EQUIPMENT COMPONENT FOR A VEHICLE.

Abstract

The present invention relates to an equipment component, more particularly to equipment (10) for a vehicle comprising a wing device comprising at least one wing (12a, 12b), the wing (12a, 12b) being pivotally mounted about a rotation axis (a) between a first pivot position and a second pivot position, and wherein the wing (12a, 12b) comprises a base piece (21) and an extension piece (22), which is mounted so that it can be translated with respect to the base piece (21) between a base position and an extended position, with an adjustment device comprising at least one motorized drive (14) and a transmission (44, 44') for performing the pivoting and translational movement of the wing (12a, 12b).The peculiarity of the present equipment is that the transmission (44, 44') converts a pivoting movement of the drive (14) into a translational movement of the extension piece (22), converting a torsional force (M1, M2) in the base piece (21) to generate the axis of rotation (a), with which the wing (12a, 12b) can pivot between the first pivoting position and the second pivoting position.

Description

The present invention relates to an equipment component for a vehicle. According to the present invention, a vehicle may be a land, air, or water vehicle. BACKGROUND OF THE INVENTION The equipment component or device that is the subject of this invention is well known in the prior art due to its use. In the prior art, the device is a headrest. The headrest includes a headrest on which a wing is pivotally mounted on both sides. The headrest has a motorized drive for pivoting both wings together and a motorized drive for the translational movement of an extension piece of the wing relative to a base piece. This prior art headrest is susceptible to improvement due to its high cost and the effort required to control the motorized drives. Furthermore, these motorized drives resulted in a high weight for the device. Therefore, an object of the present invention is to provide equipment in which the same functions can be guaranteed with less effort, i.e., the ability to rotate and the translational movement of an extension piece with respect to a base piece. The object of the present invention was achieved by means of a drive device with the characteristics claimed in claim 1. {'ZLonn / eznz / q / Y SUMMARY OF THE INVENTION The equipment comprises at least one wing, in particular two wings. The wing can pivot about a base around a rotation axis between a first pivot position and a second pivot position and includes a base piece and an extension piece that can translate relative to the base piece between a base position and an extended position. In the initial position, the base piece and the extension piece are nested. In the deployed position, the extension piece moves to an extended position relative to the base. The length of the wing is greater in the extended position than in the initial position. The movement of the wing between a non-use position and a use position consists of the movement of the entire wing between the first pivot position and the second pivot position and the movement of the extension piece relative to the base piece between the initial position and the extended position. The pivoting motion of the wing and the translational motion of the extension piece relative to the base piece are achieved by means of a drive device comprising at least a motorized drive and a transmission. For example, the pivoting motion and the translational motion occur sequentially. For instance, the pivoting motion may occur first, followed by the translational motion. Alternatively, the translational motion may also occur first, followed only by the pivoting motion. Through the gearing mechanism, a rotational movement of the drive shaft is converted into a translational movement of the extension piece relative to the wing's base piece. The gearing is designed to generate a torque on the wing around the axis of rotation, allowing the wing to pivot between the first and second pivot positions. In other words, the torque produced when the rotational movement is converted into a translational movement is used to pivot the wing. During the pivoting movement of the wing, for example, there is no relative movement between the base piece and the extension piece. For example, the pivoting movement and the translational movement take place separately. For example, the movement from the non-use position to the use position is performed first by the pivoting movement and then by the translational movement. The transition from the use position to the non-use position occurs, for example, by performing the translational movement first and then the pivoting movement. The sequence of movements, that is, the pivoting and translational movements, can be controlled by a control device with at least one control means. This at least one control means is, for example, a spring. Since the gearing that drives the translational movement also generates torque for pivoting the wing, separate motors are not required for pivoting and translational movement. This results in reduced control effort and cost savings. Furthermore, this solution is accompanied by a decrease in equipment weight due to the reduction in motorized drives. For example, the base is pivotally mounted on the base around a rotation axis. The at least one wing then forms a pivot joint with the base. For example, when two wings are provided on the base, a central drive shaft can be formed in the base that drives the pivoting movement of both bases. The central drive shaft directly or indirectly drives the wing's rotation axis, for example. The base piece of the wing forms a pivot joint with the axis of rotation, for example. The base piece, for example, pivots about the axis of rotation. pzLonn / cznz / q / Y The axis of rotation is, for example, simultaneously the drive axis of the drive device. The pivoting axis can be driven, for example, by the drive axis. The wing drive shaft comprises, for example, first drive means that introduce a torsional force into the base and cooperate with second drive means of the wing extension to achieve translational motion. The first drive means induces a torsional force at the base, causing the wing to rotate. For example, a gear that is rigidly attached to the drive shaft meshes with a toothed rail or rack on the wing. The rotation of the gear causes the base, and therefore the wing, to rotate. The toothed rail is assigned, for example, to the wing extension. The rotation of the gear, meshing with the toothed rail, causes the extension motion. The gearing device comprises, for example, a toothed wheel interacting with a toothed rail or two interacting toothed wheels. For example, the toothed rail is assigned to the extension piece, meshing the toothed wheel with the toothed rail and thus enabling the extension piece to be driven. The toothed wheel is arranged, for example, on the axis of rotation or on a separate drive shaft. According to an alternative embodiment of the present invention, in addition to a toothed transmission, the gearing device comprises a spindle transmission with a spindle and a spindle nut. For example, the spindle is rotatably mounted on the base piece, and the extension piece comprises a spindle nut that is firmly connected to the extension piece and meshes with the spindle thread. According to an alternative embodiment of the present invention, the spindle nut can also be rotatably mounted on the base piece, and the spindle is firmly connected to the extension piece. The spindle or the spindle nut can be driven, for example, by means of a gear. According to another alternative embodiment of the present invention, a toothed wheel interacts with a flexible element, such as a chain, cable, or toothed belt. The flexible element is arranged so that it rotates during the rotary motion of the drive toothed wheel, which is coupled to a toothed wheel attached to a winding roller. The flexible element winds onto the winding roller, allowing the extension piece to move between its initial and extended positions. The flexible element is connected to the extension piece and, via a diverter, to the winding roller, which is assigned to the base piece. pzLonn / cznz / q / Y Another alternative embodiment of the present invention provides a friction drive, with a friction wheel driven by the drive which is engaged with a friction track of the extension piece, so that the extension piece can be moved between the initial position and the extended position. The driving force for the relative movement between the extension piece and the base piece acts on the extension piece at a distance from the axis of rotation, for example. In this way, a torsional force can be generated in the wing, which performs the pivoting movement. In the first pivot position, for example, the force preventing relative movement between the base piece and the extension piece is greater than the force causing the pivoting motion. In the first pivot position, for example, the weight of the extension piece counteracts relative movement between the base piece and the extension piece. Means can be provided to counteract relative movement between the base piece and the extension piece. In this way, the sequence of movements can be controlled so that the rotational movement of the base piece occurs before the translational movement of the extension piece relative to the base piece. For example, a spring deflects the extension piece back to its initial position relative to the base piece. The spring {'ZLonn / eznz / q / Y' represents a means by which the extension piece is loaded back to its initial position relative to the base piece, thus counteracting a relative movement. Alternatively or additionally, for example, a spring deflects the base piece to a second pivot position to control the sequence of rotational movement of the base piece and translational movement of the extension piece. {'ZLonn / eznz / q / Y For example, the base piece has first guiding means, and the extension piece has second guiding means to movably support the extension piece on the base piece. The guiding means comprise, for example, sliding bearing means by which the extension piece is movably guided on the base piece. Alternatively, other common bearings, such as ball and roller bearings, can also be considered. The support means are designed, for example, so that the extension piece is held captive within the base piece. At least one final position of the wing relative to the base is defined, for example, by at least one stop surface. The winghead, for instance, has at least one stop surface that interacts with at least one counter-surface of the wing, with the stop surface and the counter-surface in contact in the first pivot position and / or the second pivot position. The interaction of the stop surface with the counter-surface induces a counter-torsional force in the second pivot position of the base, which is the cause of the initial translational movement of the extension relative to the base. For example, the device includes two wings. Depending on the application, it's possible, for instance, to equip each wing with a speaker to create a stereo effect. Alternatively, it's also possible to rest on both wings. The at least one wing comprises, for example, a speaker device with at least one speaker, the speaker being able to be connected to a vehicle audio system. The equipment is, for example, a headrest, which includes a headrest and a clamping device for securing the headrest to the back of a vehicle seat, the headrest thus forming the base. Wings are mounted on the headrest and on both sides of it. For example, the wings are adjustable in a plane parallel to the sagittal plane of a seat occupant in a vehicle seat. Alternatively, the pivot plane of the wings can also form an obtuse angle with the sagittal plane. A central axis of the wing is directed approximately vertically upward or downward with respect to the axis of rotation, for example, in the first pivot position. In this position, the side view and freedom of movement of the seat occupant are not restricted. When the extension piece is in the initial position, it occupies little space. If, in the operating position, the wings are in the second pivoting position and the extension piece is in the extended position, the wings protrude forward, for example, approximately horizontally. In this way, for example, a speaker device mounted on the extension piece can be brought into an operating position where the speaker is advantageously positioned relative to the seat occupant. According to an alternative embodiment of the present invention, the device is, for example, an armrest, with a vehicle seat back or a separate base attached to the vehicle body forming the base, and the wing forming the armrest. The wing can then be stored to save space in the side of the vehicle seat back or in a recess in the backrest when the wing is in the first pivoting position and the extension piece is in the initial position. When in use, for example, the armrest can be rotated to the second pivoting position and the extension piece can be moved to the extended position. Two examples of embodiments of the present invention are described by way of example in the following description of the figures, also with reference to the schematic drawings. For the sake of clarity, also with regard to the different embodiments, identical or comparable parts, elements, or areas are indicated by the same reference numbers, sometimes also with the addition of lowercase letters. Features described, illustrated, or disclosed only in connection with one exemplary embodiment of the present invention may also be provided in any other exemplary embodiment within the scope of the present invention. Such modified embodiments are included in the present invention, even if not explicitly shown in the accompanying drawings. All the features described are essential to the present invention. The disclosure of this patent application also includes the content of the cited documents and the described prior art devices in their entirety, also for the purpose of including one or more features of the objects disclosed therein in one or more claims of this patent application. Such modified embodiments are also included in the present invention, even if they are not shown in the accompanying drawings. ML / E / ZuZo / uuZou BRIEF DESCRIPTION OF THE DRAWINGS The figure shows a schematic plan view of a headrest with two wings. Figure Ib is a perspective view of a wing in the non-use position. Figure 2 is a front view of the wing according to Figure 2. Figure 3 shows a view according to arrow A in Figure 2. Figure 4 is a front view of the wing in an intermediate position, with the wing pivoted between a first position and a second position. Figure 5 shows a view according to arrow B in Figure 4. Figure 6 is a front view of the wing in the position of use. Figure 7 shows a view according to arrow C in Figure 6. Figure 8 shows a view of a second embodiment of the gear mechanism for wing drive. Figure 9 shows a view according to arrow D in Figure 8. DETAILED DESCRIPTION OF THE INVENTION In the present embodiment, the device is a headrest. The device is shown in the figures of this patent application pzLonn / cznz / q / Y with reference number 10. The headrest comprises a base 11, here in the form of a headrest 33 with a head contact surface 37. The headrest 33 is shown in the figures only by means of a dashed line. The headrest 33 is detachably mounted on a vehicle seat back, for example by means of a fastening device, or forms an integral part of a seat, for example. The attachment of the headrest 33 is not relevant for the purposes of the present invention. Two wings, 12a and 12b, are pivotally mounted at end 33. Wing 12a is provided with an arm 20a, and wing 12b with an arm 20b. Wings 12a and 12b serve to adjust a speaker device 35 and / or a microphone provided on the respective wings 12a and 12b, for example, between an operating position and a non-operating position. According to an alternative embodiment of the present invention, only one wing could be mounted at end 33. Each of the wings 12a and 12b comprises a base piece 21 and an extension piece 22. The extension piece 22 is movable relative to the base piece 21 in translation. The movement of each wing 12a and 12b between a non-use position and a use position consists of the pivoting movement of the wings 12a and 12b between a first pivot position and a second pivot position, and the movement of each extension piece 22 between an initial position and an extended position. In the initial position, the base piece 21 and the extension piece 22 are nested. In the extended position, the base piece 21 and the extension piece are in an extended configuration in which the length of the respective arms 20a and 20b is greater than in the initial position. The movement of the two wings 12a and 12b is driven by a central drive device 40. The drive device 40 comprises a motor drive means 14, for example, an electric motor, and drive elements 15 and 16 of a gear device 34, which drives a shaft 13. The shaft 13 can be driven by the drive means 14 in both directions of rotation. Furthermore, the drive device 40 includes transmission elements 17a and 17b for transmitting motion from shaft 13 to the drive shafts 19a and 19b of wings 12a and 12b. Transmission elements 17a and 17b are shown schematically here only. They may consist of cooperating bevel gears from shaft 13 and the drive shafts 19a and 19b of wings 12a and 12b. Alternatively, for example, universal joints could be provided between shaft 13 and the drive shafts 19a and 19b. If the drive shafts 19a and 19b are aligned with shaft 13, i.e., not as shown in Figure 1a, the center axes m2 of the drive shafts 19a and 19b form an angle of 0°. <a<180° con respecto al eje central mi del eje 13, el eje 13 se puede utilizar pzLonn / cznz / q / Y directamente para accionar los ejes de accionamiento 19a y 19b. Es decir, se podrían omitir los elementos de transmisión 17a y 17b. Shaft 13 is rotatably connected to transmission elements 17a and 17b such that shaft 19a of wing 12a can be driven by transmission element 17a and shaft 19b of wing 12b can be driven by transmission element 17b. Shaft 13 always drives both wings 12a and 12b at the same time. Since wings 12a and 12b are constructed in principle in the same way, only wing 12b will be described below (see figure Ib). Base 11 serves as a bearing for shafts 19a and 19b. The base piece 21 of wing 12a is mounted on shaft 19b with the rotation axis a, allowing it to rotate in directions ul and u2 with respect to shaft 19b. According to Figure 1b, an end section of shaft 19b is provided with a gear 27 having teeth 29. Gear 27 is meshed with a toothed rail 28, which is fixed to the extension piece 22 of wing 12a. This forms a transmission 44 with gear 27 and toothed rail 28. In the present embodiment, the rotation axis a is also the drive axis 19b. This does not necessarily have to be the case. The drive can also be independent of the rotation axis. It is important to generate a torque around the rotation axis. The extension piece 22 rests on the base piece 21 so that it can move translationally with respect to the base piece 21 in directions pl and p2 between the base position and the extended position. The first guide means of the base piece interact with the second guide means of the extension piece and form a guide device 30 that ensures the movable assembly. A spring 23 loads the extension piece 22 relative to the base piece 21 with a spring force F applied to the initial position. The purpose of the spring 23 is to influence the course of the movements—namely, the pivoting and translational movements—of the wings 12a and 12b, so that these occur sequentially. Due to the spring 23, in this embodiment, when transitioning from the non-use position to the use position, the pivoting movement of the extension piece 21 occurs first, followed by the translational movement. The drive device can be alternatively designed to move the extension piece 22 with respect to the base piece 21. It is essential that the drive device be used simultaneously for the pivoting movement of the wing and the movement of the extension piece between the initial position and the extended position. pzLonn / cznz / q / Y According to an alternative embodiment to the embodiment shown in Figures 1a to 7, a friction drive would also be conceivable, for example, in which the toothed wheel 27 is replaced by a friction wheel and the toothed rail 28 is replaced by a friction track, with which the friction wheel is in contact. It is also conceivable, for example, to drive a spindle that is rotatably housed in the base piece 21 and meshes with a spindle nut of the extension piece. This embodiment of the present invention is described in more detail below. The base 11 has a stop 24 that forms the stop surfaces 25 and 26 (see, for example, Figure 1b). In the first pivoting position of the wing 12b according to Figures 1b to 3, a counter-surface 31 of the wing 12a, here the base piece 21, is in contact with the stop surface 25 and prevents further rotational movement in direction u2. A longitudinal central axis mF of the wing 12b is arranged approximately vertically. What is important in this case is not an exactly vertical arrangement, but an arrangement that does not restrict the lateral movement space of the seat occupant. When shaft 13 is driven in a first direction of rotation, drive shafts 19a and 19b are also driven. This results in gear 27 being driven in the direction of rotation ul, generating a torque MI about the axis of rotation a, on which the base piece 21 is mounted so that it can rotate freely. Figure 3 shows that a distance 1 is formed between a centerline mz of the teeth of the toothed rail 28 and the axis of rotation a. The force applied by gear 27 to the toothed rail 28 therefore causes a moment MI in the direction ul on the base piece 21. The spring force of spring 23 is strong enough so that there is no relative movement between the base piece 21 and the extension piece 22 before the pivoting motion from the first pivoting position to the second pivoting position is completed. In this position, the moment MI is greater than a moment M2, which is caused by the weight FG at the center of gravity 36 of wing 12b. Therefore, wing 12b pivots about the rotation axis a in the direction ul. As soon as wing 12b has pivoted a certain angle of rotation in the direction ul, the force of the weight FG supports the moment MI. The wing 12b pivots together with the base piece 21 and the extension piece 22 from a first pivot position in the ul direction until the opposite surface 31 of the wing 12b makes contact with the stop surface 26 (see figure 5). The wing 12b is then in the second pivot position. Further rotation in the ul direction is not possible. {'ZLQnn / eznz / q / Y In the second pivoting position, the force F1 caused by the moment MI on the gear 27 overcomes the retaining force Ffed of the spring 23, and the extension piece 22 moves relative to the base piece 21 in the pl direction. The gear 27 rolls on the toothed rail 28 until it reaches the position shown in Figure 7, which is defined by stops (not shown) on the base piece and the extension piece. The guide device 30 guides the movement of the extension 22 relative to the base 21. When the final position of the extension 22 is reached, as shown in Figure 7, the extension 22 is in the extended position. In the operating position as shown in Figure 7, the central axis mF of each wing 12a and 12b is tilted approximately 90° with respect to the initial position, and the base piece 21 is in the second tilting position. The extension piece 22 is in the extended position, and a free end section 32 of the extension piece 22 projects forward approximately horizontally, approximately in the xl direction. To move wing 12b from the engaged position to the disengaged position, shaft 13 is driven in a second direction of rotation u2, which is the opposite of the first direction of rotation. Gear 27 then moves in the rotational direction u2, with the spring force Ffed, which also acts in the p2 direction, supporting the movement of the extension piece 22. In this case, the balance of forces is such that the forces causing the translational movement are greater than the forces causing the rotational movement. The extension piece 22 moves from the position shown in Figure 7 with respect to the base piece 21 in the p2 direction until the extension piece 22 has reached the position shown in the figure. The initial position of the extension piece 22 with respect to the base piece 21 according to figure 5 is fixed by unrepresented stops of the base piece 21 and the extension piece 22. If the gear 27 is driven in direction u2, the wing 12b rotates in direction u2 until it reaches the non-use position as shown in Figure 3. This is defined by the contact between the stop surface 25 and the counter-surface 31. In the non-use position, the central axis mF of the wing 12b is arranged approximately in a vertical orientation. Figures 8 and 9 show a second embodiment of the present invention. The movement of the base piece 21 and the extension piece 22 takes place according to the first embodiment of the present invention. The structure of the wing 12b is also the same, except for the transmission 44, which is replaced by a transmission 44'. Instead of the gear 27, a bevel gear 43 is formed, which is driven by the shaft 19b and meshes with a bevel gear 38, which is attached to a torque-proof spindle 39. The spindle 39 is mounted in a rotatable manner on the base piece 21. A spindle nut 42, which is firmly attached to the extension piece 22, meshes with a thread 41 of the spindle 39. When the bevel gear 38 is driven by means of shaft 19b, a torque MI is generated about the axis of rotation a in the ul direction, which is the cause of the wing 12b pivoting in the ul direction. Due to the power ratio between the gearing components, which can be modified, for example, by adjusting the gear pitch of the spindle, the sequence of the pivoting and translational movements can be influenced. In this case, the pivoting operation of the wing 12b from the first pivoting position to the second pivoting position occurs, for example, before the movement of the extension component 22 between the initial and extended positions. To achieve this, for example, the thread pitch of the threaded spindle can be designed to provide adequate resistance to the translational movement of the extension component before the rotational movement of the base component. Alternatively, the spring 23 (not shown in Figures 8 and 9) can be configured as in the first embodiment and can load the extension component 22 in the initial position.To move wing 12b to the non-use position, the drive shaft 19b is moved in the opposite direction u2. Otherwise, the headrest 10 and wing 12b are implemented as in the first embodiment. {'ZLonn / eznz / q / Y In a variant of the second embodiment of the present invention presented above, the bevel gear 38 is torsionally connected to the spindle nut 38, which is rotatably mounted on the base piece 21. The shaft 39' is firmly connected to the extension piece 22. Similarly, when the spindle nut 38 is driven in the ul direction, a torsional force MI is generated in the ul direction.

Claims

1. Equipment (10) for a vehicle comprising a wing device comprising at least one wing (12a, 12b), wherein the wing (12a, 12b) is pivotally mounted about a rotation axis (a) between a first pivot position and a second pivot position, and wherein the wing (12a, 12b) comprises a base piece (21) and an extension piece (22), which is mounted so that it can move translationally with respect to the base piece (21) between a base position and an extended position, with a regulating device comprising at least one motorized drive (14) and a transmission (44, 44') for performing the pivoting and translational movement of the wing (12a, 12b), characterized in that the transmission (44, 44') converts a rotational movement of the drive (14) into a translational movement of the extension piece (22), wherein the base piece (21) produces or generates a torsional stress (MI, M2) around the axis of rotation (a),Therefore, the wing (12a, 12b) is pivotable between the first pivot position and the second pivot position.

2. The equipment according to claim 1, characterized in that the base piece (21) is pivotally mounted on the base (11).

3. The equipment according to claims 1 or 2, characterized in that the base piece (21) with a rotation axis (a) forms a pivot joint.

4. The equipment according to any of the preceding claims, characterized in that the rotation axis (a) is at the same time the drive axis (19a, 19b) of the drive device (40).

5. The equipment in accordance with any of the preceding claims, characterized in that the driving force (El) acts on the extension piece at a distance from the axis of rotation (a).

6. The equipment according to any of the preceding claims, characterized in that the transmission (44) comprises a gear train with a toothed wheel (27) that interacts with a toothed rail (28).

7. The equipment according to any of the preceding claims, characterized in that the transmission (44) comprises a spindle transmission with a spindle (39) and a spindle nut (42). pzLonn / cznz / q / Y 8. The equipment according to any of the preceding claims, characterized in that the transmission (44) forms a chain drive, a toothed belt drive, or a belt drive, the transmission being driven in such a way as to generate a torsional force in the base piece (21). {'ZLonn / eznz / q / Y 9. The equipment according to any of the preceding claims, characterized in that in the first pivoting position, a force that prevents relative movement between the base piece (21) and the extension piece (22) is greater than the driving force (Fl) to drive the translational movement.

10. The equipment according to any of the preceding claims, characterized in that a spring (23) keeps the base piece (21) and the extension piece (22) in the initial position.

11. The equipment according to any of the preceding claims, characterized in that the base piece (21) has first guide means and the extension piece (22) has second guide means for the movable mounting of the extension piece (22) on the base piece (21).

12. The equipment according to any of the preceding claims, characterized in that the base (11) has at least one stop surface (25, 26) that cooperates with a counter-surface (31) of the wing (12a, 12b), wherein in the non-use position and / or in the use position, the support surface (25, 26) and the counter-surface (25, 26) are in contact.

13. The equipment according to any of the preceding claims, characterized in that the wing device comprises two wings (12a, 12b).

14. The equipment according to any of the preceding claims, characterized in that the wing (12a, 12b) has a speaker device (35) with at least one speaker, the speaker being connectable to a vehicle audio system.

15. An equipment component in the form of a headrest or an armrest, its base being formed by a headrest (33) or by a seat backrest {'ZLQnn / eznz / q / Y of a vehicle.

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