• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Plaster straightening bar (1), with elongated ramp (2), . which forms an underside of the plaster straightening lath (1), ° and is delimited by two longitudinal edges, one of which is marked as a departure edge (4), and the second is marked as a combination edge (5), and with a handle (8), . extending in the longitudinal direction of the plaster straightening lath (1), ° fixed between the two longitudinal edges, ° and comprising two gripping edges (12), which are substantially parallel to the two longitudinal edges of the ramp (2) and spaced above the ramp (2) run, characterized in that the exit edge (4) has a first material thickness, and the combination edge (5) has a second material thickness which is greater than the first material thickness of the exit edge (4), and that the combination edge (5) adjacent grip edges (12) are staggered from the combination edge (5) by a distance ("D").
    公开号:NL2027586A
    申请号:NL2027586
    申请日:2021-02-18
    公开日:2021-09-16
    发明作者:Gräbel Udo
    申请人:Udo Graebel；
    IPC主号:
    专利说明:

    P34979NLOO/TRE Title: Plaster straightening lath The invention relates to a plaster straightening lath according to the preamble of claim 1.
    Generic plaster straightening bars are known from practice. They are also called ramps, ha-profiles or h-profiles, H-profiles, trapezoidal profiles, system construction cutting laths or straightening laths. Its cross-sectional shape corresponds to the lowercase letter "h", with the continuous, longer web of this lowercase letter corresponding to the ramp and the corner portion of this lowercase letter corresponding to the handle. The handle is therefore arranged near one longitudinal edge of the ramp, while the other longitudinal edge of the ramp, which is further away from the handle, forms the so-called ramp, which determines the surface design of the processed plaster or plaster mass and which is therefore possibly straight, but can also be, for example, rectangular, triangular or trapezoidal toothed.
    In practice, the second longitudinal edge of the ramp opposite the ramp is used differently, as a result of which it is referred to as a combination edge in the context of this proposal and to distinguish it from the ramp: on the one hand, it can also be used to influence the surface of the processed wall material, ie for the plaster or filler compound applied to the wall. In particular if the exit edge is serrated, the rectilinear combination edge can be used to provide a correspondingly smooth wall surface, without requiring a tool change, i.e. without a second tool such as, for example, the use of a second plaster straightening lath. However, the combination edge is also used to guide a cutting blade, for example to cut a plasterboard in plaster system construction. It is known to manufacture the generic gypsum guide slats as an aluminum extrusion profile. The longitudinal edge opposite the exit edge and the free grip edge opposite them can be provided with a bead for increasing the bending stiffness. Due to the curved cross-sectional profile of the bead, the actual edge comprises a significantly smaller thickness than the bead. The aim of the innovation is to improve a generic plaster straight edge so that it can be handled as fatigue-free as possible during use and used in a way that a trouble-free, rapid work progress is achievable.
    This object is achieved by a plaster straightening lath with the features of claim 1. Advantageous embodiments are described in the subclaims. In other words, the innovation proposes that the ramp has a smaller thickness than its opposite longitudinal edge of the ramp. Because it cannot be ruled out that the combination edge is accidentally cut with the knife, depending on the angle of attack of the knife blade, notches can form there. For this reason, the cut-off edge is not used as a knife guide if it is not serrated, but straight, because it must remain undamaged and allow the production of a smooth plaster or plaster surface. If the combination edge is still accidentally notched with a serrated exit edge, then the combination edge can no longer be used to provide a smooth plaster or plaster surface, so that a more laborious way of working is required, namely in the form of a tool change , when you have to switch between the grip straightening bar with a serrated exit edge and a second plaster straightening slat with a smooth exit edge. To distinguish the plaster straightening lath proposed from known plaster straightening laths, for example, it can be referred to as "gypsum straightening lath combi Q4". In terms of surface quality requirements for interior plaster, exterior plaster and dun plaster, "Q4" meets the highest of these requirements. The proposed plaster straightening bar is designed to meet these highest requirements. It allows for greater accuracy due to its greater stability and can be used on both sides, with the extra thin or "sharp" cut-off edge on the one hand and the precise, dimensionally stable combination edge on the other. For example, plaster with the required Q4 in terms of flatness can be manufactured with considerably fewer processing steps, since a more precise evenness of the surface is already achieved when the plaster is stripped for the first time. Because, as suggested, the combination edge is thicker than the finishing edge, the pressure of a knife blade is distributed over a larger area, so that the chance of making an incision in the combination edge is considerably reduced. As a result, the combination edge remains intact for longer and can therefore help to avoid tool changes and support smooth work progress for longer. For example, the combination edge may be approximately 5 mm high, while the exit edge may be approximately 1 mm high.
    Furthermore, in contrast to the geometry of the said lowercase letter "h", care has been taken that the grip edge closest to the combination edge is not flat with the combination edge, but according to the invention just at a certain distance from the combination edge is offset. This makes it easier to guide a blade along the combination edge. Depending on the design of the blade, it can for instance comprise a relatively bulky, voluminous housing, for instance to accommodate replacement blades. If with an H-profile the free grip edge runs exactly over the combination edge, such a voluminous knife must necessarily be placed obliquely on the combination edge. Moreover, the free gripping edge forms an obstacle to the ability to grip the knife, or requires an even more oblique orientation of the knife. Due to the proposed offset between the combination edge and the adjacent gripping edge, the problems described are avoided and the knife can be handled as uncomplicated as possible. Depending on the personal preference of the user, a knife position is even supported, whereby the knife can be guided not only exactly perpendicular to the ramp, or obliquely outwards, but also obliquely inwards, towards the handle, and along the combination edge. This offset is preferably at least 5 mm and preferably more than 10 mm, for example about 15 mm.
    In the known h-profiles, the handle has an approximately L-shaped cross-section, i.e. a single side leg. Deviating from this, it can advantageously be provided that the handle comprises two side legs, which likewise run approximately in a V-shape, i.e. are spaced a greater distance from each other with increasing distance from the ramp. In connection with these two side legs, which converge towards the ramp, the top of the handle can be rectilinear or curved. In any case, the user can grip the handle like a convex grip in an ergonomically favorable manner, thereby supporting a safer grip and accurate guidance of the plaster straightening slat on the one hand, and on the other hand supporting effortless handling of the plaster straightening slat. During use, this supports rapid work progress. For example, the handle at its widest point may be about 5 to 7 cm wide, especially about 6 cm, and then taper downwardly to about half or a third of this width, e.g. about 2 cm.
    Advantageously, the handle may comprise a closed cross-sectional contour. This prevents material residues from accumulating and drying out, which could increase the weight of the plaster straightener undesirably and make work more difficult. Due to the closed outer surfaces, the handle can also be easily cleaned and kept free of dirt.
    The handle can advantageously be designed as a hollow profile. This makes it possible to use a profile that extends over the entire length of the plaster straightening lath, so that,
    Depending on the preferences of the different users, the plaster straightening bar can be gripped and maintained at any point along its length. In addition, the design as a hollow profile produces the above-mentioned closed cross-sectional contour with the advantages described. Finally, the hollow profile design ensures that the handle is as light as possible compared to a handle with a full material cross section.
    In contrast to the known h-profiles, it can advantageously be provided that the ramp is not only designed as a free-standing plate, but forms a wall of a hollow profile. This creates the possibility of guaranteeing a high bending stiffness of the ramp at a relatively low weight, because the wall thickness with a hollow profile can be greatly reduced compared to manufacturing a ramp in the form of a simple plate with a full material cross-section. with the same bending stiffness. In particular, this results in a high bending stiffness of the ramp, so that comparably more precise surfaces can be achieved in a relatively shorter time with a comparably less effort.
    It can be provided here that the hollow profile, of which the ramp forms a wall, extends from the two longitudinal edges to a base which is arranged at a distance above the ramp and to which the handle connects. As opposed to providing only a single hollow chamber in the cross-section of the plaster straightening bar, this base divides the at least one hollow chamber from the handle of the at least one hollow chamber to which the ramp adjoins.
    For reasons of material and thus weight savings, it is possible to provide only a single hollow chamber in the handle. It may further be advantageous that the ramp only adjoins a hollow chamber. In particular when the plaster straightening lath is manufactured from an extrusion profile, for instance of aluminum, it cannot be ruled out that where some ridges of such an extrusion profile adjoin each other, irregularities arise on the outside of the profile body, for instance in the shape. of so-called zinc traces. In order to avoid such irregularities on the outer surface of the ramp which come into contact with the plaster or putty mass, the ramp preferably adjoins only a single hollow chamber.
    The plaster straightening bar can advantageously be designed as a hollow profile with several chambers. Compared to providing a single hollow chamber within the entire outer circumference of the plaster straightening slat, the dimensional stability of the plaster straightening slat can be improved if the cross-section of the plaster straightening slat is divided into at least two hollow chambers by ridges.
    For example, exactly two hollow chambers can be provided, which are separated from each other in the above-mentioned manner, one of which is located in the handle and the other adjoins the ramp. In this way a favorable compromise is achieved between a high form-retention on the one hand and a low weight on the other.
    The said cavities can advantageously be closed to the outside, so that the ingress of working material or contamination is avoided. When, for example, the entire plaster straightening lath is designed as an extrusion profile, it can be closed at both ends, for example with welded aluminum caps, or for example with plastic caps, the anchoring or clamping parts of which each protrude into a hollow space of the plaster straightening lath and clamp there. are held by clamps and/or glued.
    Advantageously, the exit edge can be toothed in a manner known per se. As a result, with the same plaster straightening lath, either smooth or striped surfaces can be provided, depending on whether the toothed exit edge or the smooth combination edge is used.
    In order to be able to hold the plaster straightening bar firmly and to guide it accurately, the handle can be provided with a surface profiling that improves the grip. In particular, if the surface profiling does not only comprise recesses that are circumferentially rimmed, but is precisely designed as grooves with free ends, contaminants or adhesions can be removed without any problems. Due to the particularly easy cleaning of the surface profiling, however, alternatively provision can also be made to deliberately dispense with surface profiling of the handle. In particular if the handle has an undercut due to its cross-sectional contour, for example is conical, and accordingly offers an ergonomically advantageous grip, the surface profiling can be omitted and, at the same time, an accurate actuation of the plaster straightening lath can be ensured.
    Advantageously, the ramp can be of relatively wide design, so that the usable surface of the plaster straightening lath pointing towards the plaster or plaster mass is greater with the same length of the plaster straightening lath than with conventional plaster straightening laths. When the ramp is placed diagonally against a wall, a wedge-shaped space is created between the wall and the ramp. In accordance with the relatively larger width, this wedge-shaped space is larger, so that more material can be accommodated in this wedge-shaped space, which allows a better progress of the work. For example, the ramp can be wider than 10 cm, in particular between 12 and 15 cm wide, with a width of 13.5 cm representing a good compromise between the possibility of a large material absorption on the one hand and a sufficiently low manageable weight on the other hand, to fatigue-free work.
    An exemplary embodiment of the innovation is explained in more detail below with reference to the purely schematic representation. The drawing shows a plaster straightening lath 1, which is designed as an aluminum extrusion profile. The plaster straightening lath has on the side which is shown in the drawing below and is therefore designated in the context of the present proposal as the underside of the plaster straightening lath, a ramp 2, which forms a wall of a first hollow chamber 3. The ramp 2 is bounded by two longitudinal edges, i.e. by a finishing edge 4 and by an opposite combination edge 5. While the finishing edge 4 has a relatively thin design and runs with a small radius, the combination edge 5 has a thicker design and comprises a flat contact surface 6 that is perpendicular to the ramp 2 runs and is used to guide a cutting blade.
    The hollow chamber 3 runs from the exit edge 4 and the combination edge 5 to a base 7, to which a handle 8 connects at the top. The handle 8 comprises two side legs 9, which converge downwards, i.e. towards the base 7 or in the direction of the ramp 2. The two side legs 9 are connected to each other upwards by a grip plate 10, so that the grip 8 is also designed as a hollow profile and has a second hollow chamber 11 . Purely by way of example, the grip plate 10 is of flat design; deviating from the exemplary embodiment shown, it can also run differently, for instance convex or concavely curved.
    The transition between the side legs 9 and the grip plate 10 forms a respective grip edge 12 on both longitudinal sides of the grip 8. The grip 8 extends in a known manner staggered with respect to the ramp 4 and comprises a relatively larger offset between the ramp. 4 and the adjacent grip edge 12, shown on the left in the drawing.
    In addition, the grip 8 also comprises an offset between the combination edge 5 and the adjacent grip edge 12, shown on the right. The extent of this relatively smaller offset is illustrated in the drawing with the aid of the two vertical auxiliary lines and marked as distance dimension D.
    The gripping edges 12 run in a relatively larger radius and thus offer optimum support for a user's hand. In addition, in the region of this respective radius, the handle comprises a surface profiling 14, which improves the grip of the handle 8, but which, in contrast to the exemplary embodiment shown, can also be omitted in order to make cleaning the plaster straightening lath 1 particularly easy.
    Reference numerals: 1 plaster straightening bar 2 ramp 3 first cavity 4 ramp 5 combination edge 6 contact surface 7 base 8 handle 9 side leg 10 handle plate 11 second cavity 12 handle edge 14 surface profile
    权利要求:
    Claims (10)
    [1]
    1. Plaster straightening bar (1), with elongated ramp (2), 5 . which forms an underside of the plaster straightening lath (1), . and is bounded by two longitudinal edges, one of which is designated as a drop-off edge (4), and the second is designated as a combination edge (5), and with a handle (8), 10 . extending in the longitudinal direction of the plaster straightening lath (1), . is attached between the two longitudinal edges, . and two gripping edges (12), which run substantially parallel to the two longitudinal edges of the ramp (2) and at a distance above the ramp (2), characterized in that the ramp (4) has a first material thickness, and the combination edge (5) comprises a second material thickness which is greater than the first material thickness of the exit edge (4), and that the gripping edges (12) adjacent to the combination edge (5) are staggered by a distance ("D") from the combination edge (5).
    [2]
    Plaster straightener according to Claim 1, characterized in that the handle (8) has two side legs (9), which converge towards the ramp (2).
    [3]
    Plaster straightener according to claim 2, characterized in that the handle (8) has a closed cross-sectional contour.
    [4]
    Plaster straightening lath according to one of the preceding claims, characterized in that the handle (8) is designed as a hollow profile.
    [5]
    Plaster straightening bar according to one of the preceding claims, characterized in that the ramp (2) is designed as a wall of a hollow profile.
    [6]
    Plaster straightener according to claim 5, characterized in that the hollow profile extends from the two longitudinal edges to a base (7), which is arranged at a distance above the ramp (2) and to which the handle (8) connects.
    [7]
    Plaster straightening lath according to claims 4 and 5, characterized in that the plaster straightening lath (1) is designed as a hollow profile with several chambers.
    [8]
    Plaster straightening lath according to one of the preceding claims, characterized in that the plaster straightening lath (1) is designed as a hollow profile with two chambers.
    [9]
    Plaster straightening bar according to one of the preceding claims, characterized in that the edge (4) is toothed.
    [10]
    Plaster straightener according to one of the preceding claims, characterized in that the handle (8) has a surface profile (14).
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
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