ARMREST ELEMENT WITH ADDITIONAL MODULE

Description

[0001] The invention relates to an additional module for an armrest element of a seat, in particular a vehicle seat. Furthermore, the invention relates to an armrest arrangement for a seat, in particular for a vehicle seat, having an armrest element on which an additional module is arranged. Furthermore, the invention relates to a vehicle seat having an armrest arrangement.

[0002] Such armrest arrangements are used, for example, in commercial vehicles such as tractors, forklifts, construction machinery, and special-purpose vehicles. A wide variety of control functions can be integrated into the armrest. Such control functions can affect the vehicle seat or other equipment in the vehicle. It may also be desirable to integrate communication devices or various display devices into the armrests. Finally, it may be desirable to provide storage facilities, such as cup holders or similar, in or on the armrests. Depending on customer requirements, the integration of such devices requires a wide variety of designs for the armrest arrangements. This represents a significant expense for the manufacturers. Furthermore, it may be desirable to retrofit existing vehicle seats or armrests with such devices.However, existing armrests may already be equipped with features such as adjusting the angle of the armrest. These functionalities should not be compromised during a redesign.

[0003] Document DE 101 10 330 A1 is known from the prior art. This document shows a center console with an armrest. The armrest is equipped with a pivoting cover. The height of the armrest can be adjusted using a gear mechanism and an electric drive.

[0004] The object of the present invention is therefore to provide an additional module for an armrest element which solves the problems mentioned above.

[0005] The object is achieved by an additional module for an armrest element of a seat, in particular a vehicle seat, according to the present claim 1. According to the invention, the additional module can be arranged on the armrest element, wherein a transmission device is provided in the additional module, by means of which a first operating element of the armrest element can be operated indirectly, wherein a movement of a second operating element of the additional module can be transmitted to the first operating element of the armrest element by means of the transmission device, wherein the first operating element and the second operating element can be mechanically coupled by means of the transmission device. A transmission of the movement can preferably be understood as a transmission of a force and / or a torque and / or an (angular) velocity and / or similar suitable physical quantities from the first operating element to the second operating element.

[0006] With such an additional module according to the invention, the production of the armrest element does not have to be changed. A corresponding additional module can then be attached to the armrest element according to customer requirements. The additional module can also be replaced at a later date in order to adapt the armrest element to any changed requirements. Accordingly, existing armrest elements can also be retrofitted with an additional module. The production of armrest elements can also be simplified. For example, a basic version can be produced which is then provided with an additional module designed according to customer requirements. This thus provides a modular armrest arrangement with an armrest element. The armrest element can preferably be pivoted about a pivot axis (S) relative to the vehicle seat.Such pivoting is generally understood to mean the inclination of the armrest element. Preferably, the first operating element serves to adjust the inclination of the armrest element and comprises a drive element. Such a drive element is preferably operatively connected to an inclination adjustment mechanism. According to the invention, the first operating element can be operated manually by the user. The arrangement of the additional module makes access to the first operating element difficult or even impossible. For this purpose, the additional module is equipped with a second operating element, which can advantageously be operated manually by the user. A corresponding movement of the second operating element is transmitted to the first operating element by the transmission device. Of course, an additional module can be used for an armrest element on a right-hand side of the seat as well as for an armrest element on a left-hand side of the seat.

[0007] The mechanical coupling or transmission is preferably non-positive and / or positive. Such a non-positive and / or positive coupling or transmission enables indirect operation of the first operating element. According to a preferred embodiment, the second operating element comprises a second coupling element which is directly or indirectly non-positively and / or positively coupled to a first coupling element of the first operating element. A direct coupling is understood to mean that the two coupling elements are coupled in such a way without further coupling elements being provided. Accordingly, an indirect coupling is understood to mean that further coupling elements are provided for the (force) transmission between the first and the second coupling element. The first coupling element and the second coupling element preferably have spur gear teeth.Preferably, the spur gearing of the first coupling element is directly or indirectly coupled to the spur gearing of the second coupling element. Here, too, indirect coupling is understood to mean that further coupling elements are interposed for power transmission. Preferably, the first coupling element is designed as a first gear provided with spur gearing, and the second coupling element is designed as a second gear provided with spur gearing. Preferably, the first gear or its gearing meshes with the wide gear or its gearing. It would also be conceivable for further gears to be interposed between the first and second gears, thereby creating a gear arrangement.

[0008] It would also be conceivable for the transmission of movement (force, torque, (angular) speed, etc.) to occur via a belt arrangement. This belt arrangement could preferably provide a force-locking transmission between a correspondingly suitable and intended first coupling element and a correspondingly suitable and intended second coupling element. According to a further advantageous embodiment, the belt arrangement could provide a form-locking and thus slip-free transmission between a correspondingly suitable and intended first coupling element and a correspondingly suitable and intended second coupling element. A toothed belt, for example, could be used for this purpose.Other traction drive systems are also conceivable, such as chain drives, which provide power transmission between a correspondingly suitable and intended first coupling element and a correspondingly suitable and intended second coupling element. Power transmission via a rolling element gear, worm gear, or planetary gear between a correspondingly suitable and intended first coupling element and a correspondingly suitable and intended second coupling element would also be conceivable. Suitable force-locking connections, for example frictional connections, would also be conceivable.

[0009] According to a further advantageous embodiment, the transmission device causes an increase in torque or an increase in (angular) speed of the first operating element (5). Preferably, a transmission ratio is selected between the second coupling element and the first coupling element, so that the torque transmitted to the first coupling element or the (angular) speed transmitted to the first coupling element is increased. The transmission ratio (i) can be calculated using various relationships between a driving structural element (input), in this case the second coupling element, and the driven structural element (output), in this case the first coupling element: For belt drives, via the effective diameter (d) of the belt pulleys: i = d output / d input . For gear, toothed belt and chain drives, via the number (z) of teeth on the gear wheels: i = z output / z input .Neglecting losses, the transmitted torque (M) is: i = M output / M input . This results in: . M output = M drive * i ; i = d Abtrieb d Antrieb ; i = z Abtrieb z Antrieb For i > 1, the transmitted torque is increased. This is also referred to as a reduction ratio. This has the advantage that the user can adjust the angle of the armrest element much more easily, i.e., with less effort. The speeds n of the gear wheels, or rather their angular velocities ω, behave inversely to the torques. The higher the torque, the lower the speed. This results in: ω Output = ω Drive * 1 / i ; i = d Abtrieb d Antrieb ; i = z Abtrieb z Antrieb For i < 1, the transmitted angular velocity or rotational speed is increased. This can be advantageous if the first control element is designed such that a large number of revolutions are necessary to effect a noticeable change in inclination.

[0010] According to a further advantageous embodiment, the additional module can be arranged on the armrest element by means of a force-fitting and / or form-fitting connection. For example, the use of a screw connection, a snap or clip connection, a plug connection, or another similar connection is conceivable. According to the invention, the additional module has a shell-like base body. The base body has an opening surface designed such that the base body can rest against an underside of the armrest element. The armrest element preferably projects partially into the opening surface. Furthermore, it is advantageous that the base body is essentially rectangular. The base body preferably comprises a base wall. Advantageously, the base wall is opposite the opening surface.Preferably, the base body further comprises two elongated side walls and a front end wall. Preferably, the elongated side walls and the front end wall are arranged on the base wall.

[0011] According to a further preferred embodiment, the second operating element is rotatably mounted in the base body. Preferably, the second operating element is cylindrical, preferably with a circular cross-section. Preferably, the second operating element can be wheel-shaped or roller-shaped. Preferably, the second operating element is rotatably arranged by means of a bearing shaft on at least one bearing element, preferably two bearing elements of the base body. According to the invention, the base body has a first opening into which the second operating element is arranged and / or projects at least partially. Preferably, the first opening is provided in the base wall. The user can therefore operate or move the second operating element through the first opening and indirectly the first operating element.

[0012] According to a further preferred embodiment, the additional module has a first extension module. The first extension module can preferably be arranged on the base body. Advantageously, the first extension module is an operating element and / or a display element and / or a storage element. A conceivable operating element is, for example, a joystick, a steering wheel (mini-steering wheel), a touch or switch unit, a front loader operating unit and the like. Functions relating to the seat, functions relating to the vehicle or other device functions can advantageously be operated. Functions of communication means or communication devices could also advantageously be operated. A display element is, for example, a display, a touchscreen, (warning) lights, LEDs or the like. A storage element is, for example, a cup holder, tray-like elements or the like.Alternatively, the first extension module can be a covering device. Preferably, the first extension module can be arranged on the front end wall of the base body. The first extension module can therefore extend beyond a longitudinal extension of the armrest element.

[0013] According to a further preferred embodiment, the base body has a second opening. The front end wall preferably has the second opening. Preferably, a fastening projection of the first expansion module can be inserted into the second opening or passed through the second opening. Preferably, the second opening and the fastening projection are complementary. Preferably, the fastening projection comprises at least one receptacle in which a securing element can be arranged. Preferably, the fastening projection projects through the second opening into the base body, with the securing element being inserted into the at least one receptacle. The securing element lies on an inner surface of the end wall, such that the first expansion module is secured against being pulled out. Preferably, the securing element is a U-shaped element, preferably a spring element.Preferably, the two legs of the U-shaped element each engage in a groove-shaped receptacle. The first extension module is thus advantageously attached to the base body by means of a detachable connection. The first extension module can therefore be replaced very easily if necessary.

[0014] According to a further preferred embodiment, the additional module has a second extension module. The second extension module can preferably be arranged on the base body. Advantageously, the second extension module is an operating element and / or a display element and / or a storage element. A conceivable operating element is, for example, a joystick, a steering wheel (mini-steering wheel), a touch or switch unit, a front loader operating unit, and the like. Functions relating to the seat, functions relating to the vehicle, or other device functions can advantageously be operated. Functions of communication means or communication devices could also advantageously be operated. A display element is, for example, a display, a touchscreen, (warning) lights, LEDs, or the like. A storage element is, for example, a cup holder, a tray-like element, or the like.The second extension module can preferably be arranged on a side wall of the base body. The second extension module can preferably extend beyond a width of the armrest element. The second extension module is preferably arranged on the side wall of the base body by means of a force-fitting and / or form-fitting connection. Such a connection can be, for example, a screw connection, a snap or clip connection, a plug connection, or another similar connection.

[0015] The present object is also achieved by an armrest arrangement for a seat, in particular for a vehicle seat. The armrest arrangement comprises an armrest element on which an additional module according to one of the preceding embodiments is arranged. The armrest arrangement can be equipped with all of the features already described above in the context of the additional module, individually or in combination with one another, and vice versa. According to a further preferred embodiment, the armrest element is pivotally connected to an armrest support by means of a bearing axis. An adjusting device for setting an angle of inclination between the armrest element and the armrest support is preferably provided. The adjusting device preferably comprises the first operating element. The first operating element is preferably mounted so as to be rotatable about its longitudinal axis (L), at least in sections, within a housing of the armrest element.Preferably, the first control element is operatively connected to a tilt adjustment mechanism.

[0016] The present object is also achieved by a vehicle seat with an armrest arrangement according to one of the previously described embodiments. The vehicle seat can be equipped with all of the features already described above in connection with the additional module and the armrest arrangement, individually or in combination with one another, and vice versa.

[0017] Further advantages, objects, and features of the present invention will become apparent from the following description of the accompanying figures. Similar components may have the same reference numerals in the various embodiments.

[0018] The figures show: Fig. 1 is a plan view of an armrest element according to one embodiment; Fig. 2 is a sectional view of an armrest element along section line CC; Fig. 3 is a sectional view of an armrest element along section line DD; Fig. 4 is an exploded view of an armrest arrangement according to one embodiment; Fig. 5 is a plan view of an armrest element according to one embodiment; Fig. 6 is a sectional view of an armrest element along section line AA; Fig. 7 is a sectional view of an armrest element along section line BB; Fig. 8 is a perspective view of an additional module according to one embodiment; Fig. 9 is a perspective view of an additional module according to one embodiment; Fig. 10 is a perspective view of an additional module according to another embodiment; Fig. 11 is a perspective view of an additional module according to another embodiment;Fig. 12 shows a perspective view of an armrest arrangement according to a further embodiment; Fig. 13 shows a perspective view of an armrest arrangement according to a further embodiment; Fig. 14 shows a perspective view of an armrest arrangement according to a further embodiment; Fig. 15 shows a perspective view of an armrest arrangement according to a further embodiment; Fig. 16 shows a perspective view of an armrest arrangement according to a further embodiment; Fig. 17 shows a vehicle seat with an armrest arrangement.

[0019] In the Figures 1 to 17an additional module 1 for an armrest element 2 of a seat, in particular a vehicle seat 100, is shown, wherein the additional module 1 can be arranged on the armrest element 2, wherein a transmission device 4 is provided in the additional module 1, by means of which a first operating element 5 of the armrest element 2 can be operated indirectly, wherein the transmission device 4 can transmit a movement of a second operating element 6 of the additional module 1 to the first operating element 5 of the armrest element 2, wherein the first operating element 5 and the second operating element 6 are mechanically coupled by the transmission device 4.

[0020] Furthermore, in the Figures 1 to 7 and 12 to 16An armrest arrangement (3) for a seat, in particular for a vehicle seat (100), comprising an armrest element (2) on which an additional module (1) is arranged, is shown. The additional element (1) and the armrest element (2) extend along a height axis Z, a longitudinal axis X, and a width axis Y.

[0021] The armrest element 2 comprises a cushion attachment 28, which is arranged on a housing 27. The armrest element 2, or the housing 27, is pivotally connected to an armrest support 24 by means of a bearing axis 23. An angle of inclination α can be defined between the armrest element (2) and the armrest support (24), or between the central axes 2b, 24a assigned to these elements. This is shown, for example, in the Figures 2 and 6visible. An adjustment device 25 is provided for setting an angle of inclination α between the armrest element 2 and the armrest support 24. The adjustment device 25 comprises the first operating element 5. The first operating element 5 is rotatably mounted about its longitudinal axis L 1 at least in sections within a housing 27 of the armrest element 2 and is operatively connected to an inclination adjustment mechanism 26. The housing 27 comprises an opening 27b on a lower side 27a along the vertical axis Z, in which opening the first operating element 5 is arranged at least in sections and is accessible. If no additional module 1 is arranged on the armrest element 2, the first operating element can be manually operated by a user using the opening 27b.

[0022] In the Figures 2 to 7 The adjustment device 25 or the inclination adjustment mechanism 26 can be seen. Figure 2 is a sectional view according to the section lines CC in Figure 1Figure 3 is a sectional view along the section lines DD in Figure 2 . Figure 6 is a sectional view along the section lines AA in Figure 5 . Figure 7 is a sectional view according to the section lines BB in Figure 6 . In the Figures 2 and 3 An armrest element is shown without the additional module 1. In the Figures 6 and 7An additional module is provided on the armrest element. The adjustment device 25, or the inclination adjustment mechanism 26, comprises a rotating spindle 29, at the first end of which the first operating element 5 is arranged. The second end of the rotating spindle 29 is mechanically engaged with a support element 30, which is non-rotatably attached to the armrest support 24. To adjust the angle of inclination α, the rotating spindle 29 can be moved against the support element 30 via a rotary movement of the first operating element. Furthermore, a bearing element 31 is provided for the rotating spindle 29. However, the invention is not limited to an inclination adjustment mechanism 26 configured in this way.

[0023] The additional module 1 is in the Figures 4 to 17 shown and can be used both for an armrest element 2, which can be arranged on the left side of the vehicle seat (see for example Figures 1 to 3) as well as for an armrest element 2, which can be arranged on the right side of the vehicle seat 100 (see for example Figures 5 to 7). The mechanical coupling can be force-locking and / or form-locking. In the present case, a form-locking coupling is shown, although the invention is not intended to be limited to such a coupling. The second operating element 6 comprises a second coupling element 8, which is directly coupled in a form-locking manner to a first coupling element 7 of the first operating element 5. The first coupling element 7 and the second coupling element 8 have spur gear teeth 7a, 8a, wherein the two spur gear teeth 7a, 8a mesh. In the present case, the second operating element 6 and the second coupling element 8 are designed as one element, or gear. The first coupling element 7 is a tooth module with the spur gear teeth 7a, which is integrated in the first operating element 5. The meshing of the spur gear teeth 7a, 8a of the first coupling element 7 and the second coupling element 8 is described in the Figures 6 to 9 clearly visible.

[0024] The transmission device 4 can cause an increase in torque or an increase in angular velocity of the first control element 5. For this purpose, the transmission ratio i between the second coupling element 8 and the first coupling element 7 can be selected such that the torque or the angular velocity of the first coupling element is increased. Figure 7 For example, an increase in angular velocity is achieved. For example, i = 12 / 18 = 0.67, which means ω output = ω input * 1.5.

[0025] The additional module 1 has a shell-like base body 9. The base body 9, in turn, has an opening surface 10, which is designed such that the base body 9 can rest against an underside 2a of the armrest element 2. The arm element 2 can also protrude partially into the opening surface 10. The base body 9 is essentially rectangular and comprises a base wall 11, which is opposite the opening surface 10, two side walls 12, a front end wall 13, and a rear end wall 33. The two side walls 12 and the two end walls 13, 32 surround the opening surface 10. An upper edge of the two side walls 12 is designed such that the base body 9 is adapted to the corresponding contours of the armrest element 2. In the present case, the upper edges of the two side walls 12 are curved or essentially S-shaped.The front end wall 13 is aligned substantially parallel to the vertical axis Z, while the rear end wall 32 is aligned at an angle to the vertical axis Z. The additional module 1 can be arranged on the armrest element 2 by means of a force-fitting and / or form-fitting connection. In the present case, for example, openings 32 are provided in the base body through which a screw can be passed. The second operating element 6 is mounted in the base body 9 so as to be rotatable about a longitudinal axis L 2 . The second operating element 6 is circularly cylindrical in the form of a gear. The second operating element 6 is rotatably mounted on at least one, preferably two, bearing elements 15 of the base body 9 by means of a bearing shaft 14. The bearing shaft 14 extends through a sleeve element 33 of the second operating element 6 or the second coupling element 8.The base body 9 has a first opening 16 into which the second operating element 6 is arranged and / or protrudes at least partially. Through this first opening 16, the user can actuate the second operating element 6 or the second coupling element 8 and thus indirectly actuate the first operating element 6.

[0026] The additional module 1 has a first extension module 17, which can be arranged on the base body 9. According to the embodiment according to the Figures 8 and 9 the first extension module 17 is a cup-like storage element. According to the embodiments according to the Figures 10 to 14 first expansion module 17 a control element in the form of a joystick. According to the embodiments according to the Figures 4 and 15 to 16The extension module 17 is a covering device in the form of a cladding element. Of course, the first extension module 17 can be equipped in any other way, in the form of operating elements and / or display elements and / or storage elements. The first extension module 17 is arranged on the front end wall 13 of the base body 9, so that the first extension module 17 projects over a longitudinal extent along the longitudinal axis X of the armrest element 2. For this purpose, the base body, or the front end wall, has a second opening 18, into which a fastening projection 19 of the first extension module (17) can be inserted or passed through. The second opening 18 and the fastening projection 19 are complementary. As shown in the Figure 9As can be clearly seen, the fastening projection 19 has a pin-like section 19a. A receptacle with a groove 20a is provided laterally from the pin-like section 19a. The fastening projection is guided through the second opening 18, so that the receptacles 20, or rather the grooves 20a, are located in the base body 9. A securing element 21 can then be arranged in the receptacles 20. The securing element 21 can be U-shaped, as shown, for example, in the Figures 4 and 9 The securing element comprises two legs 21a, each of which is inserted into a groove 20a. The securing element 21, or a horizontal connecting section 21b, then rests against an inner wall of the front end wall 13. The securing element 21 is preferably designed as a spring plate. This secures the first expansion module 17 against being pulled out. Figures 12 to 14show an armrest arrangement 3 with a first extension module 17 in the form of a joystick.

[0027] As can be seen from the Figures 14 to 16 As can be seen, the additional module 1 can have a second extension module 22, which can be arranged on the base body 9, wherein the second extension module 22 can be an operating element and / or a display element and / or a storage element. According to the embodiment according to the Figures 13 and 14 the second extension module 22 is an elongated, bowl-shaped storage element or storage compartment. According to the embodiment according to the Figures 15 and 16The second extension module 22 is an elongated control element in the form of a switch panel, which comprises a plurality of switches or buttons. By means of these, seat functions, vehicle functions or other device functions can preferably be controlled. The second extension module 22 can be arranged on a side wall 12 of the base body 9, so that the second extension module 22 projects beyond a width along the width axis Y of the armrest element 2. Preferably, the side wall 12 is selected which is directed away from the seat area. A corresponding connection between the second extension module 22 and the base body can be a force-fitting and / or form-fitting connection. For example, screw connections, plug connections or snap connections come into consideration here. The second extension module 22 and the first extension module 17 can be adapted as desired to customer requirements.Due to the modular design of the armrest arrangement 3 or the additional module 1, it can be redesigned as easily as possible. List of reference symbols

[0028] 1 Additional module 2 Armrest element 2a Underside of the armrest element 2b Central axis of the arm element 3 Armrest arrangement 4 Transmission device 5 First operating element 6 Second operating element 7 First coupling element 7a End gearing of the first coupling element 8 Second coupling element 8a End gearing of the second coupling element 9 Base body 10 Opening area of the base body 11 Base wall 12 Side walls 13 End wall 14 Bearing shaft 15 Bearing element 16 First opening of the base body 17 First extension module 18 Second opening of the base body 19 Fastening projection 19 a Pin-like section 20 Receptacle 20 a Groove of the receptacle 21 Securing element 21a Leg of the securing element 21b Connecting section of the securing element 22 Second Extension module 23 Bearing axis 24 Armrest support 24a Center axis of the armrest support 25 Adjustment device 26 Tilt adjustment mechanism 27 Armrest element housing 27a Bottom side of the housing 27b Opening of the housing 28 Upholstery attachment29Rotating spindle 30Support element 31Bearing element 32Openings 33Sleeve element 100Vehicle seat αInclination angle L1Longitudinal axis of the first control element L2Longitudinal axis of the second control element XLongitudinal axis YWidth axis ZHeight axis

Claims

1. Add-on module (1) for an armrest element (2) of a seat, in particular a vehicle seat (100), wherein the add-on module (1) can be arranged on the armrest element (2), wherein a transmission device (4) is provided in the add-on module (1), by means of which a first operating element (5) of the armrest element (2) can be indirectly operated, wherein the transmission device (4) can transmit a movement of a second operating element (6) of the add-on module (1) to the first operating element (5) of the armrest element (2), wherein the first operating element (5) and the second operating element (6) can be mechanically coupled by the transmission device (4), wherein the second operating element (6) can be operated manually characterised in that the add-on module (1) has a shell-like base body (9), the base body (9) having an opening surface (10) which is designed such that the base body (9) can rest against an underside (2a) of the armrest element (2), the base body (9) having a first opening (16) in which the second operating element (6) is arranged and / or projects at least in sections, a user being able to actuate the second operating element (6) through this first opening (16).

2. Add-on module (1) according to claim 1, characterised in that the mechanical coupling is non-positive and / or positive, the second operating element (6) comprises a second coupling element (8) which is directly or indirectly coupled to a first coupling element (7) of the first operating element (5) in a non-positive and / or positive manner, wherein the first coupling element (7) and the second coupling element (8) have a face toothing (7a, 8a), wherein the face toothing (7a) of the first coupling element (7) is directly or indirectly coupled to the face toothing (8a) of the second coupling element (8).

3. Add-on module (1) according to claim 2, characterised in that an increase in torque or an increase in angular velocity of the first operating element (5) is brought about by the transmission device (4), wherein a transmission ratio is selected between the second coupling element (8) and the first coupling element (7), so that the torque transmitted to the first coupling element (7) or the angular velocity transmitted to the first coupling element is increased.

4. Add-on module (1) according to one of the preceding claims, characterised in that the add-on module (1) can be arranged on the armrest element (2) by means of a non-positive and / or positive connection, wherein the base body (9) is essentially rectangular in shape, wherein the base body (9) comprises a base wall (11), two elongated side walls (12) and a front end wall (13).

5. Add-on module (1) according to claim 4, characterised in that the second operating element (6) is rotatably mounted in the base body (9), wherein the second operating element (6) is of cylindrical design, wherein the second operating element (6) is rotatably arranged on at least one mounting element (15) of the base body (9) by means of a mounting shaft (14).

6. Add-on module (1) according to claim 4, characterised in that the add-on module (1) has a first extension module (17) which can be arranged on the base body (9), wherein the first extension module (17) is an operating element and / or a display element and / or a storage element, wherein the first extension module (17) can be arranged on the front end wall (13) of the base body (9).

7. Add-on module (1) according to claim 5, characterised in that the front end wall (13) has a second opening (18) into which a fastening projection (19) of the first extension module (17) can be inserted, wherein the second opening (18) and the fastening projection (19) are of complementary design, wherein the fastening projection (19) comprises at least one receptacle (20), in which a securing element (21) can be arranged.

8. Add-on module (1) according to claim 4, characterised in that the add-on module (1) has a second extension module (22) which can be arranged on the base body (9), wherein the second extension module (22) is an operating element and / or a display element and / or a storage element, wherein the second extension module (22) can be arranged on a side wall (12) of the base body (9).

9. Armrest arrangement (3) for a seat, in particular for a vehicle seat (100) with an armrest element (2), on which an add-on module (1) according to one of the preceding claims is arranged.

10. Armrest arrangement (3) according to claim 9, characterised in that the armrest element (2) is pivotably connected to an armrest support (24) by means of a bearing axis (23), wherein a adjusting device (25) is provided for setting an angle of inclination (α) between the armrest element (2) and the armrest support (24), wherein the adjustment device (25) comprises the first operating element (5), wherein the first operating element (5) is mounted rotatably about its longitudinal axis (L1) at least in sections within a housing (27) of the armrest element (2) and is operatively connected to an inclination adjustment mechanism (26).

11. Vehicle seat (100) with an armrest arrangement (3) according to one of the claims 9 to 10.