FI85746B - Hinge and security pin for door - Google Patents

Description

85746

DOOR HINGE AND SAFETY STAFF

gAnojähns- ooh säkerhetstapp for dörr

The invention relates to a door hinge and safety pin, the purpose of which is to prevent burglary in the apartment from the door hinge side and to prevent it from breaking quickly with modern equipment. »The pin protrudes 12 mm from the edge of the door and shrinks sharply at its attachment point and is relatively about 50 mm long. sawing, cutting or removing the hinge center pin and breaking it by twisting, explosives and sawing off the door completely. With rechargeable devices, sawing is fast and with little noise.

However, a known weakness of the hinge pin is that it has a weak holding capacity due to its shrinkage and does not reinforce the door itself. attached to pine wood to a depth of 13 mmm, Fracture strength calculations are based on the results obtained by VTT's metal laboratory, A sharp-fastened pin, depending on the hardness of the material, bends or bites into the wall of its hcl-25 bomb attachment point like a cylindrical pin. The object of the invention is to provide a hinge and safety pin, the holding capacity of the sparse and pine wood cavity wall has a holding capacity of about 0, 7 kN / mm e 27.5 kp / mm, 3 °. which does not have the above-mentioned weaknesses and that it also protects the door throughout and is difficult to cut from the door slot, e.g. with a steel disc machine »The invention is characterized by a rotatably mounted pin which is fastened to the side of the door by its bearing. There are a wide variety of bearing and fastening methods 5 »The most commonly used are ball and plain bearings, both of which are suitable for this purpose. In the ball bearing pin, the bearing is embedded in the side of the door and covered with a protective plate which is attached to the side of the door. The pin moves only sensitively in its direction of rotation. One of the most sinister fastening and bearing methods of the Yk-10 is to make a groove at a distance of 12 mmm in the round steel, into which a plate with a hole is pressed by force, which prevents the pin from moving in its longitudinal direction. However, the pin rotates on a plate from which it can be easily attached to both wooden and metal doors. The industrial manufacture of this type of pin is very advantageous.

After installing the bearing pin, a hole is made in the frame, into which it goes when the door is closed. The size of the hole is about 8-12 mm according to the diameter of the pin. The joint between the edge of the door and the frame thus formed lasts, with the pin being 0 6 x 50 mm, with a tensile strength of more than 5 kNm, the wall of the frame cavity being at least 18.5 mm. Since it has been found that the holding capacity of the cavity wall of a pine-type frame is about 0.27 kN / mm, it follows that the installation with three pins has a breaking strength * 5 x (18.5 x 0.27 kN) = 14.985 kN * 1529.1 kp. When the wall thickness of the frame cavity is 13.5 mm, = 3 x (13.5 x 0.27 kN) = 10.935 kN »1115.8 kp are obtained. In this way, the joint between the edge of the door and the frame is made break-proof and the rest of the door itself is reinforced throughout; With pins extending through 30 doors or shorter »

Adhesion of the pin to the edge of the door is very essential, as they are generally lightweight, with a strip around the edge to which the surface plates are attached. If the pin were not brought into place, it could easily slip into the cavity of the door 35, which has nothing but filler or rare support bars as reinforcement. # The pin would have no meaning. It becomes relevant when it can be rotatably attached to the edge of the door and their length extends even through the entire door. This also prevents mechanical break-ins through the door #

The invention will now be described in detail with reference to the accompanying drawing, in which Fig. 1 shows a pin prediction and frame recesses, Figs. 2 and 3 show a method of attaching a pin which has been replaced by a bearing #.

Figure 1 shows in diagrams! it s ti door '1 and frame 2, in which the door is fitted with hinge pins 3 »4, 5, the ends of which protrude (2 mm from the edge of the door # The frame 2 has cavities 8, 9, 10 made of pins 3» 4, 5 with a diameter of 8 - 12 mm and depth 15 mm, with Door 1 closed, the ends of the pins 3 »4, 5 are in their recesses 8, 9, 10 to prevent the edge of the door from opening after the hinges break # When the door is opened, the pins leave their holes. door for other activities »

Figures 2 and 3 show a pin mounting 3f 4, 5 mounted on the edge 11 of a lightweight door, to which the side plates 12 and 13 are fastened. with bearing pins 3 »4, 5» to be attached to the side 11, which are easily rotatable 25 when trying to cut through the door slot with a saw or rotating blade # The rotating feature of the pins prevents them from breaking or slows them down.

The invention is not limited to the forms shown, but variations are conceivable within the scope of the claims.

Claims (2)

4 85746 PATSrTTXVAATIMOTSBT 1. Banana of a door (1) and a "safety pin (3 * 4 * 5)" which is essentially attached to the side of the door in such a way that, when attached to a hole, it forms a pin projecting from the edge of the door (1) and extending arbitrarily to it (3 * 4 * 5 ) »Which, when the door is closed, goes into the recess (8.9 * 10) made in the frame (2) and connects the joint between the frame (2) and the door (l) and leaves it when the door is opened, characterized in that the pin (3,4 * 5) is rotatably mounted on a piece attached to the side of the door from which it does not move laterally during its rotation when it is touched by the saw blade or the blade of the blade machine during the attempt to cut the pin · Hinge and safety pin (3,4,5) of a door (1) according to claim 1, characterized in that the projecting pin (^ * 4 * 5) is thinner at its end (17) than at its attachment point (18) · * ♦ · PATENTKRAV 85746