on. Opposite to the holding arm 77, with respect to the pivot axis 75, there is an actuating arm 78, which has a receiving contour 79 into which the arm 69 of the depth setting handle 66 engages. Thus, when the Tiefeneinstellhandhabe 66 is adjusted in the direction of the release position L, it simultaneously actuates the retaining element 74 in the direction of the release position L or out of engagement with the abutment contour 76th

Because now the actuator 41 when adjusting in the securing position S with its actuating contour 72 on the Tiefeneinstellhandhabe 66 acts and this pivots about the pivot axis 67, it also actuates the holding member 74 also in the direction of the release position L, so that the machine part 28 and the tool holder 14 in the direction of the depth position T2 is movable.

In the depth position T2, a further latching is provided, for which purpose a holding receptacle or latch receptacle 80 is arranged on the guide 26. Another, preferably also about the pivot axis 75 mounted holding member 81 locked with this locking receptacle 80. The holding member 81 is, for example, by a spring 82 in the direction of the detent position, so for latching with the locking receptacle 80 loaded. The actuating element 41 loads in the covering position A or the operating position B, the holding element 81 in the direction of a release position in which it can not engage in the locking receptacle 80. For this purpose, for example, an actuating contour 83 is provided on the actuating element 41, for example, a curved path, which is provided with a section 84 protruding in the direction of the release position of the retaining element 81 (FIG. FIG. 1 ) loads the retaining element 81 against the force of the spring 82 in the direction of the release position. When the actuating element 41 is moved in the direction of the securing position S, the actuation contour 83, which is non-rotatably connected, for example, to the actuating element 41, simultaneously rotates a section which projects less far in the direction of the retaining element 81 than the section 85, so that the spring 82 moves the retaining element 81 in the direction of Latching position or holding position presses, so therefore the grid element or retaining element 81 when it is opposite to the holding receptacle or locking receptacle 80 engages in this.

The holding member 81 is similar to the holding member 74 configured as a two-armed lever, on one arm of the spring 82 engages while on the other arm, which engages the Locking receptacle 80 is provided, an abutment surface 85 is arranged, on which the actuating contour 83 acts.

The securing device 40 also makes electrical securing of the drive motor 13. The drive motor 13 can only be switched on when the depth adjustment handle 66 is initially actuated in the direction of the release position L. For this purpose, there is an abutment contour 86 on the arm 69 against which the switch element 21 abuts with a hook-shaped contour 87, for example, as long as the depth adjustment handle 66 is in the holding position H. If, however, the depth adjustment handle 66 is displaced in the direction of the release position L, that is, pivots about the pivot axis 67, the contour 87 is released from the abutment contour 86, so that the switch element 21 can be actuated and thus also the drive switch 23 can be switched on. The drive motor 13 can be energized.

However, an operation of the drive motor 13 is not desired in the securing position S and also not allowed. This is ensured by the securing device 40. From the switch element 21 and its base body, stands an arm 98, at the free end of an engagement element 88 is arranged. When the actuating element 41 of the securing device 40 is in the securing position S, the engagement element 88 engages in an abutment contour 89, for example an annular groove, of the actuating element 41. The switch element 21 can then no longer be pressed because, as it were, the engagement element 88 hooks into the groove or abutment contour 89. In the operating position B, however, the engagement element 88 can be moved out of the abutment contour 89 through a slot 99.

In addition, a mechanical blockage in the securing position S is given. A locking element 90 then engages in the drive elements 33, for example, the fan, a. The locking element 90 is by an actuating arm 91 which is actuated by the actuating element 41, against a force of a spring 92 out of engagement with blocking receptacles 93 on the drive element 33 adjustable. The spring 92 is supported on the housing 12 and on the locking element 90. For example, the spring 2 90 is designed as a leg spring.

For example, the locking element 90 is movably mounted with respect to the actuating arm 91. A head of the locking element 90 engages, for example, in a receptacle 94 on the free end portion of the actuating arm 91 facing the locking element 90 and is movably received there. For example, the receptacle 94 is designed as a slot. The spring 92 acts on the said head of the locking element 90 and loads it in a sense away from the actuating arm 91 in the direction of the blocking receptacles 93.

The actuating arm 91 pulls, so to speak, the locking element 90 out of engagement with the blocking receptacles 93, while it is loaded in the opposite direction by the spring 92 into engagement. Thus, it does not initially matter to the respective rotational position of the drive element 33 when the securing device 40 is moved into the securing position S. The operator can thus, for example, turn the working tool 15 a little until finally the bolt 90 engages in one of the blocking receptacles 93.

The actuating arm 91 is driven by the actuating element 41 via an eccentric gear 95 so that it makes a linear movement towards the drive element 33 (fan wheel) when adjusting the actuating element 41 in the direction of the securing position S and thus the spring 92 moves the locking element 90 into one of the blocking receptacles 93 can press. When the actuator is pivoted in the direction of the operating position B or covering position A. is, the eccentric 95 moves the actuating arm 91 in a sense away from the drive member 33, which pulls the locking element 90 out of engagement with the respective blocking receptacle 93 so to speak.

For example, the actuating arm 91 has a bearing head 96 which is mounted eccentrically in an eccentric receptacle 97 of the actuating element 41.

In the embodiment, the actuating element 41 actuates the holding element 74 so to speak indirectly, namely via the Tiefeneinstellhandhabe 66. However, it would also be an embodiment possible in which, for example, a driver 120 is provided on the actuating element 41 which can engage with the retaining element 74 to this from the holding position H in the release position L to adjust. For example, from the cover portion 45 could protrude a kind of latching hook or latch 121, which can hook with the support member 74 to pivot it in the release position L.

Further, instead of the cam gear with the example cam-like actuating contour 72 and the opposing counter contour 71 also a gear transmission, cable transmission or the like may be provided to couple the holding member 41 with the Tiefeneinstellhandhabe 66 in terms of a release movement of the holding member 74 from the release position L.

Claims (14)

1. Hand-operated power tool with a tool holder (14) for holding a working tool (15), in particular a saw blade, and with a drive motor (13), in particular electrical, mounted in a housing (12) of the hand-operated power tool (10) and for driving the tool holder (14), wherein the hand-operated power tool (10) has a mounting tool (100) for mounting the working tool (15) on the tool holder (14) and a storage socket (50) for stowing away the mounting tool (100), and wherein the hand-operated power tool (10) has a safety device (40) for movement locking of the tool holder (14) for tool change of the working tool (15), wherein the safety device (40) may be adjusted by means of an actuating element (41) between a locking position (S) in which the safety device (40) mechanically blocks start-up of the drive motor (13) and/or the tool holder (14) against driving by the drive motor (13), and an operating position (B) in which the drive motor (13) and/or the tool holder (14) are released for working operation of the hand-operated power tool (10), wherein the actuating element (41) is adjustable relative to the housing (12) of the hand-operated power tool (10) between a covered position (A) in which the storage socket (50) is at least partly covered by the actuating element (41), so that the mounting tool (100) may not be removed from the storage socket (50), and a release position (F) in which the mounting tool (100) may be removed from the storage socket (50), wherein the covered position (A) is assigned to the operating position (B) and the release position (F) is assigned to the locking position (S) of the safety device (40), characterised in that it has interlocking means for interlocking the actuating element (41) during working operation of the hand-operated power tool (10), in particular with the drive motor (13) rotating or the tool holder (14) rotating, so that the actuating element (41) cannot be moved from the covered position (A) into the release position (F).
2. Hand-operated power tool according to claim 1, characterised in that it has a spring assembly (57) located at the storage socket (50) for biasing the mounting tool (100) for the purpose of ejection from the storage socket (50).
3. Hand-operated power tool according to claim 1 or 2, characterised in that on the actuating element (41) there is provided a driver (62) for driving the mounting tool (100) into the storage socket (50) and/or out of the storage socket (50).
4. Hand-operated power tool according to any of the preceding claims, characterised in that the storage socket (50) is located on the housing (12) of the hand-operated power tool (10) accommodating the drive motor (13), wherein expediently provision is made for the storage socket (50) to include a recess on the housing (12) extending inwards from an outer wall of the housing (12) or to be in the form of such a recess.
5. Hand-operated power tool according to any of the preceding claims, characterised in that the storage socket (50) includes an intermediate space between the actuating element (41) and an outer wall of the housing (12) of the hand-operated power tool (10), or is in the form of such an intermediate space.
6. Hand-operated power tool according to any of the preceding claims, characterised in that a holder for holding the mounting tool (100) is provided on the actuating element (41), wherein the mounting tool (100) in the release position (F) may be removed from the holder and in the covered position (A) it may not be removed from the holder.
7. Hand-operated power tool according to any of the preceding claims, characterised in that it has latching means (48) for latching the mounting tool (100) in the storage socket (50) and/or for latching the actuating element (41) in the covered position (A).
8. Hand-operated power tool according to any of the preceding claims, characterised in that the safety device (40) includes a sensor (59), in particular including an electrical key switch, for detecting the presence of the mounting tool (100) in the storage socket (50), wherein the safety device (40) is designed to switch off the drive motor (13) or to prevent the drive motor (13) from starting up, if the sensor (59) determines that the mounting tool (100) is not in the storage socket (50), and/or has output means (60) to output information as to whether or not the mounting tool (100) is in the storage socket (50), and/or that the safety device (40) has an interlocking device, in particular a locking device and/or latching device, for interlocking a drive switch (23) for the drive motor (13) which, with the mounting tool (100) removed from the storage socket (50), assumes an interlocking position locking the drive switch (23) and may be adjusted by the mounting tool (100) into a release position releasing the drive switch (23) for switching the drive motor (13), when the mounting tool (100) is in the storage socket (50).
9. Hand-operated power tool according to any of the preceding claims, characterised in that the actuating element (41) in the covered position (A) conceals a first section (51) of the storage socket (50), and a second section (52) of the storage socket (50) next to the actuating element (41) in the covered position (A) is open to the environment and/or visible through a transparent cover (17).
10. Hand-operated power tool according to any of the preceding claims, characterised in that the mounting tool (100) when located in the storage socket (50) may be grasped by an operator and serves as operating handle for the actuating element (41), so that the actuating element (41) may be actuated with the aid of the mounting tool (100) on removal from the storage socket (50) from the covered position (A) into the release position (F), and therefore also the safety device (40) may be moved into the locking position (S).
11. Hand-operated power tool according to any of the preceding claims, characterised in that there is located next to the storage socket (50) a handgrip recess facilitating grasping of the mounting tool (100) and which in the covered position (A) is at least partly concealed by the actuating element (41).
12. Hand-operated power tool according to ,any of the preceding claims, characterised in that the mounting tool (100) comprises an Allen key (107) and/or the working tool (15) may be fastened to the tool holder (14) by means of a screw element, in particular a threaded bolt or a threaded nut, and the mounting tool (100) has an interlocking contour (102) for positive engagement in the screw element.
13. Hand-operated power tool according to any of the preceding claims, characterised in that the mounting tool (100) includes a actuating arm (101) with an interlocking contour (102) for actuating the tool holder (14) and a handle arm (103) at an angle to the actuating arm (101) for grasping by an operator, wherein one of the arms is covered by the actuating element (41) in the covered position (A), and the other arm is accessible from an outer side of the housing (12).
14. Hand-operated power tool according to any of the preceding claims, characterised in that the actuating element (41), on moving into the release position (F), transfers a holding fixture (65) into a release position (L), so that a machine component (28) of the hand-operated power tool (10) including the tool holder (14) and mounted movably on a guide body (11) with the aid of a depth-setting bearing (25), may be moved relative to the guide body (11) from a first depth position (T1) into a second depth position (T2) in which the tool holder (14) is accessible for a changeover of the working tool (15).

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