EP3017131B1

EP3017131B1 - Cushioned coupling hinge

Info

Publication number: EP3017131B1
Application number: EP14758651.5A
Authority: EP
Inventors: Arduino Antonio DONATI
Original assignee: Cominotti Srl
Current assignee: Cominotti Srl
Priority date: 2013-07-04
Filing date: 2014-06-20
Publication date: 2019-04-17
Anticipated expiration: 2034-06-20
Also published as: EP3017131A1; ITBS20130093A1; WO2015001445A1

Description

The present invention relates to a cushioned coupling hinge for hingeing the seat or lid of a WC.
In the health sector coupling hinges are used to hinge the seat (or ring) and lid thereof to the bowl of the WC. These hinges allow a rotation of the seat/lid in relation to the bowl, from a horizontal closed position, resting on the rim of the bowl, to a substantially vertical open position, in which the seat/lid is open to about 90 degrees and usually propped up against the wall to which the WC is joined.
To prevent the seat/lid from falling back onto the bowl as the result of a slight movement and damaging the ceramic or itself, it is known of to use cushioned hinges which cushion the return movement of the seat/lid, accompanying it in the descent thereof as far as the rim of the bowl.
The known hinges, to achieve a cushioning effect, using mainly viscous liquids, placed inside special chambers. US 2003/126717 A1 discloses a hinge for toilet of this type.
Such solutions of the prior art are however complex and expensive to implement since the chambers containing the liquid require special expedients to ensure their water-tightness over time. In addition, such liquid solutions, requiring a substantial housing space, make the hinges particularly large and bulky.
Many of the known hinges also have the drawback that the cushioning system acts constantly on the hinge movement regardless of its angular position and thus even when the seat/lid is moved to the vertical open position. Consequently, even lifting the seat/lid is slowed down by the presence of the traditional-type cushion. US 4 639 147 A discloses a hinge for toilet with constantly acting frictional braking.
US 2006/112518 A1 discloses a compact cushioned coupling hinge for electronic device.
The purpose of the present invention is to resolve the problems of the prior art taking into account the needs of the sector.
In particular, the purpose of the present invention is to make a coupling hinge which is particularly compact and effective in its cushioning action.
Such purpose is achieved by a coupling hinge made according to claim 1. The dependent claims describe preferred or advantageous embodiments of the hinge.
The characteristics and advantages of the cushioned coupling hinge according to the present invention will be evident from the description given below, by way of a non-limiting example, according to the appended drawings, wherein:

figure 1 shows an axonometric view of a coupling hinge according to the present invention, applied to a seat/lid of a WC;
figure 2 shows an axonometric view of a coupling hinge, which is not part of the present invention, applied to a drop-front door of a cabinet;
figure 3 shows an exploded view of a coupling hinge according to an embodiment of the present invention, wherein the cushioning mechanism is applied to the lid;
figure 4 shows an exploded view of a coupling hinge according to an embodiment of the present invention, wherein the cushioning mechanism is applied to the seat;
figure 5 shows an exploded view of a coupling hinge according to an embodiment of the present invention;
figures 6a and 6b respectively show a cross-section of the cushioned mobile element and of the fixed element of the cushioning mechanism of the hinge in figures 3 and 4;
figure 7 shows an axonometric view of the elastic element of the cushioning mechanism of the hinge according to an embodiment of the present invention;
figures 8a to 8c show the cushioning mechanism of the hinge during the closing phases of the seat/lid;
figures 9a and 9b respectively show the extension of the cross-sections shown in figure 8b and 8c;
figure 10 shows an exploded view of a coupling hinge according to the present invention in a further embodiment variant;
figures 11 and 11a respectively show an exploded view and a detail of the coupling hinge according to the present invention, in yet a further embodiment variant.

With reference to the appended drawings, reference numeral 1 globally denotes a cushioned coupling hinge, for the seat or lid of a WC.
Figure 1 shows the application of a pair of hinges 1 to a WC 150 fitted with a seat (or ring) 151, lid 152 and bowl 154. Each hinge 1 hinges the seat 151 and relative lid 152 to the bowl 154. Being fitted with a cushioning mechanism, the hinge 1 cushions the return movement of the seat 151 or lid 152, accompanying it during the rotation around the rotation axis X, in the descent from a substantially vertical open position to a substantially horizontal closed position, resting on the rim 153 of the bowl 154.
The term "seat" is understood to mean the ring portion that is used to avail of the WC in a seated position; the term "lid" means the element fitting over the seat suitable to close the WC.
Figure 2 shows the application of at least one hinge to a drop-front cabinet 60, with a door 61 and a frame 62. The hinge 1 hinges the door 61 to the frame 62. Being fitted with a cushioning mechanism, the hinge 1 cushions the return movement of the door 61, accompanying it during the rotation around the axis X, in the descent from a substantially vertical closed position to a substantially open horizontal position.
The term "mobile component" means a component designed to rotate around a rotation axis X, e.g. a seat 151 or a lid 152 of a WC 150.
The term "fixed component" means for example the bowl 154 of a WC 150.
As shown in Figure 3, the hinge 1 comprises:

a first element 20, suitable to be integrally constrained in rotation to a mobile component to be cushioned, so as to rotate with it in relation to a rotation axis X, or a fixed component;
a second element 30, suitable to be integrally constrained to a fixed component, or suitable to be integrally constrained in rotation to a mobile component to be cushioned so as to rotate with it around a rotation axis X;
an elastic element 50, positioned between the first element 20 and the second element 30;

In an embodiment variant shown in figures 3 and 4, the hinge 1 also comprises a free mobile element 40, suitable to be integrally constrained in rotation to a mobile component so as to rotate therewith in relation to the rotation axis X.
The first element 20 comprises a body 21, preferably cylindrical, provided with a chamber 23, preferably cylindrical, suitable to house within it the elastic element 50 and, at least partially, the second element 30. Preferably, both the body 21 and the chamber 23 extend longitudinally along the rotation axis X.
The body 21 is fitted with a tooth 24, protruding from the inner circular wall 231 towards the inside of the chamber 23, in the direction of the rotation axis X.
The body 21 further comprises a seat 25, provided with an inner lumen 251, preferably threaded, suitable to house an attachment element, for example a screw 80. The seat 25 is a cylindrical element protruding from the bottom 232 of the chamber 23 and coaxial to the body 21 and the chamber 23.
In an embodiment variant, the first element 20 comprises an attachment portion 22, suitable to be attached to a fixed component or a mobile component.
In the variant shown in figures 3 and 4, the attachment portion 22 is a lever which extends from the outer wall 211 towards the outside of the body 21, radially in relation to the rotation axis X. Preferably, the attachment portion 22 is fitted with at least one hole 221 for housing an attachment element to couple the first element 20 to a mobile component. In the variant in figure 3, the first element 20 is attachable to the lid 152, and the free mobile element 40 is attachable to the seat 151. In the variant in figure 4, the first element 20 is attachable to the seat 151, and the free mobile element 40 is attachable to the lid 152. Applying the hinge in figure 3 to one side of the WC 150 and the hinge in figure 4 to the other side, a WC is obtained wherein both the seat and the lid are cushioned during the descent phase until they rest on the rim of the bowl.
In the variant shown in figure 5, the attachment portion 22 is an insert which extends from the bottom 212 of the body 21 longitudinally in relation to the rotation axis X. Preferably, the attachment portion 22 is fitted with at least one interlocking joint 222 (or key) to form a shaped coupling between the first element 20 and the mobile component. In particular, the attachment portion 22 is suitable to be inserted in a dedicated seat (not shown) provided in the mobile component, the seat having the same shape (or key) as the attachment portion 22 to form a shaped coupling therewith. In the variant in figure 5, the first element 20 is insertable simultaneously both in a special seat provided in the seat 151 and in a special seat provided in the lid 152. One of the two seats has a shape (or key) suitable to couple to the shape (or key) of the attachment portion 22 of the mobile element 20, the other seat is substantially cylindrical, so as to allow the free rotation around the attachment portion 22 of the mobile element 20. Applying the hinge in Figure 5 to one side of the WC 150 (wherein the seat 151 is provided with a seat with a shape complementary to that of the mobile element 20 and wherein the lid 152 is provided with a circular seat) and the same hinge to the other side also (wherein the lid 152 is provided with a seat having a complementary shape to that of the mobile element 20 and wherein the seat 151 is provided with a circular seat), a WC is obtained in which the seat and the lid are cushioned in the descent phase until they rest on the rim of the bowl.
In a further embodiment, the body 21 is in one piece with the mobile component or with the fixed component; the first element 20 is thus without the attachment portion 22.
In the variant shown in figure 10, the body 21 of the first element 20 coincides with a support 70 provided on the fixed component. The support 70 thus comprising the chamber 23 suitable to house therein the elastic element 50 and, at least partially, the second element 30. Such variant is usable in particular for plastic or thermosetting seats. In such variant, the first element 20 is fixed, while the second element 30 is rotatable about the rotation axis X.
The second element 30 comprises a body 31, preferably of a cylindrical shape, suitable to be inserted at least partially in the chamber 23 of the first element 20. The body 31 is provided with a tab 34, protruding from the outer circular wall 331, towards the outside of the body 31. The body 31 further comprises a bottom 37.
As shown in Figure 6b, the second element 30 has an inner lumen 33 suitable to house an attachment element. Preferably, both the body 31 and the inner lumen 33 extend longitudinally along the rotation axis X.
In an embodiment variant, the second element 30 comprises an attachment portion 32, suitable to be attached to a fixed component or a mobile component. The attachment portion 32 extends from the bottom 37 of the body 31, longitudinally along the rotation axis X. Preferably the attachment portion 32 has an outer diameter greater than the body 31.
The attachment portion 32 is also provided with an inner lumen 35, suitable to allow the passage of an attachment element. The inner lumen 35 extends longitudinally along the rotation axis X, as a continuation of the inner lumen 33. Preferably, the inner lumen 35 has a greater diameter than the inner lumen 33.
In the variant shown in figures 3 and 4, the attachment portion 32 has a substantially cylindrical shape and is provided with a hole 321 for housing an attachment element to couple the second element 30 to a fixed component. The hole 321 passes through the entire attachment portion 32, in a direction substantially orthogonal to the rotation axis X.
Preferably, the second element 30 is supported in relation to the fixed component by a support foot 91, also provided with a through hole 92, to house the attachment element.
In the variant shown in Figure 5, the attachment portion 32 is an insert which extends longitudinally along the rotation axis X, as a continuation of the body 31. Preferably, the attachment portion 32 is provided with at least one interlocking joint 322 (or key) to make a shaped coupling between the second element 30 and a fixed component. In particular, the attachment portion 32 is suitable to be inserted in a dedicated seat 71 of a support 70 provided on the fixed component, the seat having the same shape (or key) as the attachment portion 32 to form a shaped coupling therewith.
In the variant in figure 10, the second element 30 is rotatable around the rotation axis X. In such embodiment, the attachment portion 32 comprises a cylindrical section 32a and a key section 32b provided with at least one interlocking joint 322. The second element 30 is suitable for inserting simultaneously both in a special seat provided in the seat 151 and in a special seat provided in the lid 152. One of the two seats has a shape (or key) suitable to couple to the key section 2b of the attachment portion 22, the other seat is substantially cylindrical, so as to allow the free rotation around the cylindrical section of the attachment portion 32.
In a further embodiment variant, the body 31 is in one piece with the mobile component or with the fixed component; the second element 30 is thus without the attachment portion 32.
The elastic element 50 is made of resilient material, preferably rubber. The elastic element 50 is for example made of polyurethane.
The elastic element 50 applied to a hinge intended to cushion a lid 152 has a greater rigidity than the elastic element applied to a hinge intended to cushion a seat 151. The lid in fact, being heavier than the seat, needs to be cushioned more during the descent.
As shown in Figure 7, the elastic element 50 is a strip of resilient material having a substantially C-shape.
The elastic element 50 has a length (measured as an arc of circumference) less than the free inner circumference of the chamber 23. The free inner circumference of the chamber 23 is defined as the circumference of the chamber 23 net of the portion occupied by the tooth 24 and by the tab 34. As a result, once the elastic element 50 and the body 31 of the second element 30 have been inserted in the chamber 23 of the first element 20, the chamber 23 is not fully occupied since a portion L of the inner circumference remains free.
The elastic element 50 has a width (measured longitudinally to the rotation axis X) less than the depth of the chamber 23.
The elastic element 50 has a depth (measured radially to the rotation axis X) less than the width of the chamber 23.
Preferably, at least one end 51 of the elastic element 50 is tapered or bevelled, substantially into a trapezoid. Preferably, both ends 51 are tapered. Such tapered ends 51 make it possible to increase the return thrust exerted by the elastic element 50 during the reopening of the lid / seat.
Preferably, the elastic element 50 is attachable to the first element 20, when it is the first element 20 to be rotatable about the rotation axis X (as in figures 3, 4, 5), or to the second element 30, when it is the second element 30 to be rotatable around the rotation axis X (as in figure 10). In particular, one end 51 of the elastic element 50 is attachable to the tooth 24 of the first element 20 or to the tab 34 of the second element 30, so as to be dragged with it in rotation around the axis X. Preferably, the elastic element 50 is fixed by interlocking, for example, the end 51 is insertable in a dedicated hole 243 provided on the tooth 24 or on the tab 34, or by gluing. Once attached, as is evident from figure 8b, the elastic element 50 is compressed by the rotatable element during the rotation in the closing direction C, and is dragged by the rotatable element during the rotation in the opening direction A. Such embodiment makes it possible to facilitate the return of the elastic element 50 into the extended position in an initial work configuration (described in detail below, with reference to figure 8a).
Preferably, the elastic element 50 is provided with at least one calibration hole 52, made to calibrate the rigidity so as to modify the compressive strength exerted by the elastic element 50.
In an embodiment variant, the elastic element 50 is a spring, preferably a torsion spring, for example made of steel.
With reference to the variant shown in figures 3 and 4, the free mobile element 40 comprises a body 41, preferably of a cylindrical shape, provided with a chamber, preferably of a cylindrical shape, suitable to at least partially house the attachment portion 32 of the second element 30. Preferably, both the body 41 and the chamber extend longitudinally along the rotation axis X. Preferably, the body 41 is provided with a bottom 422 which closes the inner chamber.
The free mobile element 40 comprises an attachment portion 42, suitable to be attached to a mobile component. The attachment portion 42 is a lever which extends from the outer wall 411 of the body 41, radially in relation to the rotation axis X. Preferably, the attachment portion 42 is fitted with at least one hole 421 for housing an attachment element to couple the free mobile element 40 to a mobile component.
During assembly of the hinge 1 the elastic element 50 is inserted in the chamber 23 of the first element 20 to assemble the cushioning mechanism. Preferably, the elastic element 50 is positioned with a first end 51 in abutment against a first side 241 of the tooth 24. Subsequently the body 31 of the second element 30 is inserted in the chamber 23 so that the tab 34 is in abutment against a second side 242 of the tooth 24. As a result, a free space L remains between a second end 51 of the elastic element 50 and the tab 34 of the second element 30.
The attachment of the cushioning mechanism is obtained by means of the insertion of an attachment element 80, for example a screw 80, through the inner lumens 35 and 33 of the second element 30, and the screwing of the first element 20 into the threaded inner lumen 251. Subsequently, the second element 30 and the first element 20 are attached to the respective fixed and mobile components.
Figures 8a to 8c show the functioning steps of the cushioning mechanism during the descent of the mobile element.
With particular reference to the case of the WC 150, figure 8a shows the positioning of the cushioning mechanism when the seat 151 or the lid 152 is in the open position. The tooth 24 is in abutment against the tab 34 of the fixed element: this way the first element 20 cannot rotate further around the rotation axis X in an opening direction (A).
Figure 8a shows the first element 20 in an initial work configuration in which it is not compressed between the tooth 24 and the tab 34. In such configuration, a first end 51 of the elastic element 50 is in abutment against the tooth 24 and a second end 51 of the elastic element 50 is free. By rotating the seat 151 or the lid 152 in a closing direction (C), the first element 20 is free to rotate without any obstructions or delays: the elastic element 50 is in fact free to rotate integrally with the first element 20, inside the chamber 23, at least for the section of free circumference of length L.
During the rotation, the tooth 24 of the first element 20 pushes the elastic element 50 in rotation inside the chamber 23. The first element 20, and with it the elastic element 50, is free to rotate without interference until the elastic element 50 comes into abutment against the tab 34 of the second element 30 (as shown in figure 9a).
Figure 8b shows the first element 20 in an intermediate work configuration in which it is compressed between the tooth 24 and the tab 34. In such configuration, a first end 51 of the elastic element 50 is in abutment against the tooth 24 and a second end 51 of the elastic element 50 is in abutment against the tab 34.
Continuing the rotation (past the vertical position), the weight force starts to act on the seat 151 or on the lid 152, pushing in the closing direction (C). The first element 20 rotates around the rotation axis X, compressing the elastic element 50 against the tab 34 of the second element 30, elastic element 50 which opposes resistance to compression and slows the rotation of the first element 20.
Continuing the rotation further the weight force acts more intensely on the seat 151 or on the lid 152 pushing in the closing direction (C). In fact, the weight force acting on the ring/ lid is lower in the initial stages of descent but increases progressively for greater inclinations of the ring / lid.
Figure 8c shows the first element 20 in a final work configuration in which it is further compressed between the tooth 24 and the tab 34. As shown in figure 9b, the elastic element 50 expands, occupying all the space as far as abutting against the longitudinal walls of the chamber 23. In particular, the elastic element 50 expands in abutment with the bottom 232 of the chamber 23 and the bottom 37 of the body 31. The rigidity of the elastic element 50, limited in its transversal expansion, increases and the elastic element 50 opposes still greater resistance to compression (between the tooth 24 and the tab 34) further slowing down the rotation of the first element 20.
As the weight force progressively increases during the rotation (for greater inclinations of the ring or of the lid) the rigidity of the elastic element 50 increases and thus the resistance posed to the rotation of the first element 20.
The cushioning mechanism according to the present invention is simple and compact: all the essential elements of the mechanism are in fact housed within the chamber provided in the first element, without the need for large housing spaces.
In addition, the cushioning mechanism thus realized acts only on the movement of the hinge during the closing phase of the seat/lid, without interfering with the lifting of the seat/lid.
In addition, the cushioning mechanism thus realized, thanks to the presence of the tapered ends of the elastic element facilitates the reopening step of the lid/seat.
In one embodiment (not shown in the figures) which is not part of the invention, the cushioned hinge coupling is applied to a swing door, for example of a garage, fitted with an electric system for opening only. The cushioned hinge comes into action in the closing phase of the swing door, as the elastic element accompanying the swing door in the descent from a substantially horizontal open position to a substantially vertical closed position. The application of the cushioned hinge to the closing phase of the swing door permits energy savings compared to traditional, electrical opening and closing systems, in that the closure does not require any electrical slowdown system.
In yet a further embodiment, shown in figure 11, the first element 20 comprises a body 20a and an insert 20b insertable in a dedicated housing 29 of the body 20a. The insert 20b is provided with the chamber 23 suitable to house therein the elastic element 50 and, at least partially, the second element 30.
The body 20a comprises a seat 25 suitable to house an attachment element, for example a screw. The bottom 28 of the insert 20b is provided with a through hole 26 for housing the seat 25. The insert 20b comprises the tooth 24, protruding from the inner circular wall towards the inside of the chamber 23, in the direction of the rotation axis X.
As shown in figure 11a, the insert 20b is attachable inside the body 20a by means of a shaped coupling made between the bottom 28 of the insert 20b and the bottom 27 of the housing 29. Preferably, the shape of the bottom 28 and the shape of the bottom 27 permits the shaped coupling of the insert 20b inside the body 20a both at 0 degrees and with a rotation of 90 degrees, even more preferably even with a rotation of 180 degrees and 270 degrees. The shaped coupling is realized for example by means of a square shape, or a four-pointed star, or through holes and protrusions positioned in correspondence with the cardinal points. Such constructive choice simplifies the production of the hinge: by making an insert couplable to the body with alternative rotations (0, 90, 180, 270 degrees), it is possible to obtain different coupling configurations of the hinge with the same two elements.
Preferably, the body 20a is made of metal, for example aluminium. Preferably, the insert 20b is made of plastic material. Such constructive choice makes it possible to improve the sliding of the elastic element 50 inside the chamber 23. In one embodiment version wherein the first element is made entirely of metal, it may happen that after a prolonged period of non-use of the hinge, the elastic element adheres to the metal walls of the chamber so much so as to remain stuck, with consequent malfunction of the cushioning system. In the version in which the insert 20b is made of plastic material, the elastic element in rubber 50 slides better along the walls of the plastic chamber 23. In addition, by making the insert 20b in plastic material the production of the hinge is simplified: the geometry of the body 20a, preferably made of metal, is simplified since it has no tooth, and the more complex geometry of the insert 20b, provided with a tooth 24, is easily accomplished by moulding.
In the variant in figure 11 the first element 20, and in particular the body 20a, is suitable to be integrally constrained in rotation to a mobile component to be cushioned so as to rotate with it around a rotation axis X, and the second element 30 is suitable to be integrally constrained to a fixed component;
The second element 30 comprises an attachment portion 32, with at least one interlocking joint 322 (or key) to make a shaped coupling with a suitable seat 71 of a support 70 provided on the fixed component. The second element 30 comprises a body 31 suitable to be inserted at least partially in the chamber 23 of the insert 20b, and is provided with the tab 34, protruding from the outer circular wall towards the outside of the body 31.
The tab 34 comprises a through notch 39, for example rectangular, which divides the tab 34 at approximately half the length. The notch 39 is suitable to house a portion of the elastic element 50.
Preferably, the elastic element 50 is provided with a shaped end 58, for example in the shape of a T. The shaped end 58 comprises a foot 57 joined to the body of the elastic element 50 via a neck 56, at which two grooves 59 are formed between the foot 57 and the body of the elastic element 50.
Preferably, the elastic element 50 is attachable to the second element 30, and in particular, the shaped end 58 is attachable to the tab 34. Even more preferably, the neck 56 of the elastic element 50 is insertable in the notch 39 of the tab 34 so that the foot 57 acts as a stop against the walls of the tab 34.
Innovatively, the cushioned hinge coupling according to the present invention is particularly simple to make and effective in the cushioning action.
Advantageously, the cushioned hinge coupling according to the present invention acts selectively only in the phase of the rotation which requires cushioning.
Advantageously, the cushioned hinge coupling according to the present invention is very compact and makes it possible to house all the essential elements of the cushioning mechanism inside a standard size hinge.
Advantageously, the cushioned hinge coupling according to the present invention increases its cushioning effect as the force to be offset progressively increases.
It is clear that a person skilled in the art may make modifications to the device described above, all contained within the scope of protection as defined by the following claims.

Claims

Cushioned coupling hinge (1) for hingeing a seat or a lid to a bowl of a WC, suitable to couple a mobile component and a fixed component in a rotatable manner, wherein the mobile component is the seat (151) or the lid (152) and the fixed component is the bowl (154) of the WC (150), said cushioned coupling hinge (1) comprising:
- a first element (20) and a second element (30), in which either the first (20) or the second element (30) is integrally constrainable to the mobile component to be cushioned so as to rotate with it around a rotation axis (X), and the other is integrally constrainable to the fixed component;
wherein:
- the first element (20) comprises a body (21) provided with a chamber (23) suitable to house, at least partially, the second element (30), said body (21) being provided with a tooth (24) projecting towards the inside of the chamber (23),

- the second element (30) comprises a body (31) suitable for inserting in the chamber (23) and provided with a tab (34), projecting outwards, and suitable for engaging with the tooth (24);
characterised in that it comprises an elastic element (50), positioned between the first element (20) and the second element (30); and wherein
- the elastic element (50) is housed in the chamber (23) between the tooth (24) and the tab (34), and is suitable to oppose resistance, in an intermediate working configuration in which it is compressed between the tooth (24) and the tab (34), so as to slow down the rotation of the first element (20) acting during the closing of the mobile component (151,152) and without interfering with the opening of the mobile component (151,152), wherein the elastic element (50), in a final working configuration in which it is further compressed between the tooth (24) and the tab (34), expands to abut against the longitudinal walls of the chamber (23) further slowing down the rotation of the first element (20).
Cushioned coupling hinge (1), according to claim 1, wherein the elastic element (50) is made from rubber, for example from polyurethane.
Cushioned coupling hinge (1), according to any of the previous claims, wherein the elastic element (50) is a strip of resilient material substantially having a C-shape.
Cushioned coupling hinge (1), according to any of the previous claims, wherein the elastic element (50) has a length, measurable as an arc of circumference, less than the inner circumference of the chamber (23), so that, once the elastic element (50) and the body (31) have been inserted in the chamber (23), a portion (L) of free circumference remains.
Cushioned coupling hinge (1), according to any of the previous claims, wherein the elastic element (50) is provided with at least one tapered end (51).
Cushioned coupling hinge (1), according to any of the previous claims, wherein the elastic element (50) is attached to the first element (20) when it is the first element (20) which is rotatable around the rotation axis (X), or to the second element (30) when it is the second element (30) which is rotatable around the rotation axis (X), so as to be pulled with it in rotation around the axis (X).
Cushioned coupling hinge (1), according to any of the previous claims, wherein the first element (20) comprises an attachment portion (22), suitable to form the attachment with the mobile component, having a lever shape which extends from the body (21) and is provided with at least one hole (221) for the housing of an attachment element, and/or the second element (30) comprises an attachment portion (32), suitable to form the attachment with the fixed component, having a substantially cylindrical shape and provided with a through hole (321) in a direction substantially orthogonal to the rotation axis (X),for the housing of an attachment element.
Cushioned coupling hinge (1), according to any of the claims from 1 to 6, wherein the first element (20) comprises an attachment portion (22), suitable to form the attachment with the mobile component, having the form of an insert which extends from the body (21), along the rotation axis (X), suitable to form a shaped coupling with a seat provided on the mobile component, and/or the second element (30) comprises an attachment portion (32), suitable to form the attachment with the fixed component, having the form of an insert which extends from the body (31), along the rotation axis (X), suitable to form a shaped coupling with a seat provided on the fixed component.
Cushioned coupling hinge (1), according to any of the claims from 1 to 6, wherein the body (21) of the first element (20) is in one piece with the mobile component or with the fixed component, and/or the body (31) of the second element (30) is in one piece with the mobile component or with the fixed component.
Cushioned coupling hinge (1) according to any of the claims from 1 to 8, wherein the first element (20) comprises a body (20a) and an insert (20b) insertable in a dedicated housing (29) of the body (20a), and wherein the insert (20b) is the body (21) provided with a chamber (23) .
Cushioned coupling hinge (1) according to claim 10, wherein the insert (20b) is attachable inside the body (20a) by means of a shaped coupling made between the bottom (28) of the insert (20b) and the bottom (27) of the housing (29), and wherein the shaped coupling permits the coupling of the insert (20b) and of the housing (29) both at 0 degrees and with a rotation of 90 degrees, preferably also with a rotation of 180 degrees and 270 degrees.
Cushioned coupling hinge (1) according to claim 10 or 11, wherein the insert (20b) is made of plastic and the body (20a) is metal, for example aluminium.
Cushioned coupling hinge (1), according to any of the previous claims, wherein the elastic element (50) is attachable to the tab (34) of the second element (30) by means of a shaped end (58).
Cushioned coupling hinge (1) according to claim 13, wherein the shaped end (58) comprises a foot (57) joined to the body of the elastic element (50) by means of a neck (56), and wherein the neck (56) is insertable in a notch (39) provided on the tab (34) so that the foot (57) acts as a stop against the walls of the tab (34).