CN1205665A - Hand-held electric tool - Google Patents

Abstract

The invention relates to an electric hand-held power tool (10,100) having a housing (11,111) in which a motor (16) and a drive shaft (50) are arranged, and having an eccentric journal (51,52) which moves in a circular manner, and having a tool (88,188,288) which is connected to the eccentric journal (51,52) and which can be moved back and forth and has a clamping end (77) which is held in the housing (11,111) and has a recess (90,91,93), wherein a movement-transmitting catch (68,69) is arranged between the tool (88,188) and the eccentric journal (51,52), the catch (68,69) having a bore (72, 72') in which the eccentric journal (52) is rotatably inserted. The production is simplified and the costs are reduced by the catch (68,69) being detachably inserted by means of a projection (70,71), in particular a journal, into a recess (90,91,93) of the clamping end (77) of the insertion tool (88,188,288,388,488, 588).

Description

Handheld Power Tools

The invention relates to a hand-held electric power tool according to the preamble of claim 1 .

Document DE-OS 4235278 has disclosed a kind of hand-held power tool of this type, and its file-shaped cartridge tool is driven back and forth through a catch by an eccentric shaft. The rod-shaped clamping mechanism is detachably inserted into the mutually aligned holes of the insert tool and the pawl. The clamping mechanism can be moved from the outside to the clamping and releasing position with the operating part, but they must also follow the pawl and the Movement of the cartridge tool. The production costs of the clamping mechanism for coupling the insert tool to the pawl are therefore relatively high.

The hand-held electric power tool of the present invention having the features of the characterizing part of claim 1 has the advantage that the clamping mechanism consists of only a few low-cost individual parts, and when these parts are used, it is easy to use several A simple handle can be operatively connected to the detent, which can also be quickly removed or replaced.

The ease of handling reduces the risk of the operator being cut by the cutting edge of the plunger tool. This simple tool change also contributes to improved work safety.

The catch itself is detachably inserted into a groove in the clamping end of the insert tool by means of a protrusion, thus providing a particularly simple and easy-to-operate clamping system for clamping insert tools. Scraping tools or similar tools of tool construction.

Further advantages of the invention are obtained by the features stated in the dependent claims, e.g. by having the pawl elastically supported axially displaceable with respect to the eccentric journal, which can be moved manually from the outside of the housing by a simple push button operation. The catch moves to the released position. As a result, the plug-in tool can be separated from the drive by simple components, so that it can be easily removed or replaced.

The catch can be moved out of engagement with the insert tool, whereby the insert tool is detached from the drive mechanism and can be easily removed, enabling operation with a simple component, namely a pressure button, with which the Move the detent. This part is particularly simple and comfortable due to the feature that the pressure button is supported on the detent and can be moved in the same direction as the detent into the release position. In addition, the pressure button has a hook and a radial rib, the pressure button uses the hook to prevent it from falling off inside the housing in the direction of operation, and uses the radial rib to make it axially supported on the push rod, so that it can be very Thin hollow bodies are easily produced from several spring elements joined together.

The pressure button is snap-fastened by the positioning element relative to the housing in the release position of the insert tool and the positioning element can be released again when the tool is inserted, so that the pressure button does not have to remain depressed when the tool is inserted. The operator can thus hold the hand-held power tool with one hand and use the other hand to remove the tool. This significantly facilitates the replacement of the cartridge tool. At this time, the release function of the pressure button can also be easily realized, that is, by arranging positioning parts of the clasp structure on it, and these positioning parts buckle an edge inside the housing when the pressure button reaches the release position.

By providing spring elements substantially aligned with the drive shaft between the pawl and the housing, these spring members are supported on the pawl and the pressure button, so that when the pressure button is released or when the tool is clamped, it can be reliably Return the pressure button to its starting position. By supporting the spring element relative to the housing and detent via the annular spacer, wear between the spring and the movement-transmitting components is reduced.

The pawl is equipped with a rolling bearing, in particular a needle bearing, in its groove for passing through the eccentric journal, so that friction and wear during force transmission between the drive mechanism and the insert tool are considerably reduced.

By making the catch in the shape of a disc, wherein the holes and protrusions are arranged in alignment with each other, the structure of the catch is very simple and the cost is low. A detent of this construction is advantageous when the groove of the clamping end of the insert tool is a slot extending transversely to the direction of movement, which has substantially the same protrusion as the detent in the direction of movement. diameter of. A further advantageous configuration of the catch is obtained if the groove of the clamping end of the insert tool also has a larger diameter in the direction of movement than the projection inserted therein.

By making the catch in the form of a link with a head provided with a protrusion, undesired rotation of the catch inside the housing is avoided and a very quiet and low-wear operation of the hand tool is achieved , wherein the head is guided in a groove of the longitudinal guide in a vibration-damping manner. At this time, the axially parallel arrangement of the protrusions to the eccentric journal and the radial spacing from the groove define the rotatability of the detent relative to the eccentric journal, thus avoiding the eccentric journal, Friction and wear between pawl and cartridge tool. It is advantageous here when the groove of the clamping end of the insert tool is circular and has substantially the same diameter as the protrusion of the catch.

Instead of a circular groove, it can also be an elongated clamping end groove extending longitudinally in the direction of movement of the insert tool, the length of which is greater than the stroke of the eccentric. Thus, only when the insert tool is retracted relative to the protrusion of the catch, for example, when abutting on the workpiece, so that the journal can be supported on the edge of the elongated hole, so that its reciprocating movement is transmitted to the insert tool , the movement is transmitted from the driving mechanism to the workpiece through the detent. During idling, the insert tool is stationary due to the rotation of the motor and the pawl, so that the wear on the movement transmission components is significantly reduced in this case.

The cartridge tool is precisely and low-frictionally guided in the region of its clamping end in a longitudinal guide, so that the drive mechanism and the housing are less affected by the lateral forces occurring during operation and the resulting changing frictional forces, The measure is that the longitudinal guide surrounds the flat clamping-side part of the insert tool so that the insert tool is prevented from rotating during cutting operations, ie scraping.

Once the housings have been screwed together, the longitudinal guides as a separate component are immovably mounted inside the housing. The longitudinal guide then bears against a front wall of one of the housings in the direction of movement of the guided insert tool, thereby securing it in such a way that it cannot be lost, without play, but at the same time easily replaced, This is because the longitudinal guide can be removed from the front region of the housing after the housings have been gently separated from one another.

Since the longitudinal guide is a separate part, it receives the bending force transmitted to the housing via the shank of the plug-in tool in a box-like manner and guides this force further to the housing over a large area, so that the housing is only slightly stressed. bending and twisting forces. And can be designed as a lightweight structure. The rolling bodies at both ends of the guide groove of the longitudinal guide mechanism avoid wear or friction between the longitudinal guide mechanism and the tool, so that there is only rolling friction here instead of sliding friction.

The longitudinal guide has on its side facing the opening a needle-shaped rolling body located above the guide groove, and on its side facing away from the opening has a needle-shaped rolling body located below the guide groove, As a result, twisting of the shank of the tool is avoided, ensuring rolling friction instead of sliding friction.

A sealing cap closes an opening in the front region of the housing through which the shank of the insert tool passes and serves as a sliding guide and vibration damping for the insert tool.

The cartridge tool may be a chisel, spatula, spatula or similar tool made of metal such as hard metal or high speed steel for increased durability. Such tools are used for various purposes, e.g. for scraping, removing paint, pasting paper, carpet glue, foam residues, needle felt, PVC, and also for cleaning, e.g. for removing residual dirt such as glue drops, mortar, plaster, Putty, glue, paint and silicon residues, mortar and cement residues on building boards, etc. Finally, subfloor preparation can be carried out, such as preparation of seamless floors and cement, scraping welds and protrusions, repairing cracks, and removing floor tile glue.

The plug-in tool has a flat, in particular rectangular, cross-section in the region of the shank, which can be guided in a longitudinal guide, in particular in a flat groove, and elastically absorbs the bending forces during scraping in a spring-like manner. This prevents the tool insert from rotating about its longitudinal axis and elastically damps impacts between the workpiece and the operator when the scraper is in operation.

Since the cartridge tool is a wear part, its quick replaceability is a great advantage. This advantage is achieved by the cooperation of the positioning elements of the insert tool with the positioning elements of the hand-held power tool. Therefore, not only hand-held power tools, in particular hand-held power tools combined with clamping and guiding means, but also plug-in tools are inventive.

In the following description the invention will be explained in detail with reference to some embodiments shown in the drawings. in,

Figure 1 shows an exploded view of an embodiment of a hand-held power tool according to the invention,

Fig. 2A is a longitudinal sectional view of the part marked II in Fig. 1 after assembly,

Figure 2B is a detailed view of the end support of the drive shaft in Figure 2A,

Fig. 3 is an enlarged view of some parts that are matched with the symbol III in Fig. 1,

FIG. 4A is a longitudinal sectional view of a portion of another embodiment of a hand-held power tool according to the present invention,

Figure 4B is a detailed view of the end support of the drive shaft in Figure 2B,

Fig. 5 is an exploded view similar to Fig. 4 of some parts of the machine tool in Fig. 4A,

Figures 6 and 7 are respectively an elevation view and a top view of a plug-in tool, which belongs to the machine tool shown in Figures 1-3, and which has a matching longitudinal guide mechanism and engages with the detent,

Fig. 8 is an exploded view of the longitudinal guide mechanism with rolling elements,

Figures 9, 10, 11 are variants of cartridge tools for scrapers,

Fig. 12 is a longitudinal sectional view of another embodiment of the scraper before assembling the cartridge tool,

Figure 13 is a view of the scraper shown in Figure 12 after insertion of the cartridge tool,

Figure 14 is a detail view of the button used to release the cartridge tool from the clamped position in the scraper.

FIG. 1 shows an exploded view of an embodiment of a hand-held electric tool machine (referred to as a scraper 10 ) for scraping a workpiece, and FIG. 2A is a partial longitudinal sectional view thereof. Its cylindrical shell 11 is formed by two plastic shell halves 12, 14, the shell 11 has a thickened portion 30 at the rear and a neck portion 32 inclined with respect to the axis of the shell at the front. The part of the housing between the neck portion 32 and the thickened portion 30 forms the handle 28 . The half-shells 12 , 14 can be connected with screws 26 .

A cable, not shown, can be fastened to the housing 11 with a further screw 24 and clamped in place. Mounted inside the housing 11 is an electric motor 16 , which houses a fan wheel 18 , whose drive shaft 19 is mounted in a ball bearing 20 and is non-rotatably connected to a bevel pinion 22 . The pinion 22 meshes with a conical disc gear 48 mounted non-rotatably on a transmission shaft 50 , the axis of rotation 36 of the disc gear 48 being at right angles to the drive shaft 19 .

The bearing part of the transmission shaft 50 far away from the tool is formed by an annular sliding bearing 40 which can be inserted into a cylindrical bearing seat 38 of the housing 12, a pressure spring 42, a washer 44 and a ball 46, the ball 46 bearing In a central groove 43 in the upper end face of the transmission shaft 50 .

The bearing part of the drive shaft 50 close to the tool is formed by an annular bearing sleeve 56 , an annular washer 54 and a rolling bearing or needle bearing 58 .

An eccentric journal 52 (with eccentric axis 53 ), which is arranged on the end of the drive shaft 50 near the tool, passes through the bearing sleeve 56 , and its free end is inserted from above into a hole 72 of a link-like catch 68 In this case, the detent 68 is supported axially downward on a pressure button 76 .

The distance of the eccentric axis 53 relative to the axis of rotation 36 determines the eccentricity, wherein twice the eccentricity determines the stroke H of the eccentric journal 52 or the catch 68 ( FIG. 7 ).

Between the detent 68 and the bearing sleeve 56 are provided an anti-twist element 62 and a washer 66 with a spaced spring element 64 therebetween. The anti-rotation part 62 which is made into an adjusting washer or a gear ring structure is fitted on the bearing sleeve 56 in a matching manner. The button 76 closes an opening 60 in the lower housing 14 in a dust-tight manner and terminates there flush with the housing contour.

A longitudinal guide 82 for an insert tool 88 is fastened in the interior of the housing 11 behind a front opening 34 of the housing 11 which is formed by corresponding shaping of the housings 12 , 14 . A transverse wall 13 is provided in the upper plastic housing 12 in the region of the opening 34 and is partially engaged with the outer end face 82' of the longitudinal guide 82, preventing the longitudinal guide 82 from the opening 34 or prevent it from being lost. The handle 89 of the insert tool 88 can be moved linearly forwards and backwards in the longitudinal guide 82 . The pawl 68 is rotatably inserted from above via a journal-shaped protrusion 70 into a circular recess 90 in the clamping end 77 of the shank 89 of the insert tool 88 . Once the drive shaft 50 is rotated, the eccentric journal 52 will rotate about the axis of rotation 36 and the detent 68 will act with it. Since the protrusion 70 of the detent 68 is hinged in the groove 90 of the handle 89, the eccentric journal 52 only transmits its forward and backward partial motion to the insert tool 88, so the groove 90 may be circular. Or it is not necessary to make the chute-like elongated hole shown in Fig. 4A, 5.

2A and 3 show that in order to achieve a low-friction, better support of the eccentric journal 52, the pawl 68 is provided with a rolling bearing 73, in particular a needle roller, in its bore 72 for passing through the eccentric journal 52. bearings. The projections 70 cooperating with the grooves 90 are arranged axially parallel to the bore 72 or the rolling bearing 73 at a certain distance.

As shown in Figure 2A, the free end of the handle 89 adjoins the hole 72 for the eccentric journal 52 on the rim of the flange 71' of the pawl 68. The protrusion 70 here also serves to prevent loss of the insert tool 88, wherein the flange 71' can also transmit the movement of the eccentric journal 52 to the clamping end 77. In the stop position, the recess 90 in the clamping end 77 is positioned exactly flush with the protrusion 70 of the catch 68 . This makes it easy to install the insert tool 88, because when the insert tool 88 feels well abutted on the flange 71', it ensures that the projection 70 is snapped into the groove 90, thereby achieving the insert tool. The exact clamping position of the tool 88, so that the pressure button 76 can be released.

As can be seen from FIGS. 1 to 3, the detent 68 is guided and elastically axially movably supported along the eccentric journal 52, and the protrusion 70 of the detent 68 can engage the insert tool 88 when it moves axially. The groove 90 of the disengagement, thereby can disengage the driving of the insert tool 88. This allows easy removal of the cartridge tool 88 by hand for replacement.

The catch 68 is moved to the release position by a pressure button 76 which can be pushed by the fingers of the operating hand. The pressure button 76 is movably supported in the housing 14 in the opening 60 of the housing 11 as an engine piston in a cylinder, at this time the pressure button 76 can be connected to the detent 68 (the pressure button 76 is supported on the detent 68) movement in the same direction.

Between the pawl 68 and the lower housing 14, a pressure spring 64 that is flush with the drive shaft 50 and concentric is installed, and its end is supported on the pawl 68 and the pressure button 76 through an annular gasket 66 and will The pressure button 76 is depressed in its original position. The compression spring 64 is supported against the detent 68 . The annular spacer 66 prevents the reciprocating motion of the detent 68 from being transmitted to the compression spring 64 .

In addition, it can be seen that the pressure button 76 is prevented from falling off by means of the hooks 75 , 79 which stop inside the housing 14 . For support against the rod-shaped detent 68 , radial ribs 8 and 9 are provided on the pressure button 76 .

The insert tool 88 is mounted in the longitudinal guide 82 with its section between its working end 92 having a cutting edge and its clamping end 77 . The longitudinal guide 82 is designed (see also FIG. 8 ) in such a way that it surrounds the flat shank 89 of the insert tool 88 in a box-like manner, thereby absorbing transverse forces occurring during processing. Longitudinal guide 82 is shaped as a cuboid or cuboid that can be inserted into housing 11 and has a through, flat, right-angled guide slot 67 (see FIGS. 3 and 8 ) to pass through shank 89 of insert tool 88 . Longitudinal guide mechanism 82 has a notch 83 on the side facing pawl 68, and it makes the head 65 centering of pawl 68 that is inserted in the groove 90 of the clamping end 77 of plug-in tool 88, and pawl 68 There is a projection 70 which is inserted into the clamping end 77 of the insert tool 88 and drives the insert tool 88 .

According to Fig. 4A, 5, 6 and 8, there is a transverse groove 81 in the longitudinal guide mechanism 82 and 87, and a groove 81' flush with groove 81 is arranged in the lower housing 14, can The two plastic shells 12, 14 can be connected or disconnected by adding lubricant through this groove or by using a screwdriver. Unlike the longitudinal guide 82 , the longitudinal guide 87 is influenced by the structure of the disc-shaped detent 69 without the cutout 83 .

The longitudinal guides 82 and 87 do not necessarily have to be hexahedral, and different configurations can also be selected as required.

FIG. 2B, like FIG. 4B, shows details of the upper support of the drive shaft 50 in the housing 11, wherein the pressure spring 42, the central slot 43, the spacer 44, the ball 46 and the upper part of the drive shaft 50 can be clearly seen.

As can be seen from Figures 1 to 5, the bearing portion of the transmission shaft 50 facing the tool is formed by a bearing sleeve 56 supporting a rolling bearing 58, which is released by an annular wedge 57 acting like a steep thread. The anti-rotational part 62 can then be adjusted axially relative to a not shown counter-ring wedge of the housing 14 and, after the pressure button 76 and the catch 68 have been removed, can be accessed from the outside, for example with a screwdriver or the like.

Instead of the annular wedge 57, an external thread can also be provided on the bearing sleeve 56, which thread must be able to be screwed into a mating internal thread on the housing side.

The anti-rotation part 62 of the bearing sleeve 56 is designed as a snap ring with external teeth, which snaps into two opposite grooves 59 on the lower outside of the bearing sleeve 56 by means of two radial springs 61 located on its inner side. The compression spring 64 is supported on the anti-rotation part 62 such that the anti-rotation part 62 axially tensions the compression spring 64 relative to the bearing sleeve 56 or the housing 11 and thereby fixes it. The anti-rotation part 62, that is, the snap ring, is non-rotatably connected with the housing 14 through an external tooth part, especially cooperates with the external tooth part of the anti-rotation part 62 not shown in the figure on the side of the case Some of the protrusions are connected in a non-rotatable manner, thereby preventing the rotation of the bearing sleeve 56.

According to FIGS. 1 to 5 , the tool 88 or 188 protrudes through an opening 34 in the front region of the housing 11 which is closed by a sealing cap 86 . A protective sleeve 94 may be placed over the blade or working end 92 of the insert tool 88 or 188 to protect the blade from damage and to prevent the user from being cut by the blade, especially when transporting the scraper 10 .

According to FIGS. 4A to 5 , a detent 69 of an orifice structure is designed, which is different from the detent 68 of the link structure in FIGS. 1 to 3 . An eccentric journal 51 of the transmission shaft 50 is inserted into a central hole 72' of the pawl 69, and this eccentric journal 51 is significantly shorter than the eccentric journal 52 in FIGS. 1 to 3 . This shorter dimension is necessary because thus the eccentric journal 51 does not engage directly with the recess 91 of the clamping end of the insert tool 188 , so that the insert tool 188 can move in the transverse direction of the eccentric journal 51 (It can be disassembled next to its free end).

The central bore 72' can also be fitted with a needle bearing 73 like the bore 72 in Figures 2A to 3, so that the movement of the eccentric journal 51 is transmitted to the pawl 69 and the insert tool 188 with low wear.

An annular projection 71 concentric with the groove 91 of the pawl 69 protrudes from the free end of the eccentric journal 51 and is inserted into the groove 91 formed as an elongated hole in the clamping end 77 of the insert tool 188 . The groove 91 of elongated hole structure is arranged near the free end of clamping end 77, wherein its longitudinal extension is arranged transversely along the direction of motion of cartridge tool 188, and the diameter of stroke H than eccentric journal 51 will grow two times at least. Times the eccentricity of the eccentric journal 51. The width of the groove 91 is such that the protrusion 71 can be inserted into the groove without play. The shank 89 of the cartridge tool 188 among Fig. 4 A is longer than that among Fig. 2A, because the insertion point to the catch 69 is located deeper inside the housing 11, but the position of the blade is relative to the opening 34 of the housing 11. It is consistent with the embodiment shown in FIGS. 2A and 3 .

FIGS. 6 and 7 show a cartridge tool 288 of the scraper 10 of FIGS. 1 to 3 . The difference between the plug-in tool 288 and the plug-in tool 88 of FIGS. The width depends on the size of the outer diameter of the circular cross-section journal 70 . Its longitudinal extension will be more than twice the eccentricity of stroke H or eccentric journal 52 than the outer diameter of eccentric journal 52 . In this way, when the plug-in tool 288 is subjected to a force applied from the front end, it can only reciprocate or be reciprocated when the motor rotates, so that the protrusion 70 can be supported on the front edge of the groove 90 together. 193 on. Thus, once the insert tool 288 is lifted from the workpiece, it stops moving even though the motor 16 is on. Consequently, the loss of energy, the generation of noise and the wear on the longitudinal guide 82 and on all parts transmitting the movement of the scraper 10, for example between the pawl 68 and the clamping end 77, are very small. Furthermore, the groove 93 is farther from the free end of the clamping end 77 than the groove 91 of the insert tool 188 , 388 , 488 , 588 shown in FIGS. 4A , 5 and 9 .

FIG. 8 shows an enlarged view of the longitudinal guide 82 in FIG. 1 . Longitudinal guide mechanism 82 is equipped with rolling elements 78 and 84 similar to a needle bearing, they are installed in the front and rear of right-angled flat guide groove 67, and tool 88,188,288,388,488 is supported rollingly above them and 588. Rolling bodies 78 and 84 are supported in corresponding grooves 85 of longitudinal guide 82 . By arranging the rolling elements 78 and 84 in this way, the sliding friction in the longitudinal guide mechanism 82 is greatly reduced, their bearing capacity is improved, the generation of heat and the wear and tear on the scraper 10 are reduced, and the plug-in type is prevented by the casing 11. Bending Stresses for Tool 88-588.

The cooperative operation between the longitudinal guide mechanism 82 and the linkage-type detent 68 is shown in FIGS. 1, 2A, 3 and 7. In FIG. The latch 68 has a head 65 provided with a projection 70 which engages rotatably in a cutout 83 serving as a guide groove of the longitudinal guide 82 . This ensures that, when no tool 88 , 288 is mounted on the scraper 10 and the motor 16 is started again in this situation, the head 65 and thus the pawl 68 are now also guided in the housing 11 .

FIGS. 9, 10 and 11 each show a plug-in tool, which is a grooving chisel 388, a wide scraper 488, and a spatula 588, for use with the scraper 10 shown in FIGS. 4A and 5.

FIG. 12 shows a scraper 100 according to the invention which largely corresponds to that shown in FIGS. 1 , 2A and 3 . Its main difference is a pressure button 176, and it is positioned at clasp 175,179 and two positioning cards 177,178 are housed on its side close to tool. Locating catches 177, 178 catch on one edge 101 of housing 111 when moving pressure button 176 axially upwards into the release position and secure pressure button 176 in this position. When tool 288 is advanced in longitudinal guide mechanism 182, the free end 77 ′ of the clamping end 77 of tool 288 has crossed positioning card 177,178 after passing through protrusion 170 of detent 168, and positioning card 177,178 is pressed. out of their holding positions. The pressure button 176 thus returns from the release position to its starting position.

When changing the tool, it is not necessary to keep the pressed state of the pressure button 176 until the protrusion 170 of the push rod 168 snaps into the grooves 90, 93 of the positioning card 177 of the plug-in tool 88-588, but the user The hands are only used to securely hold the scraper 100.

FIG. 13 shows a view of the scraper 100 shown in FIG. 10 with the cartridge tool 188 installed, wherein the pressure button 176 is returned to its starting position downwards, and the protrusion 170 of the detent 168 is inserted into the groove 93. middle. Once the end 77' of the clamping end 77 of the insert tool 288 abuts against the rim 71' of the detent 168, the projection 170 is automatically snapped into the groove 93 by the force of the spring 164.

From FIGS. 12 and 13 , the longitudinal section of the longitudinal guide mechanism 82 can be clearly seen, wherein the front needle roller 84 is supported above the guide groove 67, and the rear needle roller 78 is supported in 82 above the guide groove 67, Thereby got rid of when working with hand-held electric machine tool, the situation that the shank 89 of tool 288 is bent by the force that guides through the working end 92 of plug-in tool 88-588 or blade, and has guaranteed that it is rolling friction rather than sliding friction.

FIG. 14 shows a detailed view of the pressure button 176 with the locking tabs 177, 178, wherein the clasp, which is not shown in detail, can also be seen.

In addition to the eccentric drive between the motor and the tool described and shown according to the embodiment of the scraper, other known variants of the eccentric drive can be used in order to convert the rotational movement of the motor into the reciprocating motion.

Claims (25)

1. A hand-held electric power tool (10, 100) having a housing (11, 111) in which a motor (16) and a drive shaft (50) are housed, and an eccentric part ( 51, 52), a reciprocating plug-in tool (88, 188, 288, 388, 488, 588) connected to the eccentric part (51, 52) is also housed in the housing, the tool has a holding Clamping end (77) with a groove (90,91,93) in housing (11,111), wherein between insert tool (88,188,288,388,488,588) and A movement-transmitting detent (68, 69) is installed between the eccentric parts (51, 52), which detent (68, 69) is rotatably connected to the The eccentric part (52) is characterized in that the detent (68, 69) is detachably inserted into the insert tool (88, 188, 288, 388) by means of a protrusion (70, 71), in particular a journal structure. , 488, 588) in the groove (90, 91, 93) of the clamping end (77). 2. The hand-held electric power tool according to claim 1, characterized in that the pawl (68, 69) surrounds the eccentricity of the eccentric journal (51, 52) structure with its hole (72, 72') connection. Part and in the longitudinal direction of the eccentric part, in particular guided along the eccentric part, it is movably supported. 3. A hand-held electric power tool according to claim 2, characterized in that the catch (68, 69) can be disengaged from the plug-in tool (88, 188, 288, 388, 488, 588) by axial movement , thereby detaching the insert tool (88, 188, 288, 388, 488, 588) from the drive mechanism so that it can be easily removed from the housing (11, 111). 4. The hand-held electric power tool as recited in claim 3, characterized in that the machine has a pressure button (76, 176) with which the pawl (68, 69) can be moved axially manually. 5. The hand-held electric power tool according to claim 4, characterized in that the pressure button (76, 176) is supported on the detent (68, 69) and can be moved in the same direction as the detent (68, 69) to Installed in the housing (11, 111) in a release position. 6. The hand-held electric power tool according to claim 5, characterized in that, the pressure button (176) is provided with a positioning hook (177, 178), which is relative to the housing (111), especially clamps a hook located on the housing (111). ) inside the edge (101) is fixed on the release position, and the positioning hooks (177, 178) are released together with the plug-in tool (288) when the plug-in tool (288) is inserted into the scraper (100) Then when the tool (288) reaches the final position, the detent (68) automatically enters the clamping position and the pressure button (176) enters its initial position. 7. The hand-held electric power tool according to claim 6, characterized in that a spring (64) substantially aligned with the transmission shaft (50) is supported between the pawls (68, 69) and the housing (11), especially via (66). , 111), the ring spacer by means of springs (64) detents (68, 69), thereby also pressing the pressure buttons (76, 176) back to their starting position. 8. Hand-held electric power tool according to one of the preceding claims 2-7, characterized in that the pawl (68) is equipped with a rolling bearing (73), in particular a needle bearing, in the bore (72), for to pass through the eccentric journal (52). 9. The hand-held electric power tool according to claims 1-8, characterized in that the detent (69) is disc-shaped, wherein the hole (72') and the protrusion (70) are arranged in alignment with each other. 10. The hand-held electric power tool according to claim 9, characterized in that the groove (91) on the clamping end (77) of the plug-in tool (188) is an elongated hole extending transversely to the direction of movement , its diameter is at least twice the eccentricity of the eccentric journal (51) larger than the protrusion (71) inserted therein. 11. The hand-held electric power tool according to claim 10, characterized in that the groove 91 on the clamping end 77 of the plug-in tool (188) has at least one groove 91 in the direction of movement that is two times larger than the protrusion 71 inserted therein. times the diameter of the eccentricity of the eccentric journal 51. 12. The hand-held electric power tool according to claims 1-8, characterized in that the pawl 68 is an elongated link structure with an opening (71) on one end and a protrusion (70) on the other end , which are arranged axially parallel to one another, in particular. 13. The hand-held electric power tool as claimed in claim 12, characterized in that the groove (90) on the clamping end (77) is circular and the projection (70) of the detent (68) is substantially free of play. Installed in this groove (90). 14. The hand-held electric power tool according to claim 12, characterized in that the groove (93) of the clamping end (77) has an elongated hole extending longitudinally in the direction of movement of the plug-in tool (288), which Twice the eccentricity of the eccentric journal (52) or longer than its stroke H longer than the outer diameter of the protrusion (70, 71), the protrusion (70, 71) is substantially horizontally hingedly mounted on the long shaft without play. in the hole. 15. Hand-held electric power tool according to one of claims 1-14, characterized in that the plug-in tool (88, 188, 288, 388, 488, 588) can be mounted in one of the housings (11, 111) The longitudinal guide (82) is displaceably guided, wherein its flat clamping end (77) is surrounded substantially without play. 16. The hand-held electric power tool as claimed in claim 15, characterized in that the longitudinal guide (82) is a separate part which can be fixedly mounted in the housing (11, 111), in particular a cube or cuboid or the like , it has a through especially rectangular guide groove (67) for passing through the plug-in tool (88,188,288,388,488,588). 17. The hand-held electric power tool according to claim 16, characterized in that, the longitudinal guide mechanism (82) is equipped with rolling elements (78, 84) at both ends of the guide groove (67), on which the Cartridge tools (88, 188, 288). 18. The hand-held electric power tool according to claim 17, characterized in that the longitudinal guide mechanism (82) is equipped with a needle roller (84) structure located in the guide groove (67) on its side facing the opening (34). The rolling body above has a rolling body located below the guide groove (67) in the structure of a needle (78) on its side away from the opening (34). 19. The hand-held electric power tool as recited in claim 18, characterized in that the catch (68), in particular with a head (65), is inserted into a cutout (83) and is articulated in a rotationally fixed manner on the longitudinal guide (82) superior. 20. The hand-held electric power tool as claimed in one of the preceding claims, characterized in that the plug-in tool (88, 188, 288, 388, 488, 588) extends from the front area of the housing (11, 111) An opening ( 34 ) that is sealed by a sealing cap ( 86 ) protrudes, wherein the sealing cap ( 86 ) is supported on the insert tool, in particular in a sealing manner. twenty one. The hand-held electric power tool as claimed in one of the preceding claims, characterized in that the insert tool (88, 188, 288, 388, 488, 588) has a cutting edge extending transversely to its direction of motion, Use as a chisel, spatula or similar. twenty two. Plug-in tool for a hand-held electric power tool according to the preamble of claim 1, in particular in accordance with claim 1, characterized in that the plug-in tool (88, 188, 288, 388, 488 , 588) of the handle (89) has a flat, especially rectangular cross-section, which can be guided in a longitudinal guide (82), especially in a flat guide groove (67), essentially without play. twenty three. The plug-in tool according to claim 21, characterized in that the groove (91) in the clamping end (77) of the plug-in tool (188) is an elongated hole extending transversely to its direction of motion , for hingedly engaging the protrusion (71) of the detent (69), which is at least a stroke H longer than the diameter of the protrusion (71). twenty four. The insert tool according to claim 21, characterized in that the recess (90) in the clamping end (77) of the insert tool (88) is round and has at least the catch (68) The same diameter of the protrusion (70). 25． The insert tool according to claim 21, characterized in that the recess (93) in the clamping end (77) of the insert tool (288) is a movement of the insert tool 288 (288). The longitudinally extending elongated hole in the direction is at least longer than the outer diameter of the projection (70) by the stroke H of the eccentric journal (52), and the projection (70) is mounted in the elongated hole substantially transversely without play.

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