AN INSULATING RETAINING RING

Abstract: An insulation retaining ring substantially comprising a disc-shaped member adapted to be pressed against a wall insulation and an interconnected retaining member mountable on a wall tie. Both the hold-down member and the retaining member contain a cut-out for adjustment of the insulation retaining ring to different wall tie diameters. A pivoted joint (3) is provided between the hold-down member (1) and the retaining member (2).

Description: This invention relates to an insulation retaining ring substantially comprising a disc-shaped member adapted to be pressed against a wall insulation and an interconnected retaining member mountable on a wall tie, a cut-out being provided both in the hold-down member and in the retaining member for adjustment of the insulation retaining ring to different wall tie diameters. A similar insulation retaining ring is known from NL-C-162,452. This insulation retaining ring is quite satisfactory if at least the wall tie whereon the retaining ring is placed extends horizontally in bricked-in condition. This is rather an exception than a rule, since the joints of an inside cavity leaf and an external wall are usually not situated at the same level so that the wall tie should be bent downwards or upwards so as to be bricked-in into a joint of the external wall. When bending the wall tie, the insulation retaining ring is pushed over the wall tie at insufficient clamping force and in the direction of the external wall, so that the hold-down member is released at least partly from the wall insulation. In that case, there is no longer a question of a proper holding down of the wall insulation. When there is a proper retaining action of the retaining member on the bent wall tie, also the hold-down member of the insulation retaining ring is bent, so that this partly depresses the wall insulation, thereby producing the so-called "mattress effect" as a result of which the insulation value may considerably decrease. It is an object of the present invention to provide an insulation retaining ring eliminating these drawbacks. According to the present invention, the insulation retaining ring is characterized in that a pivoted joint is disposed between the hold-down member and the retaining member. Preferably, said pivoted joint consists of a diametrically extending rib having a stepped thickness pattern and being mounted transversely to the cut-out, said rib being divided into two retaining fingers adapted to be bent in the principal plane thereof. In bending the wall tie in upward or downward direction, the retaining member thereof can follow the movement of the wall tie via the pivoted joint, independently of the hold-down member of the insulation retaining ring, so that the hold-down member remains pressed in the proper position vertically against the wall insulation. In addition to the two retaining fingers associated with the rib, additional retaining fingers are provided that preferably extend radially and which are movable outwardly, thereby forming the semi-circular ring on which they are fitted and which connects to the diametrical rib, said ring being entirely clear of the hold-down member. The clamping force exerted on the wall tie can be increased in that radially extending retaining arms connect to the free end of the retaining fingers forming the diametrical ring, said arms having a hook, the hooks of the two retaining arms engaging with each other in the closing position. To obtain a proper water evacuation, even in the case of an upwardly bent wall tie, preferably either of the two retaining arms is so long that it extends beyond the circumference of the hold-down member. One embodiment of the insulation ring according to the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is a front view of the insulation retaining ring according to the present invention; Fig. 2 is a cross section on the line II-II of Fig. 1; Fig. 3 is a cross section on the line III-III of Fig. 1; Fig. 4 is a cross section of a detail on the line IV-IV of Fig. 3; Fig. 5 is an elevational view according to Fig. 1, wherein the two retaining arms are in the closing position; Fig. 6 is an elevational view according to Fig. 5, wherein the retaining arms enclose a wall tie of larger diameter; Fig. 7 shows an insulation retaining ring in mounted condition with a downwardly bent wall tie; and Fig. 8 is an elevational view according to Fig. 7 with an upwardly bent wall tie. The insulation retaining ring shown in Figs. 1-4 consists of a conical hold-down member having in its centre a semi-circular cut-out merging into a substantially V-shaped cut-out 16 at the underside of the insulation retaining ring. Within said cut-out 16 there is provided a retaining member 2 adapted to clampingly embrace a cross-sectionally round wall tie. Said retaining member 2 comprises a rib 3 provided transversely to said cut-out 16, said rib being divided into two retaining fingers 4, 5, each being connected at 6 pivotally to the hold-down member 1. Pivot point 6 lies at that location where the thickened foot 15 of the rib merges into the thinner rib portion, as shown in Fig. 4. The two retaining fingers 4, 5 connect to a semi-circular ring 7 to which are connected radially extending retaining fingers 8, 9. The ends of retaining fingers 8, 9 facing away from ring 7 are interconnected to thereby form an enlarged retaining foot 19. Said enlarged retaining foot 19 prevents such outward travel of the retaining fingers 8, 9 that a wall tie may arrive between said two retaining fingers 8, 9 and in that case can no longer be clampingly embraced by the retaining fingers. All retaining fingers 4, 5, 8, 9 are movable in radial direction in their principal plane perpendicular to the plane of drawing for adjustment to wall ties of different thickness. Retaining fingers 8, 9, upon outward displacement, will deform ring 7, as diagrammatically shown in Fig. 6. For increasing the clamping action, the free ends of the retaining fingers 4, 5 connect to retaining arms 10, 12, each provided with a hook 11, 13. Said hooks can engage with each other self-lockingly in the closing position of the insulation retaining ring, in which position a wall tie is firmly embraced by four retaining fingers and the two retaining arms 10, 12, thereby obtaining an optimum sliding resistance. Retaining arm 12 is provided with an extension 14 functioning as water evacuation lug, as will be explained hereinafter. Figs. 7 and 8 show the insulation retaining ring in mounted condition. Hold-down member 1 of the insulation retaining ring abuts on the wall insulation 17. At 20 is shown the central axis of a downwardly bent wall tie, bent through the maximally admissible bending angle of 40°. Retaining member 2 is then rotated relatively to hold-down member 1 about pivot point 6, while water evacuation lug 14 points downwardly into the cavity 19. Water evacuation lug 14 abuts on the external wall 18. The water discharge in the cavity takes place both via the wall tie and via the water evacuation lug 14. Fig. 8 shows the wall tie 20 bent in upward direction or mounted "infiltratingly". The water drops conducted along wall tie 20 in the direction of the insulation retaining ring are discharged via the retaining fingers of the retaining member 2 and the downwardly pointing evacuation lug 14 in the cavity 19, without thereby wetting the wall insulation layer 17. Evacuation lug 14 is so long that this can basically bridge an air gap of 75 mm. If thicker cavities are used, the evacuation lug 14 may be longer.

Claims: An insulation retaining ring substantially comprising a disc-shaped hold-down member adapted to be pressed against a wall insulation and an interconnected retaining member mountable on a wall tie, a cut-out being provided both in the hold-down member and in the retaining member for adjustment of the insulation retaining ring to different wall tie diameters, characterized in that a pivoted joint (3) is provided between the hold-down member (1) and the retaining member (2). An insulation retaining ring as claimed in claim 1, characterized in that the pivoted joint consists of a diametrically extending rib (3) having a stepped thickness pattern and mounted transversely to the cut-out (16), said rib (3) being divided into two retaining fingers (4,5) adapted to be bent in the principal plane thereof. An insulation retaining ring as claimed in claim 2, characterized in that the diametrical rib (3) connects to a semi-circular ring (7), said ring being connected to at least two radially extending retaining fingers (8,9) movable outwardly, thereby deforming the ring (7). An insulation retaining ring as claimed in claims 2, 3, characterized in that the retaining fingers (4,5) forming the diametrical rib (3) are each connected at their free end to a radially extending retaining arm (10,12) provided with a hook (11,13) the hooks of both retaining arms (10,12) engaging with each other self-lockingly in the closing position. An insulation retaining ring as claimed in claim 4, characterized in that one retaining arm (12) projects radially beyond the circumference of the hold-down member (1).

Inventors: VAN DER LIPPE, JOHAN CAREL
Applicants: GEBR. BODEGRAVEN B.V.
Application year: 1987
Main classification: E04B2
IPC codes: E04B1