Stop element for contacting and positioning a formwork

The invention relates to a stop element with a stop for contact of a formwork element on the stop element, an abutment for contact with a fixation element, a bottom support for contact of the stop element on an underlying surface, and a support foot for bracing the stop element on the underlying surface, wherein the support foot has a reinforcement rib.

TECHNICAL FIELD

The invention pertains to a stop element with a stop for contacting a formwork element with the stop element.

PRIOR ART

Such stop elements are typically fixed to an underlying surface, so that formwork walls or the like can then be contacted with the stop element and thereby easily positioned and oriented. For this purpose, stop elements typically have a base with which they rest on the underlying surface, as well as a generally cylindrical peripheral wall that serves as a stop surface for a formwork wall.

A disadvantageous aspect is an insufficient filling of the narrow gap between such a peripheral wall and the formwork wall with liquid concrete.

PRESENTATION OF THE INVENTION

The problem of the invention is to provide a stop element with which an intermediate space between the stop element and a formwork wall can be better filled with liquid concrete.

The problem is solved by a stop element with a stop for contact of a formwork element with the stop element, an abutment for contact with a fixation element, a bottom support for contact of the stop element on an underlying surface, and a support foot for bracing the stop element on the underlying surface, wherein the support foot has a reinforcement rib that projects from the support foot spaced away from the stop and deviates from a center-of-gravity plane that is spanned by the centers of gravity of the abutment, the bottom support, and the support foot.

According to a preferred embodiment, the support foot has a bearing surface for bracing on the underlying surface. It is particularly preferred if the reinforcement rib reaches to the bearing surface.

According to a preferred embodiment, the support foot has two reinforcement ribs projecting from the support foot spaced away from the stop and deviate from the center-of-gravity plane. It is particularly preferred if the two reinforcement ribs project from the support foot on different sides of the center-of-gravity plane.

According to a preferred embodiment, the stop is formed by an end face of a web.

According to another preferred embodiment, the stop is formed by an edge.

According to another preferred embodiment, the stop is formed in a substantially punctiform manner, in particular, by a projecting corner.

According to another preferred embodiment, the stop is formed on the support foot.

According to a preferred embodiment, the support foot has a support rib that projects from the support foot parallel to the center-of-gravity plane.

According to a preferred embodiment, the support rib has a greater thickness than the support foot without the reinforcement rib or ribs.

According to a preferred embodiment, the support foot has a bearing surface for bracing on the underlying surface. It is particularly preferred if the support rib is separated from the bearing surface.

According to a preferred embodiment, the stop element has a bottom element separate from the stop. It is particularly preferred if the bottom element connects the bottom support to the support foot.

According to a preferred embodiment, the bottom element extends up to the reinforcement rib.

According to a preferred embodiment, the bottom element, together with two support feet, forms a semi-channel that can be covered by means of an underlying surface contacting the bottom support and/or a formwork element contacting the stop in order to form a flow channel for a liquid, in particular, liquid concrete.

According to a preferred embodiment, the stop element has stabilization elements that project from the bottom element on the side facing away from the bearing surface and/or the bottom support, wherein recesses, in particular passageways, are left between the stabilization elements.

A stop element10is shown in an oblique view inFIG. 1. The stop element10has several stops20for contacting a formwork element, not shown, with stop element10. The stops20are formed in essentially a punctiform manner on the edges25, in that the stop element tapers down from the stops20in both directions along the edges25, so that the edges25each have an oblique angle that forms the respective stop20. In an embodiment that is not shown, the stops are formed in a substantially linear manner as edges. In other embodiments, not shown, the stops are formed in two dimensions and/or as end faces of webs.

The stop element10further comprises an abutment30for contact with a fixation element, not shown, for example a nail, a screw, a bolt or the like. The abutment30is preferably formed as an annular surface that surrounds a guide35for the fixation element preferably extending all the way through the stop element10. In embodiments that are not shown, the guide is configured as a blind hole or as a groove on an edge of the stop element. In the embodiment shown, the abutment30serves as a contact surface for a head or the like of the fixation element. In additional embodiments that are not shown, the abutment is constructed two-dimensionally or substantially in a linear or punctiform manner and serves as a contact surface for a nail head, a screw head, a bracket or a similar fixation element.

The stop element10further comprises a bottom support40for contact of the stop element on an underlying surface, not shown. The bottom support40is configured as a contact surface of which only a boundary edge is visible inFIG. 1. In embodiments that are not shown, the abutment is constructed substantially in a linear or punctiform manner. The guide30preferably opens into the bottom support40, especially preferably into its center of gravity.

The stop element10further comprises support feet50for bracing the stop element10on the underlying surface, not shown, so that a risk of undesired tipping of the stop element10is reduced. The support feet50have reinforcement ribs60that project from the support foot50spaced away from the respective stop20, due to the webs70, and deviate from the center-of-gravity plane spanned by the centers of gravity of the abutment30, the bottom support40, and the respective support foot50. The center of gravity of the abutment30is situated inFIG. 1in the upper opening of the guide35, whereas the center of gravity of the bottom support is situated in the lower opening of the guide35inFIG. 1. Due to the deviation from the respective center-of-gravity plane, the danger of an undesired lateral buckling of the support feet in certain circumstances is reduced. As is visible inFIG. 1, two reinforcement ribs60project from each support foot50on different sides of the respective center-of-gravity plane.

As can be seen inFIG. 1, the reinforcement ribs60not only project from the support feet50spaced away from the respective stops20, but are in fact spaced away from the stops20in their entirety. According to embodiments that are not shown, one or more reinforcement ribs project from the respective support feet spaced away from the respective stops, but themselves comprise stops for contact with a formwork wall. The support feet then have, for example, an X-shaped cross-section or an X-shaped cross-section extended by a central web. In additional embodiments that are not shown, the reinforcement ribs60shown inFIG. 1are omitted, so that the support feet have a Y-shaped cross-section with reinforcement ribs that point at an angle outward and whose outer edges form or comprise the stops.

The support feet each have a bearing surface80for bracing on the underlying surface. Only boundary edges of the bearing surfaces80can be seen inFIG. 1. The reinforcement ribs60each run up to the bearing surface80of the respective support foot50. In an embodiment that is not shown, however, one or more reinforcement ribs are spaced away from the respective bearing surface.

According to the embodiment shown inFIG. 1, the support feet each have a support rib90that projects from the respective support foot50parallel to and, in particular, inside the center-of-gravity plane. The support ribs90each have a greater thickness than the respective support foot50, the thickness of the support foot50being calculated without its reinforcement ribs. The support ribs90are preferably spaced away from the bearing surfaces80of the respective support feet50. In embodiments that are not shown, the support ribs each have a thickness that is less than or equal to the thickness of the respective support foot and/or extend up to the bearing surface.

The support element further10comprises a bottom element100spaced away from the stops20. The bottom element100connects the bottom support40to the support feet50via a connection sleeve110constructed, in particular, as a cone. The bottom element100extends up to the reinforcement ribs60and forms, together with two respective support feet50, a semi-channel120that can be closed off by means of an underlying surface contacting the bottom support40and/or a formwork element contacting one or more of the adjacent stops20, in order to form a flow channel for a liquid, in particular, liquid concrete. The concrete then flows centrally from the top inFIG. 1towards the stop element10, then flows at an incline downwards through the flow channel and along the formwork wall and finally along the underlying surface into the volume formed between the support ribs90. After hardening of the concrete and removal of the formwork wall, the support element10is completely or almost completely surrounded by concrete and thus no longer recognizable or recognizable only based on the stops20.

The stop element10further comprises stabilization elements130that project from the bottom element100on the side facing away from the bearing surfaces80and the bottom support40, with passages140being left between the stabilization elements130. The passages140are preferably wider than the stabilization elements130and likewise serve to pass a flow of liquid, in particular liquid concrete. The stabilization elements130are also preferably connected to one another by means of connecting webs150, so that their stabilizing effect is increased.

The stop element10is preferably produced from plastic, and particularly preferably as a one-piece injection-molded part. In embodiments that are not shown, on the other hand, the stop element is composed of several parts and/or of a different material such as a metal or an alloy.

A stop element210is shown in a plan view inFIG. 2. The stop element210has several stops220for contacting a formwork element, not shown, with stop element210. The stops220are constructed substantially linearly as edges. The stop element210further comprises an abutment, not shown, for contact with a fixation element, in particular, a nail, a screw, a bolt or the like.

The stop element210further comprises a bottom support240for contact of the stop element on an underlying surface, not shown. The bottom support240is constructed as an annular contact surface, with a guide230for the fixation element opening in the center of this annular contact surface.

The stop element210further comprises support feet250for bracing the stop element210on the underlying surface, not shown, so that a risk of undesired tipping of the stop element210is reduced. The support feet250have reinforcement ribs260that project from the support foot250spaced away from the respective stop220, due to the webs270, and deviate from the center-of-gravity plane spanned by the centers of gravity of the abutment, the bottom support240, and the respective support foot250. The center of gravity of the abutment30is situated inFIG. 2behind the shown opening of the guide235, whereas the center of gravity of the bottom support is situated in the opening of the guide235. As is visible inFIG. 2, two reinforcement ribs260project from each support foot250on different sides of the respective center-of-gravity plane.

The support feet each have a bearing surface280for bracing on the underlying surface. The reinforcement ribs260each extend up to the bearing surface280of the respective support foot250, so that the Y-shaped outline of each of the bearing surfaces280shown inFIG. 2results. According to the embodiment shown inFIG. 2, the support feet each have a support rib290that projects from the respective support250inside the center-of-gravity plane. The support ribs290each have a greater thickness D than the thickness d of the respective support foot250. The support ribs290are preferably spaced away from the bearing surfaces280of the respective support feet250.

The support element further210comprises a bottom element300spaced away from the stops220. The bottom element300connects the bottom support240to the support feet250via a connection sleeve310constructed as a cone. The bottom element300extends up to the reinforcement ribs260and forms, together with two respective support feet250, a semi-channel320that can be closed off by means of an underlying surface contacting the bottom support240and/or a formwork element contacting one or more of the adjacent stops220, in order to form a flow channel for liquid concrete.

A stop element410is shown in an oblique view inFIG. 3. The stop element410has several stops420for contacting a formwork element, not shown, with stop element410. The stops420are formed in essentially a punctiform manner on the edges425, in that the stop element tapers down from the stops420in both directions along the edges425, so that the edges425each have an oblique angle that forms the respective stop420. The stop element410further comprises an abutment, not shown, for contact with a fixation element such as a nail, a screw, a bolt or the like. The stop element410further comprises a bottom support440for contact of the stop element410on an underlying surface, not shown. The bottom support440is constructed as an annular contact surface, with a guide430opening in the center of gravity of this annular contact surface.

The stop element410further comprises support feet450for bracing the stop element410on the underlying surface, not shown, so that a risk of undesired tipping of the stop element410is reduced. The support feet450have reinforcement ribs460that project from the support foot450spaced away from the respective stop420, due to the webs470, and deviate from the center-of-gravity plane spanned by the centers of gravity of the abutment, the bottom support440, and the respective support foot450. Due to the deviation from the respective center-of-gravity plane, the danger of an undesired lateral buckling of the support feet in certain circumstances is reduced. As is visible inFIG. 3, two reinforcement ribs460project from each support foot450on different sides of the respective center-of-gravity plane.

The support feet450each have a bearing surface480for bracing on the underlying surface. The reinforcement ribs460each run up to the bearing surface480of the respective support foot450. According to the embodiment shown inFIG. 3, the support feet450each have a support rib490that projects from the respective support450inside the center-of-gravity plane. The support ribs490each have a greater thickness than the respective support foot450. The support ribs490are preferably spaced away from the bearing surfaces480of the respective support feet450.

The support element further410comprises a bottom element500spaced away from the stops420. The bottom element500connects the bottom support440to the support feet450via a connection sleeve510. The bottom element500extends up to the reinforcement ribs460and forms, together with two respective support feet450, a semi-channel520that can be closed off by means of an underlying surface contacting the bottom support440and/or a formwork element contacting one or more of the adjacent stops420, in order to form a flow channel for liquid concrete.

The stop element410further comprises stabilization elements530that project from the bottom element500on the side facing away from the bearing surfaces480and the bottom support440, with passages540being left between the stabilization elements530. The passages540are preferably wider than the stabilization elements530and likewise serve to pass liquid concrete. The stabilization elements530are also connected to one another by means of connecting webs550, so that their stabilizing effect is increased. Two of the connecting webs560and, with them, an upper edge of the stabilization element570arranged between them are arranged offset towards the side of the bottom support440and the bearing surfaces480relative to the other connecting webs550, in order to allow better accessibility of the guide430for a tool, not shown, such as a setting device, particularly one with a laterally projecting fixation element magazine.

As follows from the figures, a symmetrical shape is preferred for the stop element. The stop elements that are shown each have support feet arranged at angular intervals of 45° around a central guide. In embodiments that are not shown, the stop elements have fewer than eight, for instance, two, three, four, five or six support feet, or more than eight, for example, nine, ten or twelve support feet. The stop elements that are shown each have eight stops arranged at angular intervals of 45° around a central guide; a formwork wall can be placed against a respective stop or two adjacent stop. In embodiments that are not shown, the stop elements have fewer than eight, for instance, two, three, four, five or six stops, or more than eight, for example, nine, ten or twelve stops.

The invention was described with respect to a stop element for formwork walls of concrete formwork. The characteristics of the described embodiment can also be combined as desired with one another inside a single stop element. It is pointed out that the stop element according to the invention is also suited for other purposes.