VEHICLE SEAT WITH ONE SEAT PART, ONE BACKREST AND ONE CALF SUPPORT

Abstract

The invention relates to a vehicle seat (100) comprising at least one seat part (102), a backrest (104) and a calf support (120), wherein at least one frame part (320) of the backrest (104) and one frame part (330) of the calf support (120) are designed as identical parts (COP).

Description

[0001] The invention relates to a vehicle seat with a seat part, a backrest and a calf support. State of the art

[0002] Vehicle seats with tilt-adjustable calf and / or foot rests are known from the state of the art. Task

[0003] The invention is based on the object of improving a vehicle seat of the type mentioned at the outset, in particular of providing a cost-reduced vehicle seat. Solution

[0004] This object is achieved according to the invention by a vehicle seat comprising at least one seat part, a backrest and a calf support, wherein at least one frame part of the backrest and one frame part of the calf support are designed as identical parts.

[0005] Identical parts, also called carry-over parts, are components that can be used largely unchanged in different products.

[0006] Because the calf support and backrest, especially their frame components, are identical, meaning they are constructed from identical parts, development costs, development times, production costs, and inventory costs can be reduced. Furthermore, the use of identical parts can simplify assembly. The identical parts concept eliminates the need for tooling.

[0007] Advantageous embodiments, which can be used individually or in combination with one another, are the subject of the subclaims.

[0008] The backrest may comprise a lower frame part and an upper frame part arranged on the lower frame part, wherein the upper frame part of the backrest and the frame part of the calf support may be designed as identical parts.

[0009] The upper frame part of the backrest and the frame part of the calf support, i.e. the frame parts of the vehicle seat designed as identical parts, can each comprise two side frame parts and a transverse frame part connecting the side frame parts. The upper frame part of the backrest can be substantially U-shaped. The frame part of the calf support can be substantially U-shaped.

[0010] The width of a backrest, for example, in the lumbar and / or shoulder areas, can correspond to the width of a seat part. This makes the use of at least one frame part of the backrest as a frame part for a calf support particularly suitable. The calf support can be pivotably arranged in the area of ​​a front seat part and have a width corresponding to the width of the seat part.

[0011] The lower frame part of the backrest can be arranged so that it can be adjusted via a first tilt adjuster on the seat part and / or on a seat support structure. The lower frame part can form a lower partial backrest. The lower frame part can be formed from at least two side frame parts.

[0012] The upper frame part of the backrest can be adjusted via a second tilt adjuster on the lower frame part. The upper frame part can form an upper partial backrest.

[0013] The frame part of the calf support can be arranged so that it can be adjusted via a third tilt adjuster on the seat part and / or on the seat support structure. The frame part of the calf support can form a leg and / or footrest. The calf support can be arranged in a front area of ​​the seat part.

[0014] Because the upper part of the backrest can be pivoted towards the lower part of the backrest and the lower part of the backrest can be pivoted towards the seat part, such a vehicle seat can be used as a multifunctional element. By folding the upper part of the backrest relative to the lower part of the backrest and by pivoting the lower part of the backrest relative to the seat part, a desired back comfort position, for example the desired shoulder comfort position and lumbar comfort position, can be set. By pivoting the calf support, driver comfort can be further increased. Optionally, in addition or alternatively, the upper part of the backrest can form a storage area and / or a table for a user by folding it relative to the seat part, whereby a surface of the upper part of the backrest facing away from the seat part forms a storage area and / or table surface when fully folded towards the seat part.The vehicle seat can be used multifunctionally. The vehicle seat can be a commercial vehicle seat, for example, a passenger seat located in the cab of a commercial vehicle. A commercial vehicle, also known as a commercial vehicle, can be intended for the transport of people and / or goods.

[0015] The seat part and the backrest can each be attached to the seat support structure. The seat support structure can, for example, be a base part that connects the seat, i.e. the seat part and the backrest, to a vehicle floor. The backrest and seat part can each be adjustable about a horizontal pivot axis and arranged on the seat support structure. The seat support structure can, for example, be a frame structure that can be connected to a vehicle floor and / or a longitudinal adjustment device. Alternatively, the backrest can be pivotably arranged directly on the seat part. The seat part can be connected to the longitudinal adjustment device.

[0016] At least the tilt adjuster of the calf support and one of the tilt adjusters of the backrest can be formed from identical parts. For example, all three tilt adjusters can be formed from identical parts. For example, the second tilt adjuster of the backrest and the tilt adjuster of the calf support can be formed from identical parts. For example, alternatively or optionally, the first tilt adjuster of the backrest and the tilt adjuster of the calf support can additionally be formed from identical parts.

[0017] Because the tilt adjusters are also made of identical parts, additional development costs, development times, production costs, and inventory costs can be reduced. Furthermore, the use of identical parts can simplify assembly.

[0018] At least the second inclination adjuster and / or the third inclination adjuster can each comprise fittings which can be arranged or are arranged on both sides of each side of the backrest or the calf support, each fitting comprising a first fitting part and a second fitting part.

[0019] At least one of the fittings can comprise a locking mechanism and an actuating element for unlocking the locking mechanism. Upon actuation of the actuating element, the locking mechanism, which holds the calf support locked in a normal position and other adjustment positions, can be unlocked. The calf support can then be folded up or down relative to the seat part.

[0020] At least one of the fittings can comprise a spring mechanism with a pivot bearing and a spring element to support an adjustment movement of the calf support. An adjustment movement of the calf support can be supported, for example, by the spring element. An adjustment movement can be performed manually, for example, by pressing.

[0021] The calf support can be designed to be manually adjustable in steps. The spring element can be configured to support manual adjustment, for example, upwards relative to the seat part.

[0022] The calf support can be adjusted in steps by a predetermined angle of at least 1°. The inclination adjuster can be configured to allow an adjustment, for example, a lifting, of the calf support in steps by a predetermined angle. The inclination adjuster can be configured to allow an adjustment of the calf support in steps by an angle of at least 1°, for example, 2°.

[0023] The upper frame part can, for example, be provided with a belt integration. The vehicle seat can be designed as an integral belt seat. A surface of the upper frame part facing away from the seat part, i.e., a rear side, can be designed as a storage area. Because the upper frame section comprises at least one safety belt device, the vehicle seat can be used as such with an integrated safety system and as a functional element, for example, as a storage area and / or table. Figures and embodiments of the invention

[0024] The invention is explained in more detail below with reference to advantageous embodiments illustrated in the figures. However, the invention is not limited to these embodiments. They show: Fig. 1: a schematic representation of a vehicle seat with a longitudinal adjustment device according to the prior art, Fig. 2: schematically a side view of a vehicle seat according to the invention, comprising at least one seat part, a backrest and a calf support, Fig. 3: schematically a perspective view of the vehicle seat according to the invention according to Fig. 2, Fig. 4: schematically a perspective view of a frame part according to the invention for a backrest and / or for a calf support with at least one inclination adjuster in a first position, and Fig. 5: schematically a perspective view of the frame part according to the invention according to Fig. 4 in a second position.

[0025] Corresponding parts are provided with the same reference numerals in all figures.

[0026] One in the Fig. 1, a vehicle seat 100 schematically illustrated according to the prior art is described below using three spatial directions running perpendicular to one another. In a vehicle seat 100 installed in the vehicle, a longitudinal direction x runs largely horizontally and preferably parallel to a vehicle longitudinal direction that corresponds to the usual direction of travel of the vehicle. A transverse direction y running perpendicular to the longitudinal direction x is also oriented horizontally in the vehicle and runs parallel to a vehicle transverse direction. A vertical direction z runs perpendicular to the longitudinal direction x and perpendicular to the transverse direction y. In a vehicle seat 100 installed in the vehicle, the vertical direction z preferably runs parallel to a vehicle vertical axis.

[0027] The position and direction information used, such as front, rear, top, and bottom, refer to a viewing direction of an occupant sitting in the vehicle seat 100 in a normal seating position, wherein the vehicle seat 100 is installed in the vehicle, in a position of use suitable for passenger transport with the backrest 104 upright and oriented in the direction of travel as usual. However, the vehicle seat 100 can also be installed or moved in a different orientation, for example, transversely to the direction of travel. Unless otherwise described, the vehicle seat 100 is constructed mirror-symmetrically to a plane running perpendicular to the transverse direction y.

[0028] The backrest 104 can be pivotably mounted on a seat part 102 of the vehicle seat 100. For this purpose, the vehicle seat 100 can optionally comprise a fitting 106, in particular an adjustment fitting, rotary fitting, locking fitting, or wobble fitting.

[0029] The position and direction specifications used, such as radial, axial, and circumferential, refer to a rotational axis 108 of the fitting 106. Radial means perpendicular to the rotational axis 108. Axial means in the direction of or parallel to the rotational axis 108.

[0030] The vehicle seat 100 can optionally include a longitudinal adjustment device 110. The longitudinal adjustment device 110 includes, for example, a rail arrangement 112 with a first rail element 114 and a second rail element 116. The first rail element 114 is adjustable in the longitudinal direction x relative to the second rail element 116. The first rail element 114 is attached to the seat part 102. The second rail element 116 is attached to a structural element of a vehicle, for example, a vehicle floor.

[0031] For clarity, the first rail element 114 is referred to as the upper rail 114 in the following description. This upper rail 114 (also called a running rail or carriage) is assigned to the vehicle seat 100 and is configured to support this vehicle seat 100. The second rail element 116 is referred to below as the lower rail 116. The lower rail 116 is fixed and connected, for example, to the floor of a vehicle.

[0032] Fig. 2 schematically shows a side view of a vehicle seat 100 according to the invention, comprising at least one seat part 102, a backrest 104 and a calf support 120.

[0033] The vehicle seat 100 may comprise at least one seat support structure 200. The seat support structure 200 may be configured as a base part and / or seat substructure and connect the vehicle seat 100 to a vehicle floor and / or to the longitudinal adjustment device 110.

[0034] The seat part 102 may include at least one seat shell 1022. The seat shell 1022 may rest on an upper side of the seat support structure 200.

[0035] The backrest 104 can be pivotably mounted on the seat support structure 200. A so-called Seat Reference Point (SRP) for a passenger seat can be variably adjusted.

[0036] The backrest 104 may comprise a frame structure 300, in particular a backrest frame structure. The frame structure 300 may comprise a lower frame part 310. The lower frame part 310 may be pivotally mounted on the seat part 102 and / or on the seat support structure 200. The lower frame part 310 may comprise at least two side frame parts 312. The side frame parts 312 may be connected to one another via transverse elements, such as crossbars, and / or via a suspension system. The lower frame part 310 may be formed of metal.

[0037] The frame structure 300 may include an upper frame part 320 arranged on the lower frame part 310. The upper frame part 320 may be pivotally arranged on the lower frame part 310. The upper frame part 320 may include at least two side frame parts 322 and a transverse frame part 324 connecting the side frame parts 322. The upper frame part 320 may, for example, be formed in one piece or in multiple pieces. The upper frame part 320 may be formed of metal. The respective side frame part 322 of the upper frame part 320 may be connected to one of the side frame parts 312 of the lower frame part 310.

[0038] At least one of the frame parts 310, 320 of the backrest 104 and at least one frame part 330 of the calf support 120 can be designed as identical parts COP.

[0039] In particular, the upper frame part 320 of the backrest 104 and the frame part 330 of the calf support 120 can be designed as identical parts COP. The frame part 330 of the calf support 120 can comprise at least two side frame parts 332 and a transverse frame part 334 connecting the side frame parts 332. The frame part 330 can, for example, be formed as a single piece or in multiple pieces. The respective side frame part 332 of the calf support 120 can be connected to one side of the seat part 102 and / or the seat support structure 200.

[0040] Carry-over parts (COPs) are components that can be used largely unchanged in different products. In other words, the Calf Support 120 can consist of so-called carry-over backrest parts, especially shoulder rest parts.

[0041] The backrest 104 can be arranged in a normal position 510, in particular a sitting position, at a first angle to the seat part 102 and / or the seat support structure 200, wherein the upper frame part 320, i.e., an upper partial backrest, and the lower frame part 310, i.e., a lower partial backrest, together form a flat backrest surface. The normal position 510 can be an upright sitting position and, for example, a starting position in which the backrest 104 can be arranged slightly inclined relative to the seat part 102 and / or the seat support structure 200. In a non-use position 520 of the calf support 120, the latter can be arranged folded downward relative to the seat part 102 and / or the seat support structure 200. In the non-use position 520, the calf support 120 can, for example, be oriented substantially perpendicular to the seat part 102 and / or the vehicle floor.In a use position 530, the calf support 120 can be arranged pivoted upwards relative to the seat part 102 and / or the seat support structure 200.

[0042] The calf support 120 can, for example, be designed to be pivotable through a pivoting range of at least 60° to 90°, in particular 80°.

[0043] Fig. 3 schematically shows a perspective view of the vehicle seat 100 according to the invention according to Fig. 2.

[0044] The upper frame part 320 can be formed from at least one of a bent metal rod and / or a bent metal tube and / or a bent metal sheet. The upper frame part 320 can be substantially U-shaped.

[0045] The frame part 330 of the calf support 120 can be formed from metal. The frame part 330 of the calf support 120 can be formed from at least one bent metal rod and / or a bent metal tube and / or a bent metal sheet. The frame part 330 of the calf support 120 can be substantially U-shaped.

[0046] For example, at least the respective side frame parts 322, 332 of the frame parts 320, 330 and / or the respective cross frame part 324, 334 may be identical parts COP.

[0047] The lower frame part 310 of the backrest 104 can be adjustably arranged on the seat part 102 and / or on the seat support structure 200 via a first inclination adjuster 610. The upper frame part 320 of the backrest 104 can be adjustably arranged on the lower frame part 310 via a second inclination adjuster 620. The frame part 330 of the calf support 120 can be adjustably arranged on the seat part 102 and / or on the seat support structure 200 via a third inclination adjuster 630. The inclination adjusters 610 to 630 can be formed at least partially from identical COP parts. The inclination adjusters 610 to 630 and / or components of the inclination adjusters 610 to 630 can also be formed as identical COP parts.

[0048] At least the second inclination adjuster 620 and / or the third inclination adjuster 630 can each comprise fittings 710a, 710b, 720a, 720b which can be arranged or are arranged on both sides of each side of the backrest 104 or the calf support 120, each fitting having a first fitting part 712, 722 and a second fitting part 714, 724.

[0049] The fittings 710a, 710b, 720a, 720b and / or components of the fittings 710a, 710b, 720a, 720b can be identical COP parts. At least the fitting parts 712, 714, 722, 724 of the fittings 710a, 710b, 720a, 720b can be identical COP parts. The respective side frame parts 322, 332 of the backrest 104 and the calf support 120 can be provided with a first fitting part 712, 722. The respective side frame parts 322, 332 can each be connected to the first fitting part 712, 722 in a materially bonded, force-locked, and / or form-locked manner. The respective second fitting part 714, 724 can be fastened on the seat side and / or the seat support structure side.

[0050] In the normal position 510, the upper frame part 320 can be designed to be pivotable into a folding position 540 in the direction of the seat part 102 and / or into a comfort position in the direction away from the seat part 102, in each case relative to the lower frame part 310. A rear side of the upper frame part 320 can be used as a shelf and / or table in the folding position 540. After unlocking the upper frame part 320, it can be designed to be pivotable, for example, through a pivoting range or free pivoting range of at least 60° up to 85°, in particular of 80°. In the folding position 540 of the upper frame part 320, the lower frame part 310 can still be in its normal position 510.

[0051] The lower frame part 310 of the backrest 104 can be pivotable relative to the seat part 102 and / or the seat support structure 200 and, for example, can assume a comfortable position. Furthermore, the lower frame part 310 can be pivoted toward the seat part 102 and / or the seat support structure 200 until the upper frame part 320 is arranged in its folding position 540 substantially parallel to a horizontal axis. The adjustment of the lower frame part 310 can be performed stepwise, for example, in 2° increments.

[0052] Fig. 4 schematically shows a perspective view of a frame part 320, 330 according to the invention for a backrest 104 and / or for a calf support 120 with at least one inclination adjuster 620, 630 in a first position 550.

[0053] Due to the use of identical COP parts, the illustrated frame part 320, 330 can be used both to form a backrest 104 and to form a calf support 120. If the illustrated identical COP part is used as a frame part 320 for a backrest 104, the first position 550 represents the folding position 540. If the illustrated identical COP part is used as a frame part 330 for a calf support 120, the first position 550 represents the non-use position 520.

[0054] At least the tilt adjuster 630 of the calf support 120 and the tilt adjuster 620 of the upper frame part 320 of the backrest 104 can be formed from identical COP parts. Alternatively or optionally additionally, the tilt adjuster 630 of the calf support 120 and the tilt adjuster 610 of the lower frame part 310 of the backrest 104 can be formed from identical COP parts. Because at least two of the three tilt adjusters 610 to 630 installed in the vehicle seat 100 consist of identical COP parts, additional development costs, development times and production costs, production times, and storage costs can be reduced. Furthermore, the use of identical COP parts can simplify assembly.

[0055] Fig. 5 shows schematically a perspective view of the frame part 320, 330 according to the invention according to Fig. 4 in a second position 560.

[0056] If the illustrated identical part COP is used as a frame part 320 for a backrest 104, the second position 560 represents the normal position 510. If the illustrated identical part COP is used as a frame part 330 for a calf support 120, the second position 560 represents the usage position 530.

[0057] At least one of the fittings 710a, 710b, 720a, 720b may include a locking mechanism 730 and an actuating element 740 for unlocking the locking mechanism 730. Upon actuation of the actuating element 740, the locking mechanism 730 can be unlocked and the vehicle seat 100 can be adjusted. The actuating element 740 may be an actuating lever, an actuating tab, and / or an actuating loop.

[0058] At least one of the fittings 710a, 710b, 720a, 720b may comprise a suspension mechanism 750 with a pivot bearing 752 and a spring element 754 to support an adjustment movement.

[0059] At least the calf support 120 can be configured to be manually adjustable in steps. The spring element 754 can be configured to support the manual adjustment.

[0060] At least the calf support 120 can be adjusted in steps by a predetermined angle of at least 1°. At least the third inclination adjuster 630 can be configured to allow an adjustment, for example, a lifting, of the calf support 120 in steps by a predetermined angle. The third inclination adjuster 630 can be configured to allow an adjustment of the calf support 120 in steps by an angle of, for example, 2°. List of reference symbols 100 vehicle seats 102 Seat part 1022 seat shell 104 Backrest 106 Fittings 108 axis of rotation 110 Longitudinal adjustment device 112 Rail arrangement 114 First rail element (top rail) 116 Second rail element (bottom rail) 120 calf support 200 seat support structure 300 frame structure 310 Frame part, in particular lower frame part 312 side frame part 320 frame part, in particular upper frame part 322 side frame part 324 Cross frame part 330 frame part, especially the calf support 332 side frame part 334 Cross frame part 510 Normal position 520 Non-use position 530 Usage position 540 folding position 550 first position 560 second position 610 tilt adjuster, in particular first tilt adjuster 620 tilt adjuster, in particular second tilt adjuster 630 Tilt adjuster, in particular third tilt adjuster 710a, 710b fitting 720a, 720b fitting 712, 722 first fitting part 714, 724 second fitting part 730 locking mechanism 740 Actuator 750 suspension mechanism 752 pivot bearing 754 spring element COP common part x longitudinal direction y transverse direction z Vertical direction

Claims

[1] Vehicle seat (100), comprising at least one seat part (102), a backrest (104) and a calf support (120), characterized by that at least one frame part (320) of the backrest (104) and one frame part (330) of the calf support (120) are designed as identical parts (COP). [2] Vehicle seat (100) according to claim 1, characterized by that the backrest (104) comprises a lower frame part (310) and an upper frame part (320) arranged on the lower frame part (310), wherein the upper frame part (320) of the backrest (104) and the frame part (330) of the calf support (120) are designed as identical parts (COP). [3] Vehicle seat (100) according to claim 1 or 2, characterized by that the frame parts (320, 330) designed as identical parts (COP) each comprise at least two side frame parts (322, 332) and a transverse frame part (324, 334) connecting the side frame parts (322, 332). [4] Vehicle seat (100) according to claim 2 or 3, characterized by , that - the lower frame part (310) of the backrest (104) is arranged to be adjustable via a first inclination adjuster (610) on the seat part (102) and / or on a seat support structure (200), and / or - the upper frame part (320) of the backrest (104) is arranged to be adjustable via a second inclination adjuster (620) on the lower frame part (310), and / or - the frame part (330) of the calf support (120) is arranged to be adjustable via a third inclination adjuster (630) on the seat part (102) and / or on the seat support structure (200). [5] Vehicle seat (100) according to claim 4, characterized by that at least one of the inclination adjusters (610, 620) of the backrest (104) and the third inclination adjuster (630) of the calf support (120) are formed from identical parts (COP). [6] Vehicle seat (100) according to claim 4 or 5, characterized bythat at least the second inclination adjuster (620) and / or the third inclination adjuster (630) each comprise fittings (710a, 710b, 720a, 720b) ​​which can be arranged or are arranged on both sides of each side of the backrest (104) or the calf support (120), each fitting having a first fitting part (712, 722) and a second fitting part (714, 724). [7] Vehicle seat (100) according to claim 6, characterized by that at least one of the fittings (710a, 720a) comprises a locking mechanism (730) and an actuating element (740) for unlocking the locking mechanism (730). [8] Vehicle seat (100) according to claim 6 or 7, characterized by that at least one of the fittings (710b, 720b) ​​comprises a suspension mechanism (750) with a pivot bearing (752) and a spring element (754) for supporting an adjustment movement. [9] Vehicle seat (100) according to one of claims 1 to 8, characterized bythat at least the calf support (120) is designed to be manually adjustable in steps. [10] Vehicle seat (100) according to one of claims 1 to 9, characterized by that at least the calf support (120) can be adjusted step by step by a predetermined angle of at least 1°.

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