BE1025133B1 - SCREW ANCHOR FOR CONFIRMING HARDWARE ON WINDOW OR DOOR PROFILES - Google Patents

Abstract

Screw anchor for fixing a fixing screw (11) in a profile (1) of a window or door with a tubular section (4) with a first wall (5) with a first screw hole (7) and a second opposite wall (6) ) having a second screw hole (8) therein, the screw anchor (18) having a first end (21) with a first external thread (22) for screwing the screw anchor (18) into the first screw hole (7) and of a second axial end (23) with a second external thread (24) for screwing the screw anchor (18) into the second screw hole (8), the outer diameter (F) of the first thread (22) being larger than the outer diameter (G) of the second thread (24) and wherein the portion of the screw anchor (18) from the second end (23) to the first thread (22) is narrower than the diameter (C) of the first screw hole (7) ).

Description

(30) Priority data:

(73) Holder (s):

FROM PARYS Emmanuel Diederich Camille

9790, WORTEGEM-PETEGEM

Belgium (72) Inventor (s):

VAN PARYS Emmanuel Diederich Camille 9790 WORTEGEM-PETEGEM

Belgium (54) SCREW ANCHOR FOR MOUNTING FITTINGS ON WINDOW OR DOOR PROFILES (57) Screw anchor for fastening a fixing screw (11) in a profile (1) of a window or door with a tubular section (4) with a first wall (5) containing a first screw hole (7) and a second opposite wall (6) containing a second screw hole (8), the screw anchor (18) having a first end (21) with a first external thread (22 ) for screwing the screw anchor (18) into the first screw hole (7) and of a second axial end (23) with a second external thread (24) for screwing the screw anchor (18) into the second screw hole (8) the outer diameter (F) of the first screw thread (22) being greater than the outer diameter (G) of the second screw thread (24)

and wherein the portion of the screw anchor (18) from the second end (23) to the first screw thread (22) is narrower than the diameter (C) of the first screw hole (7).

BELGIAN INVENTION PATENT

FPS Economy, K.M.O., Self-employed & Energy

Publication number: 1025133

Filing number: BE2017 / 5256

Intellectual Property Office

International classification: F16B 5/02

Date of grant: 16/11/2018

The Minister of Economy,

Having regard to the Paris Convention of 20 March 1883 for the Protection of Industrial Property;

Having regard to the Law of March 28, 1984 on inventive patents, Article 22, for patent applications filed before September 22, 2014;

Having regard to Title 1 Invention Patents of Book XI of the Economic Law Code, Article XI.24, for patent applications filed from September 22, 2014;

Having regard to the Royal Decree of 2 December 1986 on the filing, granting and maintenance of inventive patents, Article 28;

Having regard to the application for an invention patent received by the Intellectual Property Office on 12/04/2017.

Whereas for patent applications that fall within the scope of Title 1, Book XI, of the Code of Economic Law (hereinafter WER), in accordance with Article XI.19, § 4, second paragraph, of the WER, the granted patent will be limited. to the patent claims for which the novelty search report was prepared, when the patent application is the subject of a novelty search report indicating a lack of unity of invention as referred to in paragraph 1, and when the applicant does not limit his filing and does not file a divisional application in accordance with the search report.

Decision:

Article 1

VAN PARYS Emmanuel Diederich Camille, Heie 3, 9790 WORTEGEM-PETEGEM Belgium;

represented by

VAN VARENBERG Patrick, Arenbergstraat 13, 2000, ANTWERP;

a Belgian invention patent with a term of 20 years, subject to payment of the annual fees as referred to in Article XI.48, § 1 of the Economic Law Code, for: SCREW ANCHOR FOR ATTACHING FITTINGS ON WINDOW OR DOOR PROFILES.

INVENTOR (S):

VAN PARYS Emmanuel Diederich Camille, Heie 3, 9790, WORTEGEM-PETEGEM;

PRIORITY :

BREAKDOWN:

Split from basic application:

Filing date of the basic application:

Article 2. - This patent is granted without prior investigation into the patentability of the invention, without warranty of the merit of the invention, nor of the accuracy of its description and at the risk of the applicant (s).

Brussels, 16/11/2018,

With special authorization:

BE2017 / 5256

Screw anchor for attaching fittings to window or door profiles.

The present invention relates to a screw anchor for attaching fittings such as hinges or the like to a tubular window or door profile.

Window or door profiles made of aluminum or the like usually have a tubular hollow section with protruding walls.

A fastening with a screw, which is screwed directly into a wall of the tubular section, is sufficient for fastening fittings that have little or no load.

In the case of hinges or other fittings that must be able to bear a heavy load, such fastening with screws is not sufficient.

Solutions are already known for this in the form of inserting a thicker aluminum profile into the tube or in the form of a clamping anchor as described in the patent EP 2.093.362

The insertion of an aluminum profile is only possible during the assembly of the window or door, so that this reinforcement cannot be retrofitted.

BE2017 / 5256

The aforementioned clamping anchor requires the necessary dexterity and attention in its placement, which makes it difficult to automate.

Another known solution is that in which the fastening screw is not screwed directly into the profile, but in an intermediate so-called screw anchor in the form of a thicker and longer screw with an external self-tapping screw with which the screw anchor is screwed into a first pre-drilled screw hole of a first wall into the second pre-drilled screw hole in an opposing second wall of the tubular section, the screw anchor being provided with an internal screw thread into which the aforementioned fixing screw can be screwed.

An advantage of a screw anchor is that it is more firmly in the aluminum tube, because the anchor is screwed with a longer thread length compared to a fixing screw with a smaller diameter, because of the larger diameter, on the one hand, and because of the the fact that the screw anchor is fixed in two walls instead of just a single wall, on the other.

In known screw anchors of the aforementioned type, the external screw thread extends over the full length of the screw anchor and the diameter of this screw thread is constant over the full length of the screw anchor. The pre-drilled screw holes have in that

BE2017 / 5256 case the same diameter which is slightly smaller than the outside diameter of the external self-tapping screw thread. The screw anchor is provided at one end with a collar with a diameter greater than the outside diameter of the external screw thread and which forms a stop end end for screwing in the screw anchor.

With such a screw anchor, the tip of the screw thread is first screwed into the first pre-drilled screw hole and screwed on until the point of the screw thread reaches the second pre-drilled screw hole, after which the screw anchor is screwed a little further into this second screw hole until the aforementioned collar against the wall with the first screw hole.

A problem that occurs with this type of screw anchors is that, at the start of screwing in the screw anchor, this screw anchor is still completely outside the profile and the screw anchor must be directed as best as possible towards the second screw hole in the opposite wall that is no longer visible at that time. It often happens that the screw anchor is slanted and the tip of the screw anchor does not end up in the second screw hole, after which the entire operation has to be restarted.

When correcting the screw-in direction, the screw thread in the first hole is damaged. In the worst case, this screw thread is no longer usable and a completely new profile must be made. That is expensive and

BE2017 / 5256 time consuming.

A drawback of such a screw anchor is also that it has to be screwed into the profile over its entire length, which is time-consuming.

Another drawback is the presence of the aforementioned stop-forming collar protruding outside the wall with a certain thickness. This means that a recess must be provided for this in the fitting to be fixed, which can weaken the fitting if, for example, the recess has to be milled out during assembly or for which an extra thick fitting must be provided with a preformed recess, which is disadvantageous with regard to the desired slenderness of the frames of windows and doors.

The present invention aims to solve one or more of the above and other disadvantages.

To this end, the invention relates to a screw anchor for fastening a fastening screw in a profile of a window or door with a tubular part with a first wall containing a first screw hole and a second opposite wall containing a second screw hole, the screw anchor being provided with an internal screw thread for fastening the fastening screw, characterized in that the screw anchor is provided with a first axial end with a first external screw thread for screwing the screw anchor in the first screw hole and with a second

BE2017 / 5256 axial end with a second external thread for screwing the screw anchor into the second screw hole, wherein the outer diameter of the first screw thread is larger than the outer diameter of the second screw thread because the first screw thread is intended to be screwed into a first screw hole with a diameter larger than the diameter of a second screw hole for which the second screw thread is intended and the portion of the screw anchor from the second end to the first screw thread being narrower than the diameter of the first screw hole, such that this part without screws it is possible to insert through the first screw hole, the length of this part being such that the screw anchor can be inserted with at least a part of its second end into the second screw hole without screwing.

With a screw anchor according to the invention, the part with the screw anchor from the first screw thread to the top of the second end can be inserted without screwing into the profile through the first screw hole into the second screw hole before the anchor can be screwed on.

This offers the advantage that the screw anchor does not have to be screwed through the first screw hole over its full length before the second screw thread can be screwed into the second screw hole. This is faster than with the known screw anchors and thus saves working time.

BE2017 / 5256

Another advantage is that when the screw anchor is screwed into the first and / or in the second screw hole, the screw anchor is already supported in two places, namely at the location of the two screw holes, so that the screw anchor is already from the The start of the screwing is aligned with respect to the two screw holes and this prevents the screw anchor from tilting undesirably when screwing on.

Preferably, the axial second screw-to-screw thread is larger than the outside of the first distance from the start of the start of the first, the normal distance between the wall and the outside of the second wall of the tubular part of the profile.

This ensures that the second screw thread is first formed in the second wall of the second screw hole before the first screw thread is formed in the first wall of the first screw hole, so that the maximum torque for screwing the screw anchor is limited.

Note that to limit the maximum torque, the first screw thread can also be formed in the first wall before starting on the second screw thread. In that case the axial distance from the start of the first screw thread to the start of the second screw thread should preferably be smaller than the normal distance between the inside of the first wall and the inside of the second wall of the tubular part of the profile .

BE2017 / 5256

According to a preferred characteristic, a stop is provided at a distance from the attachment point of the second screw thread which limits the functional length of the second screw thread and which comes into contact with the second wall when the screw anchor is screwed on and thereby forms a stop for the further screwing the screw anchor.

In this way, the stop is hidden in the interior of the tube.

Preferably, the distance from the stop to the extreme end of the first end is equal to or less than the normal distance between the outside of the first wall and the inside of the second wall, but greater than the normal distance between both walls.

This offers the advantage that the head of the screw anchor is fully recessed in the first wall, so that this wall is free of protruding parts and therefore no recess must be provided in the fitting, unlike the known screw anchors.

The first and second threads of the screw anchor both have the same pitch. As a result, the distance between the first and second wall remains the same and the aluminum tube is not deformed.

According to a preferred embodiment, the first and second threads are joined together by means of

BE2017 / 5256 a pin with a diameter larger than the outer diameter of the second screw thread, the aforementioned stop being formed by the stepped transition between the two diameters.

Such a screw anchor is relatively easy to realize in practice.

In addition, the maximum outer diameter of the aforementioned pin is smaller than the diameter of the first screw hole for which the first screw thread is intended, so that the pin and the associated second screw thread can be inserted into the first screw hole without screwing.

Preferably, the second screw thread is provided with a conical point which forms a centering guide for the second screw thread in the second screw hole when inserting the screw anchor.

In an analogous manner, a conical tapered transition is preferably provided between the first screw thread and the pin, so that it can form a centering guide for the first screw thread with respect to the second screw hole.

With the insight to better demonstrate the features of the invention, a preferred embodiment of a screw anchor according to the invention is described below, by way of example without any limitation, with reference to the accompanying drawings, in which:

f

BE2017 / 5256 figure 1 shows a cross section of an aluminum profile of a window or door with screw holes of the same diameter for a screw anchor of the known type;

Figure 2 shows the profile of Figure 1 with a screw anchor of the known type ready to be screwed into the profile;

Figure 3 shows a screw anchor of Figure 2 in the assembled state and with partial cutaway.

figure 4 shows on a larger scale the part indicated by circle F4 in figure 3;

Figure 5 shows the same profile as that of Figure 1, but with screw holes of different diameters for a screw anchor according to the invention;

figure 6 shows on a larger scale a screw anchor according to the invention;

Figure 7 shows the screw anchor of Figure 6 in a first step of mounting the screw anchor in the profile of Figure 5;

figure 8 represents the situation of figure 7 but with a fully assembled screw anchor according to the invention.

figure 9 shows on a larger scale the part indicated by F8 in figure 8.

Figure 1 shows a classic aluminum profile 1 of the fixed frame of a window or door.

The profile 1 is composed of an outer shell 2a and an inner shell 2b which are connected to each other by so-called insulating bars 3.

BE2017 / 5256

The outer shell 2b is designed as a tubular section 4 of the profile 1 with two parallel opposite walls 5 and 6, respectively a first wall 5 along the inner circumference of the fixed frame and a second wall 6 along the outer circumference of the fixed frame.

In this case, the profile is already provided with pre-drilled screw holes, a first screw hole 7 with diameter A in the first wall 5 and a second coaxial screw hole 8 with the same diameter, respectively.

A in the second wall 6, which screw holes 7 and 8 are intended for the attachment of a screw anchor 9 of a known type as shown in figure 2.

This screw anchor 9 is provided with an internal screw thread 10 for fixing a fixing screw 11 which is intended for fixing a hinge or other fitting (not shown) against the outside 5a of the first wall 5.

The screw anchor 9 of the known type consists of a cylindrical pin 12 with a first end 13 with a collar 14 and a second end 15 with a conical point 16.

The entire length of the pin 12 is provided with an external self-tapping screw thread 17 with an outer diameter B which is slightly larger than the diameter A of the screw holes 7 and 8 and which is intended to be self-tapping

BE2017 / 5256 can be screwed into these screw holes 7 and.

The way in which the screw anchor 9 is mounted is illustrated with reference to Figures 2 and 3.

At the start, the screw anchor 9 with its conical point is inserted into the first screw hole 7 as shown in figure 2, and the screw anchor 9 with conical point 16 is pointed by feel to the second screw hole 8, after which the screw anchor 9 is started on to be screwed around its axial axis XX '.

As a result, the screw anchor 9 screws into the screw hole 7 and moves axially in the direction of the second screw hole 8 until the conical point 16 enters the second screw hole 8, at least insofar as the screw anchor 9 is in the starting position of figure 2 was aimed correctly. As the screw anchor 9 is further screwed on, the external screw thread 17 will also expand

screw on in it second screw hole 8 to when the collar 14 in Contact comes with the outside 5a of the first wall 5 25 It falls on to notice that it screw anchor to be over full length until to the collar 14 through it the first

screw hole 7 must be screwed, which takes some time.

It should also be noted that when initially the screw anchor 9 is misaligned with its point 16 in

BE2017 / 5256 the direction of the second screw hole 8, the point 16 will collide with the inside 6a of the second wall 6, in which case the screw anchor must be completely turned back in order to be able to restart the entire operation.

In addition, it is apparent from the detail drawing of figure 4 that with the known type of screw anchor 9 the collar 14 protrudes outwards, as a result of which the outside 5a of the wall 5 is no longer flat and a recess must be provided for this purpose or it must be provided in the assemble fittings.

Figure 5 shows the same profile 1, but this time with pre-drilled screw holes 7 and 8 for a screw anchor 18 according to the invention as shown in

15 figure 6 aforementioned with an internal fixing screw screw thread 11. 19 for e and It first screw hole '7 in this case a diameter C That taller than the diameter D of the second screw hole 20 8. It screw anchor 18 is in this case formed as a pen 20 with an outer diameter E that is slightly smaller is then the

diameter C of the first screw hole 7 but which is larger than the diameter D of the second screw hole 8.

The screw anchor 18 is provided at a first end 21 with a first external screw thread 22 with an outer diameter F greater than the diameter C of the first screw hole 7 and which is intended to be screwed into this first screw hole 7. The first

BE2017 / 5256 screw thread 22 is preferably a self-tapping screw thread.

Furthermore, the screw anchor 18 at its second end 23 is provided with a second external screw thread 24 with an outer diameter G larger than the diameter D of the second screw hole 8 and which is intended to be screwed into this second screw hole 8. The second screw thread 24 is preferably a self-tapping screw thread.

Preferably, the axial length H of the first screw thread 22 and the axial length I of the second screw thread 24 are at most equal to one tenth of the total length J of the screw anchor 1 and these lengths H and I are preferably less than ten millimeters, rather shorter than five millimeters.

The pin 20 and the two external threads 22 and 24 are positioned coaxial to one another with a common axis X-X '.

The diameter G of the second screw thread 24, the diameter E of the central pin 20 connecting screw threads 22 and 24, is smaller than the two such that a shoulder is formed at the transition between the second diameters E and G, the roller fulfills from stop 25 against the inside 6a of the second wall 6 of the profile 1 and thus forms a stop for tightening the screw anchor 18. The stop 25 defines

BE2017 / 5256 also the functional length I of the second screw thread 24.

The second screw thread 24 is provided at its end with a conical tip 26 which forms a guide for the end of the screw anchor 18 to the second screw hole 8 and in which the second screw thread 24 extends.

Analogously, the transition between the first screw thread 22 and the pin 20 is formed with a conical tapering connection 27 which forms a guide for the first screw thread in the first screw hole 7 and in which the first screw thread 22 extends.

It is noted that the screw anchor at its first end 21 terminates with the first screw thread 24 and thus no collar or other stop is present at this end 21.

The mounting steps of the screw anchor 18 according to the invention are explained with reference to Figures 7 and 8.

The screw anchor 18 is first inserted through the first screw hole 7 as shown in Figure 7 with the conical tip 26 guided into the second screw hole 8.

In this way the screw anchor is supported at the location of both screw holes 7 and 8, so that the screw anchor 18 is automatically correct from the start with its axis X-X '

BE2017 / 5256 is aligned with respect to the two screw holes 7 and 8.

To this end, the screw anchor 18 is narrower than the diameter C of the first screw hole 7 over a certain length K from the extreme point at the second end 23 to the starting point of the first screw thread 22, such that this part with axial length K passes through without screws the first screw hole 7 can be inserted, this axial length K preferably being such that the screw anchor 18 can be inserted with at least a part of its second end 23 into the second screw hole 8 without screwing as shown in figure 7.

Preferably, when the screw anchor 18 is screwed on, the second screw thread 24 first starts to screw into the second screw hole 8 before the first screw thread 22 starts to screw into the first screw hole 7.

To this end, the distance L between the feed of the second screw thread 24 to the feed of the first screw thread 22 must be greater than the normal distance M between the outside 5a of the first wall 5 and the outside 6b of the second wall 6 of the tubular part 4 of the profile 1.

When the screw anchor 18 is tightened with its stop 25 against the second wall 6 as shown in figure 8, the screw anchor 18 is preferably with its first end 21 completely in the profile 1, such that

BE2017 / 5256 no parts of the screw anchor 18 protrude beyond the outside 5a of the wall 5. As a result, this outside 5a forms a completely flat support surface for mounting a hinge or other fitting.

For this purpose, the axial distance N of the stop 25 to the extreme end of the first end 21 of the screw anchor 18 should be equal to or less than the normal distance M between the outside 5a of the first wall 5 and the inside 6a of the second wall 6, but be greater than the normal distance P between both walls 5 and 6 to ensure that the screw anchor 18 is supported by both walls 5 and 6 in its position of use of Figure 8.

It is clear that the connection between the first and the second screw thread 22, 24 can also be filled in by elements other than by the pin 20 of the example of figure 6, for instance because the second screw thread 24 extends up to the first screw thread and on it said second screw thread is welded to a stop 25 or the like which divides the second screw thread into a functional portion corresponding to the second screw thread 24 of Figure 6 and a non-functional part whose function corresponds to that of the pin 20 of Figure 6.

The present invention is by no means limited to the described by way of example and to be ₁₇ BE2017 / 5256 achieved without departing from the scope of the invention in the figures illustrated embodiment, but a screw anchor according to the invention can in all sorts of shapes and dimensions.

BE2017 / 5256

Claims (11)

Conclusions. 1.- Screw anchor for the attachment of a 5 fixing screw (11) in a profile (1) of a window or door with a tubular part (4) with a first wall (5) containing a first screw hole (7) and a second opposite wall (6) containing a second screw hole (8), the screw anchor (18) being provided with an internal screw thread (10) for fastening the fastening screw (11), characterized in that the screw anchor (18) is provided with a first axial end (21) with a first external thread (22) for screwing the screw anchor (18) into the first screw hole (7) and of a second axial end (23) with a second external screw thread (24) for screwing the screw anchor (18) in the second screw hole (8), where the outside diameter (F) of the first screw thread (22) is larger than the outside diameter (G) of the second screw thread (24) because the first screw thread (22) is intended to be screwed on in the first screw hole (7) with a gr any diameter than the diameter of the second screw hole (8) for which the second screw thread is intended and the portion of the screw anchor 25 (18) from the second end (23) to the first screw thread (22) being narrower than the diameter ( C) of the first screw hole (7) such that this part can be inserted without screws through the first screw hole (7), the axial length (K) of this part 30 being such that the screw anchor (18) with at least one portion of its second end (23) into the BE2017 / 5256 second screw hole (8) can be inserted without screwing. Screw anchor according to claim 1, characterized in that 5 that the axial length (H) of the first screw thread (22) is less than one tenth of the total length (J) of the screw anchor (18). Screw anchor according to claim 1 or 2, therefore 10 characterized in that the axial length (H) of the first screw thread (22) of the screw anchor is at most ten millimeters, more preferably at most five millimeters. 15 Screw anchor according to any one of the preceding claims, characterized in that the distance (L) between the attachment of the second screw thread (24) and the attachment of the first screw thread (22) is greater than the normal distance (M) between the outside (5a) of the first wall (5) and the 20 exterior (6b) of the second wall (6) of the tubular section (4) of the profile (1). Screw anchor according to one of the preceding claims, characterized in that a stop (25) is provided at a distance from the feed 25 (26) of the second screw thread (24), which is the functional length (I) of the second screw thread. (24) and which comes into contact with the second wall (5) when the screw anchor (18) is screwed on and thereby forms a stop for further screwing of the screw anchor (18). BE2017 / 5256 Screw anchor according to claim 1 or 2, characterized in that the functional length (1) of the second screw thread (24) is at most ten millimeters, more preferably at most five millimeters. 7.- Screw anchor according to claim 5 or 6, therefore characterized that the distance (N) from the stop (25) to it extreme end from the first end (21) from it screw anchor (18) equal or smaller is than the normal distance (M) between the outside (5a) from the first wall (5) and the inside (6a) of the second wall (6), but is greater than the normal distance (P) between both walls (5,6). Screw anchor according to any one of claims 5 to 7, characterized in that the first and the second screw threads (22, 24) are connected to each other by means of a round pin (20) with a maximum outer diameter (E) which is larger is then the outer diameter (G) of the second screw thread (24), 20 wherein said stop (25) is formed by the transition between both diameters (E, G). Screw anchor according to claim 8, characterized in that the maximum diameter (E) of said pin (20) 25 is smaller than the diameter (C) of the first screw hole (7) for which the first screw thread (22) is intended. Screw anchor according to any one of the preceding claims, characterized in that on the end of the second 30 thread (24) is a conical tapering point BE2017 / 5256 provided for guiding this end into the second screw hole (8). Screw anchor according to any one of claims 8 to 10, 5, characterized in that the transition between the first screw thread (22) and the pin (20) is via a connecting piece (27) which tapers in the direction of the second end (23). BE2017 / 5256 2b BE2017 / 5256 BE2017 / 5256 BE2017 / 5256 BE2017 / 5256 Screw anchor for attaching fittings to window or door profiles. Screw anchor for fastening a fastening screw (11) in a profile (1) of a window or door with a tubular part (4) with a first wall (5) containing a first screw hole (7) and a second opposite wall (6 ) having a second screw hole (8) therein, the screw anchor (18) having a first end (21) with a first external thread (22) for screwing the screw anchor (18) into the first screw hole (7) and a second axial end (23) with a second external screw thread (24) for screwing the screw anchor (18) into the second screw hole (8), the outer diameter (F) of the first screw thread (22) being greater than the outside diameter (G) of the second screw thread (24) and where the portion of the screw anchor (18) from the second end (23) to the first screw thread (22) is narrower than the diameter (C) of the first screw hole ( 7).