WO2015003854A1

WO2015003854A1 - Device for actuating a seat fitting for a vehicle seat

Info

Publication number: WO2015003854A1
Application number: PCT/EP2014/061479
Authority: WO
Inventors: Martin Stainer; Andreas Schug
Original assignee: Johnson Controls Gmbh
Priority date: 2013-07-11
Filing date: 2014-06-03
Publication date: 2015-01-15
Also published as: DE102013220085B3

Abstract

The invention relates to a device for actuating a seat fitting (2) for a vehicle seat (1), comprising an actuation element which is mechanically coupled to the seat fitting (2) by means of an actuation control (3). According to the invention, one end of the actuation control (3) is secured to the seat fitting (2) such that the end of the actuation control (3), when in the non-activated state, is always arranged on a rotational axis (RA2) of a back rest of the vehicle seat (1). The invention also relates to a vehicle seat (1) comprising said type of device.

Description

Device for actuating a seat fitting for a vehicle seat

description

The invention relates to a device for actuating a seat fitting for a vehicle seat with a mechanically coupled by means of a control cable with the seat fitting actuator. The invention further relates to a vehicle seat, comprising such a device.

From the prior art vehicle seats are known, the

Backrests for enlarging a loading space and / or for

Facilitating a boarding of vehicle occupants in the rear areas of the vehicle are hinged. To facilitate a release of

Backrests for executing the folding mechanism are arranged in the upper region of the backrest respectively actuators, which are coupled by means of a control cable with a seat fitting, a so-called computer. Upon actuation of the actuator, a lock is released within the computer, so that the folding mechanism of the backrest is released.

Also, vehicle seats with so-called easy-entry functions are known, which allow easier entry into a second or third row of seats of a vehicle. This is when the operation of the

Actuator of the vehicle seat moved on a rail assembly in the direction of travel to increase the boarding area, at the same time the backrest of the vehicle seat is folded forward. In this case, a pivoting range of the backrest is limited at triggered Easy-entry function. The designed as easy-entry fitting computer is in this case formed such that the backrest coming from a folded easy entry position automatically in their last set

Use position is lockable. From DE 10 2005 003 817 B4, a motor vehicle seat with a seat part and a backrest which can be locked by means of an unlocking mechanism in a tilt-locking adjustment mechanism is known. The

Backrest is pivotable about a fixed seat pivot axis via an easy-entry operating lever in an easy-entry position and a seat part fixed comfort / cargo control lever in a comfort or cargo position. Furthermore, an unlockable by the easy-entry operating lever and the comfort / cargo operating lever, pivotally mounted to the fixed seat pivot axis release lever is provided, which via a coaxial to the pivot axis extending unlocking shaft with an adjustable locking element of the tilting

Lock adjustment mechanism is in operative connection. The adjustable

Locking element can be locked with a seat part fixed locking element of the tilt locking mechanism. The release lever is operatively connected to a through the easy-entry control lever via a trained as a Bowden cable traction, in

Locking position of the tilt locking mechanism

prestressed swivel bracket, which is rotatably mounted about a lean, provided at one end of the swivel bracket swivel bracket axis and its end of the swivel bracket remote end in

Active connection with the Easy-Entry control lever is.

Furthermore, from DE 10 2005 060 483 B4 a vehicle seat with a seat frame known. On the seat frame, a backrest frame is articulated in a backrest pivot axis, which locks in its upright position of use by means of a locking and unlocking the seat frame. The unlocking device is for folding the Lehnenrahmens in a functional position via an actuator and designed as a cable traction means unlocked.

DE 10 2010 026 702 A1 describes an unlocking device for a vehicle seat longitudinal lock. The unlocking device has a release lever for releasing the vehicle seat longitudinal lock, a cable for actuating the unlocking lever and a

Carrier system, which has a provided on a backrest structural part, active entrainment means and connected to the cable, passive entrainment means on.

DE 10 2006 015 138 B4 also describes a motor vehicle seat with a seat part and a backrest which is adjustable in inclination. The backrest has a backrest frame with lateral backrest uprights and is pivotable about a fixed seat pivot axis from a use position in a forwardly inclined or a forward folded position. The backrest is by means of a pivot axis

arranged Rastverstellbeschlags with the seat part lockable and unlockable connected, wherein the Rastverstellbeschlag is locked and unlocked via a coupled thereto Bowden cable, which is actuated by a Bowden cable lever. The Bowden cable lever of the Bowden cable is arranged above the backrest pivot axis on the backrest frame, wherein the Bowdenzugseele to a first, on the

Pivot axis floating deflecting roller and guided around a second disposed within the backrest frame seat part fixed pulley and fixed with its Bowden cable lever end remote from the free end of a Rastverstellbeschlag unlocking lever.

Object of the present invention is to provide a comparison with the prior art improved device for actuating a seat fitting for a vehicle seat and an improved vehicle seat. With regard to the device, the object is achieved by the features specified in claim 1 and in terms of the vehicle seat by the features specified in claim 8.

Advantageous embodiments of the invention are the subject of

Dependent claims.

The device for actuating a seat fitting for a vehicle seat comprises a means of a control cable with the seat fitting

mechanically coupled actuator.

According to the invention an end of the control cable is so on the

Attached seat fitting that the end is always arranged in the non-actuated state of the control cable on a rotational axis of a backrest of the vehicle seat.

Thus, in a particularly advantageous manner in each folding angle of

Backrest ensures that a distance between the

Actuator and the end of the control cable is the same size. Thus, the control cable is always stressed in all positions exclusively on traction, but not on torsion. Also, a very small construction of the seat fitting is achieved due to this inventive design.

For the simplest possible realization of the continuous arrangement of the end of the control cable on the axis of rotation in the non-actuated state is provided according to a possible embodiment of the device that the end in the non-actuated state of the control cable always in the same position as an intersection of the axis of rotation with the seat fitting is arranged. According to another possible embodiment, the control cable is rotatably coupled to a switching lever such that the

Shift lever arranged end of the control cable in a first direction of rotation and opposite to this is freely movable. These

Training allows despite the arrangement of the control cable on the axis of rotation in the non-actuated state that upon actuation of the control cable actuation of the seat fitting and thus a

Release the folding function of the backrest in a simple manner and can be reliably realized.

For this purpose, an axis of rotation of the switching lever is arranged eccentrically to the axis of rotation of the backrest in a development. According to a possible development, a mechanical actuating element is provided for actuating the seat fitting, which is mechanically coupled by means of the control cable with the seat fitting. This actuator is, for example, in an upper region of

Backrest arranged and thus allows in particular a

comfortable operation of the seat fitting to release a folding function of the backrest and / or an easy-entry function of the vehicle seat.

In particular, upon actuation of the actuating element of

Actuating cable in an operating direction movable such that the switching lever rotates in a second direction of rotation about the axis of rotation. During this rotary movement of the switching lever in the second

Direction of rotation is in particular a further rotational movement of two mechanically coupled to the switching levers levers in a third rotational direction about the rotation axis triggered, wherein due to the further rotational movement in the third direction of rotation at least the rotation of Backrest is released around the axis of rotation. By this construction it is achieved on the one hand, that the seat fitting is particularly kleinbauend and on the other hand, that can be ensured in a simple and reliable manner that the end of the control cable in the non-actuated state always on a rotational axis of a backrest

Vehicle seat is arranged.

The vehicle seat according to the invention comprises a device according to the invention and is therefore characterized in a particularly advantageous manner by the fact that in each folding angle of the backrest of the

Vehicle seat ensures that a distance between the

Actuator and the end of the control cable is the same size. Thus, the control cable is always stressed in all positions exclusively on traction, but not on torsion. This will be a

Increased life of the control cable, so that a reliability of the operability of the seat fitting increases and a maintenance of the vehicle seat is reduced. Also, due to the very small construction of the seat fitting and a simplified construction of the vehicle seat and also a particularly small-sized training same in the area of the arrangement of the seat fitting achieved.

For easy implementation of the folding function of the backrest of the seat fitting is according to a possible development of a

Backrest frame and a seat part frame attached.

In one possible embodiment, the seat fitting is designed such that upon actuation thereof the folding function of the backrest and / or an easy-entry function of the vehicle seat are or is released. The easy-entry function is an entry aid that allows for increased and thus more convenient access to the rear area, for example a two-door vehicle. For example For this purpose, the vehicle seat on a rail assembly, not shown, moved in the direction of travel to increase the boarding area, at the same time, the backrest of the vehicle seat is folded forward. The seat fitting is in this case designed in particular such that the backrest comes from a folded easy-entry position

automatically locked in its last adjusted position of use, so that no time-consuming readjustment of the vehicle seat after using the easy-entry function is required. Embodiments of the invention are explained in more detail below with reference to drawings.

1 shows schematically a detail of a vehicle seat in the region of a seat fitting in a non-actuated state of a control cable, and

Figure 2 schematically shows the detail of the vehicle seat according to Figure 1 in an actuated state of the control cable.

Corresponding parts are the same in all figures

Provided with reference numerals. FIG. 1 shows a section of a vehicle seat 1 in the area of a vehicle seat

Seat fitting 2 shown in a non-actuated state of a control cable 3. Figure 2 shows the section in an actuated state of the control cable 3. The seat fitting 2 is a so-called computer, which for the realization of a so-called easy-entry function is provided. The seat fitting 2 is on a

Backrest frame 4 and a seat part frame 5 attached.

The easy-entry function is an entry-level aid that provides an enlarged and thus more convenient access to the rear area.

For example, a two-door vehicle allows. For example, for this purpose, the vehicle seat 1 is moved on a rail assembly, not shown, in the direction of travel to increase the boarding area, while the backrest of the vehicle seat 1 is folded forward, the seat fitting 2 is in this case designed in particular such that the backrest of a folded easy Entry position coming

automatically locked in its last adjusted position of use.

For actuation of the seat fitting 2, that is to release at least the folding function of the backrest, is not shown in detail,

preferably arranged in the upper region of the backrest,

provided mechanical actuator, which by means of

Betätigungszuges 3 is mechanically coupled to the seat fitting 2. In this case, the control cable 3 is rotatably coupled to a switching lever 6, wherein a free movement of the actuator facing away from the end 3.1 of the control cable 3 in a first direction of rotation D1 and opposite to this is possible. It is the end of the 3.1

Betätigungszuges 3 in the non-actuated state shown in Figure 1 regardless of a folding angle of the backrest relative to the seat part always on a rotation axis RA2 of the backrest of the vehicle seat 1, in particular in the same position as an intersection of

Rotation axis RA2 with the seat fitting 2, arranged.

Upon actuation of the actuating element of the control cable 3 is moved in the direction of actuation B and the switching lever 6 rotates in a second rotational direction D2 about a rotation axis RA1. The Rotation axis RA1 of the switching lever 6 is eccentric to

Rotation axis RA2 of the backrest, which simultaneously the

Rotation axis RA2 of the seat fitting 2 forms arranged. Due to this rotational movement is a rotational movement in a third rotational direction D3 of two mechanically coupled to the switching lever 6 lever 7, 8 about the axis of rotation RA2 of the backrest of the

Vehicle seat 1 triggered, due to this rotational movement in the third rotational direction D3, the folding function of the backrest and / or the easy-entry function are released or will.

In order to realize an automatic return movement of the switching lever 6 and with this mechanically coupled lever 7, 8, with the

Lever 8, a spring element 9 mechanically coupled, which is biased upon movement of the lever 8 in the third rotational direction D3.

Due to the arrangement of the end 3.1 of the control cable 3 on the axis of rotation RA2 the backrest of the vehicle seat 1, in particular in the same position as the intersection of the axis of rotation RA2 with the seat fitting 2, in the non-actuated state is ensured in a particularly advantageous manner in each folding angle of the backrest , the existence

Distance between the actuator and the end of the

Betätigungszuges 3 is the same size. Thus, the control cable 3 is always claimed in all positions exclusively on traction, but not on torsion. LIST OF REFERENCE NUMBERS

1 vehicle seat

2 seat fittings

3 control cable

3.1 end

4 backrest brains

5 seat frame

6 shift lever 7 lever

8 levers

9 spring element

B actuating direction D1 first direction of rotation

D2 second direction of rotation

D3 third direction of rotation

RA1 rotation axis

RA2 rotation axis

Claims

claims

1 . Device for actuating a seat fitting (2) for a

Vehicle seat (1) with an actuating element mechanically coupled to the seat fitting (2) by means of an actuating cable (3), characterized in that one end (3.1) of the actuating cable (3) is fastened to the seat fitting (2) such that the end ( 3.1) in the non-actuated state of the control cable (3) is always arranged on a rotational axis (RA2) of a backrest of the vehicle seat (1).

2. Apparatus according to claim 1,

characterized in that the end (3.1) in the non-actuated state of the control cable (3) always in the same position as an intersection of the axis of rotation (RA2) with the seat fitting

is arranged.

3. Apparatus according to claim 1 or 2,

characterized in that the control cable (3) is rotatably coupled to a switching lever (6) in such a way that the

Switching lever (6) arranged end (3.1) of the control cable (3) in a first rotational direction (D1) and opposite to this is freely movable.

4. Apparatus according to claim 3,

characterized in that a rotation axis (RA1) of

Switching lever (6) eccentric to the rotation axis (RA2) of the

Backrest is arranged.

5. Device according to one of the preceding claims,

characterized in that for actuating the seat fitting (2) a mechanical actuating element is provided, which is mechanically coupled by means of the control cable (3) with the seat fitting (2).

6. Apparatus according to claim 5,

characterized in that upon actuation of the actuating element of the control cable (3) in an actuating direction (B) is movable such that the switching lever (6) rotates in a second rotational direction (D2) about the axis of rotation (RA1).

7. Apparatus according to claim 6,

characterized in that during the rotational movement of the

Changeover lever (6) in the second direction of rotation (D2) another

Rotary movement of two mechanically coupled to the switching lever (6) levers (7, 8) in a third rotational direction (D3) about the rotation axis (RA2) can be triggered, wherein due to the further rotational movement in the third rotational direction (D3) at least the rotation of the backrest around the rotation axis (RA2) is released.

8. Vehicle seat (1), comprising a device according to one of

previous claims.

9. vehicle seat (1) according to claim 8,

characterized in that the seat fitting (2) on a

Backrest frame (4) and a seat part frame (5) is attached.

10. Vehicle seat (1) according to claim 8 or 9,

characterized in that the seat fitting (2) is formed such that upon actuation thereof a folding function of

Backrest and / or the easy-entry function are enabled or is.