GB2357794A

GB2357794A - Securing device for closure members

Info

Publication number: GB2357794A
Application number: GB9921113A
Authority: GB
Inventors: Terence James Dolman
Original assignee: Trojan Hardware and Design Ltd
Current assignee: Trojan Hardware and Design Ltd
Priority date: 1999-09-08
Filing date: 1999-09-08
Publication date: 2001-07-04
Anticipated expiration: 2019-09-08
Also published as: GB2357794B; GB9921113D0

Abstract

A securing device for a closure member 14, for example a window, has a pair or cam means 16, 34, one on the closure member 14 the other on the support or frame 12, which engage each other on closing the closure member. A further pair of means 17, 36 may be provided spaced from the first pair, the cam means 34, 36 being provided at either end of elongate member 33.

Description

2357794 Securin,e Devices For Closure Members This invention relates to

securing devices for closure members. More particularly, but not exclusively, the invention relates to securing devices for windows.

The use of UPVC window frames is common but they have a drawback that an increase in pressure on the inside of the building or a decrease on the outside can cause the window to bow outwardly, because of the lack of any securing means along the sides of the window frame.

According to one aspect of this invention there is provided a securing device for a closure member, the securing device comprising first and second camming means, one of said camming means being mountable'on the closure member, and the other of said camming means being mountable on a support for the closure member, whereby the first and second camming means are engageable with each other on closing the closure member, and at least one of the camming means causes relative movement of the other camming means on said engagement, wherein the first and second camming means cooperate with each other on said relevant movement to secure the first and second camming means together.

In one embodiment, the first camming means is fixedly mountable on one of either the support or the closure member, and the second camming means is movably mountable on the other of either the support or the closure member.

The first camming means may comprise a pair of camming members, each being spaced from the other. The pair of camming members of the first camming means may be discrete from each other, and may each be provided with a respective camming surface to engage the second camming means.

The second camming means may comprise an elongate member which 2 may be provided at its opposite end regions with a pair of camming members. Advantageously, the elongate member is movable relative to the support or the closure member, and is conveniently slidable relative thereto. Each of the camming members of the second camming means is preferably provided with a respective canuning surface to engage the first camming means.

Preferably, the camming surfaces of the first camming means face towards each other, and the camming surfaces of the second camming means may face aiay from each other. Each of the camming surfaces of the first camming means may be adapted to engage a respective one of the camming surfaces of the second camming means. The respective surfaces of the camming members may be shaped such that one of the camming surfaces of the first camming means cooperates with one of the camming surfaces of the second camming means to cause said relative movement of the second camming means. The other of the camming surfaces of the first camming means may cooperate with the other camming surface of the second camming means on said relative movement to secure the first and second camming means together.

Thus, the engagement of the respective first faces with each other on closing of the closure member, causes said relative movement of the first and second camming means, whereby the respective second faces slide relative to each other into securing engagement.

Preferably, the first and second camming means are slidable relative to each other on said engagement. In one embodiment, the first camming means is fixedly mountable on the support, and the second camming means is mountable on the closure member for movement relative thereto. In another embodiment, the first camming means may be mountable on the support for movement relative thereto, and the second camming means may be fixedly mountable on the closure member.

The first and second camming means are preferably movable in the 3 opposite direction to said first mentioned direction on disengagement of the first and second camming means from each other.

Resilient means may be provided which may assist said relative movement on engagement of the first and second camming means with each other. Alternatively, the urging means may act to move the first and second camming means in the opposite relative directions on disengagement of the first and second camming means from each other.

An embodiment of the invention will now be described by way of example only with reference to the accompanying drawings, in which:- Fig. 1 is a sectional side view of a window in art opened condition; Fig. 2 is a side view of an upper part of the securing device with the window in the open position; Fig. 3 is a view similar to that shown in Fig. 2 of a bottom part of the securing device; Fig. 4 is a sectional side view of the window shown in Fig. 1 in a closed condition; Fig. 5 is a view of the upper part of the securing device shown in Fig. 4; Fig. 6 is a view similar to Fig. 5 of the bottom part.

Referring to Fig. 1, there is shown a sectional side view of a window frame 10 comprising a first part 12 fixed to the wall of a building in a window aperture, and a second part 14 hingedly attached to the first part 12. The second part 14 is moveable between an open condition, as shown in Fig. 1, to a closed condition, as shown in Fig. 3.

4 Fixedly mounted on each of the opposite left and right hand side members of the first part 12 of the window frame 10 there is provided two first camming means 16. Only one of the first camming means 16 is shown, i.e. the one mounted on the right hand side member, as viewed in the direction of the arrow A, one of which is shown in the drawings for clarity. The two first camming means 16 face each other on the frame 10.

Each first camming means 16 comprises a pair of discrete spaced camming members 17 comprising respective cams 18, 20. The cams 18, 20 have opposed respective camming surfaces 22, 24. Each camming member 17 includes a support plate 26 or 28, upon which the cams 18, 20 are respectively mounted. Fastening means in the form of screws 30 are inserted through the camming members 17 to secure them to the first part 12 of the frame 10.

A pair of second camming means 32 are mounted on each opposite left and right hand side member of the second part 14 of the frame 10 for sliding motion relative thereto in the direction of the double headed arrow X. The two second camming means 32 thus face away from each other and towards the respective first camming means 16 for engagement therewith. The drawings show only one of the second camming means 32, i.e. the one mounted on the left hand side member of the part 14, as viewed in the direction of the arrow A.

Each second camming means 32 comprises an elongate member 33 having cams 34, 36 arranged at opposite end regions thereof. The cam 34 of each second camming means 32 is adapted to engage the cam 18 of the respective first camming means 16. Similarly, the cam 36 of each second camming means 32 is also adapted to engage the second cam 20 of the respective first camming means 16.

Each of the cam members 34, 36 of the second camming means 32 is provided with an outwardly facing cam surface 38 or 40 respectively. The second cam surface 40 of the second camming means 36 is adapted to engage the second cam surface 24 of the first camming means 16, as the window is moved to the closed position.

As discussed above, for clarity, the drawings show only one of each of the first and second camming means 16, 32. These are on opposite sides of the window frame 10. Thus, it will be immediately apparant that the camming means 16, 32 shown in the drawings do not engage each other. Instead, engagement is between the respective first and second camming means on corresponding side members of the frame 10.

It will also be appreciated that each of the first and second camming means 16, 32 shown in the drawings is a mirror image of the respective first and second camming means which is not shown in the drawings.

When the window of the type shown in the drawings is moved to the closed position shown in Fig. 7, the two parts 12, 14 are first moved together, which moves the respective cam surfaces 24, 40 into engagement with each other. The subsequent closing of the window fastener (not shown) to lock the windows then moves the movable part 14 further towards the fixed part 12. This movement causes the cam surface 40 of each second camming means 32 to slide over the cam surface 24 of the corresponding first camming means 16, thereby causing each elongate member 33 to slide in the direction indicated by the arrow Y.

The combined movement of the sliding elongate member 33 and the further closing of the second part 14 moves each cam 34 in the direction indicated by the arrow Z. Thus, each camming surface 38 of each second camming means 32 slides over the camming surface 22 of the corresponding first camming means 16 to the position shown in Fig. 6, thereby securing the first and second camming means 16, 32 together which, in turn, secures each side of the moveable part 14 to each respective side of the fixed part 12. In this condition, the first and second camming means 16, 32 are in the position represented by Fig. 4.

6 Various modifications can be made without departing from the scope of the invention.

Whilst endeavouring in the foregoing specification to draw attention to those features of the invention believed to be of particular importance it should be understood that the Applicant claims protection in respect of any patentable feature or combination of features hereinbefore referred to and/or shown in the drawings whether or not particular emphasis has been placed thereon.

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Claims

Claim

1. A securing device for a closure member, the securing device comprising first and second camming means, one of said camming means being mountable on the closure member, and the other of said camming means being mountable on a support for the closure member, whereby the first and second camming means are engageable with each other on closing the closure member, and at least one of the camming means causes relative' movement of the other camming means on said engagement, wherein the first and second camming means cooperate with each other on said relevant movement to secure the first and second camming means together.

2. A securing device according to claim 1, wherein the first camming means is fixedly mountable on one of the support and the closure member, and the second camming means is movably mountable on the other of the support and the closure member.

3. A securing device according to claim 1 or 2, wherein the first camming means comprises a pair of camming members, each being spaced from the other.

4. A securing device according to claim 3, wherein the pair of camming members of the first camming means are discrete from each other, and each is provided with a respective camming surface to engage the second camming means.

5. A securing device according to claim 3 or 4, wherein the second camming means comprises an elongate member which is provided at its opposite end regions with a pair of camming members.

6. A securing device according to claim 5, wherein the elongate member is movable relative to the support or the closure member.

7. A securing device according to claim 5 or 6, wherein the elongate member is slidable to the support or the closure member.

8. A securing device according to any of claims 5 to 7, wherein each of the camming members of the second camming means is provided with a respective camming surface to engage the first camming means.

9. A securing device according to claim 8, wherein the camming surfaces of the first camming means face towards each other, and the camming surfaces of the second camming means may face away from each other.

10. A securing device according to claim 9, wherein each of the camming surfaces of the first camming means is adapted to engage a respective one of the camming surfaces of the second camming means.

11. A securing device according to claim 10, wherein the respective surfaces of the camming members are shaped such that one of the camming surfaces of the first camming means can cooperate with one of the camming surfaces of the second camming means, and the other of the camming surfaces of the first camming means can cooperate with the other camming surface of the second camming means on said relative movement to secure the first and second camming means together.

12. A securing device according to any preceding claim, wherein the first and second camming means are slidable relative to each other on said engagement.

13. A securing device according to any preceding claim, wherein the first camming means is fixedly mountable on the support, and the second camming means is mountable on the closure member for movement relative thereto.

14. A securing device according to any of claims 1 to 12, wherein the first camming means is mountable on the support for movement relative thereto, and the second camming means is fixedly mountable on the closure member.

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15. A securing device according to any preceding claim, wherein the first and second camming means are movable in the opposite direction to said first mentioned direction on disengagement of the first and second camming means from each other.

16. A securing device according to any preceding claim, wherein urging means is provided to assist said relative movement on engagement of the first and second camming means with each other.

17. A securing device according to any of claims 1 to 15, wherein urging means is provided to move the first and second camming means in the opposite relative directions on disengagement of the first and second camming means from each other.

18. A securing device substantially as herein described with reference to the accompanying drawings.

19. Any novel subject matter or combination including novel subject matter disclosed herein, whether or not within the scope of or relating to the same invention as any of the preceding claims.