EP2647473A1 - Handle and manual tool machine - Google Patents

Abstract

The tool has fastening units (10) for releaseably fastening a handle e.g. additional handle, to the tool, where the fastening units comprise an extension (5) e.g. pin, that is accommodated in a recess in segments. The extension is arranged on the handle or tool and the recess is arranged in the tool or handle. The fastening units comprise a spring element (6) such as U-shaped round wire spring, that is adjustable relative to the extension and engaged during establishing and/or releasing and/or securing a form-fit and/or friction-fit connection between the handle and the tool.

Description

State of the art

The invention relates to a hand tool, in particular an electric hand tool, according to the preamble of claim 1 and a handle for a hand tool according to claim 25.

There are additional handles for electric hand tool machines are known, which are releasably secured by means of fasteners on the power tool. For example, in the DE 36 19 520 A1 an auxiliary handle for hand drills described which comprises a cooperating with a clamping screw clamping ring, by means of which the auxiliary handle against rotation and axial displacement relative to the spindle neck of a hand drill is securable. A disadvantage of the known embodiment is that the fasteners attack the hand drill and thereby can be a hindrance in certain work (large interference contour).

In angle grinders, it is known to screw the equipped with a threaded extension handle with a female thread recess of the power tool. In order to ensure a sufficiently strong connection, the combination external thread / internal thread has a comparatively large axial extension, so that the screwing takes comparatively much time, which can be perceived as annoying with changing activities.

Disclosure of the invention Technical task

The invention is therefore based on the object, a hand tool, comprising proposing a fixable on this with the aid of fasteners handle, the fasteners should be designed so that on the one hand a simple, safe and preferably fast fixation of the handle on the power tool is possible and that on the other hand, the fastening means have the least possible interference contour. Furthermore, the object is to propose a correspondingly improved handle for a hand tool.

Technical solution

The object is achieved in terms of the power tool with the features of claim 1 and in terms of the handle with the features of claim 26. Advantageous developments of the invention are specified in the subclaims. All combinations of at least two features specified in the description, the claims and / or the figures also fall within the scope of the invention.

The invention is based on the idea to provide the fastening means in addition to the extension with a relative to the extension adjustable element that cooperates during manufacture or during release and / or securing a positive and / or non-positive connection between the handle and the machine tool, ie is involved. Here, "cooperation of the element" is understood both an embodiment in which the element directly produces the positive and / or frictional connection, as well as an embodiment in which the element has only one adjustment or actuation function and / or the fixation against a unintentional release secures. Under a recess in the context of claim 1 is a, not necessarily cylindrical, recess, opening or socket in the power tool or in the housing of the power tool or in a fixed to the power tool, separate from the handle component or handle, preferably the front side in Handle, understood, which serves exclusively or, inter alia, to accommodate the extension and / or the additional element. Preferably, the recess is designed internal thread-free. Under an extension in the sense of claim 1 is a, not necessarily cylindrical, in particular external thread-free extension (eg bolt) understood that in the recess, not necessarily form-fitting, at least in part is receivable. It is within the scope of the invention to assign the extension of the handle and the recess of the power tool, which embodiments are to be encompassed by the invention, in which the extension and the recess are arranged reversed, ie the recess in the handle and the extension in the power tool are arranged. Depending on the embodiment of the embodiments described in more detail below, it is within the scope of the invention to assign the extension a latching and / or adjusting and / or clamping function. By providing the at least one element, which belongs to the fastening means and is provided in addition to the extension, there are multiple possibilities for the concrete realization of the fastening means. Particularly preferred embodiments are those in which the adjustable relative to the extension element cooperates with the extension or another component of the fastening means such that with the extension or the component or with the element itself a positive and / or non-positive connection between the handle and the hand tool is manufacturable.

It is further within the scope of the invention that either the extension actively relative to the element, or the active element relative to the extension or both the element and the extension are each actively adjustable relative to each other.

In a further development of the invention is advantageously provided that the extension only in one or more specific relative positions, d. H. (Rotary) orientations on the hand tool, can be specified. This can be realized, for example, in that the recess and / or the extension are not rotationally symmetrical and can be inserted into one another only in certain relative rotational positions. Such an embodiment, in which the extension can be inserted in a defined manner directed into the recess, has the advantage that the handle also not (as in the prior art) must be rotationally symmetrical, but that the shape of the handle due to the position-oriented mounting option of Handle on the power tool, for example, by providing circumferentially extending and axially adjacent troughs, can be adapted to the shape of the user's hand.

• Gemäß einer ersten Ausführungsform ist das zusätzliche Element als Federelement ausgebildet, das zwischen einer Freigabeposition und einer Fixierposition verstellbar ist, wobei das Federelement in seiner Fixierposition in eine Aussparung (Hinterschnitt) des Fortsatzes eingreift. Bevorzugt ist eine Ausführungsform, bei der das Federelement, zumindest näherungsweise U-förmig ausgebildet ist, wobei in der Fixierposition beide im Wesentlichen parallel zueinander verlaufenden Schenkel des Us in eine gemeinsame oder in jeweils eine Aussparung des Fortsatzes eingreifen. Für den Fall, dass eine lageorientierte Fixierung des Handgriffes relativ zur Handwerkzeugmaschine realisiert werden soll, ist eine Ausführungsform bevorzugt, bei der die Schenkel des U-förmigen Federelementes in der Fixierposition mit zwei parallel zueinander verlaufenden Aussparungen im Fortsatz zusammenwirken. Zum Lösen der Verbindung müssen die Schenkel lediglich auseinandergespreizt werden.

With regard to the specific embodiment of the adjustable relative to the extension element and with regard to its interaction with the recess and / or the extension and / or another element, there are a variety of implementation options. These are described below:

• According to a first embodiment, the additional element is designed as a spring element which is adjustable between a release position and a fixing position, wherein the spring element engages in its fixing position in a recess (undercut) of the extension. Preferred is an embodiment in which the spring element, at least approximately U-shaped, wherein in the fixing position both substantially mutually parallel legs of the US engage in a common or in each case a recess of the extension. In the event that a position-oriented fixation of the handle is to be realized relative to the power tool, an embodiment is preferred in which the legs of the U-shaped spring element cooperate in the fixing position with two mutually parallel recesses in the extension. To release the connection, the legs need only be spread apart.

According to a further embodiment it is provided that the extension can be expanded in the radial direction by means of the element. Preferably, the extension is for this purpose, preferably multiple, slotted in the longitudinal direction. By adjusting the element relative to the extension, the at least one longitudinal section relative to each other adjustable portions of the extension are spread in the radial direction, whereby the extension is frictionally clamped in the recess. With regard to the formation of the element in longitudinally slotted extension, there are different embodiments.

According to a first embodiment variant, the element is designed as an adjustable soul in the axial direction within the extension. In this embodiment, the at least one longitudinal slot preferably extends to the free end of the extension. Alternatively, it is conceivable to form the element as an eccentric bolt, wherein by spreading the eccentric pin a spreading, ie radial expansion of the extension, is realized. Preferred is an embodiment in which the extension is not continuously slotted in the provision of an eccentric bolt to its free end, but in which the at least one longitudinal slot ends axially in front of the free end pointing in the direction of the power tool. According to a further embodiment, it is provided that the element is designed as, preferably self-locking, wedge, which is adjustable in the axial direction relative to the extension, wherein the clamping wedge is preferably spring-loaded in the direction of its fixing position and in the fixing position by clamping (frictional) with the Inner circumference of the recess cooperates.

According to a further alternative embodiment, the element is designed as a latching hook, which is preferably spring-loaded in the direction of its fixing position. It is particularly preferred if the latching hook is arranged within the extension, preferably within a longitudinal slot of the extension. If necessary, these or all other embodiments described in this application can be combined with an anti-twist device for the handle. In particular, when the latching hook is provided with an insertion-side chamfer, the handle can be safely fixed by a simple axial pushing movement on the power tool, since the latching hook is initially adjusted against the fixing direction when inserted into a recess associated with this and upon reaching a certain insertion position can automatically pivot into the fixing position.

According to a further alternative embodiment, the element is in the extension, radially adjustable ball or as a set of balls, comprising a plurality of balls formed. The balls can be adjusted between a retracted in the radial direction release position or in a radially outward fixing position, wherein the at least one ball is either received in the fixing position in a recess of the recess or a component, preferably the recess, engages behind in the radial direction. The adjustment in the radial direction of the formed as at least one ball element is preferably carried out by means of an axially adjustable within the handle cone rod.

According to a further embodiment, the element is rotatably mounted relative to the extension and that about an axis parallel to the longitudinal central axis of the extension extending axis (eccentric axis). As a result, the eccentric element between a release position in which it is aligned in the axial direction with the extension and a fixing position in which it projects beyond the extension in the radial direction and engages behind a component or is received in a recess, adjustable.

A further alternative embodiment provides that the actual extension is designed as a latching hook, which is adjustable between a release position and a fixing position by means of the, preferably designed as a cone rod, element which is adjustably mounted in the axial direction. Preferably, the required longitudinal d. H. Axialverstellbarkeit of the element by means of a disc to be rotated, for example, has an internal thread and cooperates with this with an external thread of the element realized. Particularly preferred is an embodiment with two, preferably adjustable in opposite directions, locking hooks.

According to an alternative embodiment it is provided that the element is designed as a radially adjacent to the extension arranged latching hook. Preferably, the at least one latching hook in the radial direction, preferably outwardly, spring-loaded. Particularly preferred is an embodiment with two adjustable in opposite directions locking hooks.

According to a further embodiment of the invention, the fastening means are designed as a bayonet closure or comprise such. In this case, a bayonet closure is understood to mean a closure which can be locked by turning a closure component, preferably by 90 °, whereby the twisting movement is followed by a (preferably pure) insertion movement, preferably in the handle longitudinal direction. Preferred is an embodiment of the bayonet closure, in which the closure component to be twisted during the twisting (actual locking) slides along a thread-shaped slope, resulting in an axial movement of the handle relative to the power tool in the direction of the power tool results.

As an independent invention, an embodiment is disclosed at this point, which should be claimed separately and in which the fastening means are designed as a bayonet closure, wherein in the realization of the bayonet closure on the additional, relative to the recess and the extension adjustable element is waived or can be waived. In other words, the fastening means in this embodiment (exclusively) consist of the extension and the recess, which together form a bayonet closure. Only optionally, the attachment means may comprise an additional, adjustable relative to the extension element.

However, an embodiment is preferred in which, in addition to the recess and the extension, an element that is adjustable relative to these components is provided as part of the fastening means.

According to a possible embodiment variant of the bayonet closure, the additional element is designed as a locking element arranged axially adjacent to the extension, which is rotatable between a release position and a fixing position relative to the extension about an axis of rotation, which preferably coincides with the longitudinal center axis of the extension in the fixing position of the extension is projected in the radial direction of the element and thus locks the handle.

It is also an embodiment feasible, in which the additional element as a unintentional opening of the bayonet lock preventing element, that is, as a fuse element is formed. For example, the element for this purpose is arranged to be adjustable in the axial direction and prevents in the fixing position, a relative rotational movement between the handle and the housing of the power tool, characterized in that it engages in a recess pointing in the axial direction.

Particularly preferred is an embodiment of the bayonet closure, wherein a (radially) thickened portion of the extension during rotation of the handle relative to the housing of the power tool along a curved slope of a component slides, wherein the slope of a movement of the entire hangriffes in the direction of the power tool caused. The provided with the slope component is engaged behind by a continuation portion in the fixing position. The component may be formed, for example, as held in the housing of the power tool metal or as part of the housing, d. H. be formed by the housing.

Particularly preferred is an embodiment in which the adjustable relative to the extension element is designed as a spring loaded in the axial direction Ausdrückstift, the force of the handle when not (correctly) engaged bayonet handle of the housing of the power tool away, so the extension of the Recess ejects.

To be able to use the hand tool with handles according to the prior art with a threaded extension, an embodiment is preferred in which the extension of the bayonet closure only corresponds to the core hole diameter of the recess or is formed thinner and the recess with an internal thread, preferably with metric M14 thread.

In order to prevent accidental opening of the locked or closed bayonet closure, an embodiment is preferred in which the adjustable relative to the extension element is designed as a clamping element with which the extension in the direction of its fixing position can be tensioned. For example, the element is designed as an internally threaded ring, which cooperates with an external thread of the handle and which is rotatable against the housing of the power tool and / or the extension receiving recess. Alternative ways of forming the element as a clamping element, for example by training as a clamping wedge, are alternatively or additionally feasible.

Of particular advantage is an embodiment in which the element is designed as a latch of the bayonet closure, wherein the bolt projects beyond the extension in the radial direction and in the axial direction relative to the extension is adjustable, so that the handle against the housing of the power tool clamped is and thus unintentional opening of the bayonet lock is prevented.

According to a further alternative embodiment, the element is formed as at least one in the radial direction, preferably outwardly, spring-loaded locking element, which is automatically adjusted to a fixing position when closing the bayonet closure, ie when turning the handle, preferably by 90 °, in the locking element prevents a relative movement, in particular a relative rotational movement, between the handle and the housing of the power tool.

According to an alternative embodiment, the additional element is formed as a spring-loaded in the axial direction of the locking element, which is axially automatically adjusted in the rotational closure of the bayonet closure in a fixing, ie locking position, in which a further relative rotational movement is prevented between the handle and the housing of the power tool.

According to a particularly preferred embodiment, the adjustable relative to the extension element is part of the bayonet closure, wherein the element is arranged rotatable relative to the extension, and wherein the element projects beyond the extension in the fixing position in the radial direction and thereby a component, preferably the Recess, engages behind. In the release position, the element is preferably aligned in the longitudinal direction with the extension or lies radially within the imaginary, elongated in the longitudinal direction, outer contour of the extension.

In a further development of the invention is advantageously provided that a, at least partially formed by the recess, preferably designed as a laterally open insertion pocket, receptacle is provided for the fixed to the extension element, wherein the preferably platelet-shaped element preferably has an internal thread with which it interacts with an external thread of the extension. By relative rotation of the extension, preferably together with the handle, relative to the element, the element can be clamped in the receptacle. It is also an embodiment conceivable in which the element described above is firmly connected to the extension, such that no relative movement between this element and the extension is possible, in which case an additional element according to the invention is provided, for example a Clamping wedge, which is adjustable relative to the extension and with which the fixed to the extension or integrally formed with this element in the recess can be clamped.

In a further development of the invention is advantageously provided that the extension is part of a pivot bearing. Preferably, the extension is formed at right angles, preferably such that a parallel to the front side of the handle extending leg of the extension forms the axis of rotation of the pivot bearing. It is particularly advantageous, in addition to a projection formed in this way, to provide at least one latching hook formed by the additional element, which secures the handle in the fixing position on the handheld power tool.

According to an alternative embodiment it is provided that a, in particular of the recess formed, or the recess comprehensive, in cross section preferably T-shaped guide slot is provided for the element in which the element, preferably together with the extension, relative to the housing of the power tool is adjustable. The guide slot is engaged in the fixing of the relative to the extension adjustable, on the extension, for example by means of a threaded element defined behind, wherein the element is pressed by the extension by rotation of the extension relative to the element against the back of the guide slot, whereby a release of the established connection between the power tool and the handle is safely avoided. Other ways of securing the rear handle against unintentional release, for example with a wedge-shaped, relative to the extension adjustable element, are additionally or alternatively feasible. It is preferred if the guide slot is formed by at least two housing shells.

Particularly preferred is an embodiment in which the guide slot extends along the longitudinal extension of the power tool or in the circumferential direction at least over a portion of the power tool, so that the handle by adjusting the extension or of the element in the guide slot relative to the power tool or the housing the power tool can be adjusted and at any point, more preferably by relative rotation of the extension to the element, in particular together with the handle can be fixed.

Particularly many adjustment options or mounting options of the handle relative to the housing of the power tool are obtained in the event that the handle via a pivot joint relative to a slider is pivotable.

The invention also leads to a handle for a hand tool machine described above, wherein the handle has either the extension or the recess and possibly the adjustable relative to the extension element, said element may also be associated with the power tool.

Brief description of the drawings

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings. In the drawings, in each case the handle of the extension and the power tool or their housing is associated with the recess. However, it is a contrasted position reversal of recess and extension feasible.

• Fig. 1a und
  unterschiedliche Ausführungsformen eines Handgriffes für eine Handwerkzeugmaschine, bei denen das verstellbare Element als Federelement ausgebildet ist,
• Fig. 2a und
  zwei unterschiedliche, teilweise geschnittene Ansichten eines Handgriffes mit mehrfach geschlitztem Fortsatz, in dem das als Seele ausgebildete, axial verstellbare Element angeordnet ist,
• Fig. 3a und
  zwei Ansichten einer Ausführungsform eines Handgriffes mit in radialer Richtung aufspaltbarem Fortsatz, wobei das den Fortsatz aufweisende Element als Exzenterbolzen ausgebildet ist,
• Fig. 4a und
  zwei Ansichten einer Ausführungsform eines Handgriffes für eine Handwerkzeugmaschine, bei der das Element als in axialer Richtung verstellbarer Klemmkeil ausgebildet ist,
• Fig. 5a und
  zwei Ansichten einer Ausführungsform eines Handgriffes, bei der das Element als im Fortsatz angeordneter, verschwenkbar gelagerter Rasthaken ausgebildet ist,
• Fig. 6a und
  zwei teilweise geschnittene Ansichten einer Ausführungsform eines Handgriffes, bei der mehrere, in radialer Richtung zu dem Fortsatz verstellbare, als Kugeln ausgebildete Elemente vorgesehen sind,
• Fig. 7a und
  zwei Ansichten einer Ausführungsform eines Handgriffes, bei der das Element um eine Exzenterachse relativ zu dem Fortsatz verdrehbar angeordnet ist,
• Fig. 8a und
  zwei unterschiedliche Ansichten einer Ausführungsform, bei der zwei, jeweils einen Fortsatz bildende, in radialer Richtung verstellbare Rasthaken vorgesehen sind, die mittels eines in axialer Richtung verstellbaren, zentrischen Elementes in radialer Richtung verstellbar sind,
• Fig. 9a und
  unterschiedliche Ansichten eines Handgriffes mit radial benachbart zum Fortsatz angeordneten, als Rasthaken ausgebildeten Elementen,
  einen Ausschnitt des Gehäuses der Handwerkzeugmaschine mit Ausnehmungen, in die die als Rasthaken ausgebildeten Elemente gemäß den Fig. 9a und 9b in der Fixierposition eingreifen können,
• Fig. 10a und
  unterschiedliche Ansichten einer Ausführungsform eines Handgriffes, bei der das Element axial benachbart zu dem Fortsatz und relativ zu diesem verdrehbar ausgebildet und angeordnet ist, wobei das Element und der Fortsatz sowie die nicht gezeigte Ausnehmung Teil eines Bajonett-Verschlusses sind,
• Fig. 11a und
  unterschiedliche Ansichten einer Ausführungsform eines Handgriffes, bei der der Fortsatz Bestandteil eines Bajonett-Verschlusses ist und das Element als Verriegelungselement und/oder Auswurfstift ausgebildet ist,
• Fig. 12a und
  unterschiedliche Ansichten einer Ausführungsform des Handgriffes mit Bajonett-Verschluss, wobei das von dem Fortsatz in der Fixierposition hintergriffene Bauteil von dem Gehäuse der Handwerkzeugmaschine gebildet ist,
• Fig. 13a und
  unterschiedliche Ansichten einer Ausführungsform des Handgriffes mit Bajonett-Verschluss, wobei das verstellbare Element als Spannscheibe mit Innengewinde ausgebildet ist, das relativ zu dem Fortsatz durch Drehen verstellbar ist,
  eine Ausnehmung für den Fortsatz gemäß den Fig. 13a und 13b im Gehäuse,
• Fig. 14a und
  unterschiedliche Ansichten einer Ausführungsform des Handgriffes mit Bajonett-Verschluss, bei der das verstellbare Element als Teil des Bajonett-Verschlusses ausgebildet ist und einen Riegel bildet, der den Fortsatz in radialer Richtung überragt und axial relativ zu dem Fortsatz verstellbar ist,
  eine perspektivische Teilansicht der Ausnehmung für den Fortsatz gemäß den Fig. 14a und 14b,
• Fig. 15a und
  unterschiedliche Ansichten einer Ausführungsform eines Handgriffes mit einem Bajonett-Verschluss und in radialer Richtung federkraftbeaufschlagten, als Verriegelungselemente ausgebildeten Elementen,
• Fig. 16a und
  unterschiedliche Ansichten einer Ausführungsform des Handgriffes mit einem Bajonett-Verschluss, wobei die Elemente in axialer Richtung federkraftbeaufschlagte Verriegelungselemente sind,
• Fig. 17a und
  unterschiedliche Ansichten einer Ausführungsform des Handgriffes mit einem Bajonett-Verschluss, wobei das Element Bestandteil des Bajonett-Verschlusses ist und relativ zu dem Fortsatz verdrehbar angeordnet ist,
• Fig. 18a und
  unterschiedliche Ansichten einer Ausführungsform des Handgriffes mit einem plättchenförmigen Element, das mittels eines Gewindes am Fortsatz festgelegt ist, wobei das Element durch Verdrehen des Fortsatzes gegen die Rückseite einer Aufnahme verspannbar ist,
• Fig. 18c und
  unterschiedliche Ausnehmungsausfüh-rungsformen zur Aufnahme des Fortsatzes und
• Fig. 19a und
  unterschiedliche Ansichten einer Ausführungsform eines Handgriffes mit einem abgewinkelten Fortsatz, der Teil einer Schwenklagerung ist und mit einem als Rasthaken ausgebildeten, relativ zu dem Fortsatz verstellbaren, Element,
  eine Handwerkzeugmaschine mit dem in den Fig. 19a und 19b gezeigten Griff in zwei unterschiedlichen Schwenkstellungen,
  eine weitere Ausführungsform eines Handgriffes, bei dem an dem Fortsatz ein Element angeordnet ist, das in einer Führungskulisse geführt und durch Verdrehen des Fortsatzes relativ zu dem Element in der Führungskulisse verspannbar ist,
  eine Explosionsdarstellung einer möglichen Ausführungsform eines Handgriffes,
  eine weitere alternative Ausführungsform des Handgriffes und
  unterschiedliche Befestigungspositionen des Handgriffes an der Handwerkzeugmaschine.

Show it:

• Fig. 1a and
  different embodiments of a handle for a hand tool, in which the adjustable element is designed as a spring element,
• Fig. 2a and
  two different, partially sectioned views of a handle with multiply slotted extension, in which the soul formed, axially adjustable element is arranged,
• Fig. 3a and
  two views of an embodiment of a handle with splittable extension in the radial direction, wherein the extension element having the element is designed as an eccentric pin,
• Fig. 4a and
  two views of an embodiment of a handle for a hand tool, in which the element is designed as an adjustable clamping wedge in the axial direction,
• Fig. 5a and
  two views of an embodiment of a handle, in which the element is designed as an extension arranged in a pivotally mounted locking hook,
• Fig. 6a and
  two partially sectioned views of an embodiment of a handle, in which a plurality of adjustable in the radial direction to the extension, designed as balls elements are provided
• Fig. 7a and
  two views of an embodiment of a handle, wherein the element is arranged rotatable about an eccentric axis relative to the extension,
• Fig. 8a and
  two different views of an embodiment in which two, each one extension forming, adjustable in the radial direction latching hooks are provided, which are adjustable by means of an axially adjustable, central element in the radial direction,
• Fig. 9a and
  different views of a handle with radially adjacent to the extension arranged as locking hooks formed elements,
  a section of the housing of the power tool with recesses into which the elements designed as latching hooks according to the Fig. 9a and 9b can intervene in the fixation position,
• Fig. 10a and
  different views of an embodiment of a handle in which the element is axially adjacent to the extension and rotatable relative to this formed and arranged, wherein the element and the extension and the not shown recess are part of a bayonet closure,
• Fig. 11a and
  different views of an embodiment of a handle, wherein the extension is part of a bayonet closure and the element is designed as a locking element and / or ejector pin,
• Fig. 12a and
  different views of an embodiment of the handle with bayonet closure, wherein the engaged behind by the extension in the fixing position component is formed by the housing of the power tool,
• Fig. 13a and
  different views of an embodiment of the handle with bayonet closure, wherein the adjustable element is designed as a clamping disc with internal thread, which is adjustable relative to the extension by turning,
  a recess for the extension according to the Fig. 13a and 13b in the case,
• Fig. 14a and
  different views of an embodiment of the handle with bayonet closure, wherein the adjustable element is formed as part of the bayonet closure and forms a latch, which projects beyond the extension in the radial direction and is axially adjustable relative to the extension,
  a partial perspective view of the recess for the extension according to the Figs. 14a and 14b .
• Fig. 15a and
  different views of an embodiment of a handle with a bayonet closure and spring-loaded in the radial direction, designed as locking elements elements,
• Fig. 16a and
  different views of an embodiment of the handle with a bayonet closure, wherein the elements are spring-loaded locking elements in the axial direction,
• Fig. 17a and
  different views of an embodiment of the handle with a bayonet closure, wherein the element is part of the bayonet closure and is rotatable relative to the extension,
• Fig. 18a and
  different views of an embodiment of the handle with a plate-shaped element which is fixed by means of a thread on the extension, wherein the element is clamped by rotation of the extension against the back of a receptacle,
• Fig. 18c and
  different Ausnehmungsausfüh-forms for receiving the extension and
• Fig. 19a and
  different views of an embodiment of a handle with an angled extension, which is part of a pivot bearing and with a locking hook designed as, relative to the extension adjustable element,
  a hand tool with the in the FIGS. 19a and 19b handle shown in two different pivot positions,
  a further embodiment of a handle, wherein on the extension, an element is arranged, which is guided in a guide slot and is braced by rotation of the extension relative to the element in the guide slot,
  an exploded view of a possible embodiment of a handle,
  another alternative embodiment of the handle and
  different attachment positions of the handle on the hand tool.

Embodiments of the invention

In the figures, the same components and components with the same function with the same reference numerals.

In the Fig. 1a and 1b First embodiments of a handle 1 for a hand tool are shown. The handle 1 comprises a handle portion 2 and a fixing portion 3, wherein axially between the handle portion 2 and the fixing portion 3, a vibration damping portion 4 is arranged made of an elastic material. This prevents or minimizes the vibration transmission from the power tool and the mounting portion 3 on the handle portion. 2

The attachment portion 3 has an extension 5 (bolt) which can be inserted into a not shown recess (bushing) of the hand tool, also not shown. Within the hand tool an element 6 is fixed, which is in the embodiment shown as a spring element, more precisely as a U-shaped round wire spring with two substantially parallel legs 7, 8, is formed. In Fig. 1a the element 6 is shown in a fixing position, in which the legs 7, 8 in each groove-shaped, extending in the circumferential direction of the extension 5, recesses 9 engage, wherein the mutually parallel recesses 9 are arranged on two spaced apart sides of the cylindrical extension 5 ,

For reasons of centering of the cylindrical extension 5 is formed in the end frusto-conical shape. The element 6 and the extension 5 together with the not shown recess for receiving the extension fastener 10 for releasably securing the handle designed as an additional handle 1. Due to the provision of the two mutually parallel recesses 9, the handle 1 can be set exclusively oriented to the power tool , namely in the shown and rotated by 180 ° to the mounting position.

In the embodiment according to Fig. 1b is a single, designed as a circumferential groove, recess provided in the bolt-shaped extension 5, so that an orientation-free fixation of the handle 1 on the power tool is possible.

To release the fixation or the fastening means 10, the legs 7, 8 of the element 6 must be spread open, so that the undercut 9 formed by the recesses is free again and the handle 1 can be removed in the sequence in the axial direction. For spreading the legs 7, 8, a not shown spreader can be provided, which also indicates whether the Handle 1 is engaged or not. This expansion element is resiliently mounted, for example in the axial direction and can be arranged both centrally and eccentrically with respect to the cylindrical extension 5. The handle 1 according to the Fig. 1a and 1b can be secured against unintentional opening, for example by means of a rotation lock on the housing of the power tool.

In the following, further embodiments of handles and / or hand tool machines are described. It is essentially only to differences from the embodiments according to the Fig. 1a and 1b so as to avoid repetition in terms of the similarities on the Fig. 1a and 1b and the associated description is referenced.

In the Fig. 2a and 2b is a further embodiment of a handle 1 for a hand tool shown. The attachment portion 3 and the attachment means 10 comprise a bolt-shaped extension 5, which is formed several times slit, wherein the longitudinal slots 11, which divide the extension 5 fan-like into sub-segments of a relative to the hangriff 1 lower portion (base) of the extension fifth up to its free end, the conical end portion, arranged by passing or formed. Within the extension 5 is an element 6, which is formed in this embodiment as a centric soul added. The element 6 is adjustable in the axial direction by means of a rotary element 12, which is arranged adjacent to the handle section 2. By axial adjustment of the conical end portion 13 of the rod-shaped element 6, ie in Fig. 2b in the plane of the drawing to the right, the extension 5 is widened in the radial direction and the fixation of the handle 1 is thus realized frictionally on the friction between the outer periphery of the extension 5 and the recess, not shown in the power tool. Other mechanisms for the axial adjustment of the element 6 within the extension 5 are alternatively feasible.

In the Fig. 3a and 3b is a further embodiment of a handle 1 for a hand tool shown. Evident is an end-side extension 5, which is slotted in the longitudinal direction, wherein the single longitudinal slot 11 does not continue to the free end of the extension 5. Within the intentionally weakened due to the longitudinal slot 11 extension 5 is a not shown, designed as an eccentric, element 6 is arranged. By turning an outer clamping lever 14 in the direction of the arrow designed as eccentric element 6 expands the extension 5 in the radial direction, whereby a frictional connection between the extension 5 and the recess, not shown, is made in the power tool. To release the handle 1 and the fastener 10, the element 6 is rotated back into the starting position depending on the design of the eccentric bolt or rotated beyond a maximum point in the clamping direction until it is exceeded and thus in the consequence of the clamping pressure (in the radial direction) again subsides.

In the Fig. 4a and 4b is a further embodiment of a handle 1 for a hand tool shown. Evident is the end-side, cylindrical extension 5 with its conically tapering end portion. In a longitudinally facing slot 15 within the extension 5, an adjustable in the axial direction element 6 is arranged, which is formed in the embodiment shown as a clamping wedge, which is adjustable along a slope 16 in the extension 5. By axial displacement of the element 6, this is moved in the radial direction outwards and thus clamped the extension 5 within the not shown recess of the power tool. How out Fig. 4b can be seen, the element 6 is spring-loaded by means of a spring 17 in the direction of its fixing position. The provision of the element 6 in its release position can be realized in various ways. For example, in the Fig. 1a to 3d shown solutions realized. Alternatively, it is conceivable to provide an integrated in the handle 1 turntable, which exerts a restoring force on the element 6 by an axially acting wedging plane and thus repeals the compression produced. By choosing the angle (influenced by the angle of the slope 16 and / or the wedge angle itself), the compression produced can be secured self-locking.

If required, a position-oriented mounting of the handle 1 can be realized in the handle 1 shown or in all other handles shown, for example by chamfering the extension and providing a corresponding counter surface (bevel) in the recess of the power tool.

In the Fig. 5a and 5b a further embodiment of a handle 1 is shown, wherein also this handle 1 comprises a bolt-shaped extension 5, in which an element 6 is arranged, wherein this element 6 is formed as a latching hook is and in the radial direction relative to the extension 5 about a pivot axis 18 is pivotally mounted. The element 6 is spring-loaded by means of a spring 17 in the direction of its fixing position.

In Fig. 5b It is shown that the extension 5 passes through a recess 19 in the power tool, wherein the latching hook 6 with a nose 20, the recess 19 having the component 21 engages behind in the radial direction, whereby the handle 1 is fixed to the power tool. To release the catch hook must be pivoted against the spring force of the spring 17 into the extension 5 only. By providing a run-on slope 22 (contact surface) an automatic adjustment of the element 6 in its release position against the spring force of the spring 17 is made possible when inserting the handle 1 in the power tool. After reaching the in Fig. 5b shown axial position of the extension 5 pivots the element 6 automatically in the fixing position. In Fig. 5a a pointing in the axial direction web 23 is shown. This forms an anti-rotation, which can be realized in any other handles described in the application. The rotation is used to allow the assembly of the handle 1 on the power tool only in one or more defined position / s.

In the Fig. 6a and 6b another embodiment of a handle 1 is shown. The handle 1 comprises a substantially cylindrical extension 5, in which a plurality of elements 6 designed as balls are arranged to be radially displaceable. The fastening means 10 or the ball coupling formed by the elements 6 is designed such that the spherical elements 6 are held captive in the extension 5. Within the designed as a hollow pin extension in the axial direction adjustable cone rod 24 is arranged. The plug stem 24 is by means of a frontally acting on this spring in the plane according to Fig. 6b Federkraftbeaufschlagt to the right, ie in an adjustment position in which the elements 6 (balls) are in a radially extended fixing position, in which they engage behind the recess 19 a component 21 in the radial direction. For example only, a pressure element 25 is provided for axial displacement of the spring rod, which is arranged eccentrically within the handle portion. By axial pressing of the pressure element 25 (extension of the plug stem 24), the plug stem 24 is moved counter to the force of the spring 17 in the plane of the drawing to the left, whereby the elements 6 from the fixing position be adjusted radially inward. There are also conical or conical designs of the plug stem 24 can be realized by which the elements 6 are pushed back even radially inwardly. It is also possible to apply the elements 6 (balls) directly itself by at least one spring in the radial direction outwards with a spring force.

In the Fig. 7a and 7b Further embodiments of a handle 1 are shown. Evident is an anti-rotation formed by axial webs 23. It can also be seen that on the bolt-shaped extension 5, an element 6 is arranged, which between the in Fig. 7a shown release position in which it is aligned with the extension 5 in the longitudinal direction and in Fig. 7b indicated by dashed lines fixing position by pivoting about an eccentric shaft 26 is adjustable. The eccentric shaft 26 extends at a distance and parallel to the longitudinal central axis of the extension 5. In the in Fig. 7b indicated fixing position engages behind the element 6, for example, in Fig. 6b shown component 21 of the power tool. For example only is provided as an actuating means 27 for pivoting the element 6 relative to the extension 5, an end arranged on the handle 1 adjusting lever, which may alternatively be formed, for example, as a hub.

In the embodiment according to the Fig. 8a and 8b the handle 1 has a non-bolt-shaped extension 5. Instead of a bolt-shaped extension 5, two adjustable in opposite radial directions, rasthakenförmige extensions 5 are provided. By axial adjustment of a cone-shaped element 6, the extensions 5 between a radially inwardly directed release position and a radially outwardly directed fixing position, in which the extensions 5 engage behind a component of the power tool, can be adjusted. For axial adjustment of the element 6, an end-side disk-shaped actuating device 27 is arranged in the embodiment shown on the handle 1, which has an internal thread, with which it is in engagement with an end-side external thread of the element 6. Alternatively, other adjustment options for the extensions 5 and / or the element 6 can be provided.

In the Fig. 9a and 9b a further embodiment of a handle 1 for a hand tool is shown, wherein the embodiment shown of the handle 1 with the in Fig. 9c shown recess 19 and the holes 28th interacts. The handle 1 comprises an end, cylindrical and centrally arranged extension 5 with a conically tapered end portion and two adjustable in opposite radial directions, each designed as a latching hook, elements 6. The elements 6 are in the in Fig. 9c indicated holes 28 inserted and latched within the power tool. The in the Fig. 9a and 9b shown handle 1 can be fixed in two oriented mounting positions on the power tool. The elements 6 are spring-loaded in the radial direction outwards and thus automatically pivot into their fixing position (rear engagement position). To release the elements 6, ie for transferring into a radially inwardly directed release position, side unlocking buttons 29 are provided on the handle 1.

The following are based on the FIGS. 10a to 17b some embodiments of the handle 1 with bayonet closure described, reference being made to the previous description of the figures with regard to additions to the description. It should be expressly understood at this point that the invention also includes a combination of a handle 1 and a hand tool and a handle alone, in which or in which the fastening means 10 are formed as a bayonet closure. In this case, an additional element 6 does not necessarily have to be provided. Under a bayonet closure while a closure is understood, which is designed such that initially takes place an axial relative movement between the handle and the power tool in which the extension 5 is inserted into a recess 19, whereupon the extension 5, in particular together with the Handle, relative to the power tool, preferably by 90 °, is rotated into a locking position and / or, in particular instead of a rotary movement of the entire handle 1 or the power tool by twisting an element of the handle 1, a locking of the partially inserted into the power tool handle 1 is realized.

In the embodiment according to Fig. 10 the handle 1 comprises an extension 5, which can be arranged or fixed only directionally (oriented) on the handheld power tool by two parallel lateral bevels 30, which cooperate with corresponding, not shown, opposing surfaces in the recess of the hand tool. rotationally symmetrical design of the handle portion 2 allows. At the extension 5, an element 6 is arranged end, which is rotatable about a central axis of rotation relative to the fixed extension 5. The rotation of the element 6 can be realized for example by an end-side actuator 27 (here turntable). In the in Fig. 10b shown fixing position, the element 6 engages behind a component or a projection or engages in a recess 9 within the power tool. To set the handle 1 on the power tool, first the extension 5 with the element 6 in the in Fig. 10a shown relative position axially inserted into a recess of the power tool, whereupon the element 6 is rotated relative to the extension 5, in particular by 90 °, so as to lock the handle 1 and the fastener 10.

In the Fig. 11a and 11b is another embodiment of a handle 1 with bayonet closure shown. Evident is an extension 5 of the handle 1, which is integrally formed and which has a lower portion 5a and an upper portion 5b, wherein the upper portion 5b laterally projects beyond the lower portion 5a in two opposite radial directions, so that the extension 5 only directed can be fixed by undercutting an arranged in the power tool sheet 31 by rotating the entire handle 1 by 90 °. Instead of providing a sheet 31 with a recess 19, it is conceivable to provide the recess 19, for example, exclusively directly in the housing or another component of the power tool. In the embodiment shown, two opposing, each in the circumferential direction, inclines 32 (bevels) are introduced in the sheet 31, along which the upper portion 5b of the extension 5 slides during locking of the fastening means 10, resulting in an axial displacement movement of the handle 1 in the direction of Hand tool machine results.

Out Fig. 11b It can be seen how the sheet 31 is received in corresponding grooves 52 in a component 21 with a recess 19.

How out Fig. 11b can be seen, the recess 19 is provided with an internal thread 33, wherein the outer diameter of the extension 5 only corresponds to the core diameter of the recess 19. By providing the internal thread 33 and previously known handles with a male screw in the recess 19 can be set.

In Fig. 11a is an optional element 6 is shown, which is designed as a spring-loaded pin in the axial direction. This can have at least one of two following tasks. According to a first embodiment, the pin is designed as a Ausdrückstift which ejects the handle 1 when not properly locked out of the recess 19. Additionally or alternatively, a recess for the element 6 (pin), for example, in the component 21 may be provided, in which the element 6, which is adjustable relative to the extension 5 and is part of the fastening means 10, can engage, whereby an unintentional Loosening the locking of the extension 5 is advantageously avoided. Alternatively, the element 6 can also be designed as a latching hook.

The only difference from that in the Fig. 12a and 12b shown embodiment of the in the Fig. 11a and 11b shown embodiment of a combination of a handle 1 and a power tool is that in which in the Fig. 12a and 12b the embodiment shown recess 19 is formed with the slopes 32 as part of the housing 34 of the power tool, the extension 5 is therefore lockable directly to the housing 34 of the power tool. On the provision of a separate sheet has been omitted. In the embodiment according to the Fig. 12a and 12b can be provided as tolerance compensation, a spring element, preferably a disc spring element, which is preferably arranged on the handle 1 side facing the housing 34. In Fig. 12a It can be seen that the extension 5 is provided at its lower end with a centering cone 35.

In the Fig. 13a and 13b in combination with Fig. 13c a further embodiment of a combination of handle 1 and hand tool is shown, wherein the fastening means 10 in the embodiment shown comprise a bayonet closure. For this purpose, a centric, end-side extension 5 is provided on the handle 1, wherein the upper portion 5b projects beyond the lower portion 5a in two radial directions, so that a substantially T-shaped extension in cross-section is obtained. This extension 5 is in the in the Fig. 13b and 13c shown recess 19 inserted and can engage behind the component 21 by turning 90 °. In order to prevent unintentional release, a trained as a clamping element 6 is shown. The element formed by a disk has an internal thread, which cooperates with an external thread of the handle 1, so that the element 6 can be rotated against the component 21, whereby the upper portion 5b of the extension 5 is braced against the back 36 of the component 21. Recesses 37 are provided in the rear side 36 for the upper section 5b of the extension 5, in order to produce a positive engagement acting as an anti-rotation between the component 21, which can alternatively also be formed by the housing of the handheld power tool.

In the Fig. 14a to 14c a further combination of a handle 1 and a power tool is shown, wherein the fastening means 10 again comprise a bayonet closure. The handle 1 is equipped with a projection 5, which is formed substantially cylindrical. Within the extension 5 is an axially adjustable relative to the extension adjustable, the extension 5 in two radial directions superior, designed as a bolt, element 6 is arranged. By means of the element 6, the component 21 (see. Fig. 14c ) are underrun. The element 6 thus has substantially a similar function as the upper portion 5b of the extension 5 according to the Fig. 13a and 13b , In order to avoid unintentional loosening of the fastening means 10, the element 6 after insertion of the extension 5 in the recess 19 and after rotation of the handle 1 and thus of the extension 5 by 90 ° in the axial direction of the free end of the extension. 5 , ie in the direction of handle portion 2, adjusted, whereby the element 6 against the back 36, more precisely in indentations 37, is braced (rotation). As a result of the relative displacement of the element 6 relative to the extension 5, the extension 5 moves further into the recess 19 and, as a consequence, the entire handle 1 is moved in the direction of the handheld power tool. The element 6 is mounted axially adjustable in a cutout 38 in the extension 5. As an actuating device for the axial displacement of the element 6, an end-side hub is provided, which engages by means of an internal thread in an external thread 39 of a rod 40, wherein the rod 40 is arranged centrally and extending in the axial direction within the extension 5 and the handle portion 2. The element 6 is fixed to the rod 40.

In the Figs. 15a and 15b another embodiment of a handle 1 for a hand tool is shown, wherein the fastening means 10 comprise a bayonet closure. This is formed by the extension 5 with its upper widened in the radial direction portion 5b and its lower portion 5a, wherein the extension 5 cooperates with a corresponding recess in the power tool.

Furthermore, the fastening means 10 comprise two elements 6 formed as locking elements, which, upon rotation of the handle 1, in which the upper portion 5b of the extension 5 is brought into a rear grip position, in a housing contour, not shown, of the power tool in the radial direction against the force of a respective spring be stretched to relax in the end position of the twisting each latching in a recess and against rotation. The release or unlocking of the elements 6 via unlocking 29th

In the Fig. 16a and 16b a further embodiment of a handle 1 for a hand tool is shown, wherein the fastening means 10 of the power tool and the handle 1 comprise a bayonet closure, which is formed by a projection 5 and a recess 19, not shown. Evident are two radially spaced from the extension 5 elements 6, which are designed as locking elements and which snap in the fixing position of the bayonet lock in axial recesses in the power tool, especially in the housing of the power tool. For this purpose, the rod-shaped elements 6 are spring-loaded axially in the direction of the power tool. In order to enable a release of the handle 1 of the power tool, the locking disk 41 shown must be rotated, wherein by rotating the locking disk 41, the elements 6 by means of rising, disposed within the handle 1 and connected to the locking disk 41, tracks against the force of springs be withdrawn into the handle 1.

In the Figs. 17a and 17b is another embodiment of a handle 1 for a hand tool with a bayonet closure shown. Evident is a plate-shaped extension 5 of the handle 1, which cooperates with a not shown recess 19 in the power tool. In addition to the extension 5, the fastening means 10 comprise a rotatably mounted on the handle 1 element 6, which is arranged in a recess 42 of the extension 5 and which is part of the bayonet closure. The element 6 is analogous to the extension 5 according to the Fig. 16a and 16b formed, thus has a thickened in the radial direction upper portion 6b, which projects beyond a lower portion 6a in the radial direction. The fixing of the handle 1 in the power tool takes place by inserting the extension 5 in a recess and subsequent rotation of the element 6 by 90 °, so that this engages behind a component or a projection, etc. in the hand tool with the upper portion 6b of the element 6. For rotating the element 6 relative to the extension 5, an end-side actuator 27 is provided, which is designed as a hub. Rising undercut flanks 43 of the upper portion 6b of the element 6, which can be formed directly or indirectly sprung, allow a clearance-free seat of the handle 1 in the power tool.

In the Figs. 18a and 18b Further embodiments of a handle 1 for a hand tool are shown. Evident is an extension 5 on the handle 1, wherein the extension 5 is provided with an external thread 44 which cooperates with an internal thread of a plate-shaped element 6. For receiving the extension 5, a receptacle 53 is provided with a recess 19 which, for example, as in Fig. 18d , Part of a fixed to the housing of the power tool machine insertion pocket 45 may be for the element 6, or which can be realized by or in the housing 34 of the power tool. By inserting the extension 5 into the receptacle 53, such that the plate 6 engages behind a component, in particular the receptacle 53 (insertion pocket 45) or the housing 34, the element 6 and the extension 5 are adjusted relative to one another, whereby the element 6 is clamped against the back of the receptacle 53 (insertion pocket 45) and the back of the housing 34, whereby the handle 1 is held securely. The relative movement between the extension 5 and the element 6 can be realized on the one hand by turning the handle 1 and / or by actuating an end-side actuating device 27.

It is also feasible to connect the element 6 fixed to the extension 5 or integrally with this and to realize the distortion of the element 6 in the receptacle 53 (insertion pocket 45) by means of another element (not shown), in which case this Element is part of the fastener 10 and represents the element according to the invention, which is relative to the extension 5 adjustable and involved in the manufacture and / or release and / or securing a positive and / or non-positive connection between the handle and the power tool.

In the FIGS. 19a and 19b is a further embodiment of a handle 1 for a hand tool shown, wherein also in this embodiment, an extension 5 is fixed to the mounting portion 3 of the handle 1. Contrary to all other embodiments described above, the extension 5 is formed in the embodiment shown as an angular element and forms the part of a pivot bearing 46, by means of which the handle 1 relative to the hand tool (shown in FIG Fig. 19 ) is pivotable and can be brought into position, for example, in which it extends parallel to the power tool. In addition to the extension 5 is part of the pivot bearing 46 in Fig. 19a shown recess 19 in the housing 34 of the power tool, in which the extension 5 is inserted laterally. An additional component of the fastening means 10 is formed as a latching hook element 6, which is arranged at a radial distance from the extension and which is spring-loaded in the radial direction outwards and in an in Fig. 19a shown fixing the case 34 of the power tool engages behind. By means of a release button 29, the element 6 can be adjusted from the fixing position into a release position, in which then the handle 1 by means of the pivot bearing 46 is pivotable and / or removable. The pivot bearing 46 can thus be designed according to a first alternative so that the extension 5 is releasably inserted into the recess 19 or according to a second alternative such that the handle 1 is permanently held by the pivot bearing 46 on the hand tool or attached thereto is.

In the Fig. 20a to 20d are further embodiments of a handle 1, partially in combination with a hand tool, shown. The handle 1 has an end extension 5 with external thread, wherein the external thread is screwed to an internal thread of an element 6. The extending transversely to the longitudinal extent of the extension 5 element 6, like the extension 5, received in a cross-sectionally T-shaped groove 47, which simultaneously forms the recess 19 for receiving the extension 5 and a guide slot. The T-slot 47 is formed in the embodiment shown by two housing shells 48, 49 of the housing 34 of the power tool and extends in the housing circumferential direction. The handle 1 can, as out Fig. 20d can be determined at different positions on the housing. For this purpose, it only has to be adjusted together with the element 6 along the T-slot 47 (guide slot). To set the handle 1 on the hand tool, the Handle 1 and thus the extension 5 is adjusted relative to the element 6, whereby the element 6 is clamped in the T-groove 47. Alternatively, it is conceivable to connect the element 6 fixedly to the extension 5 or to form it integrally with it, in which case a further element in the sense of the invention must be provided, which is movable relative to the extension 5 and by means of which the element 6 can be clamped in the T-groove 47. For example, such an element can be designed as a clamping wedge, which produces the pressing or picks it up again.

Like from the Fig. 20b and 20c it can be seen, the handle 1 can be provided with a slider 50, which allows a determination of the handle 1 on the hand tool only at a certain or more specific circular surface sectors.

How out Fig. 20b it can be seen, it is further feasible to arrange the handle 1 via a pivot joint 51 relative to the slider 50 pivotally, whereby handle positions at an angle to the longitudinal axis of the hand tool are possible. With a corresponding design of the pivot joint 51, folding in of the handle 1, preferably parallel to the longitudinal axis of the hand tool, can also be realized. In this principle, the inclination of the handle allows a much closer approach to possible working space-Störkonturen and thus a better and more space-saving stowage (see. Fig. 19c ) of the power tool together with the hangriff 1.

Claims (25)

Hand tool with a handle, in particular an auxiliary handle for a hand tool, with fastening means (10) for, in particular detachable, attaching the handle (1) on the power tool, wherein the fastening means (10) have an extension (5), at least in sections in a Recess (19) is receivable, wherein either the extension (5) on the handle (1) and the recess (19) in the hand tool or the extension (5) on the power tool and the recess (19) in the handle (1) wherein the fastening means (10) at least one relative to the extension (5) adjustable, in the manufacture and / or releasing and / or securing a positive and / or frictional connection between the handle (1) and the hand tool involved element ( 6), characterized in that the element (6) comprises at least one ball trapped in the extension (5) which radially relative to the extension (5) between a release position and a fixing position, preferably by means of a plug stem (24) is adjustable. Hand tool according to claim 1, characterized in that the extension (5) oriented orientation or exclusively oriented in the recess (19) insertable and / or in the recess (19) with the element (6) can be fixed. Powered hand tool according to one of claims 1 or 2, characterized in that the element (6) as a spring element (17), preferably as a substantially U-shaped round wire spring is formed, which provided in a fixing position in at least one in the extension (5) , in particular designed as a groove, recess (9) engages. Powered hand tool according to claim 3, characterized in that at least two mutually parallel, in particular as each Groove formed, recesses (9) on the extension (5) are provided, which, at least approximately, parallel to legs (7, 8) of the spring element (17) are aligned. Hand tool according to one of the preceding claims, characterized in that the extension (5) is slotted in the longitudinal direction, and that the element (6) by relative displacement to the extension (5), the radial extension of the extension (5) is arranged and changed changing , Powered hand tool according to claim 5, characterized in that the element (6) in the extension (5) arranged, adjustable in the axial direction, soul comprises. Powered hand tool according to one of claims 5 or 6, characterized in that the element (6) comprises a rotatably mounted eccentric pin. Powered hand tool according to one of the preceding claims, characterized in that the element (6) as in the axial direction relative to the extension (5) adjustable, preferably spring-loaded in a clamping direction, clamping wedge is formed. Hand tool according to one of the preceding claims, characterized in that the element (6) as, at least in sections, in the extension (5) arranged, latching hook is formed. Powered hand tool according to one of the preceding claims, characterized in that the element (6) is rotatably mounted relative to the extension (5) about an eccentric relative to the longitudinal central axis of the extension (5) extending eccentric axis. Hand tool according to one of the preceding claims, characterized in that the extension (5) is designed as at least one latching hook, which is adjustable from the axially adjustable, preferably formed as a plug stem (24), element (6) in the radial direction between a release position and a fixing position is adjustable. Hand tool according to one of the preceding claims, characterized in that the element (6) as in the radial direction outwardly spring force loaded, radially adjacent to the extension (5) arranged, latching hook is formed. Hand tool according to one of the preceding claims, characterized in that the extension (5) and / or the recess (19) and / or the element (6) are formed as part / s of a bayonet closure / is. Powered hand tool according to claim 13, characterized in that the element (6) as in the axial direction relative to the extension (5) adjustable, an inadvertent opening of the bayonet lock preventing securing element, in particular locking element is formed. Hand tool according to claim 13 or 14, characterized in that a preferably provided with at least one pitch, of the extension (5) and / or the element (6) in a fixing behind engaged, component (21) arranged by a in the housing of the power tool, in particular as a sheet metal (31) formed, separate component or by the housing itself is formed. Hand tool according to one of claims 13 to 15, characterized in that the element (6) as a clamping element, in particular as relative to the extension (5) rotatable, an unintentional opening of the bayonet closure preventing, clamping element is formed. Powered hand tool according to one of claims 13 to 16, characterized in that the element (6) as in the extension (5), the extension (5) in the radial direction superior, in the axial direction relative to the extension (5) adjustable latch is formed , Powered hand tool according to one of claims 13 to 17, characterized in that the element (6) comprises at least one locking element which is spring-loaded in the radial direction, which is automatically radially adjustable in a fixing position during the rotational closure of the bayonet closure. Powered hand tool according to one of claims 13 to 18, characterized in that the element (6) comprises at least one spring-loaded in the axial direction locking element which is axially axially adjustable in a fixing position during the rotary closing of the bayonet closure. Powered hand tool according to one of the preceding claims, characterized in that the element (6) is part of a bayonet closure and in a cutout (38) of the extension (5) and relative to the extension (5) is rotatable. Powered hand tool according to one of the preceding claims, characterized in that one, in particular of the recess (19) formed, preferably designed as a retractable pocket (45), receptacle (53) for the element (6) is provided and that the element (6) the extension (5) is fixed and the receptacle (53) engages behind, and that the element (6), preferably by relative displacement of the extension (5) to the element (6), in the receptacle (53) is clamped. Hand tool according to one of the preceding claims, characterized in that the extension (5) is part of a pivot bearing (46) and that the element (6) is designed as adjustable in the radial direction latching hook. Hand tool according to one of the preceding claims, characterized in that one, in particular of at least two housing shells formed, preferably designed as a T-groove (47), guide slot for the extension (5) attached to the element (6) is provided in the Element (6) together with the handle (1) relative to the hand tool, in particular transversely and / or in the direction of her Longitudinal extent, is adjustable, and that the element (6), in particular by relative displacement of the extension (5) to the element (6), is clamped in the guide slot. Hand tool, in particular according to one of the preceding claims, with a by means of fastening means (10) on the hand tool machine fixable handle (1), characterized in that the fastening means (10) comprise a bayonet closure. Handle, in particular additional handle, for a hand tool with the features of one of the preceding claims, wherein the handle (1) has the recess (19) or the extension (5) and / or relative to the extension (5) adjustable element (6) ,

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