Split hinge

Abstract: Split hinge, in particular ball split hinge, comprising two leaves (1) provided with fixing openings (2) and two sleeve-type parts (3) (known as knuckless) which are joined to the leaves (1) and which are each closed at one end (4, 4′) and jointly accomodate a hardened steel hinge pin (5), which is fixedly connected with one sleeve-type part (3), whereby the centres of the two leaves (1) lie in a flat plane which runs through the centre line of the two sleeve-type parts (3) and the two leaves (1) are staggered with respect to each other in all positions.

Description: The invention relates to a split hinge in particular ball split hinge, comprising two leaves provided with fixing openings and two sleeve-type parts which are each closed at one end and jointly accommodate a hardened steel hinge pin, which is fixedly connected with one sleeve-type part, which leaves are staggered with respect to each other in all positions. Such a split hinge is known from CH-A-649123. This known split hinge has the disadvantage that, due to the gap between both sleeve-type parts, the hinge pin is accessible. This means that, even though the hinge pin is hardened, it is prone to forgery. At use of this split hinge, the sleeve-type part with the hinge fixedly connected therewith is arranged below the other sleeve-type part on the hinge pin, which other sleeve-type part is also closed at the upper side. The aim of the invention is therefore to provide a split hinge which lacks this disadvantages. This is achieved in that between the two sleeve-type parts and around the hinge pin a spacing ring is provided, and in that the centres of the two leaves lie in a flat plane which runs through the centre line of the two sleeve-types parts. The hinge pin is permanently attached to one of the sleeve-type parts, which makes it easier to install the hinge. Furthermore the hinge pin is shielded from attacks with cutting means such as a saw, whereby the safety of the hinge against burglary is increased. The possibility of left-handed or right-handed use is a consequence of the fact that each leaf is joined to the sleeve-type part precisely in the centre. In the closed position of the panel, the two leaves lie in one plane in line with each other. To achieve the required hanging gap, the leaves do not then have to be let in. Preferably each leaf extends besides and beyond the sleeve-type part joined to it in the direction away from the other sleeve-type part. In this way, at least some of the fixing openings are situated above and below the sleeve-type parts. The weight of the panel therefore hangs, as it were, above the centre of the split hinge. In order not to have any trouble from the heads of the fixing screws, the fixing openings are preferably countersunk at both sides in each leaf so that each leaf can be fixed from both sides. It is pointed out that split hinges which can be used for left and right are known, see US-A-4,424,607. In this hinge a hinge pin with a fixed collar in the middle is used. This hinge pin is not fixedly connected with one of the sleeve-type parts, which, moreover, is not closed at one end. In this way it is possible to turn the split-hinge, so that rotation to the right and to the left is possible. This is in contradiction to the split hinge according to the invention, whereby the sleeve-type part with the fixed hinge pin must be arranged always at the lower side and cannot be removed. Together with the closed sleeve-type parts a burglar proof split hinge is obtained. The invention will be illustrated in greater detail with reference to the drawing, in which: Figure 1 is an elevation of the split hinge according to the invention with the two leaves in line with each other; and Figure 2 is a section along the line II-II of Figure 1. Each half of the split hinge comprises a rectangular leaf 1 provided with a number of openings 2 intended for cold fixing the leaf 1 with screws, which are not shown, to a side edge of a panel or to the casing (both not shown). The openings 2 are countersunk at both ends, as shown in Figure 2. The leaf 1 is permanently joined to a sleeve-type part 3 which is closed at one end by an end cap 4. A hinge pin 5 which, in a design as a ball split hinge, rests via a ball 6 against a cap 4, is fitted in the two sleeve-type parts 3. In a design without a ball, the latter is missing and the pin 5 extends up to the cap 4', which is then identical to the cap 4. The hinge pin 5 consists of hardened steel and is fixedly connected to the lowest sleeve type part 3. Situated between the two sleeve-type parts 3 and around the pin 5 is a known spacing ring 7. In the position drawn in Figure 1, the two leaves are situated in line with each other and lie in the same plane. The centre of each sheet 1 lies in a plane which passes through the centre line of the pin 5 (see Figure 2). In the closed position of the panel, the leaves 1 lie in line with each other, that is to say not on top of each other as in standard split hinges. Since the leaf thickness is generally 3 mm, a hanging gap of 3 mm is obtained without letting into the panel and casing, and this is acceptable. The split hinges according to the invention can be used either for left-rotating or for right-rotating doors because the centre line of the sleeve-type parts lies precisely in the centre of the leaves and the leaves are staggered with respect to each other.

Claims: Split hinge, in particular ball split hinge, comprising two leaves (1) provided with fixing openings (2) and two sleeve-type parts (3) which are each closed at one end and jointly accommodate a hardened steel hinge pin (5), which is fixedly connected with one sleeve-type part (3), which leaves (1) are staggered with respect to each other in all positions, characterized in that between the two sleeve-type parts (3) and around the hinge pin (5) a spacing ring (7) is provided, and in that the centres of the two leaves (1) lie in a flat plane which runs through the centre line of the two sleeve-types parts (3). Split hinge according to Claim 1, characterized in that each leaf (1) extends besides and beyond the sleeve-part (3) joined to it in the direction away from the other sleeve-type part (3). Split hinge according to Claim 1 or 2, characterized in that the fixing openings (2) in each leaf (1) are countersunk at both sides.

Inventors: KRUYDER HERMAN JUSTUS, SITTER HARALD, KRUYDER, HERMAN JUSTUS, SITTER, HARALD
Applicants: AGENTUREN KRUYDER AMERSFOORT B, CHARMAG SA, AGENTUREN KRUYDER AMERSFOORT B.V., CHARMAG S.A.
Application year: 1990
Main classification: E05D7
IPC codes: E05D7