WO2009147152A1

WO2009147152A1 - Portable electric machine tool arrangement

Info

Publication number: WO2009147152A1
Application number: PCT/EP2009/056762
Authority: WO
Inventors: Thomas Raff; Juergen Gairing; Steffen Weber
Original assignee: Robert Bosch Gmbh
Priority date: 2008-06-02
Filing date: 2009-06-02
Publication date: 2009-12-10
Also published as: DE102008002159A1

Abstract

The invention relates to a portable machine tool arrangement, in particular a portable circular saw arrangement, a router arrangement or a compass saw arrangement or the like, having a portable machine tool, at least one guide rail which can be positioned or mounted on a workpiece to be processed, and a longitudinal guide for displacing the portable machine tool longitudinally on the guide rail. It is provided that the guide rail (1) has at least one recess (19) which is open at the edge and in which there are ribs (20).

Description

description

Title Electric hand tool machine arrangement

The invention relates to an electric hand machine tool assembly, in particular electric circular saw assembly, Elektrooberfräsenanordnung or Elektrostichsägenanordnung or the like, according to the preamble of the claim, and a guide rail for such an arrangement.

State of the art

Of electric hand tool machine arrangements, in particular those comprising an electric circular saw, electric router, electric jigsaw or the like electric hand tools, it is known from the prior art to provide these for longer straight cuts with a guide rail as a longitudinal guide for longitudinal displacement of the electric hand tool machine to effect a straight cut. For example, from DE 10 2004 017 420 Al an electric hand tool, namely in particular circular saw, with a auflegbaren on the workpiece to be machined guide rail, in which a solidly executed guide rail a T-longitudinal groove is introduced into which a mounted on the electric hand tool sliding block intervenes. This has the disadvantage that the guide rail must be made relatively solid. It is therefore unhandy to handle, in particular by their weight and massive design. It is also suitable only for those electric hand tool machines that receive or have the corresponding sliding block. From DE 102 51 578 B3 a guide rail for hand tool machines is known, which has stop pieces, which form effective stops of the support plate in the longitudinal direction and in the height direction. This too is solid and in one piece. Here is in particular, in turn, the heavyweight and in particular longitudinal extension unwieldy execution disadvantageous.

Disclosure of the invention

In contrast, an electric hand tool machine arrangement, in particular electric circular saw assembly, Elektrooberfräsenanordnung or Elektrostichsägenanordnung or the like proposed with an electric hand tool and at least one auflegbaren or clamped on a workpiece to be machined guide rail and a longitudinal guide for longitudinal displacement of the electric power tool on the guide rail. It is provided that the guide rail has at least one open-edged recess in which there is a ribbing. Unlike in the prior art, the guide rail is consequently not designed as a solid component, which is in particular made of the full material, for example milled, but as a guide rail with an open-edged recess. Nevertheless, in order to effect a better stability, a ribbing is provided. This results in a significant material savings and thus a significantly lower weight of the guide rail and a significantly improved handling.

In a further embodiment it is provided that the recess is located on the lower or rear side of the guide rail. The guide rail can therefore be seen as an elongate, rectangular, in the broadest sense in gutter or trough shape forming body or trained, open profile, with the recess (ie, so to speak, the opening of the tub) on the bottom or back of the guide rail. By bottom or back is meant the area of the guide rail which is placed on the workpiece. The ribbing is preferably arranged within the recess, so the profile and provides in connection with side walls of the guide rail for the intended use corresponding torsional stiffness of the guide rail.

In a further, particularly preferred embodiment, the ribbing is in particular by at least one longitudinal rib and / or transverse rib and / or Diagonal rib formed. A longitudinal rib here is one that follows the longitudinal extent of the guide rail, a transverse rib such that is oriented substantially transversely, in particular at right angles to a longitudinal rib or to the longitudinal extension, and a diagonal rib such as either between corners of the guide rail or runs between corners, which are formed by longitudinal ribs and transverse ribs, that extend substantially at 45-degree angle to longitudinal ribs and / or transverse ribs. In particular, it is also possible to provide and combine a plurality of identical or different ribs in the recess in order to effect the desired torsional rigidity desired for the respective intended use and / or the respective length of the guide rail.

In a particularly preferred embodiment, a plurality of ribs are provided, which are interconnected via intersections. Consequently, the above-described ribs are at least partially combined, so that, for example, longitudinal ribs and transverse ribs or transverse ribs and diagonal ribs or longitudinal ribs, transverse ribs and diagonal ribs are provided, which are connected to one another via intersections, ie in particular also integrally with one another and also into the recess bounding Pass over the profile walls, but at least positively and / or non-positively connected to each other. With relatively little effort and low rib thickness, this can achieve an excellent torsional rigidity over the entire extent of the guide rail.

In a further embodiment, at least two guide rails are provided, which can be connected to each other with insertion means of length. On the known from the prior art guide rails is disadvantageous that they are integrally formed over their entire, usually considerable length. They are therefore to be transported separately to the electric hand tool with which they are to be used. According to the invention, however, at least two guide rails are provided, which for example have such a length that they can be transported together with the electric hand tool with which they are to be used in a packaging unit, for example a machine case. In order to effect a guide rail length required for the execution of work and longitudinal cuts, the guide rails with insertion means are connectable to one another lengthwise. There are therefore provided plug-in means that it allow to connect several guide rails together. In this case, it is also provided in particular that the guide rail can be extended as desired, that is to say it has no constructive maximum length.

In a preferred embodiment, the plug-in means are designed as at least one projection, in particular tongue and as at least one plug-in recess receiving the projection, in particular the tongue. Consequently, at one end of the guide rail, a projection, in particular a tongue is formed, which engages as a plug-in means in at least one receiving recess receiving it on another guide rail. Here, a positive / non-positive connection is made, so that the guide rails can not be easily separated from each other. The longitudinal guide is thereby continued linearly and without interruption, so that the electric hand tool slides readily from one guide rail to the next and is guided without interruption.

In a preferred embodiment, at least one snap connection is provided, or at least one insertion means forms a snap connection. A snap connection in this case is any connection in which a connecting element engages in another such that it engages, for example, hook-shaped with a projection in a recess corresponding thereto, wherein to release the snap connection actuation of the hook or a corresponding means is required, for example, a bending back or bending away a part of the snap connection, in particular of the hook, from the recess.

In a further preferred embodiment, the projection, in particular the tongue on one end face of the guide rail and the plug recess on the other side of the guide rail. In this way, any juxtaposition and lengthening of guide rails is possible without constructive obstacle to any lengthening obstacles.

In a further embodiment it is provided that the longitudinal sides of the guide rail are provided with a chip breaker. In particular, it is provided in this case that the chip breaker is arranged on both longitudinal sides of the guide rail, preferably symmetrically to the guide, preferably from a guide rib is formed. It is therefore possible to use the electric hand machine tool assembly with the cutting region of the electric hand tool on one side, but also on the other side. In particular, can be used in this way, for example with an electric circular saw, the one longitudinal side of the guide rail for straight cuts, the chip breaker is set at this one longitudinal side on the distance of the saw blade to a longitudinal wall of the guide rail, which in particular by way sawing or sawing the first time use the chip breakage is effected, so that always a very good investment of Spanreisschutzes is guaranteed with excellent fit, and the other long side is used for bevel cuts, the chip breaker is set here to the distance of this now pivoted saw blade to the corresponding side wall of the guide rail. The chip breaker can in this case for example consist of rubber or another elastic material and in particular be designed as a detachable, replaceable part. If the guide rib is arranged asymmetrically on / on the guide rail (ie not longitudinally centered), the guide rail (ie for use once the one, then the other longitudinal side) already results in a different distance between the non-pivoted saw blade and the longitudinal sides of the guide rail. This is particularly advantageous for pivoted saw blade (for miter cuts), since an approximation of the saw blade by pivoting is effectively compensated by the initially (not pivoted) greater distance of the saw blade to the guide rail; the immersion point of the saw blade on the upper side of the cut material is also adjacent to the guide rail, so that even this results in a good chip breakage. This also prevents accidentally sawing into the guide rail.

In a further embodiment, there is an anti-slip on the back or bottom of the guide rail. This is preferably formed of an elastic material, for example of rubber or an elastomer, and causes the guide rail is not routed without mechanical strain on the workpiece. In this case, the anti-slip could be, for example, more or less completely conceal the ribbing or be provided as a section-wise, flat support. Characterized in that the force usually takes place in the longitudinal extent of the guide rail, in particular when guiding the Electric hand tool, results in the use of rubber or an elastomer in the longitudinal extent of excellent adhesion and securing the guide rail against slipping.

The function of the non-slip on condition that the guide rail rests on this on the respective workpiece and that the guide rail is at least partially supported on the anti-slip on the workpiece. In elastic training of non-slip on the likelihood of their compression travel may be formed by parts of the ribbing and / or side and / or end walls of the open-edged recess in which the ribbing is located. At these parts of the ribbing and / or the boundary walls, the ribbing is at least retracted in the area covered by the anti-slip surface, so that the connection of the anti-slip surface is protected for ribbing, in particular with respect to shear forces.

In a further preferred embodiment, the guide rail consists of a plastic. The guide rail is thus easy and inexpensive to produce with less weight.

Further advantageous embodiments will become apparent from the dependent claims and combinations thereof.

Brief description of the drawings

The invention will be explained in more detail with reference to an embodiment and with reference to figures.

FIG. 1 shows a guide rail for a

Electric hand tool machine in supervision;

Figure 2 shows the same guide rail from its underside and

Figure 3 shows the mating of two guide rails, of which

Bottom view. Embodiment (s) of the invention

FIG. 1 shows a guide rail 1 for an electric hand-held power tool (not shown) of an electric hand-held power tool assembly, not shown. The guide rail 1 consists of a guide rail body 2, the opposite longitudinal sides 3 and - each end - arranged at right angles thereto, in turn, opposite end faces 13,15 has. The guide rail 1 has a rectangular plan view, wherein between the longitudinal sides and end faces a guide rail top 5 is arranged. On the guide rail top 5 is located, unequally spaced from the longitudinal sides 3, raised a parallel to the longitudinal sides 3 guide rib 6, which in turn has a substantially rectangular cross section, wherein they formed in the longitudinal extent of the guide rail 1 from one end face 13 to the opposite end face 15 uninterrupted is. The guide rib 6, in turn, has rib side walls 7 parallel to the longitudinal sides 3 and a guide rib upper side 8 parallel at least essentially to the guide rail upper side 5. The guide rib 6 is - see Fig. 2 - against an open-edged recess 19 of the guide rail 1 open.

On the guide rail top 5 is not shown

Electric hand tool machine placed, wherein the guide rib 6 dips into shape-adapted recesses or at least one shape-adapted recess, which preferably extends in the longitudinal extent of the electric hand tool. The electric hand tool, not shown, is in this way on the

Guide rail 1 in the engagement of the guide rib 6 longitudinally displaceable, wherein a lateral deviation of the electric hand tool, not shown in the axial / longitudinal direction of the guide rail 1, but transversely thereto, by the guide rib 6 is prevented, which is engaged in the form-adapted Recess of the electric power tool, not shown, located.

On the longitudinal sides 3 of the guide rail 1, a chip breaker 9 is arranged in each case. This extends parallel to the longitudinal side 3 of an end face 13 to the opposite end face 15. The chip breaker 9 is preferably made of a Elastomer or rubber 10, wherein an elasticity corresponding to the respective application is provided. The chip breaker 9, for example, sawed at first use of the guide rail 1 with the electric hand tool, not shown, for example, an electric circular saw, or at least partially, namely in its longitudinal extent, sawed (namely on the longitudinal side 3 of the guide rail 1 more distant longitudinal edge 11 of the chip breaker 9). In this way, a reliable and substantially flush system of the chip breaker 9 is achieved, for example, on the circular saw blade, so that when dipping the individual sawteeth of the circular saw blade from the workpiece, not shown, to be machined the tearing of chips from the workpiece by the support of the chip breaker. 9 is prevented on the workpiece.

To connect the guide rail 1 with another, not shown here, another guide rail 1, the guide rails 1 plug-in means 12, on the one, first end face 13 as projections 14, in particular in the form of tabs and on the other, second end face 15 as Plug depressions 16, in particular in the form of plug receptacles are designed, wherein the plug depressions 16 of a guide rail 1 are formed as receptacles for the projections 14 of another, second guide rail 1.

Fig. 2 shows the guide rail 1 viewed from its bottom 17. Between the longitudinal sides 3 and the end faces 13, 15 of the guide rail 1 on the one hand and the guide rail top 5 connecting them (shown here only from their bottom 18 due to the perspective), which together form the guide rail body 2 of the guide rail 1, an open-edged recess 19 is arranged. This has in the front side 15 adjacent, the plug-in recesses 16 receiving area on a closed to the bottom 17 of the guide rail 1 section 24. The recess 19 is the guide rail 1, the principal appearance of an open, flat lid or an open, rectangular rectangular shell, the guide rail 1 thus presents itself against its underside 17 open, closed end longitudinal profile. In the open-edged recess 19 is of a Longitudinal side 3 to the other longitudinal side 3 and from the one end face 13 to the opposite end face 4 of the closed portion 24 extending a ribbing 20 arranged, which consists of longitudinal ribs 21, 38 and 22 diagonal ribs. The longitudinal ribs 21, 38 in this case extend from the end face 13 to the opposite end face 4 of the section 24, while the diagonal ribs 22 are arranged obliquely thereto, for example at an angle of 45 °. The longitudinal ribs 21, 38 and the diagonal ribs 22 are interconnected via intersection points 23. Each intersection of a longitudinal rib 21, 38 with a diagonal rib 22 in this case forms an intersection point 23 connecting them. In this way it is achieved that an acting on the guide rail 1, for example, geometry-changing force on the diagonal ribs 22 and the longitudinal ribs 21, 38 is received, which are connected to the longitudinal sides 3 and the end faces 4, 13 and each other via the intersections. In this way, there is a very high torsional stiffness of the guide rail 1. The ribbing 20 is preferably made together with the guide rail body 2 by injection molding or in a similar manufacturing manner, preferably being used as a material for the guide rail 1 plastic.

On the one, first end face 13 of the guide rail 1 are formed as plug-in means 12, three projections 14 in particular in the form of tabs, while on the other, second end face 15 as plug-in means 12 three plug depressions 16 are formed in particular in the form of plug receptacles. Of the projections 14, the two outer projections 25 are formed as guide projections 26, while a middle projection 27 is formed as a snap hook 28. This has on its snap-hook bottom 29 a hook projection 30 which engages in a form adapted hook recess 31 of a central plug recess 32 (ie the middle of the three plug recesses 16) on the second end face 15. Of the

Snap hook 28 and the hook recess 31 thus form a snap connection 37. The two outer projections 25 as guide projections 26 engage in outer plug recesses 33 on the second end face 15 and serve the shape stabilization and guidance.

FIG. 3 shows two guide rails 1, namely a first guide rail 34 and a second guide rail 35 at the moment of being connected. For this purpose, in particular designed as tabs projections 14 of the first guide rail 34 are inserted into the plug-in receptacles 16 designed in particular as the second guide rail 35, wherein the connection is not yet is completely closed. The outside guide projections 26 engage in the outer plug recesses 33 of the second guide rail 35, while the snap hook 28 engages in the middle plug recess 32 of the second guide rail 35 for forming the snap connection 37. Whose hook projection 30 is completely engage the complete first guide rail 34 on the second guide rail 35 in the hook recess 31 of the second guide rail 35 and the two guide rails 1 releasably connect with each other in this way. The release of the connection is done by pressing the hook projection 30 within the hook recess 31, whereby its locking action is canceled and the two guide rails 1 can be pulled apart again and thus separated from each other.

To protect against slipping of the guide rail 1 on a workpiece to be machined, the ribbing 20 is partially occupied in both guide rails 1 with arranged in the longitudinal extent of the guide rail 1 on the nip anti-slip pads 36. The anti-slip on lay 36 is preferably made of a soft elastomer, such as a soft rubber.

The strip-shaped anti-slip on layers 36 are adjacent to each other adjacent to the longitudinal sides 3 extending longitudinal ribs 21 and connecting them

Sections of the diagonal ribs 22 and are thus supported substantially flat. Not shown in the figures, that the longitudinal ribs 21 and the diagonal ribs 22 at least in the overlap area for anti-slip on position 36 are preferably taken back relative to the support plane of the guide rail 1 to the respective workpiece something. The support plane is determined by the underside end faces of the longitudinal sides 3 and optionally also end faces 13, 15 or the underside of the closed section 24. As a result, the anti-slip is lent 36 deposited in the connecting region to the longitudinal ribs 21 and the diagonal ribs 22 to the support plane, is protected against overload as well as against peeling by shear forces and has only a relation to the aforementioned support plane projecting area.

It also proves to be expedient if the longitudinal ribs 21 and the diagonal ribs 22 connect directly to the guide rail upper side 5 in one piece and in a corresponding manner to the guide rib 6, so that a Closed support composite results. In this regard, it is also advantageous if at least one of the rib side walls 7 continues against the support plane of the guide rail in a longitudinal rib 38 which preferably ends downwards in the support plane, so that the support plane at least the longitudinal sides 3 and the end face by the lower end faces Longitudinal rib 38 is formed. This also results in a high degree of stiffening and dimensional stability of the guide rail 1 in the region of the guide rib 6 against supporting forces applied via the handheld power tool.

The invention is not limited to electric hand machine tool arrangements, in particular to electric hand tool machines and guide rails used in connection therewith, but is also intended for hand tool machines of other types of drive. The same applies to the formation of a respective guide rail and the guide rail assemblies formed by the assembly of such guide rails, which each represent independent inventions and therefore can be used independently, but especially in conjunction with hand-held and preferably motor-operated hand tool machines.

The invention is not limited to electric hand tool machines, but provided for hand tools of all types of drives.

Claims

claims

1. Hand tool machine arrangement, in particular circular saw arrangement, routers or jigsaw arrangement or the like, with a hand tool and with at least one auflegbaren or clamped on a workpiece to be machined guide rail and with a

Longitudinal guide for longitudinal displacement of the power tool on the guide rail, characterized in that the guide rail (1) has at least one open-edged recess (19) in which a ribbing (20) is located.

2. Hand tool assembly according to claim 1, characterized in that the recess (19) on the back of the guide rail (1).

3. Hand tool assembly according to one of the preceding claims, characterized in that the ribbing (20) is formed by in particular at least one longitudinal rib (21, 38) and / or a transverse rib and / or a diagonal rib (22).

4. Hand tool assembly according to one of the preceding claims, characterized in that a plurality of ribs (21, 22, 38) are provided, which are interconnected via intersections (23).

5. Hand tool assembly according to one of the preceding claims, characterized in that at least two guide rails (1) are provided, which are connectable to each other with insertion means (12).

6. Hand tool assembly according to one of the preceding claims, characterized in that the plug-in means (12) as at least one projection (14) and at least one projection (14) receiving plug recess (16) are formed.

7. Hand tool assembly according to one of the preceding claims, characterized in that at least one plug-in means (12) is part of a snap connection (37).

8. Hand tool assembly according to one of the preceding claims, characterized in that the projections (14) on one end face (13) of the guide rail (1) and the plug recesses (16) on the other side of the guide rail (1).

9. Hand tool assembly according to one of the preceding claims, characterized in that the longitudinal sides (3) of the guide rail (1) are provided with a chip breaker (9).

10. Hand tool assembly according to one of the preceding claims, characterized in that on the underside of the guide rail a

Anti-slip (36) is located.

11. Guide rail for handheld power tools, in particular a forming part of a hand tool assembly according to one of the preceding claims guide rail having as opposing sides to be applied to a workpiece bottom or back and an upper side with longitudinally extending longitudinal guide for a hand tool, characterized, in that the guide rail (1) is designed as a profile with one of its opposite sides, in particular the underside (17) of open-edged recess (19), and is stiffened by a ribbing (20) integrated into the profile.

12. Guide rail according to claim 11, characterized in that the longitudinal guide is formed by a guide rail upper side (5) shaped guide rib (6).

13. Guide rail according to claim 11 or 12, characterized in that the ribbing (20) by longitudinal and diagonal ribs (21, 38, 22) is formed.

14. Guide rail according to one of claims 11 to 13, characterized in that the guide rail (1) on the underside of a non-slip on position (36), which is supported on the ribbing (20), which in the covering area for

Anti-slip on lays (36) in the direction of the guide rail top (5) to the support plane of the guide rail (1) to the workpiece defining underside of the profile is discontinued.

15. Guide rail according to one of claims 11 to 14, characterized in that the guide rail (1) forms one of several identical, to be joined to a rail track guide rails (1), which are assembled as a rail track via plug-in means (12) latched.

16. Guide rail according to one of claims 11 to 15, characterized in that the plug-in means (12) at opposite ends of the guide rail (s) (1) are provided and on the one hand by projections (14), in particular tabs and on the other hand plug-in recesses (16). , in particular plug-in receptacles are formed.

17. Guide rail according to one of claims 11 to 16, characterized in that the guide rail (1) consists of plastic.