EP2402123A2 - Manually operated machine tool with an energy storage device - Google Patents

Abstract

The tool (10) has a drive motor (13) arranged in a machine housing (12), which comprises a supporting section (20) that lies opposite to a hand grip section (19). An energy storage housing (51) comprises a connection arm (54) for insertion into a connecting arm holder (28), which is provided at the supporting section of the machine housing. The connection arm protrudes in front of an energy storage housing-base (53). A storage element (52) i.e. lithium-ion cell, and/or an electrical circuit (83) i.e. monitoring circuit, is arranged in the connection arm of the storage housing.

Description

The invention relates to a hand-held machine tool, in particular a screwdriver and / or drill, with a drive housing arranged in a motor housing and a drivable by the drive motor tool holder for receiving a particular designed as a drilling or screwing tool, wherein the machine housing by a grip around an operator provided handle portion and the handle portion opposite protective portion, between which a penetration opening is formed, and with an energy storage for electrical power supply of the drive motor, wherein an energy storage housing of the energy storage on the machine housing by means of fastening means is detachably fastened and energy storage terminals of the energy storage for electrical connection of the energy storage are provided with provided on the machine housing machine connection contacts. The invention further relates to an energy store for such a hand-held machine tool.

Such a hand-held machine tool in the form of a screwdriver is, for example, in DE 10 2009 024 112 shown. The energy storage or battery pack is mounted in the manner of a shoe on the underside of the machine housing. In order to use such a wireless hand-held power tool, the energy storage must be mounted at the bottom of the machine housing be, which increases the height. If a higher storage capacity is required, the height of the energy storage housing is correspondingly higher.

It is therefore an object of the present invention to provide a hand-held power tool and a matching energy store with the most compact design possible, preferably with improved hold compared to known combinations of hand machine tool and energy storage.

To solve the problem is provided in a hand-held power tool of the type mentioned that the energy storage housing has a front of an energy storage housing base projecting, the protective portion plug-in for insertion into a provided on the protective portion of the machine housing plug arm, wherein in the plug of the energy storage housing at least one memory element, in particular a battery storage cell, and / or an electrical circuit is arranged. To solve the problem, an energy storage device according to the invention is also provided.

A basic idea of the invention is that the protective section receives at least parts of the energy store, ie that the plug-in arm with one or more storage elements, for example lithium-ion storage cells or other battery storage cells, is arranged in the plug-in arm. As a result, the area of the energy storage housing base can be made more compact, ie it would not be necessary to accommodate the storage elements that are already placed in the insertion arm. Furthermore, in the plug-in also an electrical circuit, for. As a monitoring circuit and / or a charging control, be arranged.

The invention also contributes to an improved hold of the energy accumulator on the machine housing, since an additional fixing of the energy accumulator on the machine housing is provided by the plug-in arm inserted in the plug-in arm receptacle.

It is possible in principle that the energy storage is also a two-armed energy storage, so that, for example, a second plug-in arm is arranged in the handle portion. The energy storage housing preferably has a U-shaped or V-shaped configuration in side view. This second plug-in arm may e.g. a monitoring circuit for the memory elements and / or contain at least one memory elements. The second plug-in arm may, for example, be shorter than the first plug-in arm to be inserted into the protective section. In this case, or even when omitting the second plug-in arm, a larger receiving space for further components is present in the handle portion, for example for a control of the hand-held machine tool. Namely, it is usually advantageous if, in the area of the handle portion, where actuators, e.g. a main switch for switching on and off and for adjusting the speed of the hand-held power tool are arranged to accommodate the control components. This space is therefore available in full or at least to a greater extent, if in the handle section no components of the energy storage or only a few components are housed.

Preferably, the insertion arm is approximately the same length as the base of the energy storage housing.

The handle is, for example pistol grip-like from a motor motor receiving the engine section of the engine housing. The protective section expediently runs in Substantially parallel to the handle portion or slightly oblique.

The energy storage case base is mounted on the machine housing mounted state, for example, on a connecting portion of the machine housing, which connects the handle portion and the protective portion with each other. It is also possible for the energy storage case base to connect the handle portion and the protection portion. In connection with the above-mentioned motor section, an overall annular shape of the overall housing is achieved in both cases, which comprises the machine housing and the energy storage housing. The operator or his hand is thus optimally protected. The hand machine tool fits comfortably in your hand.

The fastening means expediently comprise at least one catch movable between a release position and a detent position, for example arranged on the energy storage housing or also on the machine housing. The catch is suitably spring-loaded in the detent position. For example, this may be a locking lug, a latching hook or the like other locking means. One of the catch assigned detent contour is expediently hook-shaped.

Preferably, the at least one catch can be actuated by an actuating element which forms a supporting projection or, for example, is also a component of a supporting projection. The support projection is arranged on a provided for parking the hand-machine tool bottom side of the energy storage housing. For example, the support projection projects in front of a base bottom surface of the energy storage housing. As a result, the footprint of the energy storage housing increases, so that the hand-held machine tool is safe. For example, the support projection is forward in the direction of the tool holder, when the energy storage is mounted on the machine housing. The hand machine tool is also safe when it is top-heavy, so to speak.

Preferably, the energy storage housing forms a cover for closing the machine housing, for example from a bottom.

The fastening means expediently comprise several, for example two notches, which can be actuated simultaneously by a single actuating element. The operation is linear, for example. The operation is simple because not several actuators must be operated, for example, twisted or linearly adjusted.

The fastening means are expediently spaced from each other and comprise a first catch for latching with a first latching contour and a second latch for latching with a second latching contour (there may also be other notches that interact with corresponding latching contours). The aforementioned two notches are expediently arranged on the one hand in the region of the handle portion, on the other hand in the region of the protective portion.

It is advantageous if the first detent and the associated detent contour and the second detent and their associated detent contour are arranged on mutually distant longitudinal end regions of the energy storage housing or on mating areas of the machine housing.

The machine connection contacts are expediently arranged in the region of the handle portion of the machine housing, the energy storage connection contacts expediently at a portion of the energy storage housing base, the Handgrip section opposite, when the energy storage is mounted on the machine housing. The connection contacts are thus expediently where a control of the hand-held machine tool is arranged. The necessary electrical cables are short.

The energy storage connection contacts and the plug-in arm are advantageously arranged on mutually opposite longitudinal end regions of the energy storage housing.

A contact housing of the energy storage connection contacts and / or the machine connection contacts forms expediently a part of the fastening means, that is configured for example as a plug-in receptacle, as a plug-in projection or as an abutment. Thus, therefore, the electrical contacts beyond their electrical connection function also fulfill a holding function or attachment function.

It should be noted at this point that the connection contacts or their contact housing expediently extend parallel to the plug-in arm of the energy store, for example projecting obliquely or at right angles from the energy storage housing base. The contact housing may be configured, for example, as a plug-in receptacle or plug-in projection. Thus, for example, the plug-in arm with the at least one memory element and the contact housing can each form plug-in projections. The assembly is easy.

In addition to the plug-in arm and the Steckarmaufnahme (or the contact housing) and other plug-in means may be present, for example, a plug-in receptacle and a plug-in projection on the machine housing and energy storage housing (or vice versa). The aforementioned locking means - it could also be provided screws, bolts or other fasteners - then serve the fuse plug, ie that the energy storage relative to the machine housing is no longer linearly displaceable, but linearly secured.

The plug-in receptacle is expediently limited, at least in sections, by a circumferential wall of the energy storage housing or of the machine housing. The plug-in projection, which is formed for example by the upper side of the energy storage housing or the underside of the machine housing, is offset inwards relative to the respective peripheral wall of the housing. Thus, therefore, the peripheral wall of the respective other component overlaps the insertion projection. Preferably, the arrangement is made such that the peripheral walls of the energy storage housing and the machine housing, when the energy storage is attached to the machine housing, are substantially identical contour, so that forms a visually appealing overall contour.

The protective portion has expediently a tubular shape. Thus, it is therefore advantageous if the plug-in arm of the energy store is completely accommodated in the machine housing, so that it is optimally protected against environmental influences and damage.

Preferably, the plug-in arm receptacle is designed for the positive reception of the plug-in arm. This means that the plug-in arm has an optimal hold in the plug arm receptacle.

Furthermore, it is advantageous if the plug-in arm and the plug-in arm guide means which are present, which facilitate insertion or lead the plug when inserting into the Steckarmaufnahme. For example, a guide projection for engagement in a guide receptacle on the respective other component is provided.

The plug-in arm and the energy storage housing base expediently form right-angled or obtuse-angled limbs (in side view) of the energy storage housing.

The machine housing and / or the energy storage housing are expediently provided for securing or fixing at least one hook, which is detachably mounted on a trained by the machine housing and the energy storage housing housing the hand-held machine tool, for example, attachable. For example, if the energy store is removed from the machine housing, the hook may be plugged into the machine housing (or energy storage housing). However, if the two housing components (machine housing and energy storage housing) are connected to each other again, the hook is held captive on the overall housing. For example, the one housing component secures the hook against being pulled out of a socket which is arranged on the other housing component.

The energy storage or the storage elements are expediently rechargeable battery cells or battery cells, such as lithium-ion cells, although other electrical energy storage, such as fuel cells, are conceivable.

Although the invention is illustrated in the following embodiment with reference to a screwdriver and drill. However, it can of course also be used in connection with other mobile hand-held machine tools, for example in jigsaws, saber saws, routers and the like other devices.

Fig. 1

eine perspektivische Explosionsdarstellung der erfindungsgemäßen Hand-Werkzeugmaschine, die in

Fig. 2

von schräg vorn und in

Fig. 3

von frontal vorn und in

Fig. 4

seitlich mit teilweise aufgeschnittenem Maschinengehäuse dargestellt ist und

Fig. 5

eine perspektivische Schrägansicht von vorn eines Energiespeichers der Hand-Werkzeugmaschine gemäß der vorigen Figuren.

The invention will be explained with reference to an embodiment. Show it:

Fig. 1

an exploded perspective view of the hand-tool machine according to the invention, which in

Fig. 2

from diagonally forward and in

Fig. 3

from the front and in front

Fig. 4

is shown laterally with partially cut machine housing and

Fig. 5

a perspective oblique view from the front of an energy storage of the hand-held machine tool according to the previous figures.

A handheld power tool 10 is a cordless, handheld power tool. In the concrete embodiment, the hand-held power tool is a combined screwdriver and drill, i. it can be screwed and drilled with it. For the electrical power supply of the hand-held power tool 10 is an energy storage 50, for example, a battery pack that allows wireless, free operation of the hand-held power tool 10.

The hand-held power tool 10 is quasi two-part, i. It consists of a "basic machine" and a second component which can be arranged on the basic machine, namely the energy store 50.

The basic machine comprises a machine housing 12, in which a drive motor 13, in the embodiment, an electric drive motor, housed. The drive motor 13 drives The drive motor 13 is controlled by a controller 16, which via a present in a known manner configured pressure switch 17 switching commands, such as a speed specification and on and Off commands, receives.

The drive motor 13 is accommodated in a motor section 18 of the machine housing 12, from which a handle section 19 and a protective section 20 protrude. The handle portion 19 and the protective portion 20, in turn, are interconnected by a connecting portion 21 on a side opposite to the motor portion 18 side. The connecting portion 21 forms, so to speak, the base or a lower side 22 of the machine housing 12. The motor portion 18 and the handle portion 19 are angled relative to each other, so that a total of a gun-like arrangement is made. The protective portion 20 extends at a distance from the handle portion 19, preferably approximately parallel. Between the handle portion 19 and the protective portion 20 a passage opening 23 is provided. Thus, an operator can grasp the handle portion 19 with one hand, wherein he passes through the passage opening 23. To the front 15 of the protective portion 20 forms a protection for the hand of the operator. The switch 17 is disposed on the handle portion 19 and can be conveniently operated by the hand grip portion 19 embracing hand.

The tool holder 14 is in this case suitable for direct insertion of a screwdriver bit. In any case, it has at its front a polygonal receptacle 24. On the tool holder 14 but also other attachments can be attached, such as a drill chuck 25th

At the bottom 22 of the machine housing 12, a mounting portion 26 is provided for the energy storage 50. The machine housing 12 is open on its underside 22, i. the energy store 50 can form a cover for the machine housing 12, as it were. In any case, components described below in detail engage in an interior space 27 of the machine housing 12 at least partially, which is advantageous in many respects, as will become clear below.

In an energy storage housing 51 of the energy storage 50, a plurality of storage elements 52 are housed protected from environmental influences, such as battery cells. The energy storage housing 51 comprises an energy storage housing base 53, from which an insertion arm 54 protrudes. On the machine housing 12, a plug-in arm receptacle 28 is provided, into which the plug-in arm 54 can engage when the energy store 50 is mounted on the machine housing 12. It is advantageously provided that the plug-in arm receptacle 28 is provided in the protective section 20, so that it is used in an optimal manner. The energy storage 50, i. its energy storage housing 51, are designed so that the energy storage 50 fits the machine housing 12, i. that the plug-in arm 54 is provided on the side of the energy storage housing 51, which is opposite to the handle portion 19.

The plug-in arm 54 has a tubular shape and has a circumferential wall 55 and an end wall 56 on its free side. The peripheral wall 55 and the end wall 56 are suitably designed so that they optimally uses the space that the Steckarmaufnahme 28 offers. For example, the plug-in arm 54 as in the embodiment have a substantially square, rounded corner regions having peripheral contour, with other, for example, flatter and / or round geometries are readily conceivable.

The plug-in arm 54 projects from an upper side 57 of the energy storage housing 51. The inclination of the plug-in arm 54 is expediently oriented on a skewed course of the protective section 20 relative to the connecting section 21, so that, for example, an angle 69 between on the one hand a top wall 58 of the energy storage housing 51 and on the other hand the plug-in arm 54 is greater than 90 degrees, thus obtuse.

For example, two of the memory elements 52 are located in the plug-in arm 54. The other memory elements 52 are accommodated in the base 53. The base 53 comprises, in addition to the top wall 58, a bottom wall 59 and sidewalls 60 extending between these walls, a back wall 61 and a front wall 62. The walls 60-62 form a peripheral wall as a whole.

Further, in the plug-in arm 54, an electrical circuit 83, e.g. a monitoring circuit and / or a charging control for the memory elements 52 may be arranged.

The storage elements 52 are completely encapsulated by the energy storage housing 51. The aforementioned walls or wall sections are provided, for example, by two mutually complementary housing parts 63a, 63b, which in one piece and integrally form in each case a partial area or a side part of the plug-in arm 54 and the base 53. The housing parts 63a, 63b are, for example screwed together and / or locked and / or glued.

In the area of the handle section 19, machine connection contacts 29 are provided for the electrical connection of the energy store 50. The machine connection contacts 29 are advantageously plug contacts, as well as interacting with these, existing on the energy storage 50 energy storage connection contacts 64. The energy storage connection contacts 64 and the plug-in arm 54 are arranged on mutually opposite longitudinal ends, namely close to the rear wall 61 and the front wall 63, of the energy storage housing 51. Thus, therefore, the terminal contacts 64 as well as the plug arm 54 perform a fastening function, so are components of fasteners 11, with which the energy storage 50 on the machine housing 12, thus the basic unit of the hand-held machine tool 10, can be fastened.

The assembly and disassembly is very simple and comfortable of equip, since the fasteners 11 are easy to handle overall, but still, even with the beneficial participation of the plug arm 54 and the Steckarmaufnahme 28, a secure hold of the energy storage 50 on the machine housing 12 allow.

The energy storage housing 51 is received positively on the machine housing 12. Thus, loads of locking means are low, which expediently include a first catch 65 and a second catch 66, which cooperate with latching contours 30 and 31.

For example, the plug-in arm 54 engages positively in the plug-in arm receptacle 28. In front of a peripheral wall 32 of the protective portion 20, which is a total tube-like support projections 33 are inwardly from where the peripheral wall 55 of the plug-in arm 54 can be supported.

At this point it should be noted, however, that it is well within the scope of the invention, when a plug and a Steckarmaufnahme match with each other, ie a positive connection between the plug and Steckarmaufnahme is advantageous, but not essential.

The insertion of the plug-in arm 54 in the plug-in arm receptacle 28 is facilitated by a plug-in guide or linear guide. This includes e.g. one or two guide seats 67 on the peripheral wall 55 of the plug arm 54 and in the guide receptacle (s) 67 engaging guide projections 34 on the Steckarmaufnahme 28. The guide receptacles 67 are configured for example as longitudinal grooves which extend in the longitudinal direction of the insertion arm 54. It is understood that unlike the embodiment, one or more than two guide seats 67 may be provided.

In addition to the plug-in arm 54, other form-fitting connections between the energy store 50 and the machine housing 12 are provided, for example, by a contact housing 68 of the energy storage connection contacts 64. The contact housing 68 has an oblique inclination corresponding to the plug-in arm 54, ie at the same angle 69 to the top wall 58 or top 57 inclined as the plug 54.

Thus, therefore, the energy storage housing 51 is infected along an inclined to the bottom wall 59 and bottom 22 axis 70 to the machine housing 12, wherein the plug arm 54 engages in the Steckarmaufnahme 28 and at the same time the contact housing 68 in a form-fitting receiving contact housing receptacle 35th Das Energiespeichergehäuse 51 is already received by these measures transverse to the axis 70 positively in the machine housing 12.

Furthermore, the upper side 57 of the energy storage housing 51 is configured as a plug-in projection 71, in particular the upper wall 58 is designed as a plug-in projection 71, which fits into a plug-in receptacle 36 of the machine housing 12. For example, between the top wall 58 and the side wall 60, and expediently also the rear wall 61 of the base 53, a groove 72 or a recess formed, in which a free end portion of a peripheral wall 37 of the machine housing 12, for example, the connecting portion 21, fits. Thus engages so to speak the plug-in projection 71 in an interior 27 of the machine housing 12 and is located after the plug-in mounting within the peripheral wall 37th

Appropriately, the geometries are such that the peripheral wall 37 and the side walls 60 and the rear wall 61 are aligned when the energy storage 50 is fixed to the machine housing 12, so that there is a continuous, almost seamless outer contour of a (total) housing 38 , The housing 38 is formed entirely by the machine housing 12 and the energy storage housing 51.

The first catch 65 is arranged in a transition region of the plug arm 54 to the base 53, in this case on the front, free side of the energy storage housing 51. Thus, the first catch 65 is above the front wall 62. The second catch 66 is provided close to the contact housing 68 , So at a significant distance from the first catch 65, so that at widely spaced locations latching of the energy storage device 50 with the machine housing 12 is possible.

It is preferably provided that the detent 66 is arranged in a detent housing 73, which can also contribute to the positive-locking retention of the energy storage housing 51 on the machine housing 12. For example, a rear wall of the catch housing 73 is inclined at an angle 69.

The detents 65, 66 are actuated by a common actuator 74 simultaneously. An operator therefore only has to act on the actuating element 74 in order to bring the notches 65, 66 out of engagement with the latching contours 30, 31. It should also be noted that the locking contour 30 in the vicinity of Protective portion 20 is formed by a from the peripheral wall of the machine housing 12 inwardly projecting portion 39. The latching contour 31 is disposed on a cross connector 40 which extends between opposed portions of the peripheral wall 37.

In any case, the detents 65, 66 are mechanically connected to each other by a schematically illustrated coupling device 76, which is actuated by the actuating element 74. The detents 65, 66 are spring loaded in their detent position, for example by a schematically illustrated, acting on the coupling device 76 spring 77th

The actuator 74 contributes to a secure footing of the hand machine tool 10 when it is parked on a ground. The actuator 74 forms part of a support projection 78 which projects forwardly in front of the front wall 62. The support projection 78 comprises projecting walls 79 in front of the wall 62, between which the actuating element 74 is arranged. Its front wall 80 is used for printing operation and is relatively large, so that it can be easily pressed by an operator. The lower wall 81 of the actuating element 74, however, increases the support surface, which is already provided by the bottom wall 59 of the energy storage housing base 53 in itself. In particular, if a heavy tool or heavy attachment is arranged on the tool holder 14, the hand-held machine tool 10 is thus top-heavy, the support projection 78 acts to tilt the hand-held machine tool 10 forward, i. towards the front 15 towards, contrary.

The detents 65, 66 are formed in the manner of latching hooks or latching noses. The detents 65, 66 thus engage with the latching contours 30, 31, so that the energy storage housing 51 is secured against being pulled out of the machine housing 12 in the direction of the axis 70. The latching contours 30, 31 are advantageously also hook-shaped.

At an upper, the tool holder 14 facing portion of the protective portion 20 is still a lighting 41 is provided which emits light in the direction of the tool holder 14. Further, a tool holder 42 is advantageously provided on the housing 38, in the embodiment on the front side 15 of the machine housing 12. In the tool holder 42, for example, screwdriver bits can be stored when not in use.

The hand-held power tool 10 with the energy storage 50 is not only extremely compact, but can also be easily carried. For this purpose, a hook 100 is provided, which is releasably attachable to the housing 38. The hook 100 has a hook arm 101 and a holding leg 102, which, although in principle could be connected directly to one another, but in the present case via an intermediate section 103.

The hook arm 101 is spaced at a distance 104 to the housing wall 43, while the holding leg 102 is supported on the inside of the housing wall 43 at the same.

The hook 100 is advantageously designed as a kind of clasp or clasp-like.

The hook 100 has a U-shaped side view. Conveniently, the hook arm 101 and the retaining leg 102 are substantially the same length, so that the lever ratios are optimal. In any case, the hand-held power tool 10 can be hooked by means of the hook 100 on a counter-stop, for example, the clothing of the operator, for example, to carry the hand-held machine tool 10 comfortably or in particular to be able to hang it up, so to speak, without requiring the operator to place the machine on a surface.

The hook 100 can be arranged on opposite sides of the hand-held power tool or its housing 38, so that, for example, a convenient use for a left-hander or for a right-handed person is readily feasible. For this purpose, holding receptacles 105 are preferably provided in the region of the housing wall 43 as plug receptacles, of which the hook 100 is held with its holding leg 102 selectively. The hook 100 can be inserted with its holding leg 102 into the holding receptacles 105.

Preferably, the hook 100 is arranged in the region of the protective portion 20, so that it does not disturb the operator when grasping the hand-held machine tool on the handle portion 19.

The retaining seats 105 are expediently made such that at least the hook arm 101, advantageously also the retaining leg 102, run approximately parallel to a central axis of the protective section 20, which in the present case also corresponds to the axis 70. Thus, the housing wall 43 thus expediently forms an abutment cooperating with the holding leg 102 or hook arm 101 on the respective entire length of the holding leg 102 and the hook arm 101.

The holding leg 102 is expediently supported directly on the housing wall 43, i. on the inside, off.

The holding receptacles 105 expediently have guides 106, which are designed, for example, in the manner of guide grooves. The retaining leg 102 is located on the bottom surface of the guide 106 substantially flat, so that it can be supported on the inside of the housing wall 43 over its entire length.

Appropriately, it is provided that the holding receptacle 105 receives the hook 100, in particular its holding leg 102, substantially form-fitting manner. The holding leg 102 is expediently held in the guide 106 by one or more hold-downs, for example, opposite the bottom 107 of the guide 106, e.g. Cross connector 108, held. A distance between the hold-down or cross-connector 108 and the bottom 107 expediently corresponds approximately to a thickness of the retaining leg 102 so that it can be inserted in a form-fitting manner into the space between the transverse connector 108 and the bottom 107.

It should be noted at this point that the term "holding receptacle" should not imply that the invention according to the invention on the housing of a hand-held power tool 10 to be mounted hook 100 must be kept free of play on the housing, but may well have a certain play, resulting in some applications Also, for example, can facilitate the opening of the respective hook 100.

The hook 100 can be latched to the housing 38 by means of a latching arrangement 109. The latching arrangement 109 comprises latching projections 110, which are spring-loaded in their latching position and engage in latching receptacles 111 on the hook 100, specifically on the holding leg 102.

The latching projections 110 are expediently dome-like. A diameter of a respective latching projection is suitably dimensioned according to the invention so that a latching projection engages with its outer circumference in a form-fitting manner into the associated latching receptacle.

The latching receptacle 111 is designed as a through hole on the retaining leg 102, so that the associated latching projection 110 can penetrate the latching receptacle 111. The respective latching projection 110 can then engage in a latching recess 111 opposite the latching recess 48, which is provided on the inside of the housing wall 43. The respective latching projection 110 thus forms a kind of latch, which correspond to the latching receptacle 111, which thus corresponds to a latching recess.

The two holding receptacles 105 respectively associated latching projections 110 are fixed relative to the machine housing 12. The latching projections 110 are arranged on an insert 44, which is located in the interior 27 of the machine housing 12. The insert 44 comprises a wall 45, which rests substantially in a form-fitting manner on the peripheral wall of the protective section 20 on the inside. It is understood that instead of an insert, which forms the recesses, a one-piece construction is possible, i. that, for example, resilient latching projections in the casting process to the respective machine housing are directly injectable. Furthermore, the kinematic reversal is possible, i. that, for example, 100 latching projections 110 are arranged on the hook, which engage in corresponding recesses on the housing 100 receiving the hook 100 (machine housing or, for example, energy storage housing) latching.

In the embodiment, however, the latching projections 110 are arranged on the housing wall 43 facing side of the spring legs 46, wherein they are opposite to the latching recess 48. The insert 44 is, for example, snapped into the machine housing 12, glued or the like. Conveniently, 44 clamping legs 47 are provided for optimum support of the insert, which are supported on the housing wall 43 or at another point of the machine housing 12, so that the insert 44 is received in the press fit in the machine housing 12. At this Place is still nachzutragen that the wall 45 on its inside, that is on the plug arm receiving 28 side facing, advantageously a guide function and / or a support function for the plug arm 54 of the energy storage 50 fulfilled.

Due to the positive locking of the hook 100 in the respective holding receptacle 105 and, in addition, the latching arrangement 109, an optimal hold of the hook 100 on the housing 38 is already possible. In addition, the position of the hook 100 can be easily changed by being pulled out of the one holding receptacle 105 and plugged into the other holding receptacle 105, so that it can, for example, the in Fig. 3 dashed line occupies position.

Also, in use, the hook 100 is very comfortable because of the hook arm 101 an insertion bevel 112 projects obliquely outward or the free end of the hook arm 101 is designed as an insertion, such that the respective counter-stop in the distance 104 between the hook 101 and the housing 38 is guided into it. Thus, therefore, the insertion bevel 112 inclined obliquely away in the sense of opening of the housing wall 43.

The energy storage housing 51 forms a securing device 113 for securing, in the present case even for fixing, the hook 100 in the holding receptacle 105. If the energy storage housing 51 is fastened to the machine housing 12, the hook 100 can not be removed from the overall housing 38 thus formed.

On the machine housing 12, on the insertion side of the respective holding receptacle 105, a passage opening 114 for the hook 100 is provided in each case. When the hook 100 is mounted on the housing 38, it penetrates the passage opening 114 with its intermediate portion 103. Directly below the holding receptacle 105 is - when the energy storage housing 51 is fixed to the machine housing 12 - a support portion 82 of the energy storage housing 51, which thus forms an abutment for the hook 100. The hook 100 is supported with its intermediate portion 103 on the support portion 82, wherein the support portion 82 extends transversely to the axis of the hook 100 on the respective holding receptacle 105. Thus, therefore, the hook 100 can not be pulled out of the holding receptacle 105 when the energy storage device 50 is mounted on the machine housing 12. The support portion 82 supports the hook 100 positively, the arrangement is suitably made so that the hook 100 is held with very little play in the holding receptacle 105.

An additional safety measure may provide that the plug-in arm 54 of the energy store 50 loads the latching projections 110 in the direction of their latching position, for example, that the spring legs 46 abut or abut the peripheral wall 55 of the plug-in arm 54, so that the latching arrangement 109 can not come out of its latching engagement, when the energy storage 50 is fixed to the machine housing 12.

In a modification of the realized embodiment, it is also possible that an inventive hook 100 or a hook 100 b, for example, on the energy storage housing 51 can be fastened, ie that this has a holding receptacle, for example, a schematically in Fig. 3 drawn holding receptacle 105b, in which the hook 100b engages with a retaining leg 102b. For example, the hook 100b has an S-shape in side view. Even with the hook 100b, it is expediently such that it can only be removed from the front of the housing 38 when the energy storage housing 51 is removed from the machine housing 12.

Claims (15)

Hand machine tool, in particular screwdriver and / or drilling machine, with a drive motor (13) arranged in a machine housing (12) and a tool holder (14) which can be driven by the drive motor (13) for receiving a tool designed in particular as a drilling or screwing tool, wherein the machine housing (12) provided for grasping by an operator handle portion (19) and the handle portion (19) opposite the protective portion (20), between which a penetration opening (23) is formed, and with an energy store (50) for electrical Power supply of the drive motor (13), wherein an energy storage housing (51) of the energy store (50) on the machine housing (12) by means of fastening means (11) is detachably fastened and energy storage connection contacts (64) of the energy store (50) for electrical connection of the energy store (50) with provided on the machine housing (12) machine connection contacts (29) are present, characterized in that the energy storage housing (51) in front of an energy storage housing base (53) projecting, the protective portion (20) associated plug-in arm (54) for insertion into a on the protective portion (20) of the machine housing ( 12) provided Steckarmaufnahme (28), wherein in the plug arm (54) of the energy storage housing (51) at least one memory element (52), in particular a battery storage cell, and / or an electrical circuit (83) is arranged. Hand machine tool according to claim 1, characterized in that the energy storage housing base (53) in the state mounted on the machine housing (12) connects the handle portion (19) and the protective portion (20) or at one of the handle portion (19) and the protective portion (20) connecting connecting portion (21) of the machine housing (12) is arranged. Hand machine tool according to claim 1 or 2, characterized in that the fastening means (11) comprise at least one movable between a release position and a detent position, in particular on the energy storage housing (51) arranged catch (65, 66). Hand machine tool according to claim 3, characterized in that the at least one detent (65, 66) is actuable by an actuating element (74) forming a support projection (78) or a component of a support projection (78) forming a hand-off Tool machine (10) provided bottom side of the energy storage housing (51) is arranged. Hand machine tool according to claim 3 or 4, characterized in that the fastening means (11) a plurality, in particular two, notches (65, 66) which are actuated by a single actuating element (74) simultaneously. Hand machine tool according to one of claims 3 to 5, characterized in that the fastening means (11) in the region of the handle portion (19) has a first catch (65) for latching with a first latching contour (30) and in the region of the protective portion (20). a second detent (66) for latching with a second detent contour (31), wherein the detents (65, 66) on the energy storage housing (51) and the latching contours (30, 31) are arranged on the machine housing (12) or vice versa. Hand machine tool according to one of the preceding claims, characterized in that the energy storage connection contacts (64) and the plug arm (54) are arranged on opposite longitudinal end of the energy storage housing (51) and / or that the machine connection contacts (29) in the area of the handle section (19) of the machine housing (12) are arranged and the energy storage connection contacts (64) at a portion of the energy storage housing base (53) are arranged in the mounted on the machine housing (12) state of the energy storage housing (51) the handle portion ( 19) is opposite. Hand machine tool according to one of the preceding claims, characterized in that a contact housing (68) of the energy storage connection contacts (64) and / or the machine connection contacts (29) forms a part of the fastening means (11) and as a plug receptacle (54) or Plug projection or abutment is designed. Hand machine tool according to one of the preceding claims, characterized in that the energy storage housing (51) has a second plug arm for insertion into a on the handle portion (19) of the machine housing (12) provided second Steckarmaufnahme, wherein in the second plug arm of the energy storage housing (51 ) at least one memory element (52), in particular a battery storage cell, is arranged. Hand machine tool according to one of the preceding claims, characterized in that in addition to the plug arm (54) and the Steckarmaufnahme (28) on the machine housing (12) and the energy storage housing (51) at least one plug-in receptacle (36) and at least one to the plug receptacle (105) matching plug projection (71) are provided which engage in the machine housing (12) mounted state of the energy storage housing (51) into one another. Hand machine tool according to one of the preceding claims, characterized in that the plug-in receptacle (36) at least partially by a peripheral wall (37) of the energy storage housing (51) or the machine housing (12) is limited, and that the plug projection (71) against a peripheral wall (60, 61) of the energy storage housing (51) or the machine housing (12) is offset inwards. Hand machine tool according to one of the preceding claims, characterized in that the protective portion (20) has a tubular shape and / or the plug arm receptacle (28) for positive reception of the plug arm (54) is configured and / or on the plug arm receptacle (28) and the plug arm (54) for guiding the plug arm (54) when inserted into the Steckarmaufnahme (28) at least one guide projection (34) for engagement in a guide receptacle (67) is arranged on the respective other component. Hand machine tool according to one of the preceding claims, characterized in that the insertion arm (54) and the energy storage housing base (53) form perpendicular or obtuse angle aligned legs. Hand machine tool according to one of the preceding claims, characterized in that the machine housing (12) and / or the energy storage housing (51) for securing or fixing at least one hook (100) are provided, at one of the machine housing (12) and the Energy storage housing (51) housing formed (38) of Hand machine tool (10) releasably mountable, in particular attachable, is. Energy storage (50) for the electrical power supply of a drive motor (13) of a hand-held power tool (10), in particular a screw and / or drill, the one by the drive motor (13) drivable tool holder (14) for receiving a particular as drilling or A tool housing (12) receiving the drive motor (13) has a handle section (19) provided for gripping by an operator and a protective section (20) opposite the handle section (19), between which a passage opening (23) is provided. is formed, wherein an energy storage housing (51) of the energy store (50) on the machine housing (12) by means of fastening means (11) is detachably fastened and energy storage connection contacts (64) of the energy store (50) for electrical connection of the energy store (50) provided on the machine housing (12) machine connection contacts (29) available s Ind, characterized in that the energy storage housing (51) in front of an energy storage housing base (53) projecting, the protective portion (20) associated plug-in arm (54) for insertion into a on the protective portion (20) of the machine housing (12) provided Steckarmaufnahme ( 28), wherein in the plug arm (54) of the energy storage housing (51) at least one storage element (52), in particular a battery storage cell, and / or an electrical circuit (83) is arranged.

Images