HINGE BETWEEN BONE AND CROWN OF SUNSHADES WITH A DIAMETER LARGER THAN 2 METERS

Abstract: The invention concerns a hinge between a bone (3) and crown (7) of sunshades having a diameter larger than 2.5 meters. For this purpose is used an attachment that is fastened to the bone. The notches (8) in this attachment cooperate with cams (9) of the crown (7) which form together a hinge. In the crown are notches which bear cams. The cams are on both sides flat. The pivoting parts (10) are on one side connected with the bone and on the other side foreseen with notches which cooperate with the cams of the crown. The cams on the crown and the notches in the pivoting parts form a detachable hinge. The pivoting parts have a hole (12) for the bone that reaches further than the center of the pivoting point. The arrangement is very suitable for metal or plastic die-cast.

Description: Hinge between bone and crown of sunshades with, a diameter larger than 2 aster The invention concerns a hinge between bone and crown of sunshades having a diameter larger than 2,5 meter. For this purpose is used an attachment that is fastened to the bone. The notches in this attachment cooperate with cams of the crown which form together a hinge. With well-known sunshades a galvanised wire is taken through holes in the bones. The bones are with the wire put around the crown and then the ends of the wire are turned around each other. The wire is in this way a turn-around shaft. This construction is unsuitable for larger sunshades. The use of pins as axis has as consequence that the crown enlarges which cause a disproportionate increase of the circumference of the folded sunshade. The invention provides for a hinge which reduces the diameter of the crown without doing concessions to the strength of the construction. For this purpose a attachment is developed that contains the elements of the hinge and to fasten reliable to the bone. The invention will be explained with the help of the drawing. Fig. 1 shows schematic the sunshade. Fig. 2 shows the crown with pivoting part and bone. Fig. 3 shows a larger version of Fig. 2. Fig. 4 shows the pivoting part with a tubular bone. Fig. 5 shows the construction with the crown. Fig. 6 shows a cross-section through the pivoting part. Fig. 7 shows a cross-section 7-7 through pivoting part. Fig. 1 shows schematic the sunshade with the foot (1), column (2), The bones <3) and the bone supports (4). At (5) and (6) is a crown which carry pivoting members with bones (3) and bone supports (4). In Fig. 2 the crown is indicated with (7). In crown (7) are notches ( 6). At the inside αf notch (8) cams <9> are made which face each other. The cams are circular with two flats opposite to each other. In the notch (8) fits a pivoting part (10). This pivoting part (10) is foreseen of of circular notches (11) which are foreseen of slits. Pivoting parts (10) are having a bore (12) to take up bone (3). Bore (12) reaches further than the centre of notch (11). Bone (3) is fixed with pin (13). In crown (7) is an opening (14) for the passage of column (2). At (5) is crown (7) permanent fixed with column (2) while at (6) the crown (7) is movable along column (2) to permit the folding up of the sunshade. In Fig. 3 is indicated a version of a larger type where bones (3) consists of thin-walled metal tube which is connected with a snapping fastener (15) to pivoting part (10). Fig. 4 shows bone (3) with pivoting part (10) in the position to carry out the assemblage with crown (7). In Fig. 5 is bone (3) shown in folded position. It is found that by using a deep bore (12) in pivoting part (10) a very solid construction is realised because notch (11) cannot bend away. The construction is very favourable for using die-casting, in plastic or metal. Especially at the assemblage of large sunshades the hinge is easy to put together and to handle.

Claims: Clains. 1. Hinge between bone (3) and crown (7) of sunshades which have a diameter of more than 2 meter characterised in that the pivot is composed by making in pivoting part (10) of bone (3) two notches (11) facing each other while the notches (8) in crown (7) are foreseen of two cams (9) facing each other which have the form of a shaft that is flattened on two sides while notches (11) in pivoting part (10) are circular and foreseen of slits permitting the passage of cams (9) where the diameter of cam (9) and the diameter of notch (11) join together. 2. Hinge characterised in that pivoting part (10) is foreseen of a bore ( 12 which reaches further than the centre of the pivoting point in which bone (3) with the help of pin (13) is fixed. 3. Hinge characterised in that pivoting part (10) is foreseen with a snapping fixture (15) for a thin-walled tube. 4. Hinge characterised in that the height of cams (9) and the depth of notches (11) are about one-fourth of the width of notch (8) in crown (7). 5. Hinge characterised in that crown (7) of the sunshade and pivoting part ( 10) are die-cast while bone (3) is made of fibreglass bars or aluminium tube.

Inventors: COENEN DANIEL CARL MARIE, COENEN, DANIEL, CARL, MARIE
Applicants: COENEN DANIEL CARL MARIE, MAXX WORLDWIDE, COENEN, DANIEL, CARL, MARIE
Application year: 1997
Main classification: A45B25
IPC codes: A45B23, A45B25