GB2381291A

GB2381291A - Hinge with concealed fasteners

Info

Publication number: GB2381291A
Application number: GB0224836A
Authority: GB
Inventors: Nigel Philip Shenton
Original assignee: Window Fabrication and Fixing Supplies Ltd
Current assignee: Window Fabrication and Fixing Supplies Ltd
Priority date: 2001-10-27
Filing date: 2002-10-25
Publication date: 2003-04-30
Anticipated expiration: 2022-10-25
Also published as: GB0125886D0; GB0224836D0; GB2381291B

Abstract

A hinge 10 comprises a frame fixture 12 for attaching to a frame 18 and a sash fixture 14 for attaching to a wing 20, wherein the sash fixture 14 comprises a sash plate 22 which is fastened to the wing 20, a sash member 24 which is removably mounted on the sash plate 22 and which is pivotally connected to the frame fixture 12, and a cover 26 which is removably attached to the sash member 24 and which substantially covers the sash member 24 and the sash plate 22 from view. The sash member 24 may be slidably mounted to the sash plate 22 so as to provide adjustment of the hinge 10 relative to the wing 20. Adjustment may be carried out by rotating a threaded member 60, which is provided on the sash member 24 and which engages the sash plate 2. The cover 26 may be screwed to the sash member 24, the screw 70 only being accessible from the rear of the sash 20. The cover 26 provides the hinge 10 with increased security.

Description

Title: Hinge The present invention relates to a hinge.

It is alreadyknownto provide ahinge having adjustability in the sash fixture to enable"heel and toe"adjustment of awing, for example a door. Typically, the sash fixture includes a sash plate for attachment to the door and a sash member adjustably and removably mounted on the sash plate.

In order to allow fastening of the sash plate to the door without separation of the sash plate and sash member, apertures are sometimes provided through the sash member to allow access for fixing screws. Therefore, a cover is generally provided to improve the aesthetic appeal of the hinge by covering the fixings.

Several covers have already been proposed, including covers which are fastened from the front leaving at least one screw head exposed, covers which only partially cover the sash fixture and covers which are awkward to position and fasten.

It is an object of the invention to provide an improved hinge in which the method of attachment of the hinge to a wing is hidden from view, thus increasing the security and the aesthetic appeal of the hinge.

According to the broadest aspect of the present invention there is provided a hinge comprising a frame fixture for attaching to a frame, and a sash fixture for attaching to a wing, the sash fixture being pivotally connected to the frame fixture, the sash fixture having a sash plate adapted to be fastened to the wing, a sash member removably mounted on the sash plate and adapted to be pivotally connected to the frame fixture, and a cover removably attached to the sash member, which substantially covers the whole of the sash member and sash plate from view, the cover having a front portion, two side walls and an end wall which depend from the front portion and a pair of locating elements, which engage with a pair of respective recesses in the sash member, the cover

being locked to the sash member by a threaded fastener, which is inserted from the rear of the sash member.

It is an advantage of the hinge in accordance with the invention that there are no visible fixings or screw adjusters from the front of the sash fixture. It is a further advantage that the cover is firmly attached to the sash member by virtue of the three points of engagement/fastening.

Preferably the locating elements extend from the inside surfaces of the two side walls of the cover, and the respective recesses are provided in side walls on either side of the sash member.

The cover may be temporarily held in position covering the sash member during fitting of a wing, by opening the wing, the cover being clamped between the frame fixture and sash member, enabling locking of the cover to the sash member by the threaded fastener inserted from the rear of the sash member.

Preferably the sash member is removably and adjustably mounted on the sash plate.

The sash member is preferably mounted for longitudinal sliding movement on the sash plate. The sash plate may have a substantially T-shaped cross section, and the sash member may have a substantially C-shaped cross section over at least part of its length.

Preferably the sash plate is provided with plurality of apertures adapted to receive screws for attachment of the sash plate to the wing.

The sash member is preferably provided with elongate apertures which align with the apertures of the sash plate, enabling the sash plate to be screwed to the wing whilst connected in sliding engagement with the sash member.

A threaded member may be mounted for rotation on the sash member and may engage an internal thread of the sash plate, rotation of the threaded member causing adjustment of the position of the sash member relative to the sash plate.

The invention will now be described by way of example only with reference to the accompanying drawings in which; Fig 1 shows a plan view of a hinge in accordance with the invention in position on a frame section and door section; Fig 2 shows a rear view of the hinge shown in Fig 1, viewed in the direction of arrow A; Fig 3 shows a front view of a sash plate of the hinge shown in Figs I and 2; Fig 3A shows an end view of the sash plate shown in Fig 3, viewed in the direction of arrow B, against the surface of a wing; Fig 4 shows a front view of a sash member attached to the sash plate of Figs 3 and 3A; Fig 4A shows an end view ofthe sash member and sash plate, partly in cross section, of Fig 4, viewed in the direction of arrow C; Fig 5 shows a further front view of the sash member attached to the sash plate, with the sash member in a different position relative to the sash plate; Fig 6 shows the sash plate in position on the door section, and the sash member being aligned for sliding engagement with the sash plate; Fig 6A shows a cross section through Fig 6 along the line E-E;

Fig 7 shows the sash member and sash plate in position on the door section, with a cover being aligned for engagement with the sash member; Fig 8 shows a front view, partially in section, of the sash member, sash plate and cover shown in Fig 7; Fig 9 shows an exploded sectional plan view of the sash member and cover; Fig 10 showsaplanview, partiallyinsection, ofthecovermountedonthe sashmember ; and Fig 1 OA shows a schematic view of the engagement of a locating element of the cover engaging a recess in the side wall of the sash member.

Referring firstly to Fig 1, a hinge is generally indicated at 10, and comprises a frame fixture 12 and a sash fixture 14. A pivot pin, shown in dotted outline at 16, pivotally connects the frame fixture 12 to the sash fixture 14 in the conventional manner of a hinge. The frame fixture 12 is shown mounted in position on door frame 18, and the sash fixture 14 is shown mounted on a door 20.

The sash fixture 14 includes a sash plate 22, a sash member 24 and a cover 26, all of which can be seen in the rear view of the hinge 10 shown in Fig 2.

The sash plate 22, shown in particular in Figs 3 and 3A, is substantially rectangular in shape, with recesses 28,30 provided at either end of the sash plate. A row of countersunk holes 32 are provided on either side ofthe sashplate 22, and enable the sash plate to be attached to a wing, for example a door or window, using screws or other suitable fasteners. The sash plate 22 has a Tshaped cross section, as can be seen from Fig 3A, and has a threaded bore 34 provided in the end of the sash plate, in the bottom of the recess 30. When the sash plate 22 is attached to the surface of awing, indicated schematically at 36, apair oflongitudinal channels 38 are formed on either side of the sash plate between flanges of an upper portion 40 of the T-section and the surface 36.

Referring now to Figs 4 to 6A, the sash member 24 includes a pivot receiving portion 42 having a through bore 15 for receiving the pivot pin 16, a body portion 44 and an end portion 46. The body portion 44 has a substantially C-shaped cross section, see Fig 6A, having an upper surface 48, a pair of side walls 50, and a pair of flanges 52 extending perpendicularly from the inside

surface of the lower edges of the side walls. The C-shaped body portion 44 is unobstructed at the end adjacent to the pivot receiving portion 42, and hence the sash member 24 can slide onto the sash plate 22 in the direction of arrow D, shown in Fig 6. The flanges 52 of the sash member 24 slide in the channels 38 of the sash plate and wing surface 36, and the upper portion of the Tsection 40 of the sash plate is captured by the sash member.

Referring back to Fig 2, a through hole 54 is provided in the end portion 46 of the sash member 24, through a boss 56 which extends towards the inside of the sash member. The hole is recessed at 58, part way along its length, to receive the head of a threaded bolt 60. The thread ofthebolt 60 is engaged with the internal thread of the threaded bore 34, whilst the head of the bolt can rotate freely in the recess 58. A slot 62 in the head of the bolt 60 can be accessed through the hole 54, as can be seen in Fig 4A. Adjustment of the position of the sash plate 22 relative to the sash member 24 is achieved by rotation of the bolt 60, and provides"heel and toe"adjustment for a wing fitted in a frame using the hinges 10.

The extent of the adjustment of the sash plate 22 relative to the sash member 24 can be seen in Figs 4 and 5, in which the ends of the sash plate are indicated by the dotted lines S, P, and the end of the sash member is indicated by dotted line M. The boss 56, see Fig 2, of the sash member 24 is shaped to fit in the recess 30 of the sash plate 22 for maximum adjustment of the sash plate towards the end portion 46 of the sash member.

A pair of elongate apertures 64 are provided in the sash member 24, see Figs 4 and 5, which align with the screw apertures 32 in the sash plate 22 when the sash member 24 and sash plate 22 are in sliding engagement. Therefore, if the sash member 24 is supplied mounted on the sash plate 22, the elongate apertures 64 allow access to the screw apertures 32 over the full range of adjustment, and enable the sash plate to be fitted to a wing without removal of the sash member.

Two countersunk holes 66,68 are also provided in the pivot receiving portion 42 of the sash member 24, see Figs 4,5, 9 and 10. The first hole 66 communicates with the bore 15, and is internally threaded to receive a grub screw (not shown). The end of the grub screw engages a circumferential recess in the pivot pin 16 in order to lock the pivot pin against longitudinal movement in the bore 15. The second hole 68 passes through the sash member 24 and receives a threaded screw 70 which engages a threaded bore 72 in the cover 26, see especially Fig 9. A boss 74 is provided on the inside of a front portion 25 of the cover 26, which accommodates the threaded bore 72. The cover 26 also includes two side walls 27 and an end wall 29 which depend from the front portion 25 of the cover.

The side walls 50 of the body portion 44 of the sash member 24 are stepped down in thickness adjacent the end portion 46, indicated at 75 in Fig 9, and an undercut or recess 76 is provided in each side wall. The inside of side walls 27 of the cover 26 are correspondingly increased in thickness and shaped with a pair of wedge shaped locating elements 78, which can be located underneath or engaged in the undercuts 76, as viewed in Figs 10 and 1 OA.

The cover 26 can slide into position on the sash member 24, as shown by arrow F in Figs 7 and 8. The cover 26 is shaped to fit around the sash member, and terminates in a lip 80, which abuts on an external shoulder 82 of the pivot receiving portion 42. The wedge shape of the locating elements 78 enables them to be moved into position in the recesses 76 with ease, and the corresponding shape of the recesses 76 has the effect of drawing the cover 26 down onto the sash member 24, with a camming action as the cover is moved into postion. Once in position, the portion of the cover 26 covering the end portion 46 of the sash member is thus firmly retained in position.

The cover 26 can be temporarily held in position covering the sash member 24 during fitting of a wing, by opening the wing, the cover being clamped between the frame fixture and sash member, enabling locking of the cover to the sash member by the threaded screw fastener 70 inserted from the rear of the sash member into the threaded bore 72.

As can be seen from Fig 9, the screw 70 can onlybe accessed from the back of the sash member 24, and therefore, once the cover 26 is in position, the door 20 must be open to remove the cover for adjusting or removal of the hinge 10. In Fig 1, it can be seen that the sash plate 22 and sash member 24 are substantially completely obscured from view by the cover 26, and hence the aesthetic appeal and security of the hinge 10 is much improved, when compared to other hinges, in which the adjustment and attachment means are visible. The arrangement of the pivot 16 and frame fixture 12 is similar to that disclosed in the applicant's co-pending patent application number GB 0110359.7.

The cover 26 is made from metal or metal alloywhich can be coated or painted easily to achieve any desired surface finish. Most simply, the cover 26 can be cast as a one-piece casting for maximum strength and durability, and can be removed and replaced any number of times without the deterioration associated with plastics covers having resilient parts.

Claims

1. A hinge comprising a frame fixture for attaching to a frame, and a sash fixture for attaching to a wing, the sash fixture being pivotally connected to the frame fixture, the sash fixture having a sash plate adapted to be fastened to the wing, a sash member removably mounted on the sash plate and adapted to be pivotally connected to the frame fixture, and a cover removably attached to the sash member, which substantially covers the whole of the sash member and sash plate from view, the cover having a front portion, two side walls and an end wall which depend from the front portion and apair oflocating elements, which engage with a pair ofrespective recesses in the sash member, the cover being locked to the sash member by a threaded fastener, which is inserted from the rear of the sash member.

2. A hinge as claimed in claim 1 in which the locating elements extend from the inside surfaces of the two side walls of the cover, and the respective recesses are provided in side walls on either side of the sash member.

3. A hinge as claimed in claim 1 or 2 in which the cover is adapted to be temporarily held in position covering the sash member during fitting of a wing, by opening the wing, the cover being clamped between the frame fixture and sash member, enabling locking ofthe cover to the sash member by the threaded fastener inserted from the rear of the sash member.

4. A hinge as claimed in any preceding claim in which the sash member is removably and adjustably mounted on the sash plate.

5. A hinge as claimed in any preceding claim in which the sash member is mounted for longitudinal sliding movement on the sash plate.

6. A hinge as claimed in any preceding claim in which the sash plate has a substantially Tshaped cross section.

7. A hinge as claimed in any preceding claim in which the sash member has a substantially Cshaped cross section over at least part of its length.

8. A hinge as claimed in any preceding claim in which the sash plate is provided with a plurality of apertures adapted to receive screws for attachment of the sash plate to the wing.

9. A hinge as claimed in claim 8 in which the sash member is provided with elongate apertures which align with the apertures of the sash plate, enabling the sash plate to be screwed to the wing whilst connected in sliding engagement with the sash member.

10. A hinge as claimed in any preceding claim in which a threaded member is mounted for rotation on the sash member and engages an internal thread of the sash plate, rotation of the threaded member causing adjustment of the position of the sash member relative to the sash plate.

11. A hinge substantially as described herein with reference to and as illustrated in Figs 1 to 10 of the accompanying drawings.