DE102021100008A1 - Vehicle seat for a vehicle, in particular a motor vehicle - Google Patents

Abstract

The invention relates to a vehicle seat (1) with manual adjustment, which has: a seat part (2) with a seat part structure, a backrest (3) attached to the seat part (2) in a rear area, a panel holder attached to the seat part structure (10), a side cover (12) attached to the cover holder (10), in particular clipped in, for covering the side of the seat part (2), at least one adjusting device (6; 8) for adjusting or unlocking the seat part (2) and/or the backrest (3), an actuating shaft (18, 20) to be pivoted by the seat occupant via an operating lever (18b, 20b) for manual activation of the at least one adjusting device (6; 8), the actuating shaft (18, 20) being attached to the panel holder (10) is mounted, the operating lever (18b, 20b) and the actuating shaft (18, 20) being arranged further forward in relation to the adjusting device (6, 8).

Description

The invention relates to a vehicle seat for a vehicle, in particular a motor vehicle.

Vehicle seats with a seat part and an adjustable backrest generally have a seat height adjustment and a backrest lock. The height of the seat part can be adjusted by adjusting the seat height, e.g. using a height-adjustable pump. The backrest is generally pivotally mounted and locked to the seat portion; the backrest lock is z. B. a release lever can be unlocked, so that the user can then adjust the backrest, e.g. against a spring preload.

The seat height adjustment is provided, for example, in a central or rear area of the seat part; the release lever of the backrest angle adjustment is arranged on or in the area of the pivot axis of the backrest on the seat part. The user thus actuates the appropriate control levers for these adjustments, generally by reaching backwards from the seat.

The operating shafts of the reclining adjustment and the seat height adjustment, which are pivoted by the user, are generally supported on the seat structure. Furthermore, a side cover made of a plastic material is generally provided on the seat part, e.g. B. is attached to the seat structure.

To increase the ease of use, designs are known in which the operating levers to be operated by the driver are offset relative to the adjustments, i.e. the backrest release and the seat height adjustment, so that the driver can operate the levers more easily and does not have to reach back accordingly. However, such additional configurations, operating levers and corresponding transmission means from the operating levers to the backrest release and seat height adjustment are generally complex and must be attached with additional fastening means. Furthermore, a weakening of the seat structure is possibly caused by the formation of the additional operating lever and the waves and the required storage if this z. B. bearing eyes are formed in the structural parts.

the DE102008010372B3 describes a vehicle seat with an operating system with at least one operating element for controlling or actuating at least one adjustable component of the vehicle seat. The operating system includes a base panel arranged on one side of the vehicle seat, which has a standardized receptacle for a standardized functional element, in which at least one of the operating elements is installed. The receptacle is formed by an opening in the base panel, into which the functional panel can be inserted, with the at least one operating element being in operative connection with at least one device for activating at least one adjustment device for the at least one component of the vehicle seat when the functional panel is in the inserted state.

In the WO 2013/085903 A1 a release mechanism is shown which generates a force acting on a cable to operate an adjustment mechanism or the like in a seat. The release mechanism includes a rotor, a housing, a spring, and a cover overlying the housing. The spring creates a torque that allows the rotor to form a temporary subassembly with the housing prior to final assembly. The spring also biases the rotor axially into engagement with the cover to prevent rattling.

the JP2016022905 A shows a vehicle seat including a seat cushion frame that forms a skeleton of a seat part, a lifter that moves the seat cushion frame up and down, and a side cover that covers the seat cushion frame and the lifter on the outside. A control lever and a brake device, which serve as components of the height adjustment device, are arranged separately from each other. A lever shaft is passed through the side cover.

the JP2018130154A describes a seat device with a backrest adjustment, which allows additional seats to be covered on the sides with little installation space and low costs. The backrest can be freely reclined rearwardly with a plurality of seats next to each other being separated by partitions disposed at an upper end of the adjacent side surfaces of adjacent seats.

The invention is based on the object of designing a vehicle seat that enables a safe design and a high degree of design freedom with simple assembly and relatively little effort.

This object is achieved by a vehicle seat according to claim 1. The dependent claims describe preferred developments.

Thus, according to the invention, a panel holder is provided, which is preferably made of a plastic or of a metal and is attached to the seat structure. On the one hand, the panel holder allows the side cover to be accommodated made of plastic, the z. B. can be clipped or hung in the panel holder and is therefore easy to assemble. Furthermore, the panel holder enables the actuating shafts to be accommodated directly, in particular by integrating bearing bushes for the actuating shafts.

The at least one operating lever and the at least one actuating shaft are arranged further forward than the adjustment device activated thereby, i.e. backrest release or seat height adjustment. The directions “front” and “back” relate here to the direction of the seat, in which the backrest is therefore arranged at the rear area of the seat part and the seat occupant looks forward. In the predominantly intended arrangement of a vehicle seat with a forward orientation, the front direction thus corresponds to the longitudinal direction of the vehicle.

According to the invention, the adjusting device can serve to adjust the seat height and/or to unlock the backrest.
The adjusting device for adjusting the seat height can in particular enable an active adjustment in both directions, ie up and down. It can, for example, be in the form of a height-adjustable pump, in particular based on the principle of a ratchet mechanism, for example operated via a hand lever.

The adjustment device for unlocking the backrest can in particular be formed by an unlocking device for unlocking the backrest lock, so that the seat occupant can adjust the backrest, for example, against a spring preload or also fold it.

According to the invention, a high degree of design freedom is made possible when positioning the control levers to be operated by the driver. The operating levers can be arranged at suitable positions further forward on the vehicle seat and can be operatively connected to the adjusting devices by simple transmission means.

In particular, the screen holder can be made of a plastic, resulting in advantages in terms of costs, weight and freedom of design. Thus, a versatile functionality can be achieved through the relatively simple design of the panel holder. The panel holder can be attached to a suitable position of the seat structure, in particular further forward on the seat part.

Alternatively, the panel holder can also be made of metal, e.g. B. cast or pressed.

In particular, this also ensures that the seat structure of the seat part is not weakened by the additional connections or formations of bearing bushes or bushings for the actuating shafts. The operating shafts can be accommodated directly in the appropriate bushings of the panel holder, with sufficient strength and stability.

In particular, both adjusting devices, i.e. the seat height adjustment and backrest release, can be arranged further back and the two operating levers and actuating shafts can be arranged further forward on the panel holder, with their positions being relatively freely selectable.

The actuating shafts or actuating levers attached to the actuating shafts can be coupled via suitable transmission means as active connections to the adjusting devices arranged further back. In particular, a Bowden cable can be routed backwards from the actuating lever to the release lever of the backrest release as a means of transmission for the release of the backrest. The Bowden cable is advantageously guided in a Bowden cable sheath which is attached at its front end directly to the panel holder, e.g. B. a receiving tab, supported, in particular can be hung. Thus, a fixed mount and simple connection, with little effort and few resources, for the front connection of the Bowden cable casing is possible.

The actuating lever for the seat height adjustment is advantageously connected to the seat height adjustment via a train and pressure-transmitting transmission means, in particular a connecting rod, which in turn z. B. may include a height adjustment pump. In this case, a favorable guidance can be ensured by a direct, simple connecting rod.

According to the invention, a prefabricated structural unit or a sub-assembly is created in particular, which can be fully or partially prefabricated and attached to the seat structure in the vehicle seat. This enables quick and inexpensive assembly. During assembly, the panel holder can be screwed to the seat structure with its angled fastening straps, for example, and is used, for example, to clip the side cover directly on, or the side cover can already be clipped on. In particular, the levers, shafts and possibly transmission means can already be attached to the panel holder, so that after the panel holder has been installed, these means can be laid directly and connected to the seat structure or the backrest release.

In an embodiment of the panel holder made of plastic, some or all of the bushings of the actuating shafts can advantageously directly into a Production of the panel holder used injection molding tool inserted and encapsulated by the plastic. This enables an inexpensive, quick and safe training.

The screen holder thus serves as a versatile, functional means that can be formed cost-effectively with relatively little outlay on materials and allows for a high level of rigidity. He can e.g. B. be formed by reinforcing ribs and possibly a folded edge stiff and relatively low mass and little material.

• 1 eine Seitenansicht eines Sitzteils eines Fahrzeugsitzes gemäß einer Ausführungsform der Erfindung, mit den wesentlichen Elementen;
• 2 die Ausbildung aus 1 ohne Seitenabdeckung;
• 3 eine Aufsicht auf die Anordnung aus 2;
• 4 eine linke Seitenansicht der Anordnung aus 2, 3;
• 5 eine isometrische bzw. perspektivische Ansicht des Blendenträgers;
• 6 eine Seitenansicht des Blendenträgers;
• 7 eine vergrößerte Darstellung des Bereichs der Einhängung des Bowdenzugs der Lehnentriegelung an dem Blendenhalter und der Betätigungswelle.

The invention is explained in more detail below with reference to the accompanying drawings of an embodiment. Show it:

• 1 a side view of a seat part of a vehicle seat according to an embodiment of the invention, with the essential elements;
• 2 the training out 1 without side cover;
• 3 an oversight of the arrangement 2 ;
• 4 a left side view of the arrangement 2 , 3 ;
• 5 an isometric or perspective view of the panel carrier;
• 6 a side view of the panel carrier;
• 7 An enlarged view of the area where the Bowden cable of the backrest release is attached to the panel holder and the actuating shaft.

A vehicle seat 1 for a motor vehicle has according to 1 a seat part 2 on which a backrest 3 is pivotably mounted and locked in a backrest lock. The backrest lock can be unlocked via a release lever 9 of a backrest release 8 for the subsequent inclination adjustment of the backrest 3. The seat part 2 and thus the entire vehicle seat 1 can be adjusted in height via a seat height adjustment 7. The seat height adjustment 7 can in particular be formed by a height adjustment pump, in particular according to the principle of a ratchet gear, for example with a hand lever; in the views shown here, an adjustment lever 6a of the seat height adjustment 7 is shown.

The seat part 2 has a metal seat structure (not shown here), a panel holder 10 designed as a carrier plate and a side cover 12 made of plastic. The panel holder 10 is attached to the seat structure by means of fastening tabs 14, which can protrude in particular in the lateral direction, in particular screwed on, so that the panel holder 10 enables a fixed connection of the side cover 12 and the operating levers and operating shafts described below without damaging the metal seat structure as a result weaken or impair.

The screen holder 10 advantageously has stiffening ribs 15 and an edge 16 serving for stiffening and connection. The side cover 12 made of plastic is according to 1 on the panel holder 10 z. B. clipped or hung on mounting brackets 17, whereby a simple and secure attachment is made possible.

An actuating shaft 18 for unlocking the backrest is mounted in a bearing bush 19 in the panel support 10 , which is designed as part of the panel holder 10 or in one piece with the panel holder 10 or integrated into the panel holder 10 . The actuating shaft 18 is passed through the bearing bush 19, with one side, ie the in 1 , 2 visible side, an operating lever 18a is connected to the operating shaft 18 and on the other side an operating lever 18b to be gifted by the user is attached. A Bowden cable 24 is suspended on the actuating lever 18a. The mount is in 7 shown in more detail: The Bowden cable 24 or the cable is connected to the actuating lever 18a and is thus pulled when the actuating shaft 18 pivots. The Bowden cable casing (Bowden cable casing) 25, in which the Bowden cable 24 is guided, is at its front end on the panel holder 10, in particular according to FIG 7 supported on a mounting bracket 26 provided for this purpose on the panel holder 10; at the other end of the Bowden cable jacket 25 z. B. a structural part or on the side cover 12 can be attached. When the operating lever 18b is actuated, the Bowden cable 24 is pulled and the unlocking lever 9 provided at the other end is pivoted to unlock the backrest lock

Furthermore, an actuating shaft 20 of the seat height adjustment 7 is mounted in a bearing bush (bearing tube) 21, which is designed accordingly as part of the panel holder 10 or in one piece or integrated with it.

On the actuating shaft 20 of the seat height adjustment 7 from the in 1 , 2 side shown an actuating lever 20a fastened, which is connected via a connecting rod 22 to the adjusting lever 6a of the adjustment shaft 6 of the seat height adjustment 7. An operating lever 20b to be actuated by the seat occupant is attached to the other side. The connecting rod 22 allows the transmission of tensile and shear forces, so the height adjustment pump connected to the adjustment shaft 6 can be actuated in both directions.

Thus, the operating lever 18b to be actuated by the driver with the operating shaft 18 pushed through and the operating lever 18a for the backrest release as well as the operating lever 20b to be operated by the driver with the operating shaft 20 pushed through and the operating lever 20a for the seat height adjustment 7 can be positioned opposite the adjustment shaft 6 for the seat height adjustment 7 and the unlocking lever 9 of the backrest release can be adjusted forwards in the longitudinal direction. The panel holder 10 is used to form the bearing bushes 19, 21, to attach it to the seat structure and to hold the side cover 12.

The panel holder 10 can in particular be made of plastic, with some or all of the bearing bushes 19, 21 of the actuating shafts 18, 20 advantageously being inserted directly into an injection molding tool used to produce the panel holder and encapsulated by the plastic.

For assembly, the actuating shafts 18, 20 with bearings can first be placed in the bearing bushes 19, 21, and then the panel holder 10 can be attached to structural parts of the seat part 2. Furthermore, the Bowden cable jacket 25 and Bowden cable 24 and the connecting rod 22 can already be attached. Thus, the formation of a sub-assembly or a prefabricated unit is possible, which is subsequently assembled. As an alternative to this, the panel holder 10 can also first be attached to the structural parts of the seat part 2 and then the actuating shafts 18, 20 can be inserted into the bearing bushes 19, 21.

The design of the screen holder 10 can be adapted to the respective installation situation, the planned positioning of the elements and the required forces or dimensions. Due to the reinforcing ribs 15 and the edge 16, the panel holder 10 can be made stiff, inexpensive and with little material expenditure. For the bearings of the actuating shafts 18, 20, the bearing bushes (bearing eyes) 19, 21 are provided as through holes in the panel holder 10, preferably integrated into the panel holder, e.g. injected, so that the shafts can be inserted and guided through.

Reference List

1

vehicle seat

2

seat part

3

backrest

6

Seat height adjustment shaft 7

6a

Seat height adjustment lever 7

7

Seat height adjustment, e.g. with a height adjustment pump

8th

Backrest release of the backrest lock

9

release lever

10

bezel holder

12

Plastic side cover

14

mounting tabs

15

stiffening ribs

16

edge

17

Side cover mounting tab 12

18

Operating shaft for the backrest release

18a

Actuating lever for the backrest release

18b

Backrest release control lever to be pivoted by the seat occupant

19

Bearing, bearing tube for the actuating shaft 18

20

Actuating shaft for seat height adjustment 7

20a

Seat height adjustment lever

20b

Seat height adjustment lever 7, to be actuated by the seat occupant

21

Bearing of the actuating shaft 20

22

connecting rod

24

bowden cable

25

bowden cable sheath

26

Mounting bracket for the Bowden cable jacket 25

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102008010372 B3 [0006]
• WO 2013/085903 A1 [0007]
• JP 2016022905 A [0008]
• JP 2018130154 A [0009]

Claims (13)

Vehicle seat (1) with manual adjustment, the vehicle seat (1) having: a seat part (2) with a seat part structure, a backrest (3) attached in a rear area to the seat part (2), a panel retainer (10) attached to the seat portion structure, a side cover (12) attached to the cover holder (10) for covering the side of the seat part (2), at least one adjusting device (7; 8) for adjusting the seat part (2) and/or unlocking the backrest (3), at least one actuating shaft (18, 20) to be pivoted by the seat occupant via an operating lever (18b, 20b) for manual activation of the adjusting device (7; 8), wherein the actuating shaft (18, 20) is mounted on the panel holder (10), wherein the operating lever (18b, 20b) and the actuating shaft (18, 20) are arranged further forward in relation to the adjusting device (7; 8). Vehicle seat (1) after claim 1 , characterized in that a bearing bush (19, 21) of the at least one actuating shaft (18, 20) is formed in one piece with the panel holder (10) or is accommodated in the panel holder (10). Vehicle seat (1) after claim 2 , characterized in that the panel holder (10) with the side cover (12), the operating lever (18b, 20b) and the operating shaft (18, 20) accommodated in the bearing bush (19, 21) form a prefabricated unit for mounting on the seat part (2). Vehicle seat (1) according to one of the preceding claims, characterized in that the adjusting device is a backrest release (8) for unlocking a backrest lock, in particular for adjusting the inclination of the backrest (3). Vehicle seat (1) after claim 4 , characterized in that an actuating lever (18a) is provided on the actuating shaft (18) of the backrest release (8), to which a Bowden cable (24) is attached, which actuates the release lever (9), the Bowden cable (24) in one Bowden cable jacket (25) is guided, which is supported at its front end on the panel holder (10), preferably a receiving tab (26) of the panel holder (10). Vehicle seat (1) according to one of the preceding claims, characterized in that the adjusting device (7) is a seat height adjuster (7) for adjusting the height of the seat part (2), e.g. with a height-adjustable pump, in particular according to the principle of a ratchet gear, e.g. with a hand lever. Vehicle seat (1) after claim 6 , characterized in that an actuating lever (20a) is attached to the actuating shaft (20) of the seat height adjustment (7) and is connected to the seat height adjustment (7), in particular an adjusting lever, via a push-pull means, in particular a connecting rod (22). (6a) of the seat height adjustment (7) is connected. Vehicle seat (1) after claim 5 or 7 , characterized in that the actuating shaft (18, 20) of the adjusting device (7, 8) is pushed through a bearing bush (19, 21) and on one side with the relevant actuating lever (18a, 20a) for coupling to the adjusting device (7, 8) and on the other side with the relevant operating lever (18, 20) for the seat occupant. Vehicle seat (1) according to one of the preceding claims, characterized in that the side cover (12) is made of plastic. Vehicle seat (1) according to one of the preceding claims, characterized in that the side cover (12) is plugged in and/or clipped and/or snapped into the panel holder (10). Vehicle seat (1) according to one of the preceding claims, characterized in that the cover holder (10) is made of a plastic, in particular with bearing bushes (19, 21) integrated into the plastic material of the cover holder (10), in particular overmoulded. Vehicle seat (1) according to one of the preceding claims, characterized in that the panel holder (10) has a folded edge (16) and/or reinforcing ribs (15) to increase rigidity. Method for producing a vehicle seat (1) according to one of the preceding claims, with the following steps in this or a changed order: providing a panel holder (10) with at least one bearing bush (19, 21) and with fastening means (14) for fastening to a seat structure , inserting at least one actuating shaft (18, 20) with an actuating lever (18a, 20a) into the at least one bearing bush (19, 21), attaching the panel holder (10) to the seat structure, attaching at least one transmission means (24, 25, 22) between the actuating lever (18a, 20a) and an adjusting device (7, 8) for adjusting the seat height and/or unlocking the backrest, the panel holder (10) being longitudinally forward relative to the at least one adjusting device (7, 8). is attached to the seat structure in an offset manner and the at least one transmission means is routed rearwardly from the panel holder (10), attaching a side cover (12) to the panel holder (10)

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