Multi-part wall-tie

Abstract

 The invention relates to a multi-part wall tie comprising an inner wall tie to be received in an inner cavity wall and an outer wall tie to be coupled to the inner wall tie and to be received in an outer cavity wall. The inner wall tie is an assembly comprising a wall plug and a prick tie forming a straight tie pin, or a planar moulded portion to be received in the inner wall and joined or connectable thereto, an essentially straight tie pin projecting from the inner wall, the outer wall tie being mounted substantially in the extended direction onto the tie pin, which outer wall tie comprises a substantially planar tie element which is suitable to be received and tied into the outer cavity wall.

Description

[0001] The invention relates to a multi-part wall tie comprising an inner wall tie to be received in an inner cavity wall and an outer wall tie to be coupled to the inner wall tie and to be received in an outer cavity wall.

[0002] GB-A-2,268,762 discloses a two part wall tie, wherein the wall tie's components have mortise and tenon joints.

[0003] DE-A-37 31 423 and DE-A-34 36 491 disclose multi-part wall ties, wherein the inter-engaging parts have to be received in inner and outer walls, and wherein the wall tie components are substantially formed from bent tube or rod parts.

[0004] NL-A-8601353 discloses a wall tie comprising a wire element which at one end is provided with a planar moulded portion incorporating tie members to be received and tied into an inner cavity wall. However, this is a one-part wall tie.

[0005] A wall tie, after it has been fixed in the inner cavity wall, is also useful for having an insulation layer pushed onto it. In practice, several wall ties are applied for this purpose, and the insulation layer is pushed onto the various wall ties at the same time. The objective is to cause the least possible damage to the insulation layer, in order to avoid spoiling the effectiveness of the insulation.

[0006] The wall ties known from the prior art are not always suitable for applying an insulation layer and even if they are, it is often very difficult to place such an insulation layer.

[0007] The aim of the invention is to provide an alternative form of the multi-part wall tie, offering advantages with respect to the known multi-part wall ties, and affording the best possible chance of placing the insulation layer without damage. Additional advantages of the multi-part wall tie according to the invention will be explained hereinbelow.

[0008] To this end the multi-part wall tie according to the invention is characterized in that the inner wall tie is an assembly comprising a wall plug and a prick tie forming a straight tie pin, or a planar moulded portion to be received in the inner wall and joined or connectable thereto, an essentially straight tie pin projecting from the inner wall, the outer wall tie being mounted substantially in the extended direction onto the tie pin, which outer wall tie comprises a substantially planar tie element which is suitable to be received and tied into the outer cavity wall.

[0009] A first embodiment shows a particularly convenient manner of fastening the outer wall tie to the tie pin, wherein the outer wall tie is for a part U-shaped with the legs extending substantially perpendicular to the tie pin, the legs comprising a first and a second feed-through aperture for the tie pin. It is then possible to effectively ensure mutual fastening by providing the outer wall tie at the side directed toward the tie pin with an essentially flat part extending substantially in the plane of the tie pin and comprising a third feed-through aperture for the tie pin, which together with the first and the second feed-through aperture allows the outer wall tie to clampingly engage the tie pin.

[0010] The fastening of the outer wall tie to the tie pin can be guaranteed in the embodiment which is characterized in that the tie pin is provided with a recess suitable for receiving at least a portion of the outer wall tie.

[0011] Effectively, this can be realized due to the fact that the portion of the outer wall tie between the first or second feed-through aperture and the third feed-through aperture is suitable for being received in the recess of the tie pin.

[0012] It is desirable that the outer wall tie be manufactured from spring steel. The outer wall tie can then simply be shaped by bending such that during assembly, the three feed-through apertures are conveniently aligned for the tie pin to be fed through. As soon as the outer wall tie is thus pushed sufficiently far on to the tie pin, the outer wall tie can be released, so that the engaging three feed-through apertures, through the influence of the released spring steel, effectuate the clamping fit of the outer wall tie on the tie pin.

[0013] The wall tie is preferably equipped such that at the side directed toward the inner cavity wall, the outer wall tie is provided with clamping lugs which can be bent to stand perpendicular to the tie pin. In this manner the outer wall tie integrates the function of clampingly holding the insulation layer to the inner cavity wall. This renders the insulation clamping rings known from the prior art obsolete, resulting in considerable savings in costs.

[0014] In addition, the wall tie according to the invention may be provided with a suitable spigot for condensation in order to avoid that such moisture reaches the cavity wall. The realization thereof will not be elucidated, since this lies within the scope of the person skilled in the art.

[0015] It may further be expedient that the outer wall tie at the side directed toward the outer cavity wall be bendable in stages in order to be able to bring the end of the outer wall tie located at that side to a desired height with regard to the outer cavity wall. This provides a simple manner for tying the inner cavity wall to the outer cavity wall at different heights to each other.

[0016] In a second embodiment of the invention the wall tie is designed such that the tie pin at the side directed toward the outer wall is provided with an enlargement or a recess, and that the outer wall tie is provided with a sleeve-like end suitable for receiving an end of the tie pin, the sleeve-like end being internally provided with clamp members suitable for engaging the enlargement or the recess on the tie pin. In this manner a particularly simple and efficient embodiment of the wall tie is obtained, whose application in practice proves to be very effective.

[0017] It is possible to save costs if the inner wall tie and the outer wall tie are formed similarly, and the tie pin at both its ends is provided with enlargements or recesses, which are designed to engage the clamping members provided internally at the sleeve-like ends of the inner wall tie and the outer wall tie.

[0018] In a further aspect of the invention the wall tie is characterized in that the planar moulded portions of the inner wall tie and the outer wall tie possess tie members which are provided with serrated edges projecting in a circle from the plane of the moulded portions. By this means the influence of gravity of the inner cavity wall portion, respectively the outer cavity wall portion above the wall tie, causes the wall tie to become fixed automatically. It should be noted, that the wall tie according to the invention is particularly suitable to be glued into the inner cavity wall, respectively the outer cavity wall.

[0019] An advantageous embodiment of the wall tie is characterized in that when the inner wall tie is designed as prick tie, the wall plug is designed with an insulation clamp forming an integral part thereof.

[0020] An alternative is, that in the embodiment in which the inner wall tie has a planar moulded portion and joined to, or connectable thereto, a virtually straight tie pin projecting from the inner wall, an insulation clamp can be applied to the tie pin.

[0021] The invention will now be explained in more detail with reference to the drawings, which

in Figs. 1 and 2 show a side and top view respectively of the wall tie in a first embodiment according to the invention;

in Fig. 3 show the wall tie of Fig. 1 and 2 in the assembled state;

in Fig. 4 and 5 show the wall tie in a second embodiment according to the invention in the assembled state and in an assembly drawing;

in Figs 6 and 7 show the wall tie in a third embodiment according to the invention in the assembled state and in an assembly drawing; and

in Figs. 8 and 9 show the wall pin in a fourth embodiment according to the invention in the assembled state and in an assembly drawing.

[0022] Identical reference numbers used in the figures refer to similar parts.

[0023] In the Figs. 1, 2 and 3 the wall tie in a first embodiment according to the invention is generally indicated by reference number 1. This wall tie 1 comprises a tie pin 2 which at an end 3 is provided with a planar moulded portion 4 in which is fitted at least one tie member. In the case shown, the planar moulded portion 4 is provided with four tie members 5. Said tie members 5 are suitable and intended for being received and tied into a cavity wall 6, as shown in Fig. 3. In accordance with the invention, the other end 7 of the tie pin 2 is substantially straight, and to this other end 7 of the tie pin 2 a substantially flat outer wall tie 8 can be attached which is suitable to be received and tied into an outer cavity wall 9 (see Fig. 3). At the side directed toward the outer cavity wall 9, the outer wall tie 8 is preferably provided with a flat tie element 10 comprising at least one tie element. In the case shown (see Fig. 2), the outer wall tie 8 is provided with three such tie elements 11. Figs. 1 and 2 show schematically that the tie elements 5 and 11 are provided with serrated edges 12, projecting in a circle from the plane of the moulded portion 4, respectively the tie element 8.

[0024] Both Fig. 1 and Fig. 3 clearly show that the outer wall tie 8 in said first embodiment is for a part U-shaped with legs 13, 14 extending substantially at right angles to the tie pin 2, and that in the legs 13, 14 a first 15 and a second 16 feed-through aperture for the tie pin 2 is provided. At the side directed toward the tie pin 2, the outer wall tie 8 is provided with an essentially flat part 17 extending substantially in the plane of the tie pin 2 (see Fig. 2), comprising a third feed-through aperture 18 for the tie pin 2 which, in engagement with the first 15 and the second 16 feed-through aperture effectuates a clamping fit between the outer wall tie 8 and the tie pin 2. Preferably the tie pin 2 is also provided with a recess 19, suitable to receive at least a portion of the outer wall tie 8. This is preferably the portion of the outer wall tie 8 between the first 15 or the second 15 feed-through aperture and the third feed-through aperture 18. In the case shown in the figures, this is the portion between the first feed-through aperture 15 and the third feed-through aperture 18.

[0025] The outer wall tie best serves its above-described purpose if it is made from spring steel. Moreover, at the side directed toward the inner cavity wall 6, the outer wall tie 8 is preferably provided with clamping lugs 20 and 21, which can be bent at right angles to the tie pin 2. In Fig. 2, said clamping lugs 20 and 21 are shown in the unbent state, while in Fig. 3, the clamping lugs 20 and 21 are shown in their operative, bent position, that is to say as retainers for an insulation layer 21 applied to the inner cavity wall 6.

[0026] Figs. 1-3 do not further illustrate that at its side directed toward the outer cavity wall 9, the outer wall tie 8 may be bendable in stages in order to bring the end of the outer wall tie 8 located at that side to a desired height with regard to the outer cavity wall 9.

[0027] Referring to Figs. 4 and 5, a second embodiment of the multi-part wall tie according to the invention is shown, in which a separately illustrated tie pin 2, an inner wall tie 3 and an outer wall tie 8 are used, and in which the inner wall tie 3 and the outer wall tie 8 are embodied similarly. In this connection the tie pin 2 is at both ends provided with enlargements 23 or recesses (see also the embodiment according to Figs. 8 and 9, to be discussed below), which are equipped to engage with clamping members 24 and 25 forming part of the inner wall tie 3 and the outer wall tie 8. One thing and another being embodied such that the inner wall tie 3 or the outer wall tie 8 respectively is provided with a sleeve-like end 26, 27, internally provided with clamping members 24, 25 which are equipped to engage the enlargement 23 or the recess (not shown) on the tie pin 2. In this embodiment also, the planar moulded portions 4, 10 of the inner wall tie 3 and the outer wall tie 8 are provided with tie members 5, 11 having serrated edges 12 projecting in a circle from the plane of said moulded portions 4, 10.

[0028] Figs. 6, 7, 8 and 9 finally show two embodiments comprising a so-called prick tie, wherein the inner wall tie 3 is embodied as an assembly of a wall plug 3' and a straight tie pin 2. The wall plug 3' is conveniently provided with an insulation clamp 29 being an integral part of the wall plug 3', for clamping the insulation layer 22 to the inner wall 6.

[0029] In the embodiment shown in the Figs. 6 and 7, the tie pin 2 is provided with an enlargement 23, which in a similar manner as in the embodiment of Figs. 4 and 5, can engage the sleeve-like end 27 which is equipped to receive the end of the tie pin 2 at the side on which the enlargement 23 is located, the sleeve-like end 27 being provided internally with clamping members 25 to engage the enlargement 23 on the tie pin 2. In contrast, the respective ends of the tie pin 2 in the embodiment of the Figs. 8 and 9 have instead of an enlargement a recess 28, for engaging the clamping members 25 which are provided internally at the sleeve-like end 27 of the outer wall tie 8.

[0030] To the person skilled in the art, it will be clear that without difficulty various parts of the embodiments discussed above may be combined to form embodiments which have not been illustrated but which nevertheless are all deemed to be within the scope of the appended claims. Therefore the above explanation must be understood to be non-limiting, thus merely in the light of elucidation for the claims.

[0031] It should further be noted that the various discussed and otherwise feasible applications can be combined with the prior art insulation clip, whose inside diameter must be adapted to the respective application.

[0032] In the embodiment shown in Figs. 4 and 5, such a traditional insulation clip can be clamped over the sleeve part that comprises the clamp members 25.

Claims

1. A multi-part wall tie comprising an inner wall tie (3) to be received in an inner cavity wall and an outer wall tie (8) to be coupled to the inner wall tie and to be received in an outer cavity wall, characterized in that the inner wall tie (3) is an assembly comprising a wall plug (3') and a prick tie forming a straight tie pin (2), or a planar moulded portion (4) to be received in the inner wall and joined or connectable thereto, an essentially straight tie pin (2) projecting from the inner wall, the outer wall tie (8) being mounted substantially in the extended direction onto the tie pin (2), which outer wall tie (8) comprises a substantially planar tie element (10) which is suitable to be received and tied into the outer cavity wall.

2. A wall tie according to claim 1, characterized in that the outer wall tie (8) is for a part U-shaped with the legs (13, 14) extending substantially perpendicular to the tie pin (2), the legs (13, 14) comprising a first (15) and a second (16) feed-through aperture for the tie pin (2).

3. A wall tie according to claim 2, characterized in that the outer wall tie (8) at the side directed toward the tie pin (2) is provided with an essentially flat part extending substantially in the plane of the tie pin and comprising a third feed-through aperture (18) for the tie pin, which together with the first (15) and the second (16) feed-through aperture allows the outer wall tie (8) to clampingly engage the tie pin (2).

4. A wall tie according to claim 2 or 3, characterized in that the tie pin is provided with a recess (19) suitable for receiving at least a portion of the outer wall tie (8).

5. A wall tie according to claim 4, characterized in that the portion of the outer wall tie (8) between the first (15) or the second (16) feed-through aperture and the third feed-through aperture (18) is suitable for being received in the recess of the tie pin (2).

6. A wall tie according to one of the preceding claims, characterized in that the outer wall tie (8) is manufactured from spring steel.

7. A wall tie according to one of the claims 1-6, characterized in that at the side directed toward the inner cavity wall (6), the outer wall tie (8) is provided with clamping lugs (20, 21) which can be bent to stand perpendicular to the tie pin.

8. A wall tie according to claim 1, characterized in that the tie pin (2) at the side directed toward the outer wall (9) is provided with an enlargement (23) or a recess (28), and that the outer wall tie (8) is provided with a sleeve-like end (27) suitable for receiving an end of the tie pin (2), the sleeve-like end (27) being internally provided with clamp members suitable for engaging the enlargement (23) or the recess (28) on the tie pin (2).

9. A wall tie according to claim 8, characterized in that the inner wall tie (3) and the outer wall tie (8) are formed similarly, and the tie pin (2) at both its ends is provided with enlargements (23) or recesses (28), which are designed to engage the clamping members (24, 25) provided internally at the sleeve-like ends (26, 27) of the inner wall tie (3) and the outer wall tie (8).

10. A wall tie according to one of the preceding claims, characterized in that the planar moulded portions (4, 10) of the inner wall tie (3) and the outer wall tie (8) possess tie members (5, 11) which are provided with serrated edges (12) projecting in a circle from the plane of the moulded portions (4, 10).

11. A wall tie according to one of the preceding claims, characterized in that when the inner wall tie (3) is designed as prick tie, the wall plug (3') is designed with an insulation clamp forming (29) an integral part thereof.

12. A wall tie according to one of the claims 1-10, characterized in that in the embodiment in which the inner wall tie has a planar moulded portion and joined to, or connectable thereto, a virtually straight tie pin projecting from the inner wall, an insulation clamp can be applied to the tie pin.

Drawing