DE1933217B2 - Holding body to be embedded in concrete for attaching a fastener - Google Patents

Description

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The invention relates to a holding body to be embedded in concrete for attaching a fastening means, which consists of a channel-shaped profile with a central part forming the exposed fastening surface and a diverging one Side parts and consists of an insert that creates a concrete-free space behind the middle part creates.

A known holding body of the type mentioned has a sheet metal profile, in which directly on the middle part connect the level, outwardly sloping side panels. When assembling the known holding body the middle part is backed with an insert made of soft material, in which the fastening means, z. B. a screw, can easily penetrate. The known holding body has the disadvantage that can loosen its anchoring in the concrete. Although the side parts are inclined, the sheet metal profile can can be pulled out of the concrete with comparatively low forces if the adhesion is between first solved the concrete and the sheet metal. A loosening of the holding body occurs in particular then if the parts to be fastened to the concrete surfaces are exposed to greater stresses, initially breaking out the pointed concrete edges, which are laterally connected to the profile middle part, and then gradually loosen the side parts in the concrete. Another disadvantage of the known holding body consists in the fact that it cannot be connected to the insert, or only with greater effort. in the Normally, the holding body and the insert are poured into the concrete in the disconnected state, with particularly careful monitoring is required. because here the liquid concrete easily between the rear of the hall body and the insert can penetrate. To avoid this disadvantage, isi it is already known to connect the Hahekörper with the insert by gluing or other suitable means.

The invention is based on the object of creating a holding body of the type mentioned at the beginning, in which the channel-shaped profile can be connected to the insert in a simple manner and the one special secure anchoring in concrete guaranteed.

This object is achieved according to the invention. that between the middle part on the one hand around the side parts on the other hand, the channel-shaped profile transition parts are provided which are perpendicular to the central part run that from the ends of the side parts foot parts extend outwards and that from the diverging ones Side parts tabs pressed out inwards and bent so far in relation to the side parts sin3T that they the insert, which is held on the upper side by the middle part and the transition parts, in the Support the lower area at the side.

In the case of the holding body according to the invention, the insert is simply inserted into the channel-shaped form at the construction site Depressed profile. The insert is from the middle part and the transition parts as well as from the Side panels pressed out tabs held, so that the channel-shaped profile and the insert in the Assembly can be easily handled as a cohesive unit. In addition, prevent the transition parts the formation of sharp-edged concrete corners, so that the breaking out of Beionstückcn in the vicinity of the cast holding body is prevented will. The tabs and the foot parts formed at the ends of the side parts also serve as a reliable, form-fitting anchoring of the holding body in the concrete.

The holding body according to the invention allows the use of different inserts. Preferably there is the insert made of a U-profile, which is inserted in reverse into the channel-shaped profile. Alternatively the insert can also consist of a plastic block, and preferably from a block of foam plastic.

The invention is illustrated, for example, in the drawing and below in detail by hand described in the drawing. It shows

F i g. 1 shows an exemplary embodiment of the holding body in a perspective view,

F i g. 2 shows an illustration in which the holding bodies in the form of short sections and long strips in FIG a concrete part is cast,

F i g. 3 shows, on an enlarged scale, a view in the direction of arrows 3-3 from FIG. 2 and

FIG. 4 is a view similar to that in FIG. 3, however with another insert, the attachment of corrugated iron to a concrete surface is illustrated.

According to FIG. 1 to 3, the holding body designated by the reference number 10 consists of a channel-shaped one Profile 12 made of metal, in which an insert 14 is embedded. The insert 14 gives the holding body 10 a buoyancy in the not yet solidified concrete; at the same time, the insert 14 creates a concrete-free space created immediately behind the central part 16 of the channel-shaped profile 12, so that on the Haltckorper easily attach fasteners.

The insert 14 can be made of any material! exist, which gives the holding body a corresponding buoyancy and for a pray-free space

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ter the middle part of the holding body ensures. In particular an insert made of a plastic block, preferably made of foamed polystyrene, as it is in F i g. 1 to 3 is shown.

The channel-shaped profile can be made from any suitable sheet metal of appropriate thickness and is in one piece educated. The profile 12 comprises a central part 16 and forming the exposed base surface diverging side parts 18. The side parts 18 each end in a foot part 20, for example with the Bottom of the insert fiucliien can. The Stiten of the channel-shaped profile are immediately adjacent to the middle part, initially a short distance down directed, so that between the central part 16 on the one hand and the side parts 18 on the other hand transition parts 19 develop.

To hold the insert in the holding body 10 tabs 24 are provided from the respective Side panel 18 are pushed out and extend upward and inward to engage the liner 14 u.id to hold them in the channel-shaped profile 12. The tabs 24 are each integral with the respective Side parts connected on a line, which essentially with the transition of the side parts 18 in the corresponding foot parts 20 coincides. The Lasehen 24 are thus arranged so that they can be bent out to the desired To provide flexibility when the insert 14 is inserted into the channel-shaped profile 12. After this these parts are completely nested, the tabs 24 act as barbs so that no separation the parts can be done more.

The insert 14 rests in the inserted state on the middle part 16 of the holding body and is in the upper Part held laterally by the transition parts 19 so that the space below the central part 16 is filled and no concrete can penetrate into the channel-shaped profile. The downward and outward facing side panels 18 together with the outwardly directed foot parts 20 and the inwardly pressed ones Lugs 24 for secure anchoring of the holding body 10 in the solidified concrete.

In addition, the openings 26 in the side parts 18 increase by pushing out the tabs 24 arise, the holding effect of the Haitekörpers in the concrete part 22. The concrete can easily through the The breakthroughs 26 flow through to also the areas to be filled behind the side panels 18.

Because the channel-shaped profile and the insert used are relatively light, the holding body floats in the concrete. and preferably such that the upper Fastening surface of the middle part 16 with the surface of the concrete part 22 is aligned. This is important in order to create a large surface area on which to attach the fasteners can be easily attached. When inserting thread-cutting screws, for example in the holding body is important that immediately behind the mounting surface of the holding body the concrete-free space is available. which offers only a slight resistance to the screw when it is screwed in.

The holding body 10 can be designed in the form of short pieces, as shown on the left in FIG. 2 illustrates or it may be in the form of elongated strips of metal, as shown in FIG. 2 on the right illustrates.

Although inserts 14 in the form of plastic blocks have been found to work well, there are still further possibilities to train the deposit accordingly. According to Figure 4, the insert 14 consists of a U-profile 34, which in the Kariai-shaped profile 12 is used in reverse and in the same way as that in connection with FIG. 1 and 3 described Plastic block is secured in the channel-shaped profile 12. The U-profile 34 forms a concrete-free Space behind the fastening surface of the central part 16. of the fastening means to be attached, for example a self-drilling and thread-cutting screw 28, does not offer any resistance.

According to FIG. 4, corrugated metal sheets 36 can be used without any problems be attached to a concrete part 22 by, for example, a self-drilling and thread-cutting Screw 28 is screwed into the holding body 10. The holding body 10 thus offers the possibility of Parts with different shapes and made of different materials can be attached to a concrete surface.

1 sheet of drawings

Claims (4)

i9 33 Claims: - » 1. Holding body to be poured into concrete for attachment of a fastener, which consists of a Kanaiioniiigen Profile with one exposed mounting surface forming middle part and diverging Seiiciuciien and consists of an insert which a concrete-free one. Space behind the middle part creates, characterized in that between the central part (16) on the one hand and the side parts (18) on the other hand of the channel-shaped profile (12) transition parts (19) are provided which are perpendicular run to the middle part that from the ends of the side parts (18) foot parts (20) to the outside extend and that from the diverging ^ side parts (18) tabs (24) · pushed inwards and are bent so far with respect to the side parts that they have the insert (14, 34), the top of the middle part (16) and the transition parts (19) 2c is held, support laterally in the lower area. 2. Holding body according to claim 1, characterized in that the insert consists of a U-profile (34) exists, which is inserted in reverse into the channel-shaped profile (12). 3. Holding body according to claim 1, characterized in that the insert consists of a plastic block (14) exists. 4. Holding body according to claim 3, characterized in that that the Kurisistoffbiock (14) made of foam plastic consists.