CN1636100A - Anchor - Google Patents

Abstract

An anchor [10] for imbedding into a concrete slab and to which fittings may be secured. The anchor has a housing with an access opening [15] and a base opening, a cover [60] adapted to normally close off the base opening, a fastener carriage [30], a fastener [40] held by the carriage, a carriage support [50] and a cap [20]. The fastener carriage, fastener, cap and carriage support may rotate as a unit relative to the housing and the fastener may move across the housing.

Description

Anchor

The present invention relates to an anchor that can be placed into a concrete slab and to which various accessories can be fixed.

The invention will be described by way of example for its use in a concrete wall, it being understood that this is by way of example only and that the panels may be floors or ceilings.

Background technique

In a concrete building structure, the wall panels are cast in place or prefabricated, and for the building to be erected, fabrication elements such as steel framing etc. are attached to the walls.

The various anchors are placed into the slab by positioning and fixing them relative to the reinforcement and then pouring concrete to make the slab. One side of the anchor is placed against the formwork for the panel structure. Once the panels are cured, the formwork can be removed to expose the anchors so that the fittings can be secured to the anchors.

It is important that the anchors be placed exactly in the desired position in the resulting panel. Some anchors can be adjusted in such a way that slight deviations in alignment and positioning can be tolerated.

Contents of the invention

It is an object of the present invention to provide an anchor which forms a viable alternative to the anchors described above.

According to one aspect of the present invention, an anchor is provided for being inserted into a concrete slab and to which fittings can be secured, the anchor having:

a shell with an access opening and bottom mouth;

- a cover suitable for normally closing off the bottom opening of the shell;

a fastener rack;

a fastener retained by the frame;

A bracket and a cap whereby the fastener holder, fastener, cap and bracket are integrally rotatable relative to the housing, and furthermore the fastener and fastener holder are movable from one end of the housing to the other.

The shell may be of any desired peripheral shape and may have at least one peripheral wall, although this is not critical. The shell may be circumferential and the peripheral wall may be substantially cylindrical.

The shell has a bottom opening and an access opening spaced from the bottom opening. Preferably, the access opening is formed by a return wall projecting inwardly from the or each peripheral wall. When the surrounding wall is circular, the revolving wall may have a circular appearance.

The shell may have at least one anchoring portion for enabling the shell to be secured to a reinforcement which normally forms part of the panel into which the anchor is placed. Preferably there are two anchor portions. The anchoring portion may consist of an overhanging ear of the shell. Where the shell has a peripheral wall, the ears may project from the wall at radially disposed locations on the wall.

The anchor includes a cover. The lid typically seals the bottom opening of the shell. The cover is preferably formed as a separate part from the shell and fitted to the shell so as to block off the bottom opening. Where the peripheral wall of the shell is circular, the cover is also circular and has an overhanging flange positionable relative to the shell. Preferably, the flange is received within the shell against the inner surface of the peripheral wall of the shell. The cover preferably has two concentric cylindrical flanges receiving the housing wall therebetween.

The cover has a main plate from which the flange extends. If desired, the plate may have one or more spacers which are set inwardly from the innermost flange. The effect of this or each spacer is to slightly separate the support from the main board of the cover.

The anchor has a cap disposed opposite the shell and adjacent the access opening. A cap is disposed within the shell and partially blocks the access opening. Preferably, the cap has a lip disposed opposite the lower edge of the wall of revolution.

The cap preferably has a slot extending partially across the cap. The slots can have arched ends, but do not have to.

The anchor has a frame which may have spaced upright opposed side flanges for receiving the fastener frame and for guiding movement of the frame from one end of the frame to the other. Preferably, the bracket is generally U-shaped and has a wall extending between opposed side flanges. The wall may have a groove.

The fastener frame may be generally U-shaped with a connecting wall and opposed side arms. The outside of the side arm may be shaped or have a flat outer profile for engaging the opposing flange of the bracket. Thus, the fastener holder is free to move along the frame, but it is held against rotation relative to the frame by opposing flanges on the frame.

The bracket may be provided by a male flange extending from the cap and towards the fastener holder. In this embodiment the bracket is integrally formed with the cap. Preferably, there are two diametrically opposed flanges.

In an alternative embodiment, the support is formed as a separate piece.

The bracket when configured as a separate piece has retainers for engaging the cap to ensure that the cap, bracket and fastener holder held therebetween can rotate as one within the housing. The positioning elements are present as claws protruding from the flange on the bracket, and the cap is provided with positioning recesses for receiving the claws. If desired, the claws can protrude from the cap, and the flange can also have locating recesses.

The fastener is received by the fastener frame and held against rotation relative to the fastener frame. In a preferred embodiment, the fastener is a nut. In that embodiment, the fastener holder has a hole through which a bolt projects to mate with the nut. Alternatively, the fastener may be a body having a head of the bolt that is received between the side walls of the fastener frame and held against rotation, and a body of the bolt that extends outwardly through a hole in the frame. bolts.

Description of drawings

A specific preferred embodiment of the anchor of the present invention will now be described by way of example with reference to the accompanying drawings, in which

Figure 1 is a perspective view of an anchor according to one embodiment of the present invention;

Figure 2 is an exploded view of the anchor of Figure 1;

Fig. 3 is an exploded view of an anchor according to another embodiment of the present invention.

Detailed ways

The anchor 10 has a cylindrical body 12 with an annular inwardly turned wall 11 defining an entry opening 15 . The opposite end of the body is open. The anchor portions 13 , 14 protrude from two diametrically opposite locations of the body 12 .

The anchor 10 includes a cap 20 , a fastener holder 30 , a fastener 40 , a bracket 50 and a cover 60 .

Cap 20 has bosses 23 , 24 received in opening 15 . A flange or lip 26 extends around the portions 23 , 24 and prevents the passage of the cap 20 through the opening 15 . A channel 22 exists between the parts 23 , 24 and a groove 21 is provided in the channel 22 .

Cap 20 has a notch 25 formed on lip 26 . There are four such notches arranged in pairs on opposite sides of the cap.

Fastener frame 30 is U-shaped and has a connecting wall with a hole 31 extending therethrough.

The frame 30 has legs 33, 34 with outer flats. The frame 30 has a cavity for receiving the fastener 40 which prevents the fastener 40 from rotating relative to the frame 30 .

The frame 50 has side flanges 52, 53 extending from a connecting wall 57 so that the frame is free to move along the frame 50 but cannot rotate relative thereto. A groove 51 is formed in wall 57 .

Bracket 50 has claws 54, 55 projecting from flanges 52, 53 and engaging notches 25 in cap 20 so that cap 20 holds frame 30 and fastener 40 between it and bracket 50 in an assembled state. It forms a whole that can freely rotate in the main body 12.

A cover 60 closes the body 12 once the other parts are in place in the body. The cover has a main plate 62 extending therefrom an upwardly directed circular flange 61 . If desired, plate 62 may have one or more barrier formations formed thereon which function to space the underside of wall 57 from the plate to provide a gap between wall 57 and plate 62 . This makes it possible for the stem of a bolt engaging the fastener 40 to protrude slightly below the wall 57 .

The anchor 70 of FIG. 3 has a cylindrical body 71 with an inwardly facing circumferential wall of revolution 72 defining an entry opening 73 . The opposite end of the body 71 is open. The anchor portions 74 , 75 protrude from two radially opposite positions of the body 71 .

Anchor 70 includes a cap 80 , a fastener holder 90 , a fastener 100 and a cover 110 .

In the embodiment of FIG. 3 , the bracket is integrally formed with the cap 80 and consists of two legs (of which only one is visible) 81 . The fastener holder 90 is received between these legs 81 and is movable relative to the flange through the slot 82 in the cap 80 in the direction of the longitudinal axis.

Cap 80 has outer portions 83 , 84 and a lip 85 extending around portions 83 , 84 . The area beneath the cap 80 between the legs 81 has a groove 86 formed extending between the flanges 81 .

The frame 90 has legs 91 , 92 between which the fastener 100 can be received and held in place against rotation relative to the frame 90 . A hole 93 extends through the frame and provides access to the fastener 100 . The upper surface of the frame 90 has a groove 94 . These grooves 94 are normally disengaged from the grooves 86 so that the frame is free to move in the direction of the grooves 82. Once the frame is in its desired position relative to the cap 80 and a bolt or the like is engaged and tightened with the fastener 100, the frame 90 is pulled into engagement with the cap 80 and held in the desired position when the grooves 86 and 94 engage each other. Achieved.

Opposite the opening 73 , a cover 110 closes off the end of the body 70 . The cap is a plug received in the bottom opening.

In use, the anchor is secured to the rebar by means of tie rods or the like secured to the sections 13, 14 (or 74, 75). The access opening 15 (and 73) can be closed off with cement, and the formwork used when pouring the slab can be set against the wall 11 against the anchors. At this point the concrete can be poured and allowed to harden while the anchors are embedded in the resulting slab. The template can then be removed, as can the cement to reveal the opening 15 (73). A bolt can then be used to attach the fitting to the anchor. The anchors allow for adjustments to ensure that the assembly is positioned in the desired position relative to the panel. The fastener holder is free to move from side to side, and further, the assembly referred to above is adapted to rotate relative to the body 12 (71).

Claims (15)

1. an anchor is used for imbedding a concrete slab, various build-up members can be fixed on the anchor, and this anchor comprises:

One with a shell that enters an opening and an end mouth;

One is fit to the lid of the end mouth of the disconnected shell of envelope usually;

One fastener stock;

One securing member by this clamping;

One support and a cap, fastener stock, securing member, cap and support can be used as one and rotate relative to shell thus, and in addition, securing member and fastener stock can be traversed shell and be moved.

2. anchor as claimed in claim 1, its mesochite are cylindrical.

3. anchor as claimed in claim 1, its mesochite have one and enter opening with end mouth separates.

4. anchor as claimed in claim 3, wherein entering opening and be by a turret wall from the peripheral shape wall convex of shell provides.

5. anchor as claimed in claim 1 has an anchorage part from the shell evagination at least.

6. anchor as claimed in claim 3, the Gai Youyi of mouth of the disconnected end of envelope is received within the plug blocking piece formation in the end mouth usually.

7. the cap in the anchor as claimed in claim 1, its mesochite is in abutting connection with entering opening.

8. anchor as claimed in claim 7, wherein cap has lip, and lip is with respect to the location, edge that enters the opening downside.

9. as claim 7 or 8 described anchors, wherein cap has the groove that a part is crossed its extension.

10. anchor as claimed in claim 9, wherein the groove in the cap has the end of arch.

11. anchor as claimed in claim 7 comprises support, provides this support by the opposed flange that separates overhanging below cap.

12. anchor as claimed in claim 11 comprises the groove of going up and extending below the cap between opposed flange.

13. anchor as claimed in claim 1, wherein fastener stock has the opposed leg that separates, and securing member is admitted between leg and is held and can not rotates relative to fastener stock.

14. anchor as claimed in claim 13, wherein fastener stock has the upper surface of a with groove.

15. anchor as claimed in claim 14 comprises the hole of passing the fastener stock upper surface.

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