VEHICLE SEAT WITH SEAT DEPTH ADJUSTMENT

Abstract

The invention relates to a vehicle seat, the vehicle seat having a seat part frame and a seat depth adjustment with a seat depth adjustment element, the seat depth adjustment element being displaceable relative to the seat part frame, wherein a first connecting element is provided and designed to connect the seat depth adjustment element to the seat part frame and to guide the seat depth adjustment element relative to the seat part frame.

Claims

1. A vehicle seat, comprising: a seat part frame; a seat depth adjustment with a seat depth adjustment element, wherein the seat depth adjustment element is displaceable relative to the seat part frame; a first connecting element, wherein the first connecting element connects the seat depth adjustment element to the seat part frame and guides the seat depth adjustment element relative to the seat part frame.

2. The vehicle seat according to claim 1, wherein the seat part frame has a first elongated hole, wherein the first connecting element extends through the first elongated hole and wherein the first connecting element is guided by the first elongated hole.

3. The vehicle seat according to claim 1, further comprising: a first spring unit, wherein the first spring unit at least partially surrounds the first connecting element in the circumferential direction, the first spring unit being operatively connected to the seat part frame and to the first connecting element at least in such a way that a spring force acts on the first connecting element and on the seat part frame.

4. The vehicle seat according to claim 3, wherein the first spring unit is made of a plastic.

5. The vehicle seat according to claim 1, wherein the first connecting element is formed from a first connecting element part and a second connecting element part, the first connecting element part and the second connecting element part being connected to one another at least non-positively.

6. The vehicle seat according to claim 2, further comprising: a second connecting element; and a third connecting element, wherein the second connecting element and the third connecting element connect the seat depth adjustment element to the seat part frame and guide the seat depth adjustment element with respect to the seat part frame, and wherein the seat part frame has a second elongated hole and a third elongated hole, wherein the second connecting element extends through the second elongated hole, wherein the second connecting element is guided by the second elongated hole, wherein the third connecting element extends through the third elongated hole, and wherein the third connecting element is guided by the third elongated hole.

7. The vehicle seat according to claim 2, wherein the first elongated hole extends in a longitudinal direction.

8. The vehicle seat according to claim 6, wherein the first elongated hole, the second elongated hole and the third elongated hole are arranged parallel to each other.

9. The vehicle seat according to claim 3, wherein first spring unit is a disc spring unit.

10. The vehicle seat according to claim 1, wherein the first connecting element is formed from a first connecting element part and a second connecting element part, the first connecting element part and the second connecting element part being positively connected to one another.

11. A vehicle seat, comprising: a seat part frame; and a seat depth adjustment with a seat depth adjustment element, wherein the seat depth adjustment element is displaceable relative to the seat part frame, wherein the seat part frame has a first elongated hole and the seat depth adjustment element has a first guide element, wherein the first guide element is designed to be guided in the first elongated hole; and a first connecting element, wherein the first connecting element extends through the first elongated hole and connects the seat depth adjustment element to the seat part frame.

12. The vehicle seat according to claim 11, wherein the first guide element has a first through opening through which the first connecting element is at least partially received.

13. The vehicle seat according to claim 11, further comprising: a first spring unit, wherein the first spring unit at least partially surrounds the first connecting element in a circumferential direction, the first spring unit being operatively connected to the seat part frame and to the first connecting element at least in such a way that a spring force acts on the first connecting element and on the seat part frame.

14. The vehicle seat according to claim 11, wherein a second connecting element and a third connecting element are provided, which are provided and designed to connect the seat depth adjustment element to the seat part frame and to guide the seat depth adjustment element with respect to the seat part frame, and wherein the seat part frame has a second elongated hole and a third elongated hole, wherein the second connecting element extends through the second elongated hole and wherein the second connecting element is guided by the second elongated hole, wherein the third connecting element extends through the third elongated hole and wherein the third connecting element is guided by the third elongated hole.

15. The vehicle seat according to claim 14, wherein a second spring element is provided, the second spring element having a first end and a second end, the first end being fixedly connected to the seat depth adjustment element and the second end being in operative contact with the second elongate hole in such a way that a tolerance of the seat depth adjustment element with respect to the second elongate hole can be compensated.

16. The vehicle seat according to claim 14, wherein a second spring element and a third spring element are provided, the second spring element having a first end and a second end, the first end being fixedly connected to the seat depth adjustment element and the second end being in operative contact with the second elongate hole in such a way that a tolerance of the seat depth adjustment element relative to the second elongate hole can be compensated, and wherein the third spring element has a first end and a second end, wherein the first end is fixedly connected to the seat depth adjustment element and the second end is in operative contact with the third elongated hole in such a way that a tolerance of the seat depth adjustment element to the third elongated hole can be compensated.

17. The vehicle seat according to claim 13, wherein first spring unit is a disc spring unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Further aims, advantages and usefulness of the present invention can be seen from the following description in conjunction with the drawing. Hereby show:

[0057] FIG. 1A Vehicle seat with seat depth adjustment according to a preferred embodiment in a first state;

[0058] FIG. 1B Vehicle seat according to FIG. 1A in a second state;

[0059] FIG. 2A Seat part frame and seat depth adjustment of the vehicle seat according to FIG. 1B;

[0060] FIG. 2B Seat part frame and seat depth adjustment of the vehicle seat according to FIG. 1A;

[0061] FIG. 3A Seat part frame and seat depth adjustment of the vehicle seat according to FIG. 2A in a top view;

[0062] FIG. 3B Seat part frame and seat depth adjustment of the vehicle seat according to FIG. 2B in a top view;

[0063] FIG. 4A Section along axis A of FIG. 3B;

[0064] FIG. 4B Section along axis B of FIG. 3B;

[0065] FIG. 4C Section along axis C of FIG. 3B;

[0066] FIG. 5A Seat part frame and seat depth adjustment of the vehicle seat in a top view according to a further embodiment;

[0067] FIG. 5B Detail view of FIG. 5A;

[0068] FIG. 5C Detail view of FIG. 5A;

[0069] FIG. 6A Perspective bottom view of the seat depth adjustment according to FIG. 5A;

[0070] FIG. 6B Detail view of FIG. 6A.

DETAILED DESCRIPTION

[0071] In the figures, identical components are to be understood with the corresponding reference signs. For the sake of clarity, some components may not have a reference sign in some figures, but have been designated elsewhere.

[0072] In FIG. 1A a vehicle seat 1 according to a preferred embodiment is shown in a first state Z1 and in the figure in a second state Z2. The states Z1, Z2 refer to the position of a seat depth adjustment element 5 of a seat depth adjustment 4, wherein the first state Z1 describes a state in which the seat depth adjustment element 5 is shown in its minimum position, i.e. in the position in which the available seat surface is minimum. Accordingly, the second state Z2 describes a state in which the seat depth adjustment element 5 is in its maximum position, i.e. in the position in which the available seat surface is at a maximum. The second state Z2 is achieved by a forward displacement of the seat depth adjustment element 5 in a longitudinal direction L, and the first state Z1 is achieved by a rearward displacement of the seat depth adjustment element 5 in the longitudinal direction L, wherein the seat depth adjustment element 5 is maximally rearwardly displaced in the first state Z1 and maximally forwardly displaced in the second state Z2. A displacement of the seat depth adjustment element is to be understood relative to a seat part frame 2.

[0073] The vehicle seat 1 has the seat part frame 2 and preferably a backrest frame 3. Furthermore, the vehicle seat 1 comprises the seat depth adjustment 4 with the seat depth adjustment element 5.

[0074] FIGS. 2A and 2B show a perspective view of the seat sub-frame 2 with the seat depth adjustment 4, whereby the second state Z2 is shown in FIG. 2A and the first state Z1 is shown in FIG. 2B.

[0075] Preferably, it may be provided that the seat depth adjustment element 5 is formed at least partially complementary to the seat part frame 2, so that the guidance of the seat depth element 5 can be improved. Particularly preferably, it may be provided that a seat depth adjustment element guide 17 is provided, which is arranged centrally with respect to the seat depth adjustment element 5. Preferably, the seat depth adjustment element guide 17 is prism-shaped, whereby the first elongated hole 7 can be formed on an upper side 18.

[0076] According to FIGS. 2A and 2B, a second connecting element 8 and a third connecting element 10 are shown, wherein the second connecting element 8 is guided in a second elongated hole 9 and the third connecting element 10 is guided in a third elongated hole 11. Preferably, the first elongated hole 7 is arranged above the second elongated hole 9 and the third elongated hole 11 as seen in height direction H, so that accordingly the first connecting element 6 is also arranged at least partially above the second connecting element 8 and the third connecting element 10, whereby further undesired movements can be prevented.

[0077] Preferably, the first connecting element 6 is arranged in front of the second connecting element 8 and the third connecting element 10 as seen in the longitudinal direction L, so that tilting of the seat depth adjustment element 5 can be prevented.

[0078] FIG. 3A shows a top view of FIG. 2A and FIG. 3B a top view of FIG. 2B.

[0079] Because the connecting elements 6, 8, 10 are offset in longitudinal direction L, the elongated holes 7, 9, 11 are also offset from one another in longitudinal direction L. For this purpose, it is conceivable that a first offset element 19 is provided for the second connecting element 8 and a second offset element 20 is provided for the third connecting element 10 of the seat depth adjustment element 5 in order to achieve an offset in the longitudinal direction L with respect to the first connecting element 6.

[0080] Accordingly, a first bulge of the seat part frame 2 is therefore also provided for the second offset element 19 and a second bulge of the seat part frame 2 is provided for the third offset element 20 in order to be able to provide all components in a space-saving manner.

[0081] This is due to the fact that a first mounting surface 23 of the seat depth adjustment element 5 is provided on which a seat cushion, a seat cover or the like is to be applied in order to be able to provide a seating surface. In order to be able to achieve a seat surface that is as stepless as possible, a second mounting surface 24 of the seat part frame 2 is provided, which is arranged essentially at the same height as the first mounting surface 23, as seen in the height direction H. The second mounting surface 24 of the seat depth adjustment element 5 is provided with a seat cushion, a seat cover or the like to be able to provide a seat surface.

[0082] Preferably, the second connecting element 8 and the third connecting element 10 are substantially the same in terms of position in the longitudinal direction L and height direction H.

[0083] The connecting elements 6, 8, 10 are essentially the same and are described in more detail in connection with FIGS. 4A to 4C.

[0084] FIG. 4A shows a section of a portion of FIG. 3B along axis A, FIG. 4B shows a section of a portion of FIG. 3B along axis B, and FIG. 4C shows a section of a portion of FIG. 3B along axis C.

[0085] The connecting element 6, 8, 10 has a first connecting element part 13 with a first connecting portion 25 and a second connecting element part 14 with a second connecting portion 26. The connecting element parts 13, 14 are connected to each other, preferably screwed together. The first connecting section 25 is directly connected to the seat depth adjustment element 5, the second connecting portion 26 being indirectly connected to the seat part frame 2 by means of a first spring unit 12. The first connecting portion 25 is arranged above the second connecting portion 26. The connecting element 6, 8, 10 extends through the elongated hole 7, 9, 11.

[0086] FIG. 4A shows the first connecting element 6, which is designed as a fixed bearing. The fixed bearing therefore only allows movement along the elongated hole 7.

[0087] The first spring element 12 is designed as a disc spring unit which is arranged circumferentially around the first connecting element 6 and is rigidly connected to the first connecting element 6 by means of a connecting area 27. The first spring element is in operative contact with the seat part frame 2. The disc spring unit has a first portion 29 and a second portion 30, the first portion 29 being connected to the first connecting element 6 and extending through the first elongated hole 7 and being in contact with an inner side 31 of the first elongated hole 7. The second portion 30 joins the first portion 29 and extends radially to the height direction H, the second portion 30 being connected to the seat part frame 2 and the second connecting portion 26.

[0088] A first width 28 of the elongated hole 7 is such that when the first spring element 12 is inserted, the first spring element 12 is compressed in the width direction B, i.e. a spring force is produced in the width direction B and the first connecting element 6 is not movable in the width direction B. The extension of the first spring element 12 in the width direction B in an unloaded state is therefore greater than the extension of the first elongated hole 7 in the width direction B.

[0089] The first spring unit 12 is preferably rotationally symmetrical.

[0090] FIG. 4B shows a section along axis B.

[0091] FIG. 4C shows a section along axis C, so that the second connecting element 8 is shown. The same explanations regarding this FIG. 4C also apply to the third connecting element 10.

[0092] As can be seen, the first offset element 19 is partially recognisable, whereby the first offset element 19 is slidingly connected to the seat part frame 2. A second width 32 of the second elongated hole 9 is thereby such that the second width 32 of the extension of the first spring element 12 in width direction B in an unloaded state corresponds to the extension of the second elongated hole 9 in width direction B, i.e. that the spring element 12 is unloaded. It is therefore conceivable that the spring element 12 of the second connecting element 8 can be subjected to a force in order to be able to compensate for manufacturing tolerances in the width direction B. For this purpose, the first offset element 19 is also formed at a distance from the second elongated hole 8 in width direction B, so that a movement in width direction B is basically possible.

[0093] The second elongated hole 8 has a first portion 33 and a second portion 34, which are spaced apart from each other in the width direction B, and extend at least partially in the height direction H and overlap with the first offset element 19 as seen in the width direction B.

[0094] Because movement of the second connecting element 8 is possible in the longitudinal direction L and in the width direction B, the second connecting element 8 is a floating bearing.

[0095] FIGS. 5A to 5C show an alternative embodiment, wherein the seat part frame 2 comprises a first elongated hole 7 and the seat depth adjustment element 5 comprises a first guide element 35, wherein the first guide element 35 is configured to be guided in the first elongated hole 7, wherein further a first connecting element 6 is provided, wherein the first connecting element 6 extends through the first elongated hole 7 and connects the seat depth adjustment element 5 to the seat part frame 2.

[0096] The first guide element 35 is formed integrally with the seat depth adjustment element 5. Preferably, the first guide element 35 is formed complementary to the first elongated hole 7 at least in width direction B. This means that no movement of the first guide element 35 in width direction B is possible, so that the first guide element 35 is described as a fixed bearing according to FIGS. 5A to 5C.

[0097] The first guide element 35 has a through opening 15 which extends in the height direction H. The passage opening 15 is formed in such a way that the first connecting element 6 can extend through the through opening 15.

[0098] With regard to the second elongated hole 9 and analogously to the third elongated hole 11, the seat depth adjustment element 5 has a second spring element 15 and a third spring element 40, respectively, which are each preferably also formed as an integral part of the seat depth adjustment element 5. The second spring element 15 as well as the third spring element 40 has a first end 36 and a second end 37, wherein the first end 36 is arranged around a through-opening 15, respectively represents the through opening 15. The second end 37 is formed as a leg, similar to a leg spring, and contacts the second elongated hole 9 on the inside 31. The second end 37 extends in the longitudinal direction L and has a bend in the width direction B, which is operatively connected to the second elongated hole 9, so that a movement in the width direction B is possible; a floating bearing is described.

[0099] FIGS. 6A and 6B show a perspective bottom view of the alternative embodiment. The second spring elements 16 with respect to the second elongated hole 9 and the third elongated hole 11 are arranged mirrored to each other with respect to the longitudinal axis L.

[0100] FIG. 6B shows a close-up view of the second spring element as described. Further, a first guide 38 and a second guide 39 are shown, which can interact with upwardly directed portions 33, 34 of the corresponding oblong hole 9 when moving in width direction B.

[0101] The sections 33, 34 are thus arranged between the guides 38, 39 and the second spring element 16.

[0102] All features disclosed in the application documents are claimed as essential to the invention, provided that they are individually or in combination new compared to the prior art.

LIST OF REFERENCE SIGNS

[0103] 1 Vehicle seat

[0104] 2 Seat part frame

[0105] 3 Backrest frame

[0106] 4 Seat depth adjustment

[0107] 5 Seat depth adjustment element

[0108] 6 First connecting element

[0109] 7 First elongated hole

[0110] 8 Second connecting element

[0111] 9 Second elongatedhole

[0112] 10 Third connecting element

[0113] 11 Third elongated hole

[0114] 12 First spring unit

[0115] 13 First connecting element part

[0116] 14 Second connecting element part

[0117] 15 Through opening

[0118] 16 Second spring element

[0119] 17 Seat depth adjustment unit guide

[0120] 18 Upper surface

[0121] 19 First offset element

[0122] 20 Second offset element

[0123] 21 First bulge

[0124] 22 Second bulge

[0125] 23 First mounting surface

[0126] 24 Second mounting surface

[0127] 25 First connection section

[0128] 26 Second connection section

[0129] 27 Connecting area

[0130] 28 First width

[0131] 29 First portion

[0132] 30 Second portion

[0133] 31 Inner side

[0134] 32 Second width

[0135] 33 First portion

[0136] 34 Second portion

[0137] 35 First guide element

[0138] 36 First end

[0139] 37 Second end

[0140] 38 First guide

[0141] 39 Second guide

[0142] 40 Third spring element

[0143] Z1 First state

[0144] Z2 Second state

[0145] H Height direction

[0146] L Longitudinal direction

[0147] B Width direction