HINGE FOR A CABINET DOOR

Abstract: An arrangement in a hinge for a door, preferably an outside cabinet door has a pivot axis arranged in a first slidable part in a telescopic arrangement, attached to the cabinet wall, and a link arranged between the door and a second slidable part in the telescopic arrangement, the link acting on the first part, connected to the pivot axis in the telescopic arrangement, so that the axis is displaced out from the cabinet wall in an opening movement. A toothed segment (43) is attached to the wall (11) and a first part of the telescopic arrangement is slidably arranged along the wall (11) and has a toothed wheel (48) carried in said part and arranged to engage the toothed segment (43). The second part of the telescopic arrangement has a toothed rack (58) in engagement with the toothed wheel (48) and is connected to the door (12) by the link (28). The link (28) has two pins (70, 72) each guided in a guiding groove (71, 73) in the door (12), the centre lines of the pins being vertical and crossing the link at a distance from each other.

Description: Hinge for a cabinet door The present invention relates to an arrangement in a hinge for a door, preferably an outside cabinet door, with a pivot axis arranged in a first slidable part in a telescopic arrangement, attached to the cabinet wall and a link arranged between the door and a second slidable part in the telescopic arrangement, the link acting on the first part connected to the pivot axis in the telescopic arrangement, so that the axis is displaced out from the cabinet wall in an opening movement, a toothed segment being attached to the wall and a first part of the telescopic arrangement being slidably arranged along the wall and having a toothed wheel carried in said part and arranged to engage the toothed segment, and further the second part of the telescopic arrangement having a toothed rack in engagement with the toothed wheel and connected to the door by the link. Particularly in an outside door it is desirable to be able to open the door about 170° independently of adjacent doors at both sides and also outside the movement path for inserting or drawing out a shelf in the cabinet. There are hinges for that purpose but they have a lever mechanism, the arms of which during the door movement make a curve into the cabinet. This serious drawback is removed by the present invention which is mainly characterized therein that the link has two pins each guided in its guiding groove in the door, the centre lines of the pins being vertical and crossing the link at a distance from each other. The invention will be described in detail in the following with reference to a hinge shown in the drawings. Fig. 1 is a horizontal section showing a hinge for a left-hand outside door which is closed. Fig. 2 is a picture of the same hinge seen from the right side. Fig. 3 shows the hinge seen from inside the cabinet in the direction to the door. Fig. 4 is a vertical section through the door along the line IV - IV in Fig. 1. Fig. 5 is a view of the door edge seen from the left with attached hinge. Fig. 6 is a view similar to Fig. 1 but with the door open. Fig. 7 is a horizontal section through a row of cabinets with doors. Figs. 8 and 9 show a cover for the hinge door bracket in two different views. Fig. 10 shows a model for cutting out a guiding slide from a metal sheet. Fig. 10a shows the sheet bent to a guiding slide. Figs. 11 and 12 show the slide with a toothed wheel in two different views. Figs. 13 - 17 show a wall bracket with toothed segment in different views. Figs. 18 - 21 show different pictures of a slide with cog railway. Figs. 22 - 31 show the two parts of a door bracket in different views. Figs. 32 and 33 show a link. Figs. 34 and 35 show schematically how the link moves in relation to the door. The hinge 10 shown in Fig. 1 is attached to a wall 11 and to a door 12. Below the hinge there is a shelf 13 or the bottom in the cabinet which is limited by the wall 11 and the door 12. The hinge 10 has a door bracket 14 of which the major part is inserted in the door 12. Fig. 2 shows the appearance of the hinge placed on the wall 11. In Fig. 3 the hinge is shown attached to the door 12. A circle 15 denotes a circular boring on the inside of the door in which the door bracket 14 is inserted. The door bracket also has a flange 16 with holes 17 for screws. Against the wall side, not shown, lies a flange 18 which forms part of a wall bracket. The flange 18 and the mechanism in the hinge are covered by a cover 19 and both this cover and the flange 18 have holes 20 and 21 for attachment screws. The door bracket 14 is formed by two parts 22 and 23 which are placed together along a horizontal plane 24. In a section through the door along the line IV - IV in Fig. 1 the door bracket 14 looks as Fig. 4 shows. The details in the mechanism appear better from Figs. 22 - 31 and ' will be described more in detail in connection with these Figures. In Fig. 5 the vertical edge of the door 12 at the hinge-side is shown with the parts 22 and 23 of the door bracket attached to the door at the wall-side of the flange 18. Further, the edge of the cover 19 is shown which lies behind the wall bracket in the Figure. The door 12 can, as shown in Fig. 6, be opened about 170 from the closed position. The door has a pivot axis 25 in the door bracket and situated in the door. The door has a connection with the wall 11 by two arms 26 pivotably mounted on the pivot axis 25, these arms forming an extension of a guiding slide 27, which is telescopically movable. The door movement also is guided by a link 28 which will be described in the following. Fig. 7 is intended to show the principle of the door movement and therefore the hinge details are not shown. The door is shown in closed position to a cabinet with the left-hand wall 11, a shelf 13 and a wall 11a to the right, and in an entirely open position like in Fig. 6. To the left of the cabinet is an adjacent cabinet with a wall 29 and a door 30 and to the right another adjacent cabinet with a wall 31 and a door 32. The door 12 is moved from the closed position to the open one by a handle 33 being pulled straight out from the cabinet. Due to the shape of the hinge according to the invention the pivot axis 25 of . the door describes a curve 34. This means that the door is first turned so much, that its right-hand edge with the handle 33 is free of the door 32 and thereafter the pivot OMPI axis is moved somewhat to the right simultaneously with the turning of the door. The axis is also moved out from the cabinet in accordance with the curve 34. The cover 19 for the wall bracket shown in Figs. 8 and 9 has a part 35 which is U-shaped in section and surrounds the mechanism, and two flanges 36 and 37 with holes 20 and an edge flange 38, 39 at the outer edges of the flanges 36, 37. The cover 19 surrounds a wall bracket shown in Figs. 13 - 17 which has been mentioned before in connection with Figs. 3 and 5. It comprises the flange 18 with the holes 21 for screws. The wall bracket on the cabinet side has an longitudinal prismatic part 40 of rectangular cross section. As shown in Fig. 14 this prism at two opposite sides has two continuous similar curved grooves 41, 42 which are situated after each other and arc-shaped.These grooves also appear in the cross section in Fig. 16. The grooves 42 extend at both sides out on the door side of the prism so that guiding pins can be inserted into the grooves. Parallel to the grooves 42, which are situated closest to the door, the prismatic part 40 has a central toothed segment 43. The guiding pins which are intended to move in the curved grooves 41, 42 form part of the slide 27 which is shown in Fig. 6. The shape of the slide 27 appears from Figs. 10 - 12. It is cut out from an even metal sheet (Fig. 10) which is bent along two lines 44, 45, to the appearance shown in Figs. 10a, 11 and 12. Four guiding pins 46 are arranged in ears 47. A toothed wheel 48 is rotatably arranged on an axis 49. When mounting the slide 27 on the wall bracket the two pins 46 situated at the end of the slide 27 are moved into the curved grooves 42 of the wall bracket, and thereafter the guiding slide is moved over the prismatic part 40, so that also the other pair of guiding pins 46 of the slide are moved into the groove 42, the first pair of pins moving into the grooves 41 in the wall bracket. In order to give room for the ears 47 of the guiding slide in the flange 18 of the wall bracket cut-outs 50, 51, 52 are provided on each side of the prismatic part 40. In the metal sheet cut to form the guiding slide 27 two holes 53 are made for the axis 49 intended for the toothed wheel 48. The sheet comprises the said guiding arms 26 with holes 54 for the pivot axis 25 of the door. In the metal sheet there are also two parallel slots 55 which are angled at their ends and the sheet flanges thus formed are bent in as shown in Figs. 11 and 12 to form two opposite guides 56. Between the guiding arms 26 part of the sheet is cut away so that lugs are formed which after bending down form guides 57 (Fig. 12). In Figs. 18 - 21 a slide 58 is shown intended to be inserted with one end 59 in the space situated between the bottom part 60 of the guiding slide and the wheel 48 in Fig. 11. The end of the slide 58 turned to the door is formed like a fork 62 with holes 63 for an axis 65 (Fig. 20) which passes through a hole 64 in the link 28 (Figs. 32a and 33). The slide 58 at two sides has grooves 66 turned to each other in which the slide 58 can slide in the guides 56, 57 at the slide 27. In Figs. 22 - 31 the two parts 22 and 23 are shown put together forming the door bracket for the hinge. Put together as shown in Figs. 3 and 4 they form a cylindrical part with the flange 16 with the holes 17 for the attachment screws. In the cylindrical part there is a cross-hole 25a for the pivot axis 25. At the axis the two guiding arms 26 turn (Figs. 10 - 12). When the door is closed these arms move into slots 67 in the door bracket and also a part of each guide 57 moves into an angled part 68 of the slot 67. In the door bracket at each side of the separation plane there is a cut-out 69. The two parts 22, 23 are symmetrical except for these cut-outs, as appears from Figs. 30 and 31. When attaching the parts 22, 23 the link 28 is inserted between the parts (Figs. 32 and 33). Thereby a pin 70 at the link is located in a circular curved groove 71 in the part " 23 and another pin 72 at the other side of the link 28 in another circular curved groove 73 in the other part 22. When the parts 22, 23 of the door bracket are together with the link 28 therebetween, the link can be turned in its own plane in the door. This is so because the arc of the first curved groove 71 has its centre 74 in a point at the second curved groove 73 and the arc for this second groove 73 has its centre 75 in the first curved groove 71. When the door is closed (Fig. 34) the pin 70 is situated on this side of the link 28 in the centre 75 of the groove 71 and the pin 72 is situated at the other side of the link in a point 76 in the second groove 73. When the door is opened it moves in relation to the link 28. Turning occurs and thereby the pin 70 will not move but rest in its groove 71, whereas the pin 72 moves in the groove 73 to the point 74 in the second end of the groove 71. Thereafter the pin 72 is resting (Fig. 35), whereas the pin 70 moves in the groove 71. During the opening movement of the door from the closed position shown in Fig. 34 to the position shown in Fig. 35, where the door is opened more than 90 but not completely open, the slide 58 with the link 28 moves out from the cabinet. However, the door can be opened more and then it is turned around the axis 25 which is resting in its position in relation to the cabinet. The link 28 is turned around its axis 65, whereby this other end of the link with the pins moves closer to the cabinet, whereas the pin 70 moves further in the groove 71 to the end of the groove. _cι.σι When the door is to be closed the angle between the link 28 and the slide 58 in the pivot point, the axis 65, is too large to allow the slide to move into the hinge mechanism after pressure on the link in the direction to the pivot point. Instead the door acts as a lever between the pin 72 on the link and the pivot axis 25, which has the consequence that the pivot axis is pressed in against the cabinet and acts on the telescopic mechanism, so that the slide 58 is pulled into the mechanism, whereby the link follows. When the door is closed the parts thus move to the starting position in the order opposite to that described for the opening movement of the door. The design of the mechanism according to the invention with a link, the end of which in the door has two different pins guided in two different grooves, thus makes it possible to open the door through a very large angle, which is known per se. When using the invention, however, it is possible to have the mechanism operate very smoothly, in spite of the fact that there is a large angle between the link and the corresponding part in the telescopic arrangement. Beside the fact that the hinge operates well it is achieved that the wearing between the parts which are subject to most wear will be a minimum, which is a great advantage for a safe function and a long lifetime for the hinge. In the foregoing description of the invention the design and co-operation of the parts have been stated in one single embodiment but, of course, the details can be varied in many ways, provided the co-operation between the parts is still the one forming the ground for the invention. The described hinge has an essential quality, which is not present in known hinges which are intended to fulfil the requirements mentioned by way of introduction. During the opening movement or closing movement of the door there are no arms to swing or turn into the cabinet. Part of the mechanism slides a few millimetres to the side, but if a cover 19 is used, which is not necessary, no movement at all in the cabinet space is observable. The movement occurs inside the cover. G^FI

Claims: Claims 1. Arrangement in a hinge for a door, preferably an outside cabinet door with a pivot axis arranged in a first slidable part in a telescopic arrangement, attached to the cabinet wall, and a link arranged between the door and a second slidable part in the telescopic arrangement, the link acting on the first part, connected to the pivot axis in the telescopic arrangement, so that the axis is displaced out from the cabinet wall in an opening movement, a toothed segment (43) being attached to the wall (11) and a first part of the telescopic arrangement being slidably arranged along the wall (11) and having a toothed wheel (48) carried in said part and arranged to engage the toothed segment (43), and further the second part of the telescopic „ arrangement having a toothed rack (58) in engagement with the toothed wheel (48) and connected to the door (12) by the link (28), charac¬ terized therein, that the link (28) has two pins (70,72) each guided in a guiding groove (71,73) in the door (12), the centre lines of the pins being vertical and crossing the link at a distance from each other. 2. Arrangement according to Claim 1, characterized therein, that the guiding grooves (71,73) are horizontal and arranged in the door (12) between its inner and outer surfaces. 3. Arrangement according to Claim 1, characterized therein, that the link (28) is formed by a metal sheet and that it has a pin (70,72) on each side. 4. Arrangement according to Claim 1, characterized therein, that the guiding grooves (71,73) have the shape of arcs. 5. Arrangement according to Claim 4, characterized therein, that the two arcs have the same radius and that each arc has its centre in a point at the other arc. 6. Arrangement according to Claim 5, characterized therein, that the distance between the centre lines of the pins (70,72) equals the radius of the arcs. 7. Arrangement according to Claim 5, characterized therein, that the ends of the arcs closest to the outside of the door are at the distance of the radius from each other. 8. Arrangement acccordϊng to Claim 5, characterized therein, that the ends of the arcs situated at the inner side of the door partly cross each other. 9. Arrangement according to Claim 1, characterized therein, that the link (28) is arranged at the opening movement of the door first to turn in relation to the door around the pin (70) situated most distant from the pivot axis (25) of the door, whereby the other pin (72) moves in its groove (73) from one end to the other, which is situated in the centre of the arc of the first groove (71). 10. Arrangement according to Claim 9, characterized therein, that the link (28) is arranged at the second part of the opening movement to move around the pin (72), which is situated closest to the pivot axis (25), the pin (72) being in the centre of the arc of the first groove (71) and the first pin (70) moving in this • groove.

Inventors: LEINFELT KARL ERIC, LEINFELT, KARL, ERIC
Applicants: ELECTROLUX AB, AKTIEBOLAGET ELECTROLUX
Application year: 1982
Main classification: E05D3
IPC codes: E05D3