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(11) | EP 0 399 472 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) |
Door assemblies Türeinheit Montage de porte |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
[0001] This invention is concerned with improvements relating to door closing mechanisms. The invention has been devised particularly in relation to the provision of a simple but reliable door closing mechanism for a door assembly of the kind commonly found in locker rooms. It is however to be appreciated that the door closing mechanism the subject of this invention may be utilised for doors in general terms, such as cupboard doors.
[0002] There is disclosed in FR-A-1444727 a door closing mechanism comprising a helical spring, one leg of which engages a fixed abutment and the other leg engages the door to exert on the door a closing force. Difficulty however is encountered when it becomes necessary to replace the spring.
[0003] According to this invention there is provided a door closing mechanism for a door assembly comprising a frame and a door pivotally mounted on the frame, wherein the door closing mechanism is capable of being separated from the door assembly as a sub-assembly without disassembling of the door from the frame, said door closing mechanism comprising:
a) a support member;
b) securing means for securing the support member to the door assembly;
c) a spindle supported by the support member; and
d) a coil spring coiled around the spindle, one end of the coil spring being held captive with the closing mechanism and the other end engaging the door assembly to exert a door closing force.
[0004] Preferably the coil spring is located on or closely adjacent to the axis about which the door rotates, on movement thereof between its open and closed positions.
[0005] Preferably the construction and arrangement is such that the door closing force is exerted as a force tending to cause the spring to unwind.
[0007] Preferably the closing mechanism comprises a support member, including a spindle on which the spring is coiled, and a flange adapted to be secured to the door e.g. by the use of a screw.
[0008] Conveniently the spindle is in the form of a split pin, between the legs of which one (inner) end of the spring is conveniently located.
[0009] Preferably the frame comprises a hinge formation providing a concave-curved surface and the door comprises a complementary hinge formation providing a convex-curved surface adapted to seat against that of the hinge formation of the frame.
[0011] Preferably a substantial part at least of the coil spring is located within the circumferential boundary of the hinge formation, and preferably the axis of the coil spring is located close to (i.e. within 10mm of, and preferably within 2mm of) the axis of closing movement of the door. In this manner a compact construction of door closing mechanism may be obtained.
[0012] There will now be given a detailed description, to be read with reference to the accompanying drawings, of a door assembly comprising a door closing mechanism which is a preferred embodiment of this invention, having been selected for the purposes of illustrating the invention by way of example.
[0013] In the accompanying drawings:
FIGURE 1 is a schematic perspective view, showing part of a door frame of the assembly, a door thereof, and hinge mechanism therefor;
FIGURE 2 is a plan view taken on Figure 1, showing the door in a closed position;
FIGURE 3 is a view corresponding to Figure 2 showing the door in an open position; and
FIGURE 4 is a view of part of the door frame, showing the cut-away mounting of the door closing mechanism.
[0014] The door closing mechanism which is the preferred embodiment of this invention is for a door assembly comprising a door frame 2 comprising a hinge formation 4 providing a concave-curved surface 6, an opening 8 being provided into the interior of the hinge formation, said opening being bounded on one edge on a lip 10.
[0015] Also located within the hinge formation is a secondary convex bearing surface 12, having a centre closely adjacent to that of the surface 6.
[0016] The door 14 comprises a complementary hinge formation 16 providing a convex-curved outer surface 18, which together with a secondary convex bearing surface 20 may be engaged within the hinge formation 4 to allow pivotal movement of the door relative to the frame about (in use) a vertical axis, the surfaces 6 and 18 being in sliding engagement, together with the surfaces 12 and 20.
[0017] Provided in the door 14, opening through the hinge formation 16 is a recess 22, adjacent to which is a bore 24.
[0018] The door closing mechanism of the preferred embodiment, indicated by the general reference numeral 30, comprises a bracket 32 having an outer flange 34, and spaced, parallel arms 36 between which a spindle, in the form of a split pin 38, extends. Mounted around the spindle 38 is a coil spring 40, an inner end of which being located between the legs of the split pin, and the outer end thereof being provided with a hook formation 42.
[0020] In the assembly of the door, door frame and door closing mechanism, the hinge formation 16 of the door is located within the hinge 4 of the door frame, allowing arcuate movement of the door relative to the frame about a longitudinal axis, between an open and closed position of the door.
[0021] With the door in its fully open position, to present access to the recess 22, the arms 36 of the bracket 32, together with the coil spring carried thereby, are moved into the recess 22 within the peripheral confines of the concave-curved surface 6 of the door hinge formation, and the hooked outer end 42 of the coil spring is located against the lip 10 of the formation 4. The door closing mechanism is located further within the confines of the surface 6, and the flange 34 is pressed against the door frame, with the bore 44 in alignment with the bore 24, the flange being secured to the door frame by the use of a rivet (not shown). In this position the coil spring is located substantially on the longitudinal axis of the door closing movement i.e. within 2mm of said axis, and the force tending to uncoil the spring is operative to urge the door to its closed position, shown in Figure 2.
[0022] Should the need arise to replace the coil spring, the door closing mechanism 30 may simply be removed by removal of the screw, and angling the door so that the mechanism 30 may be removed from the hinge mechanism, the split pin removed and a fresh coil spring replaced thereon, for reassembly with the door.
1. A door closing mechanism (30) for a door assembly comprising a frame (2) and a door
(14) pivotally mounted on the frame, wherein the door closing mechanism (30) is capable
of being separated from the door assembly as a sub-assembly without disassembling
of the door from the frame, said door closing mechanism comprising:
a) a support member (34);
b) securing means (24, 44) for securing the support member to the door assembly;
c) a spindle (38) supported by the support member; and
d) a coil spring (40) coiled around the spindle (38), one end of the coil spring being held captive with the closing mechanism and the other end (42) engaging the door assembly to exert a door closing force.
2. A door closing mechanism according to Claim 1 wherein the coil spring (40) is located
on or closely adjacent to the axis about which the door rotates, on movement thereof
between its open and closed positions.
3. A door closing mechanism according to one of Claims 1 and 2 wherein the construction
and arrangement is such that the door closing force is exerted as a force tending
to cause the spring to unwind.
4. A door closing mechanism according to any one of the preceding claims wherein the
spindle (38) is in the form of a split pin, between the legs of which said one end
of the spring (40) is located.
5. A door closing mechanism according to any one of the preceding claims wherein the
frame (2) comprises a hinge formation (4) providing a concave-curved surface (6) and
the door comprises a complementary hinge formation (16) providing a convex-curved
surface (18) adapted to seat against that of the hinge formation of the frame.
6. A door closing mechanism according to Claim 5 wherein a substantial part at least
of the coil spring (40) is located within the circumferential boundary of the hinge
formation.
7. A door closing mechanism according to Claim 6 wherein the axis the coil spring is
located within 10mm of the axis of closing movement of the door.
8. A door closing mechanism according to any one of Claims 5, 6, and 7 wherein the hinge
formation (4, 16) of both the frame (2) and the door (14) are axially elongate.
1. Türschließmechanismus (30) für eine Türanordnung mit einem Rahmen (2) und einer Tür
(14), die schwenkbar in dem Rahmen gelagert ist, wobei der Türschließmechanismus (30)
von der Türanordnung als Baugruppe entfernt werden kann, ohne die Tür vom Rahmen zu
trennen, wobei der Türschließmechanismus enhält:
a) ein Tragelement (34),
b) Befestigungsmittel (24, 44) zum Befestigen des Tragelementes an der Türanordnung,
c) einen Zapfen (38), der von dem Tragelement gehalten ist, und
d) eine Spiralfeder (40), die um den Zapfen (38) gewickelt ist, wobei ein Ende der Spiralfeder mit dem Schließmechanismus gehalten wird und das andere Ende (42) mit der Türanordnung in Verbindung tritt, um eine Türschließkraft auszuüben.
2. Türschließmechanismus nach Anspruch 1, wobei die Spiralfeder (40) auf oder eng benachbart
zur Achse, um die die Tür sich bei ihrer Bewegung zwischen ihrer offenen und geschlossenen
Position dreht, angeordnet ist.
3. Türschließmechanismus nach einem der Ansprüche 1 und 2, wobei der Aufbau und die Anordnung
derart ist, daß die Türschließkraft als Kraft ausgeübt wird, die die Feder veranlaßt,
sich abzuwickeln.
4. Türschließmechanismus nach einem der vorangehenden Ansprüche, wobei der Zapfen (38)
als Splintstift ausgeführt ist, wobei zwischen seine Beine ein Ende der Feder (40)
angeordnet wird.
5. Türschließmechanismus nach einem der vorgehenden Ansprüche, dadurch gekennzeichnet,
daß der Rahmen (2) eine Scharnieranordnung (4) enthält, die eine konkavgewölbte Fläche
(6) besitzt und die Tür eine entsprechende Scharnieranordnung (16) enthält, die eine
konkav-gewölbte Fläche (18) enthält, die dazu vorgesehen ist, gegen diejenige der
Scharnieraufhängung des Rahmens zu sitzen.
6. Türschließmechanismus nach Anspruch 5, wobei wenigstens ein wesentlicher Teil der
Spiralfeder (40) innerhalb der Außengrenzen der Scharnieranordnung angeordnet ist.
7. Türschließmechanismus nach Anspruch 6, wobei die Achse der Spiralfeder innerhalb eines
Abstandes von 10 mm von der Achse der Schließbewegung der Tür angeordnet ist.
8. Ein Türschließmechanismus nach einem der Ansprüche 5, 6 und 7, wobei die Scharnieranordnung
(4, 16) sowohl des Rahmens (2) und der Tür (14) in Achsenrichtung länglich sind.
1. Mécanisme de fermeture de porte (30) pour un agencement de porte comprenant un dormant
(2) et une porte (14) montée sur pivot sur le dormant, dans lequel le mécanisme de
fermeture de la porte (30) peut être séparé de l'agencement de porte en tant que sous-ensemble
sans démonter la porte du dormant, ce mécanisme de fermeture de porte comprenant :
a) un organe de support (34);
b) des moyens (24, 44) pour fixer l'organe de support à l'agencement de porte;
c) un axe (38) supporté par l'organe de support ; et
d) un ressort à boudin (40) enroulé autour de l'axe (38), une extrêmité du ressort à boudin étant retenue prisonnière par le mécanisme de fermeture et l'autre extrêmité (42) coopérant avec l'agencement de porte pour exercer une force de fermeture de la porte.
2. Mécanisme de fermeture de porte selon revendication 1, dans lequel le ressort à boudin
(40) se trouve sur l'axe ou tout prés de l'axe autour duquel tourne la porte, lors
de son mouvement entre ses positions ouverte et fermée.
3. Mécanisme de fermeture de porte selon une des revendications 1 et 2, dans lequel la
construction et l'agencement sont tels que la force de fermeture de la porte est exercée
en tant que force tendant à faire dérouler le ressort.
4. Mécanisme de fermeture de porte selon une quelconque des revendications précédentes,
dans lequel l'axe (38) est en forme de goupille fendue entre les branches de laquelle
se trouve une extrémité du ressort (40).
5. Mécanisme de fermeture de porte selon une quelconque des revendications précédentes,
dans lequel le dormant (2) comprend une structure à charnière (4) assurant une surface
cintrée concave (6) et la porte comprend une structure à charnière complémentaire
(16) assurant une surface cintrée convexe (18) adaptée pour s'appuyer contre celle
de la structure à charnière du dormant.
6. Mécanisme de fermeture de porte selon revendication 5, dans lequel une partie importante
au moins du ressort à boudin (40) se trouve dans la limite périphérique de la structure
à charnière.
7. Mécanisme de fermeture de porte selon revendication 6, dans lequel l'axe du ressort
à boudin se trouve à moins de 10 mm de l'axe du mouvement de fermeture de la porte.
8. Mécanisme de fermeture de porte selon une quelconque des revendications 5, 6 et 7,
dans lequel les structures à charnière (4, 16) aussi bien du dormant (2) que de la
porte (14) sont allongées axialement.