Device having inclination element with adjustable inclination

Abstract

An apparatus having a tilt element with an adjustable tilt, comprising: a support structure; a tilt element pivoted to the support structure about a first axis of rotation; at least a first abutment portion; at least one stop body rotatably connected to the tilting body and the support structure about a first axis; an automatic restraint mechanism; and a control device kinematically connected to the automatic restraint mechanism and movable between a locked position and an unlocked position. The automatic restraining mechanism includes: a first tooth portion obtained on the stopper; a first gear engaged on the tooth portion of the stopper and rotatably connected to the tilting element about a second rotational axis; and a first torsion spring inserted into the automatic restraining mechanism to provide a force suitable for indirectly preventing rotation of the first gear. The torsion spring is wound about a rotary pin rotationally connected to the tilting element about a third axis of rotation. The automatic restraint mechanism includes a gear mechanism adapted to kinematically connect rotation of the first gear to the rotary pin through the intermediate transmission stage.

Description

Technical Field

[0001] The invention relates to a device having a tilting element with an adjustable inclination.

[0002] In particular, the device with the tilting element can be an armrest of a vehicle, for example an armrest of a motor vehicle. The device according to the invention can also be a seat, a backrest, a footrest, a table with an adjustable tabletop or others. Background Art

[0003] Devices with a tilting element lockable at various inclinations are known, wherein the inclination can be adjusted by a user-actuable adjustment system. In particular, armrests for vehicles are known that are equipped with a system for adjusting the inclination of a movable part of the armrest.

[0004] Very common devices using ratchet or freewheel bearing adjustment systems are known. However, despite achieving their function, such systems do not allow the tilting element to automatically return to a determined selected position. In fact, each time the tilting element is moved from a selected position, the entire adjustment must be repeated to return to this selected position. This is not immediate and, in any case, does not ensure that the desired result is obtained immediately and easily.

[0005] Therefore, in particular in the automotive field, in particular in the case of vehicle armrests, there is a need to have an apparatus with a tilting element which is provided with a system for automatically restoring a selected adjustment position of the tilting element itself.

[0006] At present, such needs are mainly met with the help of electromechanical systems, which involve, for example, electric motors and electronic control systems. However, although these systems achieve their functions, they have high implementation costs.

[0007] Solutions of mechanical type are also known. The same applicant has developed an adjustable tilting armrest provided with a kinematic system designed to automatically restore a selected adjustment position of the armrest itself. Such a solution is described in European patent EP 3608169 B1.

[0008] In more detail, the system allows adjusting the inclination of the armrest by stepless movement, ie infinite positions within a given adjustment range.Such a system can be actuated by the action of the user on a specific control member, usually represented by a lever or a button.

[0009] The adjustment system comprises a gear mechanism designed to adjust the angular position of the end-of-stroke element relative to the inclined portion of the armrest about the axis of rotation of the armrest. The mechanism comprises a locking device that can be deactivated by the user via a control device. Such a locking device consists of a helical spring wound around a rotating pin. The kinematic connection between the helical spring and the end-of-stroke element is ensured by a gear wheel mounted on the rotating pin and engaging with a circular toothed segment obtained on the end-of-stroke element and centered on the axis of rotation of the armrest.

[0010] The function of the spring is to lock the axis of rotation when wound, which allows the position of the end-of-stroke element to be changed. Operationally, actuating the above-mentioned control device causes the spring to expand (see Fig.10 ), thereby releasing the rotation of the gear mechanism and thus allowing the user to adjust the incline of the armrest.

[0011] In the kinematic chain of the gear mechanism, the member that causes the mechanism to lock is precisely the above-mentioned helical spring. The locking of the mechanism occurs through the friction force generated by the spring around the winding axis. Therefore, apart from the structural limitations of the handrail system, the greater the braking force provided by the spring, the greater the load supported by the handrail itself.

[0012] In the above mechanism, the kinematic chain controlling the transmission of the imaginary load carried on the handrail end to the helical spring has two transmission stages. The first transmission stage is defined by the ratio L1 / L2, where L1 is the distance between the free end of the handrail and the axis of rotation of the handrail, and L2 is the radius of the original circumference of the toothed section of the end-of-travel element. The second transmission stage is defined by the ratio D5 / D6, where D5 is the diameter of the original circumference of the gear and D6 is the winding diameter of the helical spring.

[0013] The above technical solution has two limitations.

[0014] The first limitation is related to the fact that, in order to minimize the L1 / L2 ratio, the toothed section of the end-of-travel element is as far away as possible from the axis of rotation of the armrest. Therefore, the rotating pin with the relative spring and the gear is far below the axis of rotation of the armrest, thus intruding into the area of ​​the armrest that is intended for the passage of cables and air ducts in the automotive field. For this reason, the above-mentioned technical solution is not suitable for installation in confined spaces.

[0015] A second limitation is that particularly strong helical springs are required to support the loads of the order of 800 N typically required in the automotive sector. Expanding the helical spring via the control therefore requires applying a moderate force, which, however, can make operating the control itself cumbersome and certainly not comfortable.

[0016] Therefore, there is a need to have a device with an inclination-adjustable tilting element, in particular an armrest, which device still allows stepless adjustment of the tilting element without using electromechanical devices while having an adjustment mechanism that can be installed in confined spaces.

[0017] Furthermore, there is a need for an apparatus with an inclination-adjustable tilting element, in particular an armrest, which apparatus still allows stepless adjustment of the tilting element without the use of electromechanical devices, while having controls that can be mechanically operated by the user in a simple manner. Summary of the invention

[0018] The main object of the present invention is therefore to eliminate all or at least some of the disadvantages of the above-mentioned prior art by providing a device with a tilting element with adjustable inclination, which device allows continuous (stepless) adjustment of the tilting element without the use of electromechanical devices, while having an adjustment mechanism installed in a narrow space.

[0019] Another object of the invention is to provide a device with a tilting element with adjustable inclination, which allows continuous (stepless) adjustment of the tilting element without the use of electromechanical devices, while having control means that can be mechanically operated by the user by applying a small load, so as to allow ergonomic use.

[0020] Another object of the invention is to provide a device with a tilting element whose inclination is adjustable, which device has a very compact adjustment mechanism.

[0021] Another object of the present invention is to provide a device having a tilting element with an adjustable inclination, which assists a user in performing the lifting and lowering movement of the tilting element.

[0022] Another object of the invention is to provide a device with a tilting element whose inclination is adjustable, which device is mechanically simple and at the same time can be operated immediately and easily.

[0023] Another object of the present invention is to provide a device having a tilting element with an adjustable inclination, which device is easy to manufacture and has low cost.

[0024] Another object of the invention is to provide a device with a tilting element whose inclination is adjustable, which device comprises a locking system which is easy for the user to operate in the event of a collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technical features of the present invention according to the above-mentioned purpose can be clearly found in the content of the following claims, and its advantages will become more apparent from the following detailed description given with reference to the accompanying drawings, which only show one or more embodiments of the present invention in a non-limiting example manner, in which:

[0026] - Figure 1 A perspective view showing a device according to a preferred first embodiment of the invention, shown with the tilting element in a first end-of-stroke position at a specific angle;

[0027] - Figure 2 Shows Figure 1 An exploded view of the device in FIG. 1 , without the cover element of the tilting element;

[0028] - Figure 3 Shows from Figure 1 An orthogonal plan view of the device as viewed from the top;

[0029] - Figure 4a Shows Figure 3 A sectional view of the device taken along section IV-IV, wherein the control device is in the locked position and the tilting element is in the first stroke end position;

[0030] - Figure 4b Shows Figure 4a The device of claim 1, wherein the control device is in the unlocked position and the tilting element is still in the first end-of-travel position;

[0031] - Figure 4c Shows Figure 4b The device of claim 1, wherein the control device is returned to the locked position and the tilting element is in a second end-of-travel position corresponding to a maximum tilt position of the tilting element;

[0032] - Figure 5a , Figure 5b and Figure 5c yes Figure 3 Three cross-sectional views of the device in the figure taken along the section VV shown in the figure, in which the control device and the tilting element are respectively Figure 4a , Figure 4b and Figure 4c Position in

[0033] - Figure 6 Shows Figure 2 An exploded view of a portion of the device relative to the automatic restraint mechanism;

[0034] - Figure 7a , Figure 7b Shows Figure 6 Two perspective views of the mechanism shown in FIG. 1 , in which the control device and the tilting element are respectively Figure 4a , Figure 4b Position in

[0035] - Figure 8a Shows Figure 7a The two first parts of the mechanism in the side orthogonal view according to the arrow VIII shown here, with some parts removed to better highlight other parts;

[0036] - Figure 8b Shows Figure 7a The two second parts of the mechanism in the side orthogonal view according to the arrow VIII shown here, with some parts removed to better highlight other parts;

[0037] - Figure 9a , Figure 9b They are shown respectively with Figure 8a , Figure 8b The same figure shows that after a load F1 is applied to the tilting element, Figure 6 The forces acting on the mechanism in the

[0038] - Fig.10 Shows Figure 3 An orthogonal cross-sectional view of an enlarged detail of the device in FIG. 1 taken along section XX indicated herein, depicting the torsion spring in a coiled state and an expanded state;

[0039] - Fig.11 shows a perspective sectional view of a device according to a second preferred embodiment of the invention, showing a tilting element in a first end-of-travel position with a certain inclination, the device being provided with a tilting element locking system;

[0040] - Fig.12a Shows Fig.11 A cross-sectional view of the device according to the arrow XII shown therein, wherein the control device is in the locked position, the tilting element is in the first end-of-travel position, and the locking system is activated;

[0041] - Figure 12b Shows Fig.12a The device of claim 1, wherein the control device is in the unlocked position, the tilting element is still in the first end-of-travel position, and the locking system is deactivated;

[0042] - Fig.13a Shows Fig.11 A cross-sectional view of the device according to the arrow XIII shown here, wherein the device support structure is not shown, wherein the control device, the tilting element and the locking system are in contact with Fig.12a The corresponding position;

[0043] - Fig.13b Shows Fig.11 A cross-sectional view of the device according to the arrow XIII shown here, wherein the device support structure is not shown, wherein the control device, the tilting element and the locking system are in contact with Figure 12b The corresponding position;

[0044] - Fig.13c Shows Fig.11A cross-sectional view of the device according to the arrow XIII shown here, wherein the device support structure is not shown, wherein the control device and the locking system are in contact with Fig.12a corresponding positions, and the tilting element and Fig.13a The first stroke end in the middle is at a different angle;

[0045] - Fig.14 shows a perspective cross-sectional view of the device according to an alternative embodiment, shown with the control device in a locked position;

[0046] - Fig.15 Shows Fig.14 A side orthogonal view of the device according to arrow XV shown therein;

[0047] - Fig.16 Shows Fig.14 A perspective cross-sectional view of the device in which the control device is in an unlocked position;

[0048] - Fig.17 Shows Fig.16 An orthogonal side view of the device according to arrow XVII shown therein; and

[0049] - Fig.18 Shows Fig.14 Exploded view of the device in . DETAILED DESCRIPTION

[0050] With reference to the drawings, a device having a tilting element with adjustable inclination according to the present invention is indicated as a whole by reference numeral 1 .

[0051] Specifically, as shown in the accompanying drawings (especially Figure 1 ) as shown in the figure, the device with a tilting element according to the invention can be an armrest of a vehicle, for example, an armrest of a motor vehicle. For simplicity, the following description will therefore be made with reference to an armrest of a motor vehicle, and in this sense, the terms "armrest" and "device" are used equivalently. This does not exclude that the device 1 according to the invention can also be, in addition to an armrest, for example, a seat, a backrest, a footrest, a small table with an adjustable tabletop or other.

[0052] In the following and in the following description and the appended claims, reference will be made to the device or armrest 1 in the state of use. Therefore, any reference to a lower or upper position, or to a horizontal or vertical orientation, must be understood in this sense.

[0053] Here and throughout the description and in the claims, the diameter of a gear or geared part with a circular development refers to the diameter of the original circumference of the gear mechanism.

[0054] For example, according to Figure 1In a general embodiment of the invention shown in FIG. 1 , a device or armrest 1 comprises a support structure 2 and a tilting element 3 pivotally connected to the support structure about a first rotation axis X1 to move between a first end of travel position and a second end of travel position angularly spaced from each other. The first end of travel defines a normal use position of the tilting element 1 of the armrest, such as Figure 4a shown.

[0055] As will become apparent from the following description, the position of the first end of travel is subject to adjustment, whereas the second end of travel is preferably fixed.

[0056] In particular, in the particular case where the device 1 is an armrest in a vehicle, the support structure 2 is intended to be rigidly connected to the vehicle, or it may be slidably attached to the vehicle to allow horizontal translation of the armrest.

[0057] Specifically, as shown in the accompanying drawings (and in particular Figure 1 ) as shown, the tilting element is rotatably pivoted to the supporting structure 2.

[0058] According to the above general embodiment of the present invention, Figure 2 , Figure 3 , Figure 4a , Figure 4b and Figure 4c As shown, the device or handrail 1 comprises:

[0059] - at least a first abutment 4', fixed to the supporting structure; and

[0060] - At least one stop body 10 , connected rotationally about the first axis X1 to the tilting body 3 and to the support structure 2 and capable of limiting the rotation of the tilting element.

[0061] Functionally, when the stop body 10 is constrained to the tilting element 3, the tilting element is stopped at the first stroke end position by abutting against the first abutment 4', as shown in FIG. Figure 4a and Figure 4b shown.

[0062] Preferably, the device or handrail 1 comprises at least a second abutment (not shown) fixed to the support structure 2 at a different angular position than the first abutment 4'. Such a second fixed abutment defines a second end-of-travel position.

[0063] Likewise, according to such a general embodiment, Figure 6 , Figure 7a and Figure 7b As shown, the device or armrest 1 comprises an automatic restraining mechanism 100 suitable for restraining the stop body 10 rotationally to the tilting element 3 .

[0064] Operationally, when the stop body 10 is constrained to the tilting element 3 by the automatic constraining mechanism 100 , the tilting element stops itself at the first end-of-travel position by abutting against the first abutment 4 ′.

[0065] like Figures 4a to 5c and Figure 7a to Figure 7b As shown, the device or armrest 1 also includes a control device 40, which is kinematically connected to the above-mentioned automatic restraint mechanism 100 and can be moved between the following positions:

[0066] - a locked position in which the control device does not hinder the action exerted on the stop body 10 by the automatic restraining mechanism 100 (see Figure 4a and Figure 5a ),as well as

[0067] - an unlocked position in which the control device blocks the action exerted by the automatic restraining mechanism 100 (see Figure 4b and Figure 5b ).

[0068] Operationally, as will be discussed in more detail later in the description, the tilting element has an inclination α (see Figure 4a and Figure 4c ) are adjusted as follows:

[0069] - Initially, the control device 40 is moved to the unlocked operating position (see Figure 4a and Figure 4b and Figure 4c ), so that by changing the inclination angle α of the tilting element 3, the stop body 10 will not be driven to move, and the relative position between the tilting element 3 and the stop body 10 and thus the angular position of the first stroke end relative to the reference plane m can be changed; and

[0070] - After reaching the desired inclination angle α, the control device 40 returns to the locked position (see Figure 4c and Figure 5c ) to lock the stop body 10 against the tilting element again and fix the position of the new first stroke end.

[0071] like Figure 6 , Figure 7a to Figure 7b , Figure 8a To Figure b and Figure 9a to Figure 9b As shown, the above-mentioned restraining mechanism 100 comprises a first tooth portion 101 obtained on the stop body 10 and extending on a section of the circumference concentric with the first rotation axis X1 and having a predefined diameter D2.

[0072] like Figure 6 , Figure 8a and Figure 9aAs shown, the restraint mechanism 100 further comprises a first gear 111 which meshes on the toothed portion 101 of the stopper body 10 and is rotationally connected to the tilting element 3 about a second rotation axis X2 parallel to the first rotation axis X1. The first gear 111 has a predefined diameter D3.

[0073] Operationally, locking the rotation of the first gear 111 prevents relative movement between the first gear 111 and the first toothed portion 101 and thus between the stop body 10 and the tilting element 3. Therefore, locking the rotation of the first gear 111 prevents the stop body 10 from rotating relative to the tilting element 3 about the first rotation axis X1.

[0074] like Figure 6 , Figure 7a to Figure 7b , Figure 8b and Figure 9b As shown, the restraining mechanism 100 also includes a torsion spring 121 inserted into the automatic restraining mechanism 100. The torsion spring 121 is preloaded to provide a force Fm suitable for indirectly preventing the first gear 111 from rotating by generating a torque M1 sufficient to balance the torque generated by the predefined maximum load F1 applied to the tilting element 3 and indirectly transmitted to the torsion spring 121 by the stop body 10 through the automatic restraining mechanism between the spring itself and the stop body. Operationally (see Figure 8a to Figure 8b ), the maximum application arm of the maximum load F1 is equal to the distance L1 between the free end of the tilting element 3 and the first rotation axis X1. Therefore, the maximum torque M1 generated by the load F1 applied to the tilting element 3 is equal to M1=F1×L1.

[0075] like Figure 9a As shown, when the stop body 10 rests on the first abutment 4', the applied load F1 generates a reaction force F2 on the stop body 10, wherein the application arm of the reaction force is equal to half the diameter D2 / 2=L2 of the first tooth portion relative to the first rotation axis X1. With the aid of the automatic restraint mechanism 100, the stop body 10 and the tilting element 3 form a single rigid body with torque transmission. Therefore, M1=F2×L2=F1×L1, and therefore F2=F1×(L1 / L2). In order to balance the force F2 transmitted from the stop body to the first gear 111, thereby preventing the rotation of the stop body 10, it is necessary to apply a torque M2=F2×D3 / 2 to the first gear 111, wherein D3 is the diameter of the first gear 111.

[0076] In operation, the torsion spring 121 prevents the rotation of the first gear 111 even when no load is applied to the tilting element 3. When the control device 40 is moved from the locked position to the unlocked position, the effect of the torsion spring 121 is offset, and thus the rotation of the first gear 111 is released (see Figure 7a to Figure 7b ).

[0077] According to the first aspect of the present invention (see Figure 6 ), the torsion spring 121 is wound around a rotation pin 131, which is rotationally connected to the tilting element 3 around a third rotation axis X3, the third rotation axis:

[0078] - parallel to the first axis of rotation X1 and the second axis of rotation X2; and

[0079] - In the middle between the two axes X1, X2.

[0080] The torsion spring 121 has a predefined winding diameter D6 (see Figure 8b ).

[0081] According to the second aspect of the present invention, unlike the technical solutions of the prior art, the above-mentioned automatic restraint mechanism 100 is composed of a gear mechanism, which is suitable for indirectly kinematically connecting the rotation of the first gear 111 to the rotating pin 131 (on which the torsion spring 121 is wound) through an intermediate transmission stage.

[0082] Thus, by means of the invention, it is possible to position the rotating pin 131 closer to the first rotation axis X1 of the tilting element, moving the rotating pin 131 itself and the torsion spring 121 away from an area of ​​the device (armrest) 1 which is intended for the passage of cables and air ducts in the automotive field. In this way, the automatic restraint mechanism 100 according to the invention is suitable for installation in narrow and confined spaces.

[0083] Preferably, the above-mentioned intermediate transmission stage is a reduction stage. In this way, unlike the prior art, in the kinematic chain for transmitting the load applied to the tilting element 3 to the torsion spring 121, it is possible to have two reduction stages instead of a single reduction stage, while having greater freedom in determining the size of the stopper 10 and greatly reducing the L1 / L2 ratio.

[0084] In the prior art, the availability of a single reduction stage and the presence of space constraints have limited the possibilities for reducing the transmission factor, which does not allow adequate control of the load on the torsion spring. This makes it necessary to install particularly strong torsion springs, the effect of which is to require the user to apply a non-negligible load to the control device in order to deactivate the torsion spring, or to use an electromechanical device.

[0085] By means of the invention, the applied load F1 and the arm load L1 are identical, the introduction of an intermediate transmission stage (preferably a reduction stage) in the kinematic chain allows to further significantly reduce the load on the torsion spring, while still having space constraints.

[0086] By means of the invention, the device 1 with a tilting element with adjustable inclination still allows continuous (stepless) adjustment of the tilting element without the use of electromechanical devices, and at the same time, due to a more favorable transmission ratio, the device has a control device that can be mechanically operated by the user with a small load, so that it can be used ergonomically.

[0087] Preferably, the automatic restraining mechanism 100 defines a three-stage transmission kinematic system, wherein preferably at least the intermediate stage is a reduction stage. Even more preferably, two of the three transmission stages are reduction stages and only one is a multiplication stage, although its influence is attenuated due to the greater freedom of the size of the stop body relative to the first axis of rotation X1. However, a kinematic chain with an intermediate reduction stage, a neutral transmission stage and a multiplication stage can be provided.

[0088] Advantageously, as shown in the accompanying drawings (see Figure 2 and Figure 3 ), the device or handrail 1 may comprise two stop bodies 10 arranged in two opposite positions along the first rotation axis X1 and both intended to abut against the first abutment 4' to stop the tilting element in the first stroke end position. The device 1 also comprises an automatic restraining mechanism 100 for each stop body 10. Preferably, the two mechanisms share the same rotation pin 131 and the same torsion spring 121. Such an embodiment allows to distribute the strains in the handrail 1 more evenly, thus ensuring excellent reliability.

[0089] In order to simplify the present disclosure, reference has been and will be made (unless otherwise stated) to a single stop body. However, according to the embodiment specifically shown in the drawings, the description must also be extended to the (preferred) case where there are two stop bodies.

[0090] According to a preferred embodiment of the present invention (particularly in Figure 6 , Figure 8b and Figure 9b ), the gear mechanism of the automatic restraint mechanism 100 includes a second gear 141, which is mounted on the rotating pin 131 and has a predefined diameter D5.

[0091] Reference again Figure 6 , Figure 8b and Figure 9b The gear mechanism of the automatic restraint mechanism 100 further includes a second toothed portion 151 on a transmission member 152 rotationally integral with the first gear 111 and meshing with the second gear 141. Such a second toothed portion 151 extends on a circumference concentric with the second rotation axis X2 and has a predefined diameter D4.

[0092] The presence of the transmission member 152 defines an intermediate transmission stage.

[0093] The diameter D4 of the second toothed portion 151 is larger than the diameter D3 of the first gear wheel 111 , thereby defining the intermediate transmission stage as a reduction stage.

[0094] Preferably, the winding diameter D6 of the torsion spring 121 is greater than the diameter D5 of the second gear 141 , thereby defining a second reduction stage in the kinematic chain of the automatic restraint mechanism.

[0095] According to an alternative embodiment not shown in the figures, the winding diameter D6 of the torsion spring 121 is equal to the diameter D5 of the second gear wheel 141 , thereby defining a neutral transmission stage in the kinematic chain of the automatic restraining mechanism 100 .

[0096] Reference now Figure 8a , Figure 8b , Figure 9a , Figure 9b and Fig.10 , identifying the parameters of the automatic restraining mechanism gear 100 that define the transmission ratio.

[0097] As described above, when the maximum load F1 ( Figure 9a ), the maximum application arm of the load F1 is equal to the distance L1 between the free end of the tilting element 3 and the first rotation axis X1, and thus the maximum torque M1 generated by such a load F1 applied to the tilting element 3 is equal to M1=F1×L1.

[0098] In order to lock the rotation of the stopper 10 by the first gear 111 , a torque M2=F2×D3 / 2 needs to be applied to the first gear, which is suitable for counteracting the force F2 released on the first toothed portion 101 due to the torque transmission M1 , wherein D3 is the diameter of the first gear 111 .

[0099] Since the transmission member 152 is integral with the first gear 111, torque transmission exists. Therefore, F3 represents the force transmitted from the second tooth portion 151 to the second gear 141 ( Figure 9b ), the torque M2 transmitted from the first gear 111 to the transmission member 152 and the second tooth portion 151 can be expressed as M2=F3×D4 / 2, where D4 is the diameter of the second tooth portion 151. Therefore, it can be deduced that F3=F2×(D3 / D4)=F1×(L1 / L2)×(D3 / D4).

[0100] The force transmitted to the second gear 141 is represented by F3 ( Figure 9b ), the torque M3 applied to the second gear can be expressed as M3=F3×D5 / 2, where D5 is the diameter of the second gear 141.

[0101] F4 represents the force on torsion spring 121 ( Figure 9b), the torque M3 transmitted from the second gear 141 to the torsion spring 121 through the rotating pin 131 can be expressed as M3=F4×D6 / 2, where D6 is the winding diameter of the torsion spring 121. It can be deduced that F3×D5 / 2=F4×D6 / 2, and therefore F4=F3(D5 / D6). Expressing F3 as a function of F2 yields F4=F2(D3 / D4)(D5 / D6). Finally, expressing F2 as a function of F1 yields F4=F1(L1 / L2)(D3 / D4)(D5 / D6).

[0102] For constructional reasons, in particular if the device 1 is an armrest of a car, L1 is greater than L2. However, according to the invention, with D3<D4 and D5<D6, with the same maximum load F1 applied to the tilting element 3 and with a fixed ratio L1 / L2, the load F4 on the spring 121 is reduced by a factor (D3 / D4) (D5 / D6) less than 1.

[0103] Compared to prior art solutions with fixed D5 / D6 values, by the invention the load F4 on the spring 121 is thus reduced by an additional factor (D3 / D4) less than 1.

[0104] By means of the invention, as mentioned above, the disadvantage of size limitation is less, since the third axis of rotation X3 can be moved away from the second axis of rotation X and closer to the first axis of rotation X1 , so that the value of L2 can be increased.

[0105] Specifically, ( Figure 7a to Figure 7b ) The torsion spring 121 has a first end 121a constrained to the tilting element 3 and a second end 121b kinematically associated with the control device 40 so that when the control device is in the unlocked position ( Figure 7b ), such second end 121b is subjected to a force which, by counteracting the elastic force of the spring, releases the grip of the spring on the rotating pin 131 and releases the rotation of the pin itself and the associated second gear 141.

[0106] According to the attached figure ( Figure 3 and 4a to Figure 5b ), the control device 40 comprises a drive element 41 which can be moved between at least two different positions corresponding to a locking position and a release position, respectively.

[0107] refer to Figure 7a to Figure 7b , the control device 40 further comprises an actuator 42 which engages the second end 121b of the torsion spring 121 and is rotatably movable about a rotation axis parallel to the first rotation axis X1 to move between the following positions:

[0108] - Passive position ( Figure 7a), in this passive position, the actuator 42 does not oppose the torsion spring 121, and

[0109] - Active position ( Figure 7b ), in this active position, the actuator 42 forms an opposition with the torsion spring 121.

[0110] For example, Figure 7a As shown, the control device 40 also comprises kinematic connection means 44, 45 connecting the drive element 41 to the actuator 42 such that the unlocked position of the drive element 41 corresponds to the active position of the actuator and the locked position of the drive element 41 corresponds to the passive position of the actuator.

[0111] Advantageously, the actuator 42 comprises a support 43 by means of which it is rotationally connected to the tilting element 3 and is mechanically associated with the kinematic connection means of the control device 40 .

[0112] Preferably, if Figure 6 and Figure 7a In particular, the rotation axis of the actuator 42 coincides with the third rotation axis X3 about which the rotating pin 131 rotates. In this case, the actuator 42 comprises a first bushing 42a, which is supported in a cantilevered manner in the axial direction by the support 43, so as to be coaxially mounted on the torsion spring and interrupted in the circumferential direction by a radial appendage 42b, through which the first bushing 42a engages with the second end 121b of the spring 121. Such a solution has the advantage of providing compactness and at the same time achieving a balanced distribution of strains on the actuator 42.

[0113] Advantageously, if Figure 6 and Figure 7a to Figure 7b As shown, the support body 43 includes:

[0114] - a body 43a by which the actuator 42 pivots on the rotation pin 131, and

[0115] - A second bushing 43b which is coaxial with the first bushing 42a and acts as a spacer between the body 43a and the first bushing 42a.

[0116] like Figure 7a to Figure 7b As shown, the second bushing 43b accommodates the second gear 141 inside and is open in the circumferential direction to allow the transmission member 152 to engage with the second gear 141, thereby rotating the second gear around the second rotation axis X2 between the body 43a and the first bushing 42a. Such a solution helps to improve the compactness of the automatic restraint mechanism by allowing the parts to overlap partially in the axial direction.

[0117] according to Figures 14 to 18In the embodiment shown in , the rotation axis X7 of the actuator 42 can be distinguished from the third rotation axis X3 about which the rotating pin 131 rotates. In this case, the actuator 42 comprises:

[0118] - a body 43a by which the actuator 42 pivots on the tilting element 3; and

[0119] A tooth 49 extending in cantilevered manner from the body 43 a at a position radially offset relative to the axis of rotation X7 of the support 43 , so as to engage the second end 121 b of the spring 121 .

[0120] Operationally, as Figure 14 to Figure 15 (controls in locked position) and Figure 16 to Figure 17 (the control device is in the unlocked position) as shown, the rotation of the body 43 a causes or does not cause the expansion of the torsion spring 121 through the teeth 49 .

[0121] Preferably ( Figures 4a to 5c ), the kinematic connection device comprises a gear mechanism between the portion 43d of the support body 43 and the rotating member 44, which can be driven to rotate by the movement of the drive element 41 between the unlocking position and the locking position. Figure 4a , Figure 4b and Figure 4c As shown, the driving element 41 and the rotating member 44 are connected via a rod 45 .

[0122] according to Figure 2 and Figure 3 In the preferred embodiment particularly shown in FIG. 3 , the tilting element 3 comprises a supporting frame 30 .

[0123] return Figure 3 , the support frame 30 comprises two arms 31 , 32 extending longitudinally parallel to an armrest axis Y orthogonal to the first rotation axis X1 .

[0124] Each arm 31, 32 is pivoted at its inclined end 31', 32' to the fixed structure 2 so as to rotate about a first rotation axis X1 ( Figure 2 and Figure 3 ).

[0125] Preferably, if Figure 2 In particular, the two arms 31, 32 are composed of two plates, the shape of which is based on the longitudinal development of the armrest. The two plates 31 and 32 are connected by one or more spacers 36 to define a technical compartment 33. The two plates have two first holes 35 aligned along the first axis of rotation X1, at which the two arms of the tilting element 3 and the stop body 10 pivot.

[0126] Preferably, ( Figure 2 , Figure 3 and Figure 6 ), the rotating pin 131 of the automatic restraint mechanism 100 is rotatably supported by the two arms 31 and 32.

[0127] Specifically ( Figure 1 and Figure 2 ), the support structure 2 comprises two columns 21, 22, on which the tilting element 3 is pivotally connected. The two columns 21, 22 can be connected to each other through a base 23 to form a single body composed of, for example, a C-shaped or U-shaped body.

[0128] Preferably, ( Figure 2 and Figure 3 ) One or two stop bodies 10 and the corresponding first gears 111 are arranged between the tilting element 3 and the support structure 2, while the rest of the automatic restraining mechanism 100 is arranged between the two arms 31 and 32. For this purpose ( Figure 2 ), the tilting element 3 is provided with a through hole 34 to allow an axial connection between the first gear 111 and the transmission member 152 along the second rotation axis X2.

[0129] Preferably, ( Figure 2 ) The first fixed abutment 4 ′ is defined by a rod extending longitudinally along a fourth axis X4 parallel to the first axis of rotation X1 and rigidly fixed at its two ends to the two uprights 21 and 22 at the holes 24 and 25 .

[0130] The two plates 31 and 32 of the tilting element have two second holes 37 aligned along the second rotation axis X2, into which the rotation pin 131 is rotationally inserted ( Figure 2 ). Such a rotation pin 131 is arranged in an inner space 33 between two plates 31 and 32 forming the arms of the tilting element 3 .

[0131] The control device 40 is arranged in the technical compartment 33 between the two plates 31 and 32 and is in particular Figure 1 and Figure 2 As shown, the rotating member 44 and the transmission rod 45 are arranged in the technical compartment. Specifically, the drive element 41 is arranged at the free end of the tilting element 3.

[0132] Advantageously, if Figure 2 As shown, similar to the transmission member 152, the two arms 31, 32 of the tilting element 3, and the main body 43a ( Figure 6 ) are composed of shaped plates and are assembled so that the faces of the corresponding shaped plates are parallel to each other. Such a solution allows the automatic restraint mechanism to be constructed as a highly compact multi-layer package and associated with the tilting element 3. This allows it to be installed without losing functionality even in a small space (such as the space provided in the armrest of a car), thereby significantly reducing the space occupied by the tilting element 3 and the support structure 2 inside.

[0133] In particular, the compactness of the restraining mechanism and its mounting on the tilting element allow the automatic restraining mechanism to remain confined within the maneuvering space of the tilting element itself. Figure 4a , Figure 4b , Figure 4c As shown, the space 33 ( Figure 1 ) remain free.

[0134] This is particularly important in automotive armrests, where space inside the support structure 2 is often dedicated to accommodating air passage tunnels or electrical systems.

[0135] More specifically, ( Figure 2 and Figure 6 ) The first tooth portion 101 and the second tooth portion 151 are obtained along the periphery of the forming plate forming the stop body 10 and the transmission member 152, respectively.

[0136] Preferably, ( Figure 1 , Figure 2 , Figure 3 ) The device 1 comprises a motor means 50, which is suitable for directly or indirectly providing a driving torque to the rotating pin 131 to rotate the first gear 111, thereby generating a relative movement between the first gear 111 and the stop body 10 and therefore between the tilting element 3 and the stop body 10 when the control device is in the unlocked position.

[0137] Such a kinematic device 50 is configured and dimensioned so as to provide a driving torque driving the rotation pin 131 and thus the entire kinematic system in a direction, for example, pushing the stop body 10 against the first abutment 4 '. To this end, such a driving torque must have a value at least sufficient to overcome the internal friction of the automatic restraint mechanism 100.

[0138] according to Figure 1 , Figure 2 and Figure 3 In the preferred embodiment of the invention shown in , the aforementioned movement means consist of a second torsion spring 50 wound around the rotating pin 131 and having an end 51 constrained to the tilting element 3 .

[0139] As an alternative to a torsion spring, the aforementioned movement means may consist of an electric motor keyed to the same rotating pin 131 directly or through a reducer.

[0140] Alternatively, the aforementioned movement means may consist of an electric motor keyed to one of the components connected to the aforementioned rotating pin 131 and involved in the adjustment and movement of the tilting element 3 .

[0141] According to an embodiment of the invention (not shown in the drawings), the device 1 may comprise at least one actuator suitable for exerting a force acting directly on the stop body 10 to produce a relative movement between the first gear 111 and the stop body 10 and therefore between the tilting element 3 and the stop body 10 when the control device 40 is in the unlocked position. In particular, such an actuator may consist of an air spring or a cylinder.

[0142] Due to the presence of the above-mentioned movement means, the relative movement generated by the device 1 between the stopper 10 and the tilting element 3 is consistent with the rotation in the tilting element lifting step. In this way, the device 1 assists the user in the lifting and lowering movement of the tilting element. Therefore, there is an auxiliary movement that increases the comfort of use.

[0143] According to an alternative embodiment (not shown in the drawings), the device 1 is not equipped with movement means. Once the automatic restraint mechanism is deactivated, it can only be moved directly by the user himself by manually raising and lowering the tilting element, and no longer automatically. In this case, preferably, the device 1 can include at least one friction element, which is arranged between the stop body 10 and the support structure 2 and is designed with such dimensions that:

[0144] - when the control device 40 is in the locked position, the friction force generated between the stop body 10 and the tilting body 3 is greater than the friction force generated between the stop body 10 and the support structure 2, so that the moving tilting element drags the stop body with it, and

[0145] When the control device 40 is in the unlocked position, the friction force generated between the stopper 10 and the tilting body 3 is smaller than the friction force generated between the stopper 10 and the support structure 2, so that the moving tilting element does not drag the stopper to move together. Specifically, the friction element can be a sliding friction system or a magnetic system.

[0146] According to an embodiment (not shown in the drawings), the device 1 may comprise at least one counterweight associated with the stop body 10. Such a counterweight (preferably associated with the stop body 10) is dimensioned and positioned relative to the first axis of rotation X1 and the first stop 4' so that, when the control device 40 is in the unlocked position, the stop body 10 is in a stable position only when it abuts against the first abutment 4'.

[0147] according to Figure 11 to Figure 13c In the second preferred embodiment shown in , the device 1 additionally comprises a locking system 200 suitable for locking the tilting element 3 in rotation about the first axis of rotation X1 .

[0148] Operationally, such a locking system 200 performs a safety function by preventing accidental raising and lowering of the tilting element in the event of an accident of a vehicle equipped with the device 1 .

[0149] The device 1 of the second preferred embodiment corresponds to the device 1 described in the first preferred embodiment, wherein the above-mentioned locking system 200 is added. Therefore, the above description also applies to the device 1 provided with the locking system. For the sake of brevity of the present disclosure, such a description will not be given again, but reference will be made to it in its entirety, with only the contents related to the locking system 200 being added.

[0150] In more detail, Fig.13a , Fig.13b , Fig.13c As shown, the device 1 comprises an appendage 38 extending from the tilting element 3 .

[0151] and then,( Fig.12a , Figure 12b and Fig.13a , Fig.13b , Fig.13c ) The locking system 200 comprises a locking fork 201 rotatably supported by the support structure 2 of the device 1 about a fifth rotation axis X5 parallel to the first rotation axis X1 to move between the following positions:

[0152] a first position in which the locking fork 201 engages the appendix 38, thereby preventing the tilting element 3 from rotating about the first axis of rotation X1 (see Fig.12a and Fig.13a ),as well as

[0153] a second position in which the locking fork 201 does not engage the appendix 38, leaving the tilting element 3 free to rotate about the first axis of rotation X1 (see Figure 12b , Fig.13b and Fig.13c ).

[0154] The locking system 200 further comprises a pushing device 210, preferably an elastic element, which is configured to automatically keep the fork 201 in the first position ( Fig.13b , Fig.13c ).

[0155] refer to Fig.12a , Figure 12b The device 1 includes an unlocking fork 220, which is rotatably supported around a sixth rotation axis X6 parallel to the first rotation axis X1, and can be moved relative to the locking fork around the sixth rotation axis X6 by a control device to bring the locking fork from the first position to the second position, thereby counteracting the action of the thrust device 210.

[0156] The control device of the unlocking fork 220 is identical to the control device 40 of the automatic restraining mechanism 100 .

[0157] according to Fig.11 and Fig.12a , Figure 12b In the embodiment shown in FIG. 1 , the unlocking fork 220 is mounted on the tilting element 3 , preferably close to or located at the attachment 38 , and comprises:

[0158] - a first protrusion 221 , engaging with the locking fork 201 ; and

[0159] A second protrusion 222 , kinematically connected to the actuator 42 of the control device 40 , such that the actuator 42 moves the unlocking fork 220 when passing from the passive position to the active position, thereby pushing the locking fork 201 from the first position to the second position.

[0160] Operationally, the drive element 41 is thus movable between at least three different positions, corresponding respectively to:

[0161] - locked position of the automatic restraining mechanism 100 (corresponding to the absence of pressure on the control member 41 );

[0162] - unlocked position of the automatic restraining mechanism (corresponding to full pressure of the control member 41 ); and

[0163] - an intermediate position between the first two positions, when this position is reached, the locking fork 201 is in the second position.

[0164] Advantageously, when the drive element 41 is in the intermediate position, a simple rotation of the tilting element 3 can be released without operating the automatic restraining mechanism 100 , thereby keeping the adjustment of the first end position unchanged.

[0165] In more detail, the device 1 can be used as follows:

[0166] - in order to simply raise the tilting element 3 , it is necessary to bring the drive element 41 to the above-mentioned intermediate position and then continue to raise the tilting element (by rotating it);

[0167] - In order to adjust the inclination of the tilting element 3, it is necessary to bring the drive element 41 from the intermediate position to the unlocked position, and such operation (intended for adjustment) is performed before, during or after raising or lowering the tilting element 3; the tilting element can only be raised or lowered after the drive element 41 has been brought to the intermediate position.

[0168] Advantageously, ( Fig.12a , Figure 12b ) The second protrusion 222 of the unlocking fork 220 is slidingly engaged on the support body 43 of the actuator 42 of the control device 40 at a guide groove 230, which is cut out on the support body 43 and acts as a cam.

[0169] The guide groove 230 extends in two interconnected sections ( Figure 12b ):

[0170] a first active section 231 , along which the support body 43 causes the unlocking fork to rotate when it rotates about the third axis of rotation X3 , and

[0171] A second neutral section 232 , along which a rotation of the support body 43 about its axis of rotation X3 or X7 does not cause a rotation of the unlocking fork.

[0172] The first active section 231 has an extension length such that it can cause the unlocking fork to rotate sufficiently to switch the locking fork from the first position to the second position.

[0173] Therefore, the device 1 according to the invention with a tilting element whose inclination is adjustable comprises a tilting element locking system which is easily manageable by the user through the same control means that manages the adjustment of the tilting element inclination.

[0174] Preferably, as mentioned above, the device 1 according to the invention is an armrest, in particular an armrest for a vehicle.

[0175] The present invention provides many advantages, some of which have already been described.

[0176] According to the invention, the device 1 with a tilting element with adjustable inclination allows continuous (stepless) adjustment of the tilting element without the use of electromechanical devices and at the same time has a control device that can be mechanically operated by the user applying a small load, allowing ergonomic use.

[0177] The device 1 according to the invention having an inclination-adjustable tilting element has an adjustment mechanism which can simultaneously provide a high load capacity with low actuation forces on the operating element.

[0178] The device 1 according to the invention with a tilting element whose inclination is adjustable has a very compact adjustment mechanism, so that it can be installed even in confined spaces.

[0179] The device 1 with a tilting element with adjustable inclination according to the present invention assists the user in the lifting and lowering movement of the tilting element by providing auxiliary movement.

[0180] The device 1 according to the invention having a tilting element with adjustable inclination is mechanically simple and at the same time can be operated immediately and easily.

[0181] The device 1 according to the invention having a tilting element with an adjustable inclination is easy and inexpensive to manufacture.

[0182] The device 1 with a tilting element with adjustable inclination according to the invention comprises a tilting element locking system which is easily manageable by the user through the same control means that manages the adjustment of the tilting element inclination.

[0183] Therefore, the present invention thus designed achieves the preset goals.

[0184] Obviously, in practice, it may also take shapes and configurations different from those disclosed above without departing from the scope of protection.

[0185] Moreover, all the details may be replaced with technically equivalent elements and any sizes, shapes and materials may be used as desired.

Claims

1. A device (1) having a tilting element with an adjustable inclination, comprising: - supporting structure (2); - a tilting element (3) pivoted to the support structure about a first axis of rotation (X1) so as to be movable between a first end-of-stroke position and a second end-of-stroke position angularly spaced from each other, the first end-of-stroke position defining a use position of the tilting element; - at least a first abutment (4'), fixed to said supporting structure; - at least one stop body (10) connected to the tilting element (3) and to the support structure (2) in a rotational manner about the first axis (X1); an automatic restraining mechanism (100) adapted to restrain the stop body (10) in rotation to the tilting element (3), the stop body (10) when restrained to the tilting element causing the tilting element itself to stop in the first stroke end position and against the first abutment (4'), - a control device (40) kinematically connected to the automatic restraining mechanism (100) and movable between a locked position in which the control device does not hinder the action exerted by the automatic restraining mechanism (100) on the stop body (10) and an unlocked position in which the control device hinders the action exerted by the automatic restraining mechanism (100), Wherein, the automatic restraint mechanism comprises: - a first toothed portion (101) obtained on said stop body (10) and extending over a section of a circle concentric with said first axis of rotation (X1) and having a predefined diameter (D2); - a first gear (111) meshing on the first toothed portion (101) of the stop body (10) and being rotatably connected to the tilting element (3) about a second rotation axis (X2) parallel to the first rotation axis (X1), the first gear (111) having a predefined diameter (D3); - a first torsion spring (121), inserted into the automatic restraining mechanism (100) to provide a force (Fm) suitable for indirectly preventing the first gear (111) from rotating, thereby generating a torque sufficient to balance the torque generated by the load (F1) applied to the tilting element (3) and transmitted to the first torsion spring (121) through the automatic restraining mechanism between the first torsion spring and the stopper (10), the effect of the first torsion spring (121) being offset when the control device (40) moves from the locked position to the unlocked position, The invention is characterized in that the first torsion spring (121) is wound around a rotating pin (131), the rotating pin is rotatably connected to the tilting element (3) around a third rotation axis (X3), the third rotation axis is parallel to the first rotation axis (X1) and the second rotation axis (X2) and is located at an intermediate position between the first rotation axis (X1) and the second rotation axis (X2), the first torsion spring (121) has a predefined winding diameter (D6), And wherein the automatic restraint mechanism (100) is composed of a gear mechanism, which is suitable for indirectly kinematically connecting the rotation of the first gear (111) to the rotating pin (131) through an intermediate transmission stage.

2. The device (1) according to claim 1, wherein: The intermediate transmission stage is a reduction stage.

3. The device (1) according to claim 1 or 2, wherein: The automatic restraint mechanism (100) defines a three-stage transmission kinematic system, and wherein, preferably, at least the intermediate transmission stage is a reduction stage.

4. The device (1) according to claim 1, 2 or 3, wherein: The gear mechanism of the automatic restraint mechanism (100) comprises: - a second gear wheel (141) keyed to said rotating pin (131) and having a predefined diameter (D5); and a second toothed portion (151) obtained on a transmission member (152) rotationally integral with said first gear wheel (111) and meshing on said second gear wheel (141), said second toothed portion (151) extending over a section of a circle concentric with said second axis of rotation (X2) and having a predefined diameter (D4), The presence of the transmission member (152) defines the intermediate transmission stage, And wherein the diameter (D4) of the second tooth portion (151) is greater than the diameter (D3) of the first gear (111), thereby defining the intermediate transmission stage as a reduction stage.

5. The device (1) according to claim 4 when dependent on claim 3, wherein: The winding diameter (D6) of the first torsion spring (121) is greater than the diameter (D5) of the second gear (141), thereby defining a second reduction stage in the kinematic chain of the automatic restraint mechanism (100).

6. The device (1) according to claim 4 when dependent on claim 3, wherein: The winding diameter (D6) of the first torsion spring (121) is equal to the diameter (D5) of the second gear (141), thereby defining a neutral transmission stage in the kinematic chain of the automatic restraint mechanism (100).

7. The device (1) according to any one of the preceding claims, wherein: The first torsion spring (121) has a first end (121a) constrained to the tilting element (3) and a second end (121b) kinematically associated with the control device (40), so that when the control device is in the unlocked position, the second end (121b) is subjected to a force that counteracts the elastic force of the first torsion spring, loosens the clamping of the first torsion spring on the rotating pin (131), and releases the rotation of the rotating pin and the associated second gear (141).

8. The device (1) according to claim 7, wherein The control device (40) comprises: - a drive element (41) movable between at least two different positions corresponding respectively to said locked position and said unlocked position, - an actuator (42) engaged with the second end (121b) of the first torsion spring (121) and movable relative to the tilting element (3) about a rotation axis (X3, X7) parallel to the first rotation axis (X1) to move between a passive position in which the actuator (42) does not oppose the first torsion spring (121) and an active position in which the actuator (42) opposes the first torsion spring (121); - kinematic connection means (44, 45) connecting the drive element (41) to the actuator (42) such that the unlocked position of the drive element (41) corresponds to the active position of the actuator and the locked position of the drive element (41) corresponds to the passive position of the actuator.

9. The device according to claim 8, wherein: The actuator (42) comprises a support (43) by means of which the actuator (42) is rotationally connected to the tilting element (3) and is mechanically associated with the kinematic connection means of the control device (40).

10. The device according to claim 9, wherein: The rotation axis of the actuator (42) coincides with the third rotation axis (X3) about which the rotation pin (131) rotates, and wherein the actuator (42) comprises a first bushing (42a), the first bushing being axially supported in a cantilever manner by the support body (43) so as to be coaxially mounted on the first torsion spring (121), and the first bushing being interrupted in the circumferential direction by a radial appendage (42b), the first bushing (42a) being engaged with the second end (121b) of the first torsion spring (121) via the radial appendage.

11. The device (1) according to claim 10 when dependent on claim 4, wherein: The support body (43) comprises: - a body (43a) by which the actuator (42) pivots on the swivel pin (131), and - a second bushing (43b), coaxial with the first bushing (42a) and acting as a spacer between the body (43a) and the first bushing (42a), The second bushing (43b) accommodates the second gear (141) inside and is open in the circumferential direction to allow the transmission member (152) to engage with the second gear (141), thereby causing the second gear to rotate around the second rotation axis (X2) between the main body (43a) and the first bushing (42a).

12. The device (1) according to claim 9, wherein: The rotation axis (X7) of the actuator (42) is different from the third rotation axis (X3) about which the rotation pin (131) rotates, and wherein the actuator (42) comprises: - a body (43a) by which the actuator (42) pivots on the tilting element (3); and - a tooth (49) extending in cantilevered fashion from said body (43a) at a position radially offset relative to the axis of rotation (X7) of said support body (43) to engage said second end (121b) of said first torsion spring (121).

13. The device (1) according to any one of claims 9 to 12, wherein: The kinematic connection device comprises a gear mechanism between a portion (43d) of the main body (43a) of the support body (43) and a rotating member (44), the rotating member being rotatably driven by the movement of the drive element (41) between the unlocking position and the locking position.

14. The device (1) according to any one of the preceding claims, wherein: The tilting element (3) comprises a support frame (30), which in turn comprises two arms (31, 32) whose lengths extend parallel to an armrest axis (Y) orthogonal to the first rotation axis (X1), each arm (31, 32) being pivotally connected to the support structure (2) at its tilting end (31', 32') to rotate about the first rotation axis (X1), and wherein the two arms (31, 32) are spaced apart from each other to define a technical compartment (33).

15. Apparatus according to claim 14 when dependent on claim 11 or 12, wherein The rotating pin (131) is rotatably supported by the two arms (31, 32), and wherein the two arms (31, 32), the transmission member (152), the stopper (10) and the main body (43a) of the support body of the actuator (42) are all composed of formed plates and are assembled so that the surfaces of the corresponding formed plates are parallel to each other.

16. The device according to claim 15, wherein: The first tooth portion (101) and the second tooth portion (151) are obtained along the periphery of a shaped plate forming the stop body (10) and a shaped plate forming the transmission member (152), respectively.

17. The device (1) according to any of the preceding claims, comprises a motion device (50) suitable for directly or indirectly providing a driving torque to the rotating pin (131) so as to rotate the first gear (111), thereby causing a relative movement between the first gear (111) and the stop body (10) and thus causing a relative movement between the tilting element (3) and the stop body (10) when the control device is in the unlocked position.

18. The device (1) according to claim 17, wherein The movement means consists of a second torsion spring (50) which is wound around the rotating pin (131) and has an end (51) constrained to the tilting element (3).

19. The device (1) according to any one of claims 1 to 16, comprising at least one actuator, which is suitable for applying a force directly acting on the stop body (10) to cause a relative movement between the first gear (111) and the stop body (10) and thus cause a relative movement between the tilting element (3) and the stop body (10) when the control device is in the unlocked position.

20. The device according to any one of claims 1 to 16, comprising at least one friction element, which is arranged between the stop body (10) and the support structure (2) and is dimensioned such that: - when the control device (40) is in the locking position, the friction force generated between the stop body (10) and the tilting element (3) is greater than the friction force generated between the stop body (10) and the support structure (2), so that the moving tilting element drags the stop body to move together, and - When the control device (40) is in the unlocking position, the friction force generated between the stop body (10) and the tilting element (3) is smaller than the friction force generated between the stop body (10) and the supporting structure (2), so that the moving tilting element does not drag the stop body to move together.

21. Device according to any of the preceding claims, comprising at least one counterweight associated with the stop body (10), the dimensions of the counterweight and the position relative to the first rotation axis (X1) and the first abutment (4') being arranged so that when the control device (40) is in the unlocked position, the stop body (10) is in a stable position only when it abuts against the first abutment (4').

22. Device (1) according to any of the preceding claims, comprising an appendage (38) extending from the tilting element (3) and a locking system (200) suitable for preventing the tilting element (3) from rotating about the first rotation axis (X1), wherein The locking system (200) comprises: - a locking fork (201) rotatably supported by the support structure (2) about a fifth rotation axis (X5) parallel to the first rotation axis (X1) so as to be movable between a first position and a second position, in which the locking fork (201) engages the attachment (38) to prevent the tilting element (3) from rotating about the first rotation axis (X1), and in which the locking fork (201) does not engage the attachment (38) to allow the tilting element (3) to rotate freely about the first rotation axis (X1); - a pushing device (210), preferably an elastic element, configured to automatically keep the locking fork (201) in the first position, The device (1) comprises an unlocking fork (220), which is rotatably supported around a sixth rotation axis (X6) parallel to the first rotation axis (X1), and the unlocking fork can be moved relative to the locking fork around the sixth rotation axis (X6) by a control device to bring the locking fork from the first position to the second position, Wherein, the control device of the unlocking fork (220) is consistent with the control device (40) of the automatic restraint mechanism (100).

23. The device (1) according to claim 22 when dependent on claim 8, wherein The unlocking fork (220) is mounted on the tilting element (3), preferably close to or located at the attachment (38), and comprises: - a first protrusion (221) engaged with the locking fork (201); and - a second protrusion (222) kinematically connected to the actuator (42) of the control device (40) so that the actuator (42) moves the unlocking fork (220) when changing from the passive position to the active position, thereby pushing the locking fork (201) from the first position to the second position.

24. The apparatus according to claim 23 and claim 9, wherein: The second protrusion (222) of the unlocking fork (220) is slidably engaged on the support body (43) of the actuator (42) of the control device (40) at a guide groove (230), and the guide groove is obtained on the support body (43) and acts as a cam, and wherein the guide groove (230) extends on a first active section (231) and a second neutral section (232), and when the support body (43) rotates along the first active section around its rotation axis (X3, X7), the unlocking fork is caused to rotate, and when the support body (43) rotates along the second neutral section around its rotation axis (X3, X7), the unlocking fork is not caused to rotate, and the extension length of the first active section (231) enables the unlocking fork to be caused to rotate sufficiently to ensure that the locking fork is transferred from the first position to the second position.

25. Apparatus according to any one of the preceding claims, characterised in that The device is an armrest, in particular an armrest for a vehicle.

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