Guide rails for guiding handheld machine tools

Abstract

The present invention relates to a guide rail for guiding a handheld machine tool (20), in particular a sawing machine (21), in which the handheld machine tool (20) has a drive motor (23), a work tool (25) driven by the drive motor (23), and a protective cover (30) for the work tool that is adjustable between a cover position (A) and an open position (O), and a rail body (61) has, on opposite sides of its central plane (MI), a mounting surface (62) for placing on a base and a guide surface (63) provided for guiding the handheld machine tool (20), and the guide surface has a mounting surface (62) for mounting on a base and a guide surface (63) provided for guiding the handheld machine tool (20). A guide contour (50) is arranged for guiding the machine (20) along the guide axis (F), so that a working tool (25) of the hand-held machine tool (20) is guided parallel to the guide axis (F) and can cut into a workpiece (W) in the working direction (AR) next to the longitudinal narrow surface (65) of the rail body (61), and the guide rail (60) has a stopper assembly including at least one opening stopper (81, 91) for adjusting the protective cover (30) to an open position (O) when the hand-held machine tool (20) moves along the guide axis (F). At least one opening stopper (81, 91) is adjustable between a stop position (AS) for operating the protective cover (30) on the rail body (61) in the direction of the open position (O) and a release position (FS) for releasing the protective cover (30) to adjust it in the direction of the cover position (A), and when in the stop position (AS), the opening stopper (81, 91) protrudes further in front of the longitudinal narrow surface (65) of the rail body (61) in a direction component parallel to the central plane (MI) of the rail body (61) than when in the release position (FS).

Description

[Technical field]

[0001] The invention relates to a guide rail for guiding a hand-held machine tool, the hand-held machine tool having a drive motor, a working tool driven by the drive motor, and a protective cover for the working tool, adjustable between an open position in which the working tool is released and a covered position in which the working tool is at least partially covered, a rail body of the guide rail has, on opposite sides to a central plane, a rest surface for resting on a base, in particular a workpiece, and a guide surface provided for guiding the hand-held machine tool, on which guide contours are arranged for guiding the hand-held machine tool along a guide axis, so that the working tool of the hand-held machine tool is guided parallel to the guide axis and can cut into the workpiece in the working direction next to the longitudinal narrow surface of the rail body, the guide rail has a stop assembly including at least one aperture stop for adjusting the protective cover to the open position when the hand-held machine tool moves along the guide axis. [Background technology]

[0002] Such a guide rail is described, for example, in DE 10 2014 010 486 A1. In practice, the system is formed, for example, as a so-called cross-cut rail. The handheld tool is, for example, a pendulum hood saw with a pendulum hood as a protective cover. If the handheld tool is moved forward along the guide rail, i.e. along the guide axis, in the working direction, the opening stop opens the protective cover to such an extent that the working tool, for example the saw blade, can cut into the workpiece. The opening stop is formed, for example, by the workpiece and / or a rubber lip against which the saw blade moves when cutting into the workpiece and which strikes in the sense that it simultaneously opens the protective cover or holds it open. If the handheld tool is moved backwards against the working direction, the protective cover comes out of engagement with the rubber lip, which only extends over a portion of the guide rail, so that the protective cover closes again. The spring assembly between the guide rail and the hand tool loads the hand tool and the guide rail in the sense that they move against the working direction towards the area of ​​the guide rail without the rubber lip, in which case the protective cover can reach the covering position again, thereby protecting the operator.

[0003] In practice, however, problems may arise in that the system consisting of the guide rail and the hand tool does not reach the starting position quickly enough in which the opening stop does not hold the protective cover open, which may result in the working tool being left uncovered and possibly injuring the operator.

[0004] From DE 102 20 363 A1, guide rails are known which are designed to be partially flexible or thin so that a processing machine resting against them can be swiveled.

[0005] JP 2009-178943 A relates to a guide rail that can be attached to a workpiece and an electric saw. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] DE 102014010486 [Patent Document 2] DE 10220363 A1 [Patent Document 3] JP 2009-178943 A Summary of the Invention

[0007] SUMMARY OF THE DISCLOSURE It is therefore an object of the present invention to provide an improved guide rail.

[0008] In order to solve the above problem, it is provided that in a guide rail of the type mentioned at the beginning, at least one opening stopper is adjustable between a stop position provided for manipulating the protective cover on the rail body in the direction of the open position and a release position provided for releasing the protective cover for adjustment in the direction of the cover position, and when in the stop position the opening stopper protrudes in front of the longitudinal narrow surface of the rail body more in a directional component parallel to the central plane of the rail body than when in the release position.

[0009] The working tool is, for example, a saw blade, a cutting disk or other cutting tool or the like. The rail body is made in particular of metal, in particular aluminum. The rail body of the guide rail is in particular designed as an extruded part.

[0010] The opening stop is disposed or supported on the rail body so as to be adjustable between a release position and a stop position.

[0011] In the stop position, the opening stopper projects in front of the longitudinal narrow surface in a plane parallel to the guide or support surface, in a central plane, transverse to the guide axis. For example, the opening stopper can be configured as a narrow stopper projection, a hook, an elongated stopper, in particular an elongated stopper surface, or the like. The protective cover strikes against the stopper, for example, when the hand tool is moved along the guide rail in the working direction.

[0012] It is advantageous if at least one opening stop can be pivoted about at least one pivot axis relative to the rail body between the stop position and the release position. The pivot axis is in particular parallel to the guide axis or transversely, in particular perpendicularly, to the guide axis. It is also possible without problem for the pivot axis to run at a flat and oblique angle to the guide axis. If several opening stops are provided, it is also possible for these to be pivoted about different pivot axes, for example one opening stop about a pivot axis parallel to the guide axis and another opening stop about a pivot axis that runs transversely, for example perpendicularly, to the guide axis.

[0013] If the opening stops run along the narrow longitudinal surfaces and / or have an elongated form, then a pivot axis parallel to the guide shaft is particularly advantageous. The opening stops can then be pivoted, so to speak, away from their narrow longitudinal surfaces, for example from the stop position towards the release position towards the rest surface of the guide rail. In the typical use position of the guide rail, the opening stops are pivoted downwards.

[0014] A pivot axis that is transverse to the guide axis, for example at a right angle, is particularly advantageous if an opening stop is provided for opening the protective cover for the first time, so to speak, at the beginning of the displacement movement of the hand tool along the guide rail in the working direction, i.e. for adjusting it to its open position.

[0015] However, instead of this, it is also possible for at least one opening stop to have an opening stop which is displaceable or swivellingly displaceable with respect to the rail body between a stop position and a release position. The opening stop can, for example, be linearly displaceable. A superposition of a swiveling and sliding movement can also be provided for adjusting the opening stop between the stop position and the release position. The opening stop can, for example, be supported on the rail body as a slider which, in the stop position, projects in front of the longitudinal narrow surface of the rail body and, in the release position, is returned in the direction of the longitudinal narrow surface of the rail body, in particular into a cavity of the rail body.

[0016] At least one aperture stopper or stopper assembly may comprise two or more aperture stoppers.

[0017] In particular, opening stops are provided with the same degree of freedom of movement.

[0018] For example, two opening stops can be provided, both of which can be pivoted or deformed about a pivot axis parallel to the guide axis between a release position and an open position. The pivot axes of the opening stops can be coaxial or parallel to one another. The arrangement of several such opening stops, for example along the longitudinal narrow surface of the guide rail, is advantageous if several, for example two, opening stops are provided which are supported independently of one another on the rail body about a pivot axis parallel to the guide axis on the guide axis or longitudinal axis of the guide rail.

[0019] However, it may also be provided that the stop assembly has two or more opening stops with different degrees of freedom of movement relative to the rail body for adjustment between the stop position and the release position. It is particularly advantageous if two opening stops are provided, the pivot axes along which they are deformable or pivotable relative to the rail body being at an angle to each other, in particular at right angles. For example, one opening stop can be pivotable or deformable around a pivot axis parallel to the guide axis, whereas the other opening stop can be pivotable or deformable around a pivot axis that is at an angle to the guide axis, in particular at right angles.

[0020] For the pivotable mounting of the opening stopper on the rail body, for example a swivel bearing with a bearing receptacle or a bearing shaft which is supported in the bearing receptacle is easily possible. The swivel bearing can also be designed, for example, like a piano hinge.

[0021] Furthermore, the opening stopper can also have a number of pivot bearings, in particular whose pivot axes are parallel to one another, for example the sections of the opening stopper can have bearing sections which engage with one another, for example like a piano hinge.

[0022] A film hinge or a flexible connection body which can be deformed with respect to a pivot axis can also be used as a pivot bearing to pivotally support the opening stop with respect to the rail body.

[0023] However, it is also possible for the opening stop to have a pivot section which is pivotable or deformable about a pivot axis parallel to the guide axis between a stop position and a release position.

[0024] For the pivoting adjustment or deformation between the release position and the stop position, it is advantageous for at least one opening stop to have at least one longitudinal recess, in particular a groove. The at least one longitudinal recess in particular runs parallel to the guide axis. It is preferable for several longitudinal recesses to be provided, in particular longitudinal recesses which run parallel to one another. The longitudinal recesses are formed, for example, as longitudinal grooves, notches or the like.

[0025] It is also advantageous if at least one opening stop is flexible or has a flexible section for adjustment between the stop position and the release position. The material of the flexible section or the flexibility of the opening stop as a whole can be, for example, rubber, flexible plastic or the like. In particular, the flexible section is formed as or has a film hinge.

[0026] It is advantageous if the stop assembly has at least one opening stop which can be adjusted by the hand-held tool from a stop position to a release position, in particular against the working direction, when the hand-held tool is guided along the guide rail. This opening stop is pivotally supported on or against the rail body, in particular about a pivot axis which runs transversely, in particular perpendicularly, to the central plane of the rail body. In particular, the opening stop is configured like a locking claw. However, it is advantageous if at least one opening stop is provided which can be adjusted by the hand-held tool from a stop position to a release position, in particular when the hand-held tool moves along the guide rail in the working direction, or even when the hand-held tool does not move relative to the guide rail, in particular when the opening stop is not supported against the action of the forces of the hand-held tool, in particular its protective cover, for example not supported by the workpiece.

[0027] It is furthermore advantageous if at least one opening stop has an actuating ramp, which is provided, for example, for operating the opening stop from a stop position to a release position, for example by means of a hand-held machine tool. Furthermore, the actuating ramp of the opening stop can also be provided for operating the protective cover in the direction of the open position.

[0028] A preferred embodiment provides for the stopper assembly or the at least one aperture stopper to have at least two aperture stops arranged on the rail body in a row arrangement relative to the guide shaft. The aperture stops are arranged one behind the other relative to the guide shaft.

[0029] Advantageously, a first opening stop for opening the protective cover of the hand tool and at least one second opening stop arranged behind the first opening stop in the working direction for holding the protective cover in the open position are provided. When the hand tool is guided along the guide rail, the first opening stop opens the protective cover, which is then held open by the second opening stop acting next in the working direction. In that case, the two opening stops are in the stop position. Naturally, the opening stop is supported on the rail body so as to be movable in the direction of the release position. It should be further noted here that in order to hold the protective cover in the open position, several second opening stops can also be provided, i.e. several opening stops arranged one after the other in a row direction parallel to the guide axis. When at least one second opening stop is adjusted to the release position, the protective cover no longer strikes against it and is therefore movable in the direction of the cover position.

[0030] If two or more opening stops are arranged one behind the other in the row direction, it is advantageous if they are fixedly or movably connected to one another, so that when a first opening stop is adjusted to the release or stop position, the first opening stop carries the second opening stop towards the release or stop position.

[0031] Furthermore, it is advantageous if at least one opening stop of the stop assembly is spring-loaded by a spring assembly in the direction of the stop position, i.e. the spring assembly acts in the direction of the stop position, so that the opening stop is essentially in the stop position for manipulating the protective cover. However, the opening stop can be deflected in the direction of the release position against the spring force of the spring assembly, for example manually or by a hand-held tool, in particular when it is moved against the working direction. It is then advantageous if the stop assembly has a first opening stop which is spring-loaded by a spring assembly in the direction of the stop position and which is fixedly connected or movably coupled with a second opening stop. The second opening stop can thereby be spring-loaded in the direction of the stop position by the spring assembly of the first opening stop.

[0032] It is advantageously provided that the spring force of the spring assembly is smaller than the force of the protective cover of the hand-held tool arranged to work with the guide rail, in particular the spring force and / or the force of gravity, which acts in the sense of adjusting the opening stopper to the release position, i.e., if the protective cover is spring-loaded in the direction of the cover position and / or its weight is applied to the opening stopper, for example, the spring force of the spring assembly of the opening stopper is determined such that the opening stopper is deflected in the direction of the release position under the load of the protective cover of the hand-held tool.

[0033] There are various possibilities for the configuration of the spring assembly.

[0034] For example, the spring assembly can comprise a metal spring, in particular a torsion spring, through which in particular an opening stop loaded by the spring assembly is passed by a bearing element, in particular a bearing pin of a bearing, which is adjustable between a stop position and a release position.

[0035] To provide a resilient property or resilient arrangement, the opening stopper may also be elastic. For example, the stopper assembly comprises an opening stopper having a spring-elastic section or made of a spring-elastic material and having its normal position in a stop position and being elastically deflectable and deformable to a release position.

[0036] It is easily possible for the stop assembly to have two or more aperture stops which are loaded into a stop position by separate spring assemblies. The spring assemblies may be of the same construction or may differ from each other. For example, one spring assembly may comprise a metal spring, while the other spring assembly is formed by the elasticity of the aperture stop.

[0037] It can be provided that at least one opening stop can be fixed in the stop position and / or in the release position by a fixing device. The fixing device can comprise, for example, a clamping screw, a holding claw or the like. In particular, it is possible to hold the opening stop permanently in the release position by means of the fixing device, for example for transport of the guide rail, for a specific operation or the like. However, it can also be advantageous to fix in the stop position, i.e. the opening stop can be periodically utilized during use. The fixing device can comprise, in particular, a locking assembly. Naturally, a combination of a spring loading of the opening stop to the stop position or to the release position and an additional fixing device is also possible without problem.

[0038] Furthermore, it is advantageous if the stop assembly has at least one opening stopper to which a counter stopper is assigned, against which the opening stopper strikes when adjusting from the release position to the stop position and / or when a force is applied by the protective cover. The counter stopper is, so to speak, a bearing. For example, when the protective cover strikes the opening stopper when adjusting it from its cover position to its open position, the counter stopper supports the opening stopper. It is advantageous if this opening stopper is spring-loaded in the direction of the stop position by the above-mentioned spring assembly.

[0039] There are many possible configurations for the aperture stop, some of which are described below.

[0040] Advantageously, it can be provided, for example, that the opening stop is formed as a stop finger or stop rod, a locking claw or the like. The opening stop can, for example, have the form of a plate.

[0041] An advantageous concept provides that at least one or more opening stops have an operating surface for operating the opening stop by the workpiece in the direction of the stop position when the guide rail rests on the workpiece. For example, the workpiece operates the opening stop in the direction of the central plane of the guide rail, so that it reaches the stop position. When the guide rail is pulled away from the workpiece, the workpiece no longer operates the opening stop to the stop position, so that the opening stop can reach the release position, in particular the opening stop is automatically in the release position. This embodiment is advantageous in particular in the case of opening stops that are pivotable or deformable between the release position and the stop position around a pivot axis parallel to the guide axis. The operating surface is arranged, for example, next to the rest surface of the guide rail. The operating surface is located in the same plane, in particular as the rest surface of the guide rail, when the opening stop is in the stop position.

[0042] However, it should be noted that it is also possible to envisage that the aperture stop or aperture stop can be manually operated to the stop position and / or release position, i.e. that the aperture stop can be manually adjusted to the stop position. It is also possible to envisage that the aperture stop can only be manually adjusted to the stop position, i.e. the operator can precisely adjust the aperture stop between the stop position and the release position, independently of, for example, the position of the guide rail relative to the workpiece.

[0043] It is furthermore advantageous if the at least one opening stop is subjected to a force in the direction of the release position, for example by being spring-loaded by a spring assembly and / or by a weight force, in particular caused by the own weight of the opening stop, This arrangement is performed in such a way that when the guide rail faces downwards on its resting surface, a weight force acts on the opening stop in the sense of adjusting it from the stop position to the release position.

[0044] It is advantageous if at least one opening stop has an elongated stop body that runs along the longitudinal narrow surface of the guide rail. The stop body consists of or has an elastic and / or flexible material, in particular rubber, elastic plastic or the like. It is particularly advantageous if the elastic or flexible material is provided in the region of the swivel bearing section or the swivel section of the stop body and / or in the region of the free side edge or narrow surface that projects freely in front of the rail body. However, the stop body can also consist of or have a section of metal or a material that is resistant to bending.

[0045] Furthermore, stop bodies having a hinge section, for example a film hinge, are advantageous. In particular, the above-mentioned stop bodies made of elastic or flexible material can have a hinge section or a film hinge.

[0046] Furthermore, an embodiment is preferred in which a row arrangement of a number of stop bodies arranged along the longitudinal narrow surface of the guide rail is provided as the opening stop. That is to say, a row arrangement with at least two opening stops arranged along the longitudinal narrow surface of the guide rail is preferred. The opening stops can have the same material or different materials. For example, one opening stop can be made of metal and the other opening stop can be made of plastic or a flexible material. The opening stops can overlap in the row direction. For example, it is possible for a first opening stop in the working direction to cover or overlap a second opening stop in the working direction with respect to the guide shaft in a covering or overlapping region. In the covering or overlapping region, the two opening stops are in particular fixedly connected to one another. However, it is also possible for the opening stops arranged one after the other with respect to the guide shaft to be completely separate from one another and / or to be movable independently of one another on the rail body.

[0047] The embodiment of the guide rail having a stopper body extending along the longitudinal narrow surface, even in the embodiment as an array of several stopper bodies, for example at least two stopper bodies, advantageously provides for the stopper body to be plate-shaped.

[0048] It is advantageous if the stop assembly has an opening stopper with different stiffness relative to the guide shaft or with sections arranged one behind the other relative to the guide shaft and with different stiffness. For example, the opening stopper is made of different materials relative to the guide shaft, for example metal and plastic. It is further advantageous if the opening stopper has reinforced and non-reinforced sections one behind the other relative to the guide shaft. For example, the opening stopper is made of flexible plastic or rubber and has sections reinforced, for example, by harder plastic material, metal, or the like.

[0049] Furthermore, it is possible for the opening stopper to have at least two opening stoppers arranged one behind the other with respect to the guide shaft and having different stiffnesses. It is preferable if the opening stoppers with different stiffnesses are fixedly connected or joined to one another.

[0050] It is advantageous if the stop assembly comprises an open stopper with a rigid support section extending parallel to the guide axis, the front longitudinal end of which in the working direction rests on the workpiece in such a way that when the front longitudinal end of the support section rests on the workpiece, the rear longitudinal end of the support section, which projects freely in front of the workpiece and is not supported by the workpiece, rests on the workpiece in such a way that it is supported for holding in the stop position. The rear longitudinal section, which is not supported by the workpiece, can thus bias or hold the protective cover of the hand-held machine tool in the open position. In particular, this arrangement is advantageous if the guide rail is arranged to bear obliquely against the rear workpiece surface in the working direction of the workpiece, in which case the longitudinal axis of the rear workpiece surface and the guide axis are not perpendicular.

[0051] That is, it may then happen that the opening stop is free to the rear with respect to the working direction, i.e. is not supported by the workpiece in the direction of the stop position, but must nevertheless remain in the stop position in order to open the protective cover. The support section withstands the forces exerted by the protective cover of the hand-held machine tool and holds it in the open position.

[0052] It is preferred if the support section has at least about 50% of the longitudinal length, in particular at least about 75% and in particular at least about 80% or 90% of the longitudinal length, relative to the guide axis, of the protective cover of the hand-held machine tool intended for use with the guide rail.

[0053] The support section is formed, for example, by a metal reinforcement of the stop body of the aperture stop or has such a reinforcement. It is preferable if, in front of the support section in the working direction, a section of the stop assembly or aperture stop is provided which is deflected relative to the support section in the direction of the release position when a force is applied by the protective cover of the hand-held machine tool, and this deflected section rests on the workpiece and is thus supported in the stop position by the workpiece.

[0054] If the elongated stop body extends along the longitudinal narrow side of the guide rail, a tear-prevention edge, as described below, is advantageous.

[0055] It is advantageous if at least one opening stop has a tear-preventing edge for resting on the workpiece and for preventing the workpiece from being torn at the cutting edge provided in the workpiece by the working tool, the tear-preventing edge and / or the section of the opening stop having the tear-preventing edge rests on the workpiece during the working movement of the guide rail and, as it were, applies a load to its upper surface, which prevents the workpiece from being torn at the cutting edge.

[0056] The anti-tear edge is preferably created in connection with the hand-held machine tool and its working tool when the guide rail is first used. Advantageously, it is provided that at least one opening stop has a cutting edge section provided for cutting by the working tool, which is cut by the working tool when the working tool is guided along the guide rail along the guide axis when the guide rail is first used. That is, the working tool, for example a saw blade, can shorten this cutting edge section to create the anti-tear edge, for example when the cutting edge section is made of plastic or similar other competitive material.

[0057] Furthermore, it is advantageous if the guide rail has an abutment region or a start section. The abutment region is used, for example, to abut the guide rail against a workpiece. If the hand tool is arranged at the abutment region or start section of the guide rail, it is prepared, so to speak, for performing a saw cut or is in a start position. It is preferable if, at the abutment region or start section, the object that manipulates the protective cover does not protrude in front of the longitudinal narrow side of the rail body, so that the protective cover is freely movable between a release position and a cover position when the hand tool is arranged at the abutment region or start section and can be adjusted to the cover position, for example, by a protective cover spring assembly. In particular, no elements of the stop assembly are arranged at the start section or abutment section, i.e., the stop assembly extends over a section of the guide rail that is longitudinal with respect to the guide axis, which is different from the abutment region or start section. It is advantageous if the stop assembly extends along the guide rail, except in the abutment or start region, over the entire length of the guide rail suitable for introducing a saw cut into the workpiece, in particular up to the front longitudinal end in the working direction of the guide rail.

[0058] Advantageously, one or more rear engagement profiles are provided on the guide rail for engaging with a rear engagement profile of the hand tool. The rear engagement profile and the rear engagement profile are complementary to one another. They fit together positively, but in the mutually engaged state have a movement play with respect to the guide shaft. When the rear engagement profiles engage with the rear engagement profile of the hand tool, they are held on the guide rail in a direction normal to the central plane of the guide rail, i.e. the hand tool remains movable along the guide shaft on the guide rail. The guide rail is nevertheless held, so to speak, inseparably on the hand tool. The hand tool is provided with rear engagement profiles that match the rear engagement profiles. For example, the rear engagement profile and the rear engagement profile have a T-shaped, V-shaped configuration, are formed as a dovetail profile or the like, i.e. a very flexible operation is possible with such an arrangement of the guide rail and the hand tool. The guide rail forms, for example, a so-called chop rail. In this embodiment of the invention, the guide rail is particularly short. The longitudinal extent of the guide rail relative to the guide shaft is, for example, three or four times as large as the longitudinal extent of the hand tool.

[0059] It is furthermore advantageous if the guide rail has at least one longitudinal end stop against which the hand tool strikes when moving in the working direction or against the working direction. The hand tool can thus be moved over the guide rail, for example forward in the working direction and / or backward against the working direction. A longitudinal end stop or a number of longitudinal end stops can be provided for a carriage of the guide rail guided in the guide rail, which can be connected to the hand tool. When the hand tool is connected to the carriage, it strikes against the respective longitudinal end stop and thus limits the displacement path of the hand tool relative to the guide rail.

[0060] It is advantageous if the guide rail has a spring-loaded return device for adjusting the hand tool in the working direction in the direction of the rear longitudinal end region of the guide rail. The hand tool is provided with an adjustment device, for example a flexible adjuster, in particular a mounting device for a rope, of the return device. During the working movement, the hand tool is operated from the rear longitudinal end region to the longitudinal end region of the front guide rail in the working direction against the force of the return device. If the operator and / or the workpiece do not exert an adjustment force on the system from the guide rail and the hand tool forward in the working direction, the return device returns the system consisting of the guide rail and the hand tool again to, so to speak, the starting position, in which the hand tool is arranged in the rear longitudinal end region of the guide rail. That is, for example, when the hand-held machine tool is moved away from the workpiece together with the guide rail and the operator holds the hand-held machine tool by its hand grip, the guide rail becomes free from the workpiece, so that the return device can adjust the guide rail relative to the hand-held machine tool, so that the longitudinal end region of the guide rail which is rear in the working direction reaches, so to speak, below the hand-held machine tool.

[0061] The invention further relates to a system comprising a guide rail and a handheld tool of the above-mentioned kind, in particular designed for using the guide rail as the handheld tool of the system, or as a pendulum hood saw, the handheld tool being in particular a pendulum hood saw.

[0062] The protective cover of the handheld machine tool is spring-loaded in the direction of its cover position, in particular by a protective cover spring assembly. By means of one or more opening stops, the protective cover, for example a pendulum hood, can be adjusted from the cover position to an open position. Advantageously, in the system, it is provided that the operating force of the protective cover, with which the protective cover acts on the at least one opening stop in the open position, is greater than the holding force of the at least one opening stop in the direction of the stop position, when the opening stop protrudes freely and / or unsupported and / or without support in front of the rail body. The holding force is provided, for example, by the spring elasticity of the stop body of the opening stop and / or by a spring assembly which loads the opening stop into the stop position. The operating force includes, for example, the force of the weight of the protective cover and / or the spring force of the protective cover spring assembly.

[0063] An embodiment of the present invention will now be described with reference to the drawings. [Brief description of the drawings]

[0064] [Figure 1] FIG. 1 is a perspective view of a guide rail with a handheld machine tool prior to cutting into a workpiece. [Diagram 2] FIG. 2 is a diagram of the assembly according to FIG. 1, with the tool of the hand-held machine tool already cutting into the workpiece. [Diagram 3] FIG. 3 is a perspective view of the handheld machine tool and guide rails during removal from the workpiece. [Figure 4] FIG. 4 is a bottom view of the guide rail and machine tool according to the preceding figures. [Figure 4a] FIG. 4a is an enlarged view of detail D1 of FIG. [Diagram 5] FIG. 5 is a perspective view from above of the hand-held machine tool and guide rails according to the preceding figures. [Figure 6] FIG. 6 shows a front detailed view of a modified guide rail with an opening stopper according to a first variant. [Figure 7]FIG. 7 is a detailed view similar to FIG. 6 but including guide rails and aperture stops according to a second variant. [Figure 8] FIG. 8 is a detailed view of a guide rail similar to FIGS. 6 and 7, but with an aperture stop according to a third variant. [Figure 9] FIG. 9 is a top perspective view of another guide rail. [Figure 10] FIG. 10 is a view of the guide rail according to FIG. 9 from obliquely below. [Figure 11] FIG. 11 is an enlarged view of the stopper assembly of the guide rail, detail D2 of FIG. [Figure 12] FIG. 12 is a front view of the guide rail according to FIGS. 9 to 11, taken from the front approximately in the direction of arrow P1 in FIG. [Figure 13] FIG. 13 is a diagram of detail D3 according to FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0065] The handheld machine tool 20 is formed, for example, as a sawing machine 21. It comprises a drive assembly 22 with a drive motor 23. The drive motor 23 drives, directly or via a transmission (not shown), a tool holder 24 in which a working tool 25, for example a saw blade 26, is removably attached. The tool holder 24 rotates about a rotation axis D.

[0066] To supply energy to the handheld machine tool 20, an energy supply device 27 is used, which may for example comprise an energy store 28, in particular a battery pack or the like. However, a power cable 29 for connection to a power supply network, for example an AC voltage network, is also possible without problem, as is shown in the variant according to FIG. 2. It is also possible for the handheld machine tool 20 to be a hybrid machine, which can be operated not only via a mobile energy store but also from a power supply network. In any case, the high mobility of the handheld machine tool is advantageous, especially when the power cable 29 is not required, as it can be easily brought closer to and away from the workpiece W.

[0067] The working tool 25 is, for example, a saw blade. The handheld tool 20 is, for example, a circular saw, a plunge saw or the like. It is particularly advantageous if the handheld tool 20 is a pendulum hood saw. Instead of the saw blade 26, other cutting tools can also be used, for example a cutting disk or the like.

[0068] When the working tool 25 is not used to cut into a workpiece W, it is advantageous for the working tool 25 to be covered by a protective cover 30, i.e. the drive motor 23 can still be operated and thus drive the working tool 25, so that teeth or other similar cutting means arranged on its periphery can injure the user.

[0069] The drive assembly 22 is arranged on the guide plate 40 and can be guided directly on the workpiece W, but also on the guide rail 60. The drive assembly 22 is arranged on the upper side 41 of the guide plate 40, while the lower side 42 opposite to the upper side 41 is provided for being guided along the workpiece W or along the guide rail 60. The working tool 25 projects towards the lower side 42 in front of a longitudinal side 43 of the guide plate 40 during the working operation of the hand tool 20, i.e. for cutting into the workpiece W, and can thereby cut into the workpiece W there. The drive assembly 22, on the other hand, extends from a longitudinal side 44 to the opposite longitudinal side 44, but advantageously does not project in front of this longitudinal side 44.

[0070] In the region of the hand tool remote from the upper surface 41, a fixed upper hood 34 is provided in which the section of the tool 25 projecting in front of the upper surface 41 of the guide plate 40 is accommodated. In the hood 34, in particular, a suction connection 35 for connecting a suction hose, a dust bag or the like is arranged.

[0071] A section of the tool 25 which possibly projects in front of the underside 42 can be covered by a movable protective cover 30. The protective cover 30 is adjustable between a covering position A (FIG. 1) covering the working tool 25 and an open position O (FIG. 2) completely or partially releasing the working tool 25 and is correspondingly adjustably movably supported relative to the fixed upper hood or the fixed upper protective cover. The protective cover 30 can be pivoted about a pivot axis DH parallel or coaxial to the rotation axis D of the tool cradle 24, i.e. between the covering position A and the open position O.

[0072] The protective cover 30 is formed, for example, as a hood, in particular as a pendulum hood. A stop 32 is arranged on the hood 31 or on the protective cover 30 in the working direction AR, i.e. in the direction towards the front lateral side 46 of the guide plate 40, in the front region of the hood 31. Advantageously, on this stop 32 or as the stop 32, there is a splitting wedge 33 which can bite into a saw slit or saw cut S which is sawed into the workpiece W by the working tool 25.

[0073] The protective cover 30 is loaded into its covered position A by a protective cover spring assembly 36. The protective cover spring assembly 36, which is only diagrammatically shown in the drawings, may comprise, for example, one or more springs, one or more operating arms, operating joints, or the like, for operating the protective cover 30 or the pendulum hood 31 from an open position to a covered position.

[0074] The hand tool 20 has a handgrip 38 which is held by the operator in an area remote from the guide plate 40. A switch 39, for example a push button switch, is arranged on the handgrip 38 for switching the drive motor 23 on and off, in particular also for adjusting its speed.

[0075] The drive assembly 22 is depth-adjustable relative to the guide plate 40. For example, the drive assembly 22 is pivotally supported on the guide plate 40 by a depth-adjusting bearing 37. The depth-adjusting bearing 37 allows the drive assembly 22 to pivot about a depth-adjusting axis T. The depth-adjusting bearing 37 is preferably arranged at the front in the working direction, i.e. near the front lateral side 46 of the guide plate 40, in which case the hand tool is a typical pendulum hood saw. However, the invention can also be easily realized in the case of saws in which the depth-adjusting bearing is arranged, for example, at the rear in the working direction, or in which the drive assembly or the saw assembly are linearly guided relative to the guide plate.

[0076] Furthermore, the drive assembly 22 can be pivoted about the bevel-cutting axis G by means of the bevel-cutting bearings 47. In the typical working operation shown in the drawings, the working tool 25 projects at a right angle in front of the underside 42. However, by means of the bevel-cutting bearings 47, it is also possible to adjust the bevel-cutting angle, for example up to 45° or 47°. The rear bevel-cutting bearings 47 are arranged in the region of the rear lateral sides 45 of the guide plate, the front bevel-cutting bearings being arranged below the drive assembly 22 and closer to the front lateral side 46 of the guide plate.

[0077] Guide rail 60 is used to make precise, straight saw cuts S in workpiece W. Hand machine tool 20 and guide rail 60 may remain permanently coupled to one another during work operations, forming system 10.

[0078] The guide rail 60 has a substantially rigid rail body 61 made of metal or hard plastic, which can be placed on a base, for example a workpiece upper surface WO of a workpiece W, by means of a mounting surface 62. The mounting surface 62 and the guide surface 63 are located on opposite sides of the central plane MI of the rail body 61.

[0079] The guide surface 63 serves to guide the hand tool 20. The guide surface 63 is provided with a guide contour 70 which is formed and arranged to engage with a guide counter contour 50 of the hand tool 20. The guide contour 70 comprises, for example, longitudinal ribs which run parallel to the longitudinal narrow faces 64, 65 of the rail body 61 along the guide axis F. During the working operation, when the hand tool 20 rests on the guide surface 63, the guide contour 70 engages with the guide counter contour 50 which is formed, for example, as a U-shaped groove running in the longitudinal direction of the guide plate 40. This allows the working tool 25 to pass by the rail body 61 and thus by the longitudinal narrow face 64 of the guide rail 60 and to project in front of the rest surface 62, to cut into the workpiece W and to make saw cuts S which run parallel to the guide axis F.

[0080] The handheld machine tool 20 can be guided back and forth between a rear lateral narrow surface 66 and a front lateral narrow surface 67 of the guide rail 60 or rail body 61 .

[0081] In order for the guide rail 60 and the hand tool 20 to remain connected to one another when the system 10 is lifted off the workpiece W, see for example FIG. 3 , the guide rail 60 is provided with a rear engagement contour 72 and the hand tool, e.g. the guide plate 40, is provided with a rear engagement counter contour 52 for engaging with the rear engagement contour 72 of the guide rail 60. The rear engagement contour 72 is provided on a guide projection 71. The guide projection 71 extends over the longitudinal length of the guide rail 60 relative to the guide axis F.

[0082] The rear engagement profile 72 has a longitudinal leg 73 which projects in front of the guide surface 63, from which a transverse leg 74 projects. The longitudinal leg 73 and the transverse leg 74 form a T-shaped configuration which complementarily matches with a T-shaped guide receptacle 51 which provides the rear engagement profile 52 of the hand tool 20. The rear engagement profile 52 has a longitudinal leg 53 for the longitudinal leg 73 and a lateral receptacle 54 or transverse leg into which the transverse leg 74 of the rear engagement profile 72 can engage. When the rear engagement profile 72 and the rear engagement profile 52 engage with each other, the hand tool 20 is held on the guide rail 60 in the normal direction N of the guide surface 63 or central plane MI, i.e. when the hand tool 20 is lifted off the workpiece W, it takes the guide rail 60 with it.

[0083] Between the rear lateral narrow surface 66 and the longitudinal narrow surface 65 extends a slope 66A which opens the view to the workpiece W, for example.

[0084] An operator of the system 10 manually guides the handheld machine tool 20, for example, forward along the guide axis F in a working direction AR, with the guide rail 60 being supported against the workpiece W, for example by means of stops 68, 69.

[0085] A return device 75 acts in the opposite direction, i.e. opposite to the working direction AR. The return device 75 is designed to adjust the relative position of the hand tool 20 and the guide rail 60 in order to adjust the hand tool 20 to the abutment area 66B when the hand tool 20, in particular the guide rail 60, is unloaded, i.e. for example lifted from the workpiece W. The return device 75 has a flexible tension element 76, for example a belt, which is fixedly attached to the guide rail 60 and connected with a carriage 77. The carriage 77 is guided along a guide axis F in a guide 78 of the guide rail 60, for example a guide rib, guide groove or the like. The tension element 76 is loaded by a spring 79 to bias the carriage 77 in the working direction AR in the direction of the rear lateral side or lateral narrow side 66.

[0086] The hand tool 20 has a holding contour 48 on the saw table or guide plate 40, for example for connection with a carriage 77. The carriage 77 is provided with, for example, a locking receptacle or the like, which can engage with the holding contour 48. In order to limit the movement path of the hand tool 20 relative to the guide rail 60, stops 78A, 78B for the carriage 77 are provided, for example in the longitudinal end regions of the guide 78 in the region of the front and rear lateral narrow faces 67, 66.

[0087] The guide rail 60 can abut against the workpiece W in various angular positions. For adjusting the respective angular positions, stops 68, 69 are provided which protrude in front of the support surface 62. The stop 68 is arranged stationary in the region of the longitudinal narrow surface 65. The longitudinal stop 69 is arranged on the opposite longitudinal narrow surface 64 so as to be adjustable between a number of longitudinal positions relative to the guide axis F. The stops 68, 69 are, for example, formed as stop bodies which protrude in front of the support surface 62, so that the guide rail 60 can abut against the stops 68, 69 on their lateral surfaces relative to the workpiece upper surface WO.

[0088] If the stops 68, 69 have the same longitudinal position relative to the guide axis F, then for example a saw cut S can be sawed into the workpiece W which is perpendicular to the rear workpiece surface WH. The guide rail 60 then assumes for example an angular position WP1.

[0089] However, other angular positions are also possible, for example the angular positions WP2 and WP3. For this purpose, the stop 69 can be adjusted relative to the longitudinal narrow surface 64, for example to the positions P1, P2 and P3. For example, several holding receptions for the longitudinal stop 69 can be provided. In particular, however, a guide 69A is provided, in which the longitudinal stop 69 can be displaced. By means of a clamping screw 69B, the longitudinal stop 69 can be fixed, for example, in position relative to the guide 69A, in particular can be tightened here. The guide 69A is formed, for example, as a holding groove or reception groove.

[0090] The angular position WP1 is located, for example, between the angular positions WP3 shown in Fig. 4. In each of the angular positions WP1 to WP3, the front section 67B of the guide rail 60 is supported on the workpiece surface WO, whereas the abutment area 66B freely projects in front of the rear workpiece surface WH.

[0091] In the rear abutment area 66B, the protective cover 30 assumes in particular its closed, i.e. covered, position A, see for example FIG. 1 or FIG. 4. In that case, the working tool 25 is covered by the upper hood 34 and the pendulum hood 31, and the operator is protected from injuries. If a saw cut S is to be performed, however, the operator guides the hand tool in the working direction AR towards the front section 67B of the guide rail 60, and the protective cover 30 is adjusted from the covering position A to the open position O. For example, the stop 32 of the protective cover 30 can strike against the rear workpiece surface WH, whereby the pendulum hood 31 or the protective cover 30 is manipulated from the covering position A in the direction of the open position O, swivelled in the opening direction and held in the open position O during a further movement of the hand tool 20 in the working direction AR.

[0092] To open and / or hold the protective cover 30 open in the open position O, stopper assemblies 80A, 80B, 80C, 80D, 80E, also referred to quite generally as stopper assemblies 80, are provided. The stopper assemblies 80 comprise opening stops 81, 91, which for differentiation are given additional letters A-E corresponding to the stopper assemblies 80A-80E, respectively. The opening stops 81, 91 are adjustable between a stop position AS, provided for opening or holding the protective cover 30 in the open position O, and a release position FS, in which the protective cover 30 can reach or remain in the cover position A from the open position.

[0093] The stopper assembly 80A includes aperture stoppers 81A and 91A.

[0094] The opening stop 81A is arranged between the opening stop 91A and the abutment area 66B and serves, so to speak, to open the protective cover 30. The opening stop 81A is adjustable between a stop position AS, in which it projects parallel to the central plane MI of the rail body 61 in front of the longitudinal narrow surface 65 of the rail body 61, and a release position FS, in which it is adjusted towards the longitudinal narrow surface 65 until it can no longer engage with the protective cover 30, in particular its stop 32, or is returned behind it. The release position FS is shown in Fig. 4a by dashed lines.

[0095] The opening stopper 81A includes a stopper body 82A supported by a swivel bearing 83A so as to be rotatable about a swivel axis SQ. The swivel bearing 83A includes, for example, a bearing body 84A in which the stopper body 82 is rotatably supported. The bearing body 84A, for example a bearing shaft member, is held or housed in a bearing housing 85A, and its longitudinal end facing the abutment region 66B provides the longitudinal stopper 68. The bearing housing 85A is, for example, screwed to the rail body 61 or attached thereto.

[0096] The stop body 82A is formed, for example, like a claw. The stop body 82A has an actuating ramp 86A, which is arranged to deflect the stop body 82A and thus actuate the opening stop 81A in the direction of the release position FS when it is moved by the hand tool 20 against the working direction AR. The opening stop 81A is biased in the direction of its stop position AS by a spring assembly 87A. That is to say, when the opening stop 81A is not subject to external influences, the spring assembly 87A adjusts the stop body 82A in the direction of the stop position AS, in which the stop body strikes, for example, against a counter stop 89A of the bearing housing 85A. In this position, the stop 32 of the protective cover 30 can in any case strike against an actuating surface 88A of the stop body 82A opposite the actuating ramp 86A, whereby it is adjusted from the cover position A in the direction of the open position O.

[0097] The stopper body 82A is made, for example, of metal or in any case of a harder material than the stopper body 92A of the opening stopper 91A. The stopper body 92A consists, for example, of rubber, plastic or other similar soft material. The stopper body 92A is formed, for example, as a flat, plate-like object or plate.

[0098] The opening stop 91A extends along the longitudinal narrow surface 65 between the opening stop 81A and the front transverse narrow surface 67 or the front longitudinal end of the guide rail 60 in the working direction AR. The protective cover 30 or its stop 32 slides along the upper surface 95A of the opening stop 91 resting on the workpiece W on its movement path between the opening stop 81. The working tool 25, i.e. the saw blade 26, then moves alongside a side edge 96A of the opening stop 91A, which is the so-called free side edge of the guide rail 60 during the working operation. For example, the side edge 96A rests on the workpiece surface WO, and in addition a force is exerted by the protective cover 30 in the direction of the workpiece surface WO, so that the plate or stop body 92A rests flat on the workpiece surface WO, and this side edge can be used as a tear protection.

[0099] The opening stop 91A is arranged on the rail body 61 so as to be pivotable about a pivot axis SF extending parallel to the guide axis F and is therefore adjustable between a stop position AS in which the plate or stop body 92A is substantially aligned with the rail body 61, i.e. projects significantly in front of the longitudinal narrow surface 65 of the rail body 61, and a release position FS in which the stop body 92A is pivoted, for example, towards the lower surface or the rest surface 62 of the guide rail 60, so that, for example, its upper surface 95A is oriented at an angle, in particular approximately perpendicularly, to the guide surface 63. For pivotable support of the stop body 92A, a pivot bearing 93 is provided which comprises a number of bearing elements 94A arranged one behind the other in a row parallel to the guide axis F. The bearing elements 94A are, for example, screwed or riveted to the rail body 61, for example by means of screws 94S. The bearing elements 94A can be provided, for example, by flexible projections of the stop body 92A.

[0100] A lower surface 98A opposite to the upper surface 95A of the stopper body 92 can be used as an operating surface 98 for operating the opening stopper 91A from the release position FS to the stop position AS. In other words, when the lower surface 97A rests on the workpiece surface WO, the opening stopper 91A is supported at the stop position AS and cannot avoid the force applied by the protective cover 30 in the direction of the release position FS.

[0101] However, when the guide rail 60 is lifted from the workpiece surface WO, this support of the opening stopper 91A by the workpiece W is lost, i.e., the stopper body 92 pivots about the pivot axis SF from the stop position AS to the release position FS, whereby the pendulum hood 91 or the protective cover 30 is no longer supported in its open position O, so that the weight of the protective cover 30 and the protective cover spring assembly 36 automatically adjust the protective cover 30 in the direction of the cover position A, thereby protecting the operator from injury.

[0102] It is possible for the bearing elements 94A to have spring-elastic properties, whereby they are, for example, spring assemblies 97A which essentially bias the stop body 92A in the direction of the stop position AS, or at least act with a certain force in the direction of the stop position AS, but this force is smaller than the force exerted by the protective cover 30 on the upper face 95A if the stop body 92 is not supported on its operating face 98 or on the lower face 98A.

[0103] For the stop assembly 80B, a somewhat simpler concept has been chosen: the stop assembly 80B has only a single aperture stop 91B, which is similar to the aperture stop 91A and likewise has an elongated stop body 92B which extends over substantially the entire length of the guide rail 60 between the abutment area 66B, from which the longitudinal narrow surface 65 protrudes freely, and the front longitudinal end of the guide rail 60 in the working direction AR, i.e. towards the front lateral narrow surface 67.

[0104] The opening stopper 91B is rotatably supported by means of a swivel bearing 93B between a stop position AS in which the stopper body 92B is substantially aligned with the faces 62, 63 of the rail body 61 and a release position FS in which the plate body or stopper body 92B with its free side edge 96B does not protrude too far in front of the longitudinal narrow face 65 of the rail body 61, so that the protective cover 30 of the hand-held machine tool 20 can pass alongside the opening stopper 91A from its open position O to reach the cover position A or remain in the cover position A.

[0105] The stopper body 92B has an operating surface 98 on its lower surface 98B, which is adapted to rest on and is supported by the workpiece surface WO, thereby causing the opening stopper 91B to be supported at the stop position AS and to remain in this position.

[0106] The rotary bearing 93B is formed by recesses 94B in an upper surface 95B and a lower surface 97B of the stopper body 92B. The recesses 94B are formed as longitudinal grooves extending parallel to the guide axis F, for example.

[0107] The recess 94B is disposed between a pivot section 92B1 of the stopper body 92B, which is pivotable between a release position FS and a stop position AS, and an attachment section 99B for attachment to the rail body 61.

[0108] The mounting section 99B of the stop body 92B is received in a receiving portion 65B of the rail body 61. The receiving portion 65B is formed, for example, as a receiving groove extending along the longitudinal narrow surface 65. The receiving groove or receiving portion 65B is in particular approximately keyhole-shaped in cross section. In any case, it is preferred if the stop body 92B is held in the receiving portion 65B in a form-locking manner parallel to the central plane MI with the force component K1.

[0109] For example, the opening 65C of the receiving part 65B is narrower in cross section towards the longitudinal narrow surface 65 than the bottom area facing away therefrom or the receiving area 65D of the receiving part 65B, into which, for example, the raised rear engagement section 99B1 of the mounting section 99B engages. The mounting section 99B can thus be inserted from the transverse narrow surface 66 or 67 into the receiving part 65B along an insertion axis parallel to the guide axis F, but is held in the receiving part 65B in a form-locking and / or non-detachable manner transversely to this insertion axis. However, other fastening measures, such as gluing, welding or the like, can be provided without problem in order to hold the stop body 92B in the receiving part 65B, for example materially. It is also possible without problem to fasten with one or more clamping bodies, screws or the like, which are screwed or introduced, in particular from one of the faces 62 or 63, in the direction of the receiving part 65B.

[0110] The stop body 92B consists in particular of a material that can be cut by the working tool 25 or the saw blade 26, for example plastic, rubber or the like. For example, when the hand tool 20 is guided along the guide rail 60, it is thus possible that, during the first saw cut, the working tool 25 cuts off the cutting edge section 96S from the stop body 92B, thereby forming a side edge 96B. This side edge then has an optimal length transversely to the guide axis F for the subsequent sawing action, so that it always extends, for example, next to and close to the working tool 25, thus providing a tear protection that avoids or in any case significantly reduces tearing of the workpiece W in the area of ​​the saw cut S.

[0111] The stop body 92C of the stop assembly 80C used as the opening stop 91C for the protective cover 30 corresponds substantially to the stop body 92B, i.e. has a recess 94C for providing a swivel bearing 93C, which corresponds for example to the recess 94B, and a side edge 96C which can be used as a tear protection. The stop body 92C extends along the longitudinal narrow surface 65, in particular up to the abutment region 66B. Furthermore, i.e. the section of the stop body with the recess 94C has spring-elastic properties and is thus a spring assembly 97C, so that the stop position AS is, so to speak, the normal position of the stop body 92C.

[0112] To mount the stopper body 92C on the rail body 61, a connecting section 99C is used, which is connected to the swivel section 92C1 of the stopper body 92C by means of a swivel bearing 93C. The connecting section 99C engages in a fir-tree structured receiving section 65E of the rail body 61, which extends along the longitudinal narrow surface 65 like a longitudinal groove. The receiving section 65E has a receiving section 65F, into which an elongated connecting pin 99C1, which has a fir-tree shape in cross section, of the connecting section 99C engages. The receiving section 65E has a through opening towards the longitudinal narrow surface 65, in front of which project rear engaging projections 65G, which are located opposite each other in the sense of a narrow section of the receiving section 65E, which engage in a rear engaging receiving section 99C2 of the connecting section 99C, which is, for example, groove-shaped and extends parallel to the guide axis F.

[0113] The opening stop 91D of the stop assembly 80D has a stop body 92D which extends along the longitudinal narrow surface 65 up to the abutment region 66B. The opening stop 91D is held in a form-locking manner on the rail body 61, i.e. in its receiving part 65B, and has a connecting section 99B which engages in the receiving part 65B, as described in connection with the stop body 92B. Furthermore, the stop body 92D also has recesses 94D located opposite each other, which correspond to the recesses 94B, 94C, and thus form a swivel bearing 93D, by means of which the opening stop 91D can be swiveled about a swivel axis SF parallel to the guide axis F between the stop position AS and the release position FS. In the region of the recess 94D, the stop body 92D is elastic in that its normal position is the stop position AS, whereby the swivel bearing 93D forms a spring assembly 97D. The section of the stop body 92D having the longitudinal rib 99D forms a pivot section 92D1 which is pivotable between a release position FS and a stop position AS.

[0114] If the underside 98D forming the operating surface 98 is not supported, e.g. if the guide rail 60 is lifted off the workpiece W, the protective cover 30 allows the opening stop 91D to be adjusted from the stop position AS towards the release position FS. The stop body 92D has a number of longitudinal ribs 99D which run parallel to the guide axis F or parallel to the longitudinal narrow surface 65 of the rail body 61, whereby the stop body 92D has a greater rigidity parallel to the guide axis F. However, it is also possible that the groove-like intermediate spaces between the longitudinal ribs 99D enable the stop body 92D to have a number of pivotable sections, whose pivot axes SF1, SF2, SF3 run parallel to the guide axis F, and intermediate spaces or longitudinal grooves are formed between the longitudinal ribs 99D.

[0115] However, in the stop assembly according to the invention, it is also possible that a number of opening stops are arranged side by side in a row arrangement parallel to the guide shaft, and that each of the opening stops is individually movable and / or is supported movably relative to the immediately adjacent opening stop. For example, instead of a single-piece or one-piece stop body 92D, a row arrangement of a number of stop bodies 92D1, 92D2, 92D3 and optionally further stop bodies not visible in the partial view of FIG. 8 can be provided, which each form an opening stop and can be individually adjusted between the release position FS and the stop position AS, as already explained in connection with the opening stop 91D. That is, the protective cover 30 can push each of the stop bodies 92D1, 92D2, 92D3 from the stop position AS to the release position FS when the respective stop body is not supported with its operating surface 98 on a base, for example on the workpiece surface WO.

[0116] The stopper assembly 80E has opening stops 81E, 91E which are arranged one behind the other in a row arrangement with respect to a row axis parallel to the guide axis F or the longitudinal narrow surface 65. Unlike the stopper bodies 92D1, 92D2, 92D3, the stopper bodies 82E, 92E of the opening stops 81E, 91E are fixedly connected to one another and are thereby simultaneously swivelable between a stop position AS and a release position FS by means of respective swivel bearings 83E, 93E with coaxial pivot axes SF which are parallel to the guide axis F.

[0117] The opening stopper 81E is rotatably supported by a bearing body 84E of the slewing bearing 83E. The bearing body 84E is held by a bearing housing 85E which is attached to the mounting surface 62 of the rail body 61, for example, by screw fastening, adhesive, or the like, in the same manner as the bearing housing 85A. The bearing body 84E can be disposed rotatably or fixedly in the bearing housing 85E.

[0118] A protrusion having a sleeve-shaped or tubular bearing receptacle 84E1 protrudes from the stopper body 82E, which is, for example, plate-shaped, and the bearing receptacle is penetrated by the bearing body 84E. The bearing body 84E is formed, for example, as a bearing pin or a bearing shaft.

[0119] The stop body 92E is connected to the rail body 61 by a connecting section 99E. The connecting section 99E is attached to the rail body 61, for example by means of an adhesive layer 99E1 of an adhesive tape or the like. Screw fastening or other similar mountings are possible without problems. The swivel bearing 93E is equipped with a film hinge 94E, by means of which the swivel section 92E1 of the stop body 92E can swivel between a stop position AS and a release position FS, see FIG. 12.

[0120] When the stopper assembly 80E is placed on the workpiece W, particularly on the workpiece surface WO, the operating surface 88E, which is located on the surface facing the mounting surface 62 of the rail body 61, particularly on the underside of the stopper body 82E, operates the opening stopper 81E in the direction of the stop position.

[0121] Furthermore, the operating surface 98 provided on or formed by the underside 98E of the stop body 92E also acts in the sense of adjusting or holding the opening stopper 91E in the stop position AS when it rests on the workpiece W.

[0122] In addition, the stopper body 82E, and therefore the opening stopper 81E, is subjected to a force by the spring assembly 87E in the direction of the stop position AS. Since the opening stoppers 91E and 81E are fixedly connected to each other, the spring assembly 87E also acts on the stopper body 92E or the opening stopper 91E in the direction of the stop position AS.

[0123] The spring assembly 87E comprises, for example, a torsion spring 87E1 which is supported on the one hand on the rail body 61, for example the bearing housing 85E, and on the other hand on the stop body 82E. The spring assembly 87E is further provided for operating the stop body 92E or the opening stop 91E into the stop position AS. That is to say, the stop body 82E projects with a support section 89E towards the stop body 92E and is connected, for example glued and / or connected by a rivet or other similar connection 89E1, with the stop body 92E in the region of the support section 89E.

[0124] The stop body 92E consists of a particularly soft material, for example rubber or plastic, For example, a first saw cut can form a side edge 96E which serves as a tear protection.

[0125] The stop body 92E is reinforced in the region of the support section 89E by the stop body 82E and is in any case so rigid that the opening stop 91E cannot be deformed by the protective cover 30 of the hand tool 20 in the region of the support section 89E. That is, as shown in FIG. 10, when the front longitudinal end region 89E2 is supported on the workpiece W, the combination of the opening stops 81E, 91E is supported in the stop position AS. In this situation, in which the guide rail 60 freely projects in its starting region in front of the workpiece W (e.g. in front of the workpiece surface WH), not only the opening stop 81E but also the opening stop 91E remains in the stop position AS when the hand tool 20 is moved forward in the working direction AR from the abutment region 66B of the guide rail 60. The working tool 25 then moves along the side edge 96E of the stop body 92E also in the region of the support section 89E, which can therefore be tear-proof.

[0126] However, when the system 10 is lifted off the workpiece W, the force F O exerted by, for example, the force of the weight of the pendulum hood 31 and / or the force of the protective cover spring assembly 36 acting on the upper surface 95E of the aperture stop 91E by the protective cover 30 is sufficient to adjust the aperture stops 81E and 91E toward the released position FS, i.e., the force F O is greater than the force of the spring assembly 87E.

[0127] The operating ramp 86E of the opening stop 81E facilitates the adjustment of the protective cover 30 in the direction of the open position O. The operating ramp 86E is formed, for example, by a flanged or deformed section of the stop body 82E. The operating ramp 86E faces towards the abutment area 66B.

[0128] It should be mentioned here that the stop body 82E is in particular made of metal and is in particular designed as a stamped and formed part.

[0129] A slidable or linearly movable support of the opening stop of the stop assembly is also possible. For example, the stop assembly 80F has an opening stop 81F, for example a slider or stop body 82F, which is linearly displaceable in a slide bearing 83F on the rail body 61 between a release position FS shown in dashed lines and a stop position AS shown in solid lines. It is possible that the stop body 82F is fixable, in particular lockable, in the stop position AS and / or the release position FS by means of a stop or other similar fixing device 89F. A spring assembly, not shown, can adjust the opening stop 81F, for example, to the stop position AS.

Claims

1. A guide rail for guiding a hand-held machine tool (20), in particular a sawing machine (21), the hand-held machine tool (20) having a drive motor (23), a working tool (25) driven by the drive motor (23), and a protective cover (30) for the working tool (25) adjustable between an open position (O) for releasing the working tool (25), in particular a saw blade (26), and a cover position (A) for at least partially covering the working tool (25), the rail body (61) of the guide rail (60) being centered. On opposite sides of the plane (MI), it has a rest surface (62) for resting on a base, in particular on a workpiece (W), and a guide surface (63) for guiding the hand-held tool (20), on which guide contours (50) for guiding the hand-held tool (20) along a guide axis (F) are arranged, so that the working tool (25) of the hand-held tool (20) is guided parallel to the guide axis (F) and is guided in the working direction next to the longitudinal narrow surface (65) of the rail body (61). The handheld machine tool (20) can cut into the workpiece (W) in a direction (AR) along the guide axis (F), and the guide rail (60) has a stopper assembly (80) including at least one opening stopper (81, 91) for adjusting the protective cover (30) to the open position (O) when the handheld machine tool (20) moves along the guide axis (F). and a release position (FS) provided for releasing the protective cover (30) in order to adjust it in the direction of the cover position (A), and wherein when in the stop position (AS), the opening stopper (81, 91) protrudes in front of the longitudinal narrow surface (65) of the rail body (61) more in a direction component parallel to the central plane (MI) of the rail body (61) than when in the release position (FS).

2. 2. The guide rail according to claim 1, wherein the at least one opening stop (81, 91) is displaceable between the stop position (AS) and the release position (FS) and / or is pivotable relative to the rail body (61) about at least one pivot axis (SQ, SF), which pivot axis (SQ, SF) extends parallel to the guide axis (F) or obliquely or transversely, in particular perpendicularly, to the guide axis (F).

3. A guide rail according to claim 1 or 2, characterized in that the stop assembly (80) comprises at least two aperture stops (81, 91).

4. 3. The guide rail according to claim 2, characterized in that the at least two opening stops (81, 91) are supported on the rail body (61) with the same or different degrees of freedom of movement relative to the rail body (61) and / or are deformable relative to the rail body (61) for adjustment between the release position (FS) and the stop position (AS).

5. 5. The guide rail according to claim 2, 3 or 4, characterized in that the at least two opening stops (81, 91) are arranged on the rail body (61) one behind the other in a row arrangement relative to the guide axis (F).

6. 6. The guide rail according to claim 5, characterized in that the opening stops (81, 91) are fixedly or movably connected to one another.

7. The at least one opening stopper (81, 91) is rotatable between the stop position (AS) and the release position (FS) around a pivot axis (SF) parallel to the guide axis (F) by means of a pivot bearing (83, 93), or comprises an opening stopper (81, 91) having a pivot section (92B1) rotatable or deformable between the stop position (AS) and the release position (FS) around a pivot axis (SF) parallel to the guide axis (F), or is formed by an opening stopper (81, 91).

8. The guide rail according to any one of claims 1 to 7, characterized in that for pivotal adjustment or deformation between the release position (FS) and the stop position (AS), the at least one opening stop (81, 91) has a longitudinal recess, in particular a groove and / or a film hinge (94E) and / or is flexible.

9. The guide rail according to any one of claims 1 to 8, characterized in that the stopper assembly (80) has at least one open stopper (81, 91) adjustable from the stop position (AS) to the release position (FS) by the hand-held machine tool (20) when the hand-held machine tool is guided by the guide rail (60).

10. The guide rail according to any one of claims 1 to 9, characterized in that the at least one opening stop (81, 91) has an operating ramp (86A, 86E), in particular for operating by the hand tool (20) and / or for operating the protective cover (30).

11. The guide rail according to any one of claims 1 to 10, characterized in that the stop assembly (80) has at least one opening stop (81, 91) spring-loaded towards the stop position (AS) by a spring assembly (87, 97).

12. The guide rail according to claim 11, characterized in that the spring force of the spring assembly (87, 97) of the opening stop (81, 91) is smaller than the force, in particular the spring force and / or the weight force, of the protective cover (30) of the hand-held machine tool (20) arranged to operate together with the guide rail, which acts in the sense of adjusting the opening stop (81, 91) to the release position (FS).

13. A guide rail as described in any one of claims 1 to 12, characterized in that at least one opening stopper (81, 91) has an operating surface (98) for operating the opening stopper (81, 91) in the direction of the stop position (AS) by the workpiece (W) when the guide rail (60) is placed on the workpiece (W).

14. The guide rail according to any one of claims 1 to 13, characterized in that the at least one opening stop (81, 91) comprises an elongated stop body (82, 92) extending along the longitudinal narrow surface (65) of the guide rail (60) and / or a row arrangement of a plurality of stop bodies (82, 92) arranged along the longitudinal narrow surface (65) of the guide rail (60).

15. 15. Guide rail according to claim 14, characterized in that the stop body (82, 92) consists of an elastic and / or flexible material, in particular rubber or plastic, and / or has a hinge section, in particular a film hinge (94E).

16. The guide rail according to any one of claims 1 to 15, characterized in that the stopper assembly (80) has an opening stopper (81, 91) having sections of different rigidity arranged in tandem with respect to the guide axis (F), and / or at least two opening stoppers (81, 91) having different rigidity arranged in tandem with respect to the guide axis (F).

17. The guide rail according to any one of claims 1 to 16, characterized in that the stopper assembly (80) has an opening stopper (81, 91) including a rigid support section (89E) extending parallel to the guide axis (F), and a front longitudinal end of the opening stopper in the working direction (AR) is arranged to rest on the workpiece (W) such that, when the front longitudinal end of the support section (89E) rests on the workpiece (W), the rear longitudinal end of the support section (89E), which protrudes freely in front of the workpiece (W) and is not supported by the workpiece (W), is supported to hold it in the stop position (AS).

18. The guide rail according to any one of claims 1 to 17, characterized in that the at least one opening stop (81, 91) has a tear prevention edge at the cutting edge introduced into the workpiece (W) by the working tool (25) for resting on the workpiece (W) and for preventing tearing of the workpiece (W).

19. The guide rail according to any one of claims 1 to 18, characterized in that the at least one opening stopper (81, 91) has a blade section (96S) arranged to be cut off by the working tool (25), the blade section being cut off by the working tool (25) when the working tool (25) is guided along the guide rail (60) along the guide axis (F) upon first use of the guide rail (60).

20. A guide rail as described in any one of claims 1 to 19, characterized in that the protective cover (30) has an abutment area (66B) where an object operating the protective cover (30) does not protrude in front of the longitudinal narrow surface (65) of the rail body (61), thereby the protective cover (30) is freely movable between the release position (FS) and the cover position (A) when the handheld machine tool (20) is positioned in the abutment area (66B).

21. 21. The guide rail according to claim 1, characterized in that it has at least one rear engagement contour (72) for engaging with a rear engagement mating contour (52) of the hand-held tool (20), whereby the hand-held tool (20) is held on the guide rail (60) in a normal direction (N) to the central plane (MI) of the guide rail (60), and / or has at least one longitudinal end stop (78A, 78B) relative to the guide axis (F) against which the hand-held tool (20) strikes in case of a movement in the working direction (AR) or against the working direction (AR).

22. The guide rail according to any one of claims 1 to 21, characterized in that it has a spring-loaded return device (75) for adjusting the hand tool (20) in the direction of a rear longitudinal end region of the guide rail (60) in the working direction (AR).

23. A system comprising a guide rail according to any one of the preceding claims and a hand-held machine tool (20), in particular a pendulum hood saw.

24. 24. The system of claim 23, wherein the protective cover (30) is spring loaded toward its cover position (A) by a protective cover spring assembly (36).

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