DE102006036532A1 - Vehicle seat, has seat part rotating around rotation axis, where pelvic tilting of seat occurs within range of hip point by changing upward and backward rotation angles of seat part for correcting false position of lumbar spine - Google Patents

Abstract

The seat (10) has a seat part (12) and a backrest (14), where the seat part rotates around a rotation axis transverse to a driving direction, around upward and downward rotation angles. The backrest rotates around another rotation axis in a driving direction, and around forward and backward rotation angles. A pelvic tilting of the seat occurs within a range of a hip point (HP) by changing upward and backward rotation angles of the seat part occurring due to simultaneous change of the forward and backward rotation angles of the backrest for correcting false position of a lumbar spine.

Description

The The invention relates to a vehicle seat with the features of the preamble of claim 1.

current seats are mostly what and deeply padded, while large and variously provided with troughs or elevations. On such seats becomes the overburdening body weight evenly and Untargeted on all contacted with the seat body parts distributed, and thus on those who are responsible for such pressure or pressure direction are not prepared by nature and thereby take damage. Anyway, these upholstery goes away Travel for a self-dynamic mobility lost and it becomes relative sat rigidly positioned, especially since the bony Ischial tuberosity their function as the main one Arrester for lose the seat pressure and axis of rotation of the ischial tuberosity.

From the patents DE 197 52 355 and DE 196 42 348 the relationship between the position of the postural pelvis and the shaping or lordization of the lumbar spine is described. Thereafter, by lifting or lowering a pivotable, rear seat part of a transversely to the sitting direction in about half divided seat each lumbar spine to each lordization or be deformed. Since mainly only mechanical misalignments, such as hollow back, flat back and kyphosis, become painfully conspicuous in the lumbar spine, the causes can be corrected and eliminated by changing the pelvic position. This relationship develops from the leverage effect in the seat mechanism. The change in the lordosis bow in radians by the respective pelvic position can be detected, the radians being synchronous with the pivoting of a part of the seat part up or down changeable.

Various seats have already been developed to make the sitting process more dynamic by integrating a device for exercising a type of spinal massage in the backrest, or gently turning the seat bones alternately on the left and right sides and the entire pelvis horizontally. Other known seats are mounted resiliently in total to achieve a self-dynamic swing or the rear seat part of a two-part seat can be based on the front seat plane either according to the US 4,574,901 A just down or according to the DE 12 56 840 and DE 28 56 177 only swing upwards. A change in the pelvic position by a mobility in sitting, which can influence the entire posture to the head position, so according to the prior art by raising or lowering the rear, pivoting seat part of a two-part seat from the DE 197 52 355 C2 and the DE 101 56 155 A1 known.

Similar information on the effect of tilting seats offer the DE 198 48 074 A1 and the DE 92 06 76 ,

adversely in the known solutions However, that is a change the angle of inclination of the seat [Beckenkippung] with the previous solutions mostly an elaborate design Part of the seat part and with the relocation of part of the seat part surface a change the body position, especially the upper body, relative to the vehicle is accompanied, so that the previously set seating position changed and thus safety aspects in terms of visibility a driver possibly reduced to the surrounding vehicle traffic is.

Of the The invention is therefore based on the object, a vehicle seat to provide that during a Sitzperiode easy adjustment has to the Seat position of a seat user to dynamize.

A Another object of the invention is the seating position of a Seated almost despite the adjustment to dynamize the sitting to keep constant.

Further the task consists in this dynamization of the sitting position preferably executable with already existing in known vehicle seats funds shape.

The Invention is in conjunction with the preamble of claim 1 solved by that through every change a first pivoting angle of a seat part or any change the first pivot angle of the seat part with simultaneous change a second pivot angle of a backrest a Beckenkippung in the area of a hip point is achievable, causing a correction of misalignments of the lumbar spine and dynamization of the pelvis [pelvic tilting] of a seated person can be achieved.

Prefers is a belonging to the first pivot angle fulcrum of the seat part and a second pivot angle associated pivot point of the backrest variably definable.

In a first fundamental Execution is the fulcrum of the seat part so specifiable that the hip point after pelvic tilting almost to its starting position remains constant.

In a second fundamental Execution is the fulcrum of the seat part so specifiable that the hip point after pelvic tilting relative to its starting position into a Hüftpunkttieflage or in a Hüftpunkthochlage is relocatable.

at a Beckenkippung by changing the first pivot angle of the seat part and with simultaneous change the second pivot angle of the backrest relative to the vehicle is a directionally directed between the seat part and backrest Movement while maintaining a backrest angle or a counter-angle Movement under change of the backrest angle executable.

By this in the same direction or in opposite directions directed movement of seat part and backrest results in an inventive effect, namely, that the arm chain angle between a shoulder point of the sitter and a steering wheel at Beckenkippung by changing the first pivot angle of the seat part and under change the second pivot angle of the backrest relative to the vehicle, while maintaining a backrest angle, in only one of the respective directions [the same direction] or both directions [in opposite directions] variable is.

In preferred embodiment of the invention, the Beckenkippung is under change of the seat part or under change the seat part and the backrest by a manual or a drive-side pivoting movement on Seat part or on the seat part and the backrest causes.

Prefers arise three variants.

In a first embodiment the vehicle seat can be executed this way be that with Beckenkippung under change of seat part and backrest the seat part and the backrest for execution the pivoting movements only mechanically coupled together are, so that a manual pivoting movement on the seat part a Nachschwenkung the backrest and vice versa.

In a second embodiment we executed the vehicle seat so that in pelvic tilting under change of seat part and backrest the seat part and the backrest for execution the pivoting movements are mechanically coupled to each other, so that a drive-side pivoting movement on the seat part a non-powered Nachschwenkung the backrest and vice versa.

In a third embodiment the vehicle seat is carried out in such a way that the seat part or the seat part and the backrest for pelvic tilting to execution the pivoting movements have drives, the control side individually are responsive, so that a drive-side pivoting movement on Seat part alone executable is or a drive-side pivoting movement on the seat part or the backrest executable is that a drive-side Nachschwenkung the backrest or the seat part and vice versa.

To the One are the pivoting movements to create a dynamic one Beckenkippung in another preferred embodiment by vornehmbare on a control unit Programming and / or reprogramming to be arranged or existing drives on the seat part or on the seat part and the backrest configurable.

To the Other are the pivoting movements and thus the dynamic Beckenkippung through at the control unit vornehmbare programmings and / or reprogramming to be arranged or existing drives in the seat part or on the seat part and the backrest to continuous and / or discontinuous cyclic and / or Uncyclic swivel movements [massage function] configurable.

Further preferred embodiments of the invention will become apparent from the others, in the subclaims mentioned features.

The invention will be explained below in embodiments with reference to the accompanying drawings. Each figure shows in three schematic representations of the pivoting movements of a vehicle seat 10 from seat part 12 and backrest 14 starting from a starting position of 1.1 . 2.1 . 3.1 . 4.1 . 5.1 and 6.1 , Show it

1.1 to 1.3 a first possibility of Beckenkippung, in which only the seat part is pivoted and a hip point remains virtually unchanged;

2.1 to 2.3 a second possibility of pelvic tilting, in which the seat part and backrest are pivoted in the same direction while maintaining the fulcrum angle and the hip point remains virtually unchanged;

3.1 to 3.3 a third possibility of pelvic tilting, in which the seat part and backrest are pivoted in opposite directions while changing the backrest angle and the hip point remains virtually unchanged;

4.1 to 4.3 a fourth possibility the Beckenkippung, in which only the seat part is pivoted and the hip point is changeable;

5.1 to 5.3 a fifth possibility of Beckenkippung, be pivoted in the direction of the seat part and back while maintaining the fulcrum direction and the hip point is changeable and

6.1 to 6.3 a sixth possibility of pelvic tilting, in which the seat part and backrest are pivoted in opposite directions while changing the backrest angle and the hip point can be changed.

The figures each show the seat part 12 and the backrest 14 of the vehicle seat 10 , In the seat part 12 and the backrest 14 are each a variable, depending on the seat construction in redesign predefinable or present at already installed vehicle seats, pivot point DP shown. In addition, each figure shows a hip point HP _normal in normal position and with displacement of the hip point HP _normal is at the same time depending on a hip point depression HP _deep or a Hüftpunkthochlage HP displayed _high .

Furthermore, the show 2.1 to 2.3 and 3.1 to 3.3 as well as the 5.1 to 5.3 and 6.1 to 6.3 a shoulder point SP in normal position (white circle) and a steering wheel 16 with a arm chain angle Δ, between shoulder point SP and steering wheel 16 , A second dark circle indicates a displacement of the shoulder point SP, which is essentially due to a pivotal movement of the backrest 14 is caused.

In addition, the first pivot angle of the seat part 12 as α + [top] or α- [bottom] and the second tilt angle of the backrest 14 β + [front] or β- [back] with respect to a direction x indicated.

A backrest angle γ or a change in the fulcrum angle γ between the seat part 12 and backrest 14 is in each case in relation to the 1.1 . 2.1 . 3.1 . 4.1 . 5.1 and 6.1 given in a mathematical relationship.

The 1 to 6 show the possible pivoting movements of seat part 12 and backrest 14 , wherein the embodiments described above, such as these pivotal movements on the vehicle seat 10 can be caused, are not shown.

There is, as described, the possibility of manual pivoting movements of seat part 12 and backrest 14 perform independently of each other or are mechanically coupled.

Furthermore, there is the possibility either on the seat part 12 or on the backrest 14 To perform drives that then perform a mechanical coupling individually or collectively, or to arrange drives that regardless of a mechanical coupling the seat part 12 and / or the backrest 14 move.

The corresponding manual requirements or coupling requirements between seat part 12 and / or backrest 14 or the necessary drives are provided in a redesign or are possibly already present and can be redesigned by reprogramming to an "Active Beckenkippung".

The following individual figures show the various adjustment, the 1.1 to 1.3 show a first adjustment, in which a pivot point DP in the seat part 12 is arranged so that a pivoting α +, α- of the seat part 12 essentially does not lead to a shift of the hip point HP _normal . With this option, the backrest remains 14 unchanged, so that the Beckenkippung only by pivoting α +, α- of the seat part 12 is caused. The backrest angle γ ₁ in the starting position ( 1.1 .) changes here and is according to 1.2 reduced to γ ₂ <γ ₁ and according to 1.3 increased to γ ₃ > γ ₁ .

In contrast, shows 2 a second adjustment, a co-movement of seat part 12 and backrest 14 , in which the backrest angle γ ₁ , γ ₂ , γ ₃ in the 2.1 ., 2.2 and 2.3 stay constant as there is backrest 14 and seat part 12 swivel in the same direction.

The pivot point DP of 2.1 to 2.3 is analogous to the 1.1 to 1.3 arranged and is by the pivoting of the backrest 14 displaced only in or counter to an x-direction, however, remains _normal in its z-direction in its Hüftpunktnormallage HP.

By the co-rotating pivotal movement α +, β- / α-, β + of the seat part 12 and the backrest 14 However, there is a change in the arm chain angle Δ, as shown by the shoulder points shown with white [initial position] and dark circles [changed position after pivoting].

Starting from 2.1 the shoulder point SP is displaced counter to the direction of travel x to the left and according to 2.3 shifted to the right in the direction of travel x, as the dark circles, which show the shoulder points SP show. By this type of Beckenkippung the Armkettenwinkel Δ is thus changed in each case in one of the two directions.

The 3 shows in a third adjustment compared to 2 the case that the pivoting movements are carried out in opposite directions, so that starting from the starting position ( 3.1 ) the seat part 12 and the backrest 14 in terms of their swivel angle in α +, β + and according to 3.3 be pivoted to α-, β-.

A hip point displacement also takes place here only in the x-direction, since a displacement of the hip point HP in the z-direction does not occur due to the arrangement of the pivot point DP below the hip point HP, so that the hip point position remains _normal at HP.

By the oppositely directed pivoting movement of the seat part 12 and backrest 14 However, the change of the Armkettenwinkels Δ by changing the pivot angle α, β adaptable, since the pivoting movements α for the seat part 12 or β for the backrest 14 are designed in opposite directions.

Based on the shoulder points SP shown (white or dark circle representations), this effect is not visible, however, the shoulder points SP could be shown superimposed, as by the oppositely directed pivoting movement α, β of seat part 12 and backrest 14 an adjustment of the arm chain angle Δ is possible.

Analogous to the 1 to 3 are the 4 to 6 represented, with the essential difference lies in the fact that the pivot point SP in the seat part 12 for the realization of the Beckenkippung example in the middle of the seat part 12 is arranged.

This results in accordance with the 4.1 . 4.2 and 4.3 a similar possibility of Beckenkippung, as in the 1.1 , to 1.3 , wherein, however, by the displacement of the pivot point DP in the middle of the seat part 12 in 4.2 a hip point in depth of HP _deep and according 4.3 , a hip point in high position HP is _highly trained. With such a fourth adjustment possibility, therefore, the hip point position HP is changed during pelvic tilting.

The same effect occurs in the 5.1 to 5.3 , analogous to 2 in a co-directed pivoting movement α +, β- ( 5.2 ) or α-, β + ( 5.3 ) starting from 5.1 are relocatable.

The rectified pivotal movement α +, β- / α-, β + of the seat part 12 and the backrest 14 leads here parallel to a change in the arm chain angle Δ, in which case by the other arrangement of the pivot point DP in the seat part 12 just in addition a displacement of the hip point HP ( 5.2 ) to a hip point position in deep layer HP _deep and to a hip point in high position HP _high according to 5.3 is executable.

Similarly, in 6 Finally, a sixth Verstellmöglichkeit shown, the opposite movement α +, β + / α-, β- of seat part 12 and backrest 14 represents, in turn, the seat part 12 and the backrest 14 according to the 6.2 and 6.3 is pivoted in opposite directions. By the arrangement of the pivot point DP in the seat part 12 it comes, similar in the 5.1 to 5.3 , for changing the hip point position to a hip point HP in low level HP _deep ( 6.2 _High () and a hip point HP in high position HP 6.3 ).

LIST OF REFERENCE NUMBERS

• 10 vehicle seat
• 12 seat part
• 14 backrest
• 16 steering wheel
• HP - hip point
• HP _normal - hip point in starting position
  
• HP _deep - Hip point in low position
  
• HP _high - Hip point in high position
  
• α _1,2,3 - first swivel angle seat part 12
• β _1,2,3 - second swivel angle backrest 14
• γ - backrest angle between seat part 12 and backrest 14
• Δ - arm chain angle between shoulder point SP and steering wheel 16
• DP ⊕ - pivot
• HP
  
  - hip point
• SP
  
  - shoulder point

Claims (13)

Vehicle seat with a seat part ( 12 ) and a backrest ( 14 ), wherein the seat part ( 12 ) about a first pivot axis transversely to a direction of travel (x), about a first pivot angle (α) up and down (α +, α-) and alternatively the backrest ( 14 ) about a second pivot axis in the direction of travel (x) to a second pivot angle (β) to the front and rear (β +, β-) is pivotally, characterized in that by - any change (α +, α-) of the first pivot angle (α) of the seat part ( 12 ) or - any change (α +, α-) of the first pivoting angle (α) of the seat part ( 12 ) with simultaneous change (β +, β-) of the second pivoting angle (β) of the backrest ( 14 ) a Beckenkippung in the region of a hip point (HP) is effected, whereby a correction of false Positions of the lumbar spine and dynamization of the pelvis [Beckenkippung] a seated is achievable. Vehicle seat according to Claim 1, characterized in that a pivot point (DP) of the seat part belonging to the first pivot angle (α) ( 12 ) and to the second pivot angle (β) belonging pivot point (DP) of the backrest ( 14 ) can be variably specified. Vehicle seat according to claim 2, characterized in that the pivot point (DP) of the seat part ( 12 ) can be specified so that the hip point (HP _normal ) remains almost constant after pelvic tilting relative to its starting position. Vehicle seat according to claim 2, characterized in that the pivot point (DP) of the seat part ( 12 ) can be specified so that the hip point (HP _normal ) after pelvic tilting relative to its starting position in a Hüftpunkttieflage (HP _deep ) or in a Hüftpunkthochlage (HP _high ) is displaced. Vehicle seat according to claim 1, characterized in that a Beckenkippung by changing (α +, α-) of the first pivot angle (α) of the seat part ( 12 ) and changing (β +, β-) the second pivoting angle (β) of the backrest (FIG. 14 ) relative to the vehicle - while maintaining [directional movement] or - change [counter-directional movement] of a backrest angle (γ) between the seat part ( 12 ) and backrest ( 14 ) is executable. Vehicle seat according to claim 5, characterized in that the arm chain angle (Δ) between a shoulder point (SP) of the seated person and a steering wheel ( 16 ) at Beckenkippung by changing (α +, α-) of the first pivot angle (α) of the seat part ( 12 ) and changing (β +, β-) the second pivoting angle (β) of the backrest (FIG. 14 ) relative to the vehicle while maintaining [the same direction of movement] of a backrest angle (γ) in the respective direction influenced changeable. Vehicle seat according to claim 5, characterized in that the arm chain angle (Δ) between the shoulder point (SP) of the seated and the steering wheel ( 16 ) at Beckenkippung by changing (α +, α-) of the first pivot angle (α) of the seat part ( 12 ) with change (β +, β-) of the second pivoting angle (β) of the backrest ( 14 ) relative to the vehicle with change [counter-directional movement] of a backrest angle (γ) in both directions influenced changeable. Vehicle seat according to claim 1, characterized in that the pelvic tilting while changing the seat part ( 12 ) or changing the seat part ( 12 ) and the backrest ( 14 ) - by a manual or a drive-side pivotal movement (α +, α-, β +, β-) on the seat part ( 12 ) or on the seat part ( 12 ) and the backrest ( 14 ) is feasible. Vehicle seat according to claim 8, characterized in that at Beckenkippung changing the seat part ( 12 ) and backrest ( 14 ) - the seat part ( 12 ) and the backrest ( 14 ) for the execution of the pivoting movements (α +, α-, β +, β-) are mechanically coupled to each other, so that a manual pivoting movement (α +, α-) on the seat part ( 14 ) a Nachschwenkung the backrest ( 14 ) and vice versa. Vehicle seat according to claim 8, characterized in that at Beckenkippung changing the seat part ( 12 ) and backrest ( 14 ) - the seat part ( 12 ) and the backrest ( 14 ) for the execution of the pivotal movements (α +, α-, β +, β-) are mechanically coupled to each other, so that a drive-side pivotal movement (α +, α-) on the seat part ( 14 ) a drive-free Nachschwenkung the backrest ( 14 ) and vice versa. Vehicle seat according to claim 8, characterized in that the seat part ( 12 ) or the seat part ( 12 ) and the backrest ( 14 ) for pelvic tilting driving has - which are individually addressable for the execution of the pivotal movements (α +, α-, β +, β-) on the control side, so that a drive-side pivoting movement (α +, α-) on the seat part ( 12 ) is alone executable or - a drive-side pivotal movement (α +, α-) on the seat part ( 12 ) or the backrest ( 14 ) is executable that a drive-side Nachschwenkung the backrest ( 14 ) or the seat part ( 12 ) or vice versa. Vehicle seat according to claim 1 to 11, characterized in that the pivoting movements (α +, α-, β +, β-) and thus a dynamic Beckenkippung by vornehmbare on a control unit programming and / or reprogramming or existing drives on the seat part ( 12 ) or the seat part ( 12 ) and the backrest ( 12 ) are configurable. Vehicle seat according to claim 1 to 11, characterized in that the pivoting movements (α +, α-, β +, β-) and thus a dynamic Beckenkippung by vornehmbare on the control unit programming and / or Umprogrammierun gene to be arranged or existing drives in the seat part ( 12 ) or on the seat part ( 12 ) and the backrest kl14 to continuous and / or discontinuous cyclic and / or non-cyclical pivoting movements [massage function] are configurable.