Hinge for furniture optimized for opening

Abstract

A hinge (1) for furniture optimized for opening, comprising – a first articulated quadrilateral (2), comprising a coupling element (3) which is associable with a fixed wall (100), a first portion (4a) of a first lever (4) and a third lever (5) which are associated with the coupling element (3), and a first portion (6a) of a second lever (6), which is interposed between the preceding ones and is articulated to them, – a second articulated quadrilateral (11), comprising a fixing element (12) which is associable with a movable door (200), a second portion (6b) of the second lever (6) and a fourth lever (13) which are associated with the fixing element (12) and a second portion (4b) of the first lever (4), which is interposed between the preceding ones and is articulated to them, – first elastic compression means (17), which are functionally associated with the first quadrilateral (2), and – second elastic compression means (18), which functionally associated with the second quadrilateral (11), the hinge (1) comprises an element (19) for the abutment of the first elastic means (17), which is associated with the third lever (5) so that it can tilt about a first oscillation pivot (20), the first elastic means (17) comprise at least one first elastic compression element (21), the mutually opposite ends of which are associated with the abutment element (19) and with the coupling element (3), and at least one second elastic compression element (22), the mutually opposite ends of which are associated with the abutment element (19) and with the third lever (5), the first and second elastic elements (21, 22) being associated with the abutment element (19) on opposite sides of the first pivot (20).

Description

[0001] HINGE FOR FURNITURE OPTIMIZED FOR OPENING

[0002] The present invention relates to a hinge for furniture optimized for opening.

[0003] In the furniture manufacturing sector, in particular for the furnishing of caravans, campers, boats or truck cabins, hinges for the articulation of a door for closing a corresponding compartment of a piece of furniture about a substantially horizontal axis of rotation, such as those usually used in horizontally extended wall units and the like, are known. Said hinges must allow the movement of the door between a closed configuration, in which it is directed downward to close the corresponding compartment, and an open position, in which it is rotated and raised upward to allow access to the compartment itself.

[0004] These hinges are essentially constituted by a first articulated quadrilateral and a second articulated quadrilateral, which are provided with a first and a second lever in common and have, respectively, an element for coupling to the upper wall for delimiting a compartment of a piece of furniture and an element for fixing to a door for closing said compartment. These hinges are adapted to assume alternatively a closed configuration and an open configuration in which the fixing element assumes two different arrangements with respect to the coupling element, forming an angle of rotation conventionally called “opening angle”, which can vary according to the requirements of the specific application.

[0005] To bear the weight of the door in the open configuration and ensure that the closed configuration is maintained, these hinges must be equipped with first and second elastic compression means, interposed between the elements of the first and second quadrilateral respectively, as described for example in EP 1 736 627 Bl in the name of this same Applicant.

[0006] To achieve an autonomous opening of the wall unit provided with the hinges described above, it is also known to provide gas cylinder actuators interposed between the sides delimiting the compartment of the piece of furniture and the closing door, which act for opening. During opening, it is therefore sufficient for the user to exert on the door a force such as to overcome the initial reaction of the second elastic means and then the action of the gas cylinder actuators accompanies the door until it reaches the maximum opening configuration, without requiring further interventions by the user.

[0007] However, this solution entails the need to purchase and assemble additional components, with a consequent increase in production costs and longer work times.

[0008] Moreover, said gas cylinder actuators create an obstruction inside the compartment of the piece of furniture, reducing its capacity, besides having an unpleasant visual impact when the wall unit is open.

[0009] Last but not least, said gas cylinder actuators tend to lose effectiveness over time, to the point of needing to be replaced.

[0010] The aim of the present invention is to provide a hinge for furniture optimized for opening that is capable of improving the background art in one or more of the aspects indicated above.

[0011] Within this aim, an object of the invention is to obtain an autonomous opening of the doors without the need for the user to accompany the door to the maximum opening configuration and without requiring the use of gas cylinder actuators or other dedicated additional components.

[0012] Another object of the present invention is to be able to obtain a damped opening stroke, in order to avoid sudden movements of the door that could cause impacts and / or unpleasant noises.

[0013] A further object of the present invention is to have a compact space occupation, so as not to reduce the capacity of the compartment of the piece of furniture and not to have an unpleasant visual impact.

[0014] Another object of the present invention is to ensure constant performance over time without requiring maintenance interventions or replacement of components. Another object of the invention is to be able to adapt to doors with different characteristics, especially in terms of weight.

[0015] A further object of the present invention is to overcome the drawbacks of the background art in a manner that is alternative to any existing solutions.

[0016] Not the least object of the invention is to provide a hinge for furniture optimized for opening that is highly reliable, relatively easy to provide and at competitive costs.

[0017] This aim, as well as these and other objects that will become more apparent hereinafter, are achieved by a hinge for furniture optimized for opening according to claim 1, optionally provided with one or more of the characteristics of the dependent claims.

[0018] Further characteristics and advantages of the invention will become more apparent from the description of two preferred but not exclusive embodiments of the hinge for furniture optimized for opening according to the invention, illustrated by way of non-limiting example in the accompanying drawings, wherein:

[0019] Figure 1 is a perspective view of a first embodiment of the hinge according to the invention in the open configuration;

[0020] Figure 2 is a partially sectional lateral elevation view, taken along a longitudinal central plane, of the hinge of Figure 1;

[0021] Figure 3 is a partially sectional lateral elevation view, taken along a longitudinal central plane, of the hinge of Figure 2 in the closed configuration;

[0022] Figure 4 is a partially sectional lateral elevation view, taken along a longitudinal central plane, of a second embodiment of the hinge according to the invention in the open configuration;

[0023] Figure 5 is a partially sectional lateral elevation view, taken along a longitudinal central plane, of the hinge of Figure 4 in the closed configuration. With reference to the figures, a hinge for furniture optimized for opening according to the invention is generally designated by the reference numeral 1.

[0024] The hinge 1 comprises a first articulated quadrilateral 2, which comprises a coupling element 3 which is associable with a fixed wall 100 forming a compartment of a piece of furniture, a first portion 4a of a first lever 4 and a third lever 5 which are associated with and articulated to the coupling element 3 and a first portion 6a of a second lever 6, which is interposed between the previous ones and articulated to them.

[0025] The coupling element 3 can be shaped in various ways according to the requirements of the specific application. The coupling element 3 generally consists of a contoured plate adapted to be arranged so as to adhere to the fixed wall 100. Alternatively, the coupling element 3 may consist of an adjustable base which is associable with the fixed wall 100 and is provided with means for adjusting the mounting position of the hinge 1.

[0026] The fixed wall 100 is typically constituted by a wall of the structure of a furnishing element, such as a wall unit or the like, forming an accommodation compartment.

[0027] Such fixed wall 100 essentially consists of a panel preferably having a substantially horizontal arrangement. The coupling element 3 is generally adapted to be connected by means of screws 101 to the fixed wall 100, at the internal face directed toward the compartment of the piece of furniture.

[0028] It should be noted that in the present description the term “substantially” is understood to mean “within conventional manufacturing and assembly tolerances”.

[0029] In the figures, the articulation pivots interposed between the members of the first quadrilateral 2 are numbered as follows: 7 articulation pivot interposed between the coupling element 3 and the first portion 4a of the first lever 4; 8 articulation pivot between the first lever 4 and the second lever 6; 9 articulation pivot between the first portion 6a of the second lever 6 and the third lever 5; 10 articulation pivot interposed between the third lever 5 and the coupling element 3.

[0030] The articulation pivots 7, 8, 9 and 10 are substantially parallel to each other.

[0031] Under normal conditions of use of the hinge 1, the axes of rotation defined by the articulation pivots 7, 8, 9 and 10 have a substantially horizontal arrangement.

[0032] Moreover, the hinge 1 comprises a second articulated quadrilateral 11 which comprises a fixing element 12 which is associable with a door 200 which is movable with respect to the fixed wall 100, a second portion 6b of the second lever 6 and a fourth lever 13 which are associated with and articulated to the fixing element 12 and a second portion 4b of the first lever 4 which is interposed between the previous ones and is articulated to them.

[0033] The fixing element 12 can be shaped in various ways according to the requirements of the specific application. The fixing element 12 generally consists of a contoured plate adapted to be arranged so as to adhere to the door 200. Alternatively, the fixing element 12 can consist of an adjustable base which is associable with the door 200 and is provided with means for adjusting the mounting position of the hinge 1.

[0034] The fixing element 12 is generally adapted to be connected by means of screws 201 to the door 200, at the internal face directed toward the compartment of the piece of furniture.

[0035] The door 200 is typically constituted by an element for closing said accommodation compartment.

[0036] The door 200 can be constituted by a flat or contoured panel.

[0037] In the figures, the articulation pivots of the members of the second quadrilateral 11 are numbered as follows: 14 articulation pivot interposed between the fixing element 12 and the second portion 6b of the second lever 6; 15 articulation pivot interposed between the second portion 4b of the first lever 4 and the fourth lever 13; 16 articulation pivot interposed between the fourth lever 13 and the fixing element 12.

[0038] The articulation pivots 14, 15 and 16 are substantially parallel to each other.

[0039] The articulation pivot 8 interposed between the first and second levers 4 and 6 is common to the two articulated quadrilaterals 2 and 11. The articulation pivot 8 is substantially parallel to the articulation pivots 14, 15 and 16.

[0040] Under normal conditions of use of the hinge 1, the axes of rotation defined by the articulation pivots 14, 15 and 16 also have a substantially horizontal arrangement.

[0041] The first and second portions 4a and 4b of the first lever 4 constitute the extension of one another. The articulation pivots 7, 8 and 15 distributed along the first lever 4 are not mutually aligned, the first and second portions 4a and 4b being inclined with respect to one another.

[0042] The first and second portions 6a and 6b of the second lever 6 constitute the extension of one another. The articulation pivots 8, 9 and 14 distributed along the second lever 6 are not mutually aligned, the first and second portions 6a and 6b being inclined with respect to each other.

[0043] The hinge 1 is adapted to alternately assume a closed configuration (Figures 3 and 5) and a fully open configuration (Figures 1, 2 and 4), passing through a plurality of configurations which are intermediate between the previous ones, in which the fixing element 12 changes its arrangement with respect to the coupling element 3, which remains fixed during use.

[0044] The fixing element 12 varies its arrangement by an opening angle during movement between the fully open and closed configurations.

[0045] During the movement of the hinge 1 , the center of gravity of the door 200 associated with the fixing element 12 moves with respect to the coupling element 3, modifying the angular momentum with which the weight of said door tends to close it, both during opening and during closure.

[0046] Moreover, the hinge 1 is provided with first elastic compression means 17, which act for opening and are functionally associated with the first quadrilateral 2, and with second elastic compression means 18, which act for closing and are functionally associated with the second quadrilateral 11.

[0047] The expression “functionally associated” is understood to mean that they cooperate in movement.

[0048] Moreover, the hinge 1 comprises an abutment element 19 of the first elastic means 17 which is associated with the third lever 5 so that it can tilt about a first oscillation pivot 20 which is substantially parallel to the various articulation pivots of the elements that constitute the first and the second quadrilateral 2 and 11.

[0049] The first elastic means 17 comprise at least one first elastic compression element 21 the mutually opposite ends of which are associated with the abutment element 19 and with the coupling element 3 and at least one second elastic compression element 22 the mutually opposite ends of which are associated with the abutment element 19 and with the third lever 5. The first and second elastic elements 21 and 22 are associated with the abutment element 19 on opposite sides of the first pivot 20.

[0050] Unless otherwise specified, the term “associated” is understood to mean connected both directly, i.e., without the interposition of other elements, and indirectly, i.e., with the interposition of other elements.

[0051] The at least one first elastic element 21 can be of the type of a conventional coil spring or similar, preferably with an internal or external telescopic spring guide.

[0052] The at least one second elastic element 22 can be of the type of a conventional coil spring or similar, preferably with an internal or external telescopic spring guide.

[0053] The first elastic means 17 may comprise two or more first elastic elements 21 acting in parallel. Preferably, the first elastic elements 21 are arranged side by side along a direction which is substantially parallel to the first pivot 20. Preferably, the first elastic elements 21 have substantially the same elastic constant. In the embodiments shown, the first elastic means 17 comprise two first elastic elements 21 constituted by respective helical compression springs acting in parallel.

[0054] The first elastic means 17 may comprise two or more second elastic elements 22 acting in parallel. Preferably, the second elastic elements 22 are arranged side by side along a direction which is substantially parallel to the first pivot 20. Preferably, the second elastic elements 22 have substantially the same elastic constant. In the embodiments shown, the first elastic means 17 comprise two second elastic elements 22 constituted by respective helical compression springs acting in parallel.

[0055] The first elastic means 17 act in the opening direction of the hinge 1 and support the weight of the door 200 in the maximum opening configuration, contrasting the first step of the movement in the closing direction. In the maximum opening configuration of the door 200, the elastic force applied to said door by the first elastic means 17 contrasts the action of the weight, keeping it open until the user applies a force in the closing direction, overcoming said elastic force.

[0056] The following description refers to a first elastic element 21 and a second elastic element 22, and can be understood to refer to each first and second elastic element provided in the hinge 1.

[0057] The first elastic element 21 has a higher elastic constant than the second elastic element 22.

[0058] Being coil springs, the first elastic element 21 has a greater number of turns than the second elastic element 22.

[0059] In greater detail, the first pivot 20 is associated with the third lever 5 externally to the first quadrilateral 2 formed by the articulation pivots 7, 8, 9, 10. In fact, the first pivot 20 is arranged on the opposite side of the segment connecting the articulation pivots 7 and 8 with respect to the segment connecting the articulation pivots 9 and 10.

[0060] Moreover, the first pivot 20 is spaced further from the articulation pivot 10 than from the articulation pivot 9.

[0061] The first elastic means 17 are associated with the third lever 5 externally to the articulation pivots 9 and 10 on the opposite side of the first lever 4.

[0062] In greater detail, the third lever 5 is shaped so as to form two side walls 5a between which a connecting band 5b is interposed. The articulation pivots 9 and 10 and the first pivot 20 are interposed between the side walls 5a. The side walls 5a extend beyond the passage region of the articulation pivots 9 and 10 on the opposite side with respect to the first lever 4 to form a receptacle 25 for the first elastic means 17.

[0063] The first and second elastic elements 21 and 22 abut with respective ends against corresponding supporting elements 23 and 24, which are associated with the abutment element 19 and are arranged substantially parallel to the first pivot 20 on opposite sides of the latter. The supporting elements 23 and 24 are arranged at the mutually opposite margins of the abutment element 19 at respective ends along a direction which is transverse with respect to the arrangement of said first pivot. The supporting elements 23 and 24 are integral with the abutment element 19 in the oscillation about the first pivot 20.

[0064] However, it is not excluded that the abutment element 19 may be contoured to incorporate the supporting elements monolithically.

[0065] Usefully, the extension of the abutment element 19 in a direction which is transverse to the arrangement of the first pivot 20 determines the distance from said first pivot of the points of contact of the first and second elastic elements 17 and 18 with the abutment element 19 and, therefore, the distance of the lines of action of the respective elastic forces with respect to the first pivot 20 and the angular momentum applied by said elastic forces to the abutment element 19 and, therefore, to the third lever 5. In this way, in the movement between the closed configuration and the fully open configuration of the hinge 1, the abutment element 19 varies its angular position instant by instant about the first pivot 20 due to the elastic forces applied by the first and second elastic elements 21 and 22 that must contrast the action of the weight of the door 200, in order to optimize the opening thrust and obtain an autonomous opening of the hinge 1. In fact, to open the compartment of the piece of furniture when the hinge 1 is in the closed configuration it is sufficient for the user to apply a force to the door 200 in the first step of the movement in the opening direction to overcome the action of the second elastic means 18, while subsequently the door 200 proceeds towards the maximum opening configuration autonomously due to the effect of the action of the first elastic means 17.

[0066] The distance from the first pivot 20 of the contact points of the first and second elastic elements 17 and 18 with the abutment element 19 can be sized according to the requirements of the specific application.

[0067] Moreover, the first elastic element 21 lies at a shorter distance from the segment connecting the articulation pivots 9 and 10 with respect to the second elastic element 22.

[0068] The first elastic element 21, on the opposite side of the abutment element 19, abuts against a crossmember 26 which is associated with the coupling element 3 and is substantially parallel to the second pivot 20.

[0069] The second elastic means 18 comprise at least one third elastic compression element 27, of the type of a helical spring or the like, preferably with an internal or external telescopic spring guide. The third elastic element 27 has mutually opposite ends associated, respectively, with the fourth lever 13 and the second portion 4b of the first lever 4. The second portion 4b of the first lever 4 has a first abutment tab 4c on the corresponding end of the third elastic element 27.

[0070] In the embodiment shown, the second elastic means 18 comprise a third elastic element 27, but it is not excluded that two or more third elastic elements acting in parallel may be provided.

[0071] In a first embodiment (Figures 1-3) the first elastic means 17 comprise an element 29 for supporting the end of the second elastic element 22 arranged on the side opposite to the abutment element 19 which is associated with the third lever 5 in a fixed position. The supporting element 29 is interposed between the side walls 5a with an arrangement that is substantially parallel to the first pivot 20.

[0072] In a second embodiment (Figures 4 and 5), the first elastic means 17 comprise means 30 for setting the preloading of the second elastic element 22, so as to be able to adjust the force applied by the second elastic element according to the weight of the door 200 to be moved by means of the hinge 1.

[0073] The setting means 30 comprise at least one bracket 31 for supporting the second elastic element 22, which is associated with the third lever 5 so that it can tilt about a second articulation pivot 32 which is substantially parallel to the first pivot 20 and means 33 for adjusting the angular position of the bracket 31 about the second pivot 32.

[0074] The adjustment means 33 comprise a threaded element 34 which is engaged so as to pass through a crossmember 35 which is interposed between the side walls 5a and bears at least one corresponding threaded hole. The shank of the threaded element 34 is engaged against the bracket 31, so that by screwing or unscrewing the threaded element 34 in / from the corresponding threaded hole it is possible to modify the angular position of said bracket around the second pivot 32.

[0075] In the embodiment shown, the setting means 30 comprise a single bracket 31 for supporting both second elastic elements 22. It is not excluded that a bracket 31 with corresponding adjustment means 33 may be provided for each second elastic element 22.

[0076] The second elastic means 18 act in the closing direction of the hinge 1 and offer resistance in the first step of the movement in the opening direction. In this way, during use, it is possible to avoid accidental openings of the door 200 in the closed position.

[0077] The hinge 1 advantageously comprises damping means 28 acting for opening, which are functionally associated with the first quadrilateral 2. Said damping means 28 contrast the action of the first elastic means 21 in the opening step, preventing the door 200 from moving too quickly and / or slamming at the end of its travel, obtaining a damping effect during opening.

[0078] The damping means 28 can be constituted, for example, by a doubleacting cylinder with suitably sized communicating chambers. Preferably, the damping means are extended in the open configuration and contracted in the closed configuration.

[0079] The damping means 28 are provided with two mutually opposite ends associated respectively with the first portion 4a of the first lever 4 and with the first portion 6a of the second lever 6.

[0080] More specifically, a second tab 4d is provided which protrudes from the first portion 4a of the first lever 4, and a third tab 6c is provided which protrudes from the first portion 6a of the second lever 6 for connection to the ends of the damping means 28.

[0081] In practice it has been found that the invention achieves the intended aim and objects, providing a hinge for furniture optimized for opening that allows to obtain an autonomous opening of the door of the piece of furniture without the user having to accompany it until it is fully open and without requiring the use of dedicated additional components.

[0082] Moreover, the hinge according to the invention is versatile in use as the characteristics of the door to be moved vary.

[0083] Furthermore, the hinge according to the invention is compact and aesthetically pleasing and therefore does not penalize the capacity or the aesthetics of the piece of furniture in which it is applied.

[0084] The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept; all the details may furthermore be replaced with other technically equivalent elements.

[0085] In practice, the materials used, as well as the contingent shapes and dimensions, may be any according to the requirements and the state of the art.

[0086] The disclosures in Italian Patent Application No. 102024000017803 from which this application claims priority are incorporated herein by reference. Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

CLAIMS1. A hinge (1) for furniture optimized for opening, comprising a first articulated quadrilateral (2), comprising a coupling element (3) which is associable with a fixed wall (100) which forms a compartment of a piece of furniture, a first portion (4a) of a first lever (4) and a third lever (5) which are associated in an articulated manner with said coupling element (3), and a first portion (6a) of a second lever (6), which is interposed between the preceding ones and is articulated to them, a second articulated quadrilateral (11), comprising a fixing element (12) which is associable with a movable door (200) for the opening / closing of said compartment, a second portion (6b) of said second lever (6) and a fourth lever (13) which are associated in an articulated manner with said fixing element (12) and a second portion (4b) of said first lever (4), which is interposed between the preceding ones and is articulated to them, first elastic compression means (17), which act for opening and are functionally associated with said first quadrilateral (2), and second elastic compression means (18), which act for closing and are functionally associated with said second quadrilateral (11), the hinge (1) being adapted to alternately assume an open configuration and a closed configuration, said first, second, third and fourth levers (4, 5, 6, 13) rotating about respective articulation pivots (7, 8, 9, 10, 14, 15, 16) which are substantially parallel to each other and said fixing element (12) varying its own arrangement with respect to said coupling element (3) during movement between the open and closed configurations, characterized in that it comprises an element (19) for the abutment of said first elastic means (17), which is associated with said third lever (5) so that it can tilt about a first oscillation pivot (20), and in that said first elastic means (17) comprise at least one first elastic compression element (21), the mutually opposite ends of which are associated with said abutment element (19) and with said coupling element (3), and at least one second elasticcompression element (22), the mutually opposite ends of which are associated with said abutment element (19) and with said third lever (5), the first and second elastic elements (21, 22) being associated with the abutment element (19) on opposite sides of the first pivot (20).

2. The hinge (1) according to claim 1, characterized in that said first pivot (20) is associated with said third lever (5) externally on the opposite side of said first lever (4) with respect to the segment for connecting the articulation pivots (9, 10) of said third lever to said coupling element (3) and to the first portion (6a) of said second lever (6).

3. The hinge (1) according to claim 1 or 2, characterized in that said third lever (5) protrudes beyond the segment for connecting the articulation pivots (9, 10) to said coupling element (3) and to the first portion (6a) of said second lever (6) on the opposite side of said first lever (4) so as to form a receptacle (25) for said first elastic means (17).

4. The hinge (1) according to one or more of the preceding claims, characterized in that said first pivot (20) is more distant from the articulation pivot (10) of said third lever (5) and of said coupling element (3) than the articulation pivot (9) of said third lever (5) and of the first portion (6a) of said second lever (6).

5. The hinge (1) according to one or more of the preceding claims, characterized in that said first elastic means (17) are associated with said third lever (5) externally to the segment that connects the articulation pivots (9, 10) to said coupling element (3) and to the first portion (6a) of said second lever (6) on the opposite side of said first lever (4).

6. The hinge (1) according to one or more of the preceding claims, characterized in that said at least one first elastic element (21) lies at a shorter distance from the segment connecting the articulation pivots (9, 10) of said third lever (5) to said coupling element (3) and to the first portion (6a) of said second lever (6) with respect to said at least one second elastic element (22).

7. The hinge (1) according to one or more of the preceding claims, characterized in that said at least one first elastic element (21) has a greater elastic constant than said at least one second elastic element (22).

8. The hinge (1) according to one or more of the preceding claims, characterized in that said at least one first elastic element (21) and said at least one second elastic element (22) comprise respective helical springs and in that said at least one first elastic element (21) has a greater number of turns than said at least one second elastic element (22).

9. The hinge (1) according to one or more of the preceding claims, characterized in that said first elastic means (17) comprise means (30) for setting the preloading of said at least one second elastic element (22).

10. The hinge (1) according to claim 9, characterized in that said setting means (30) comprise at least one bracket (31) for supporting said at least one second elastic element (22), which is associated with said third lever (5) so that it can tilt about a second oscillation pivot (32) which is substantially parallel to said first pivot (20) and means (33) for adjusting the angular position of said bracket (31) about said second pivot (32).

11. The hinge (1) according to claim 10, characterized in that said adjustment means (33) comprise a threaded element (34) which is engaged so as to pass through a corresponding threaded hole associated with a crossmember (35) associated with said third lever (5), the shank of the threaded element (34) being engaged in contact with said supporting bracket (31).

12. The hinge (1) according to one or more of the preceding claims, characterized in that it comprises damping means (28) which act for opening and are functionally associated with said first quadrilateral (2).

13. The hinge (1) according to claim 12, characterized in that said damping means (28) are provided with two mutually opposite ends associated with the first portion (4a) of said first lever (4) and with the first portion (6a) of said second lever (6).

14. The hinge (1) according to one or more of the preceding claims, characterized in that said first elastic means (17) comprise at least two of said first elastic elements (21) arranged in parallel.

15. The hinge (1) according to one or more of the preceding claims, characterized in that said first elastic means (17) comprise at least two of said second elastic elements (22) arranged in parallel.

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