DE102011121267A1 - Seat heater for motor car seat, has heating wire made from stainless steel or copper and comprising deflection regions that are arranged in front end regions of side flanges of seat surface and end regions of side flanges of backrest - Google Patents

Abstract

The heater (10) has side flanges (13) arranged on a side of a seat surface (12) and a side of a backrest. A heating wire (11) is formed in meander-shape at the side flanges, and comprises portions (15) running along longitudinal direction of the seat surface and the backrest. The heating wire comprises deflection regions (16) between the portions, where the deflection regions are arranged in front end regions of the side flanges of the seat surface and end regions of the side flanges of the backrest. The heating wire is made from stainless steel or copper.

Description

Seat heating with a heating wire for a motor vehicle seat with a seat and a backrest, wherein side of the seat and side of the backrest side cheeks are provided, the heating wire is meandering on the side cheeks and having portions extending in the longitudinal direction of the seat and the backrest.

The DE 10 2005 051 738 A1 describes a motor vehicle seat with a seat heater, which is equipped with a surface heating element, which is connected to an electrical contact conductor band to be connected to a power source, which is arranged in the side walls and designed as an electrically conductive textile fabric. In this way, it is to be avoided that a person with their body weight in the region of the side cheeks during entry and exit by a high mechanical stress occurring on the contact conductor band this damage over time and impair its function. However, designed as a textile sheet Kontaktleiterband is a relatively complex and therefore costly solution.

The invention has the object to propose a seat heating of the type mentioned above, which ensures a simple and inexpensive way that it remains functional despite the high mechanical stress when entering and exiting permanently.

The object is achieved by a seat heating with a heating wire for a motor vehicle seat having a seat surface and a backrest, wherein side of the seat and side of the backrest side cheeks are provided, the heating wire is meandering on the side cheeks and has sections, each in the longitudinal direction of the seat and the backrest, wherein the heating wire deflection regions between each extending in the longitudinal direction of the seat and the backrest portions which are arranged at least in the front end portions of the side cheeks of the seat and in the end regions of the side cheeks of the backrest. When entering and exiting the side cheeks are mechanically stressed most strongly in their middle area. Since the deflecting areas are the most heavily loaded when entering and exiting and they are located by their arrangement in the end regions of the side walls outside of the most heavily used middle area, a reliable operation of the seat heating is ensured in the long term.

If the deflection regions of the heating wire are also arranged in the rear end regions of the side cheeks of the seat surface or in a transition area of the seat surface extending upwards toward the backrest, they are also located outside the most heavily stressed central region of the side cheeks.

The deflection regions may have short rectilinear sections, which are arranged perpendicular to the respective sections running in the longitudinal direction of the seat surface and the backrest. Due to the fact that the vertical sections are only provided with a short length, they can be subjected to good mechanical stress, thereby improving the operational reliability of the seat heating system.

For the same reason, alternatively, the deflection regions may be round.

In order to additionally improve the mechanical strength of the round deflection regions, they can have a small radius of curvature.

So that the frequent entry and exit can not interfere with the undisturbed operation of the seat heating, the heating wire from the side cheeks of the seat can also extend in the upwardly to the backrest extending transition region and from there to the seat and the backrest.

In order to achieve a high heating effect on the seat and the backrest, the heating wire on the seat and the backrest can also be arranged meandering.

The heating wire can be glued with little effort on a foam molding the vehicle seat.

Alternatively, it is also possible to sew the heating wire in a seat cover.

When the heating wire is made of stainless steel, it has a high stability and makes it possible to form the deflection areas with small radii of curvature.

The heating wire can be made of copper particularly cost-effectively.

Furthermore, the invention relates to the motor vehicle seat, wherein it has the seat heating according to one of claims 1 to 11.

The invention also relates to the motor vehicle, wherein it has the motor vehicle seat according to one of claims 1 to 12.

Hereinafter, various embodiments of the seat heating will be explained in more detail with reference to the accompanying drawings.

in detail show:

1 a perspective top view of a schematic representation of a seat surface;

2 a sectional view through the seat 2 ;

3 a top perspective view of a schematic representation of a backrest;

4 a detail view of a side wall and a heating wire of another embodiment.

The 1 and 3 show a seat heating 10 with a heating wire 11 that is along a seat 12 , a side wall 13 and a transition area 14 to a backrest 18 and their side cheeks 19 runs.

The heating wire 11 is meandering on the side cheeks 13 and 19 arranged, wherein he arranged parallel to each other sections 15 and 20 having, in the longitudinal direction of the seat 12 and the backrest 18 run. Between the longitudinal direction of the seat 12 and the backrest 18 running sections 15 and 20 are in the end areas of the sidewalls 13 and 19 deflection 16 . 17 . 21 and 22 intended. When entering and exiting the side walls 13 and 19 mechanically stressed the most in their middle range by the body weight of a person. This is especially true for the sidewall 13 the seat 12 , The deflection areas which are particularly stressed when entering and exiting 16 . 17 . 21 and 22 thus lie outside the most stressed area, causing the heating wire 11 spared and the function of seat heating 10 is guaranteed.

The deflection areas 16 . 17 . 21 and 22 are round, with the round transition areas 16 . 17 . 21 and 22 have a small radius of curvature.

The heating wire 11 leads from the side wall 13 in the transition area 14 and from there to the seating area 12 as well as up to the backrest 18 , From there it runs over the side wall 19 and finally over the backrest 18 , The heating wire 11 is symmetrical on the seat 12 and the backrest 18 arranged. Of course, those are also to the side cheeks 13 and 19 opposite side cheeks with the heating wire 11 Mistake. For reasons of clarity, however, only one side of this symmetrical arrangement is shown.

On the seat 12 and the backrest 18 is the heating wire 11 also arranged meandering, whereby a high heating effect of the seat heating 10 is achieved.

The heating wire 11 is on the side wall 13 glued on (see 2 ). The seat 12 and the side wall 13 are made of a foam. The same applies to the backrest 18 and the side wall 19 ,

In an alternative embodiment, a deflection region 23 a short section on, in contrast to the round transition areas 16 and 17 runs mostly straight and perpendicular to the longitudinal direction of the seat 12 running sections 15 is arranged (see 4 ).

Although at least one embodiment has been described in detail above, it goes without saying that nevertheless a large number of further embodiments exist. It should be emphasized that the at least one embodiment is not intended to limit the scope, scope or exact embodiment of the invention in any way. Instead, the foregoing description is intended to provide those skilled in the art with only a guide to implement at least one embodiment. Of course, many alternatives are possible with regard to the function and the arrangement of the elements described, without departing from the scope of the following claims.

LIST OF REFERENCE NUMBERS

10

Heated seats

11

heating wire

12

seat

13

side cheek

14

Transition area

15

section

16

deflection

17

deflection

18

backrest

19

side cheek

20

section

21

deflection

22

deflection

23

deflection

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 102005051738 A1 [0002]

Claims (13)

Seat heating ( 10 ) with a heating wire ( 11 ) for a motor vehicle seat with a seat surface ( 12 ) and a backrest ( 18 ), wherein the side of the seat ( 12 ) and the side of the backrest ( 18 ), Side cheeks ( 13 . 19 ), the heating wire ( 11 ) meandering on the side cheeks ( 13 . 19 ) and sections ( 15 . 20 ), each in the longitudinal direction of the seat ( 12 ) and the backrest ( 18 with the heating wire ( 11 ) Deflection areas ( 16 . 21 . 22 ) between each in the longitudinal direction of the seat ( 12 ) and the backrest ( 18 ) extending sections ( 15 . 20 ), which at least in the front end regions of the side cheeks ( 13 ) of the seat ( 12 ) and in the end regions of the side cheeks ( 19 ) of the backrest ( 18 ) are arranged. Seat heating ( 10 ) according to claim 1, wherein the deflection areas ( 17 . 23 ) of the heating wire ( 11 ) also in the rear end regions of the side cheeks ( 13 ) of the seat ( 12 ) or in an upward to the backrest ( 18 ) transition region ( 14 ) of the seat ( 12 ) are arranged. Seat heating ( 10 ) according to claim 1 or 2, wherein the deflection regions ( 23 ) have short rectilinear portions which are perpendicular to the respective longitudinal direction of the seat ( 12 ) and the backrest ( 18 ) extending sections ( 15 ) are arranged. Seat heating ( 10 ) according to claim 1 or 2, wherein the deflection regions ( 16 . 17 ) are formed around. Seat heating ( 10 ) according to claim 4, wherein the deflection areas ( 16 . 17 ) have a small radius of curvature. Seat heating ( 10 ) according to one of claims 2 to 5, wherein the heating wire ( 11 ) from the side cheeks ( 13 ) of the seat ( 12 ) also in the up to the backrest ( 18 ) transition region ( 14 ) and from there to the seat ( 12 ) and the backrest ( 18 ) leads. Seat heating ( 10 ) according to one of claims 1 to 6, wherein the heating wire ( 11 ) on the seat ( 12 ) and the backrest ( 18 ) is also arranged meandering. Seat heating ( 10 ) according to one of claims 1 to 7, wherein the heating wire ( 11 ) is glued to a foam molding the vehicle seat. Seat heating ( 10 ) according to one of claims 1 to 7, wherein the heating wire ( 11 ) is sewn into a seat cover. Seat heating ( 10 ) according to one of claims 1 to 9, wherein the heating wire ( 11 ) is made of stainless steel. Seat heating ( 10 ) according to one of claims 1 to 9, wherein the heating wire ( 11 ) is made of copper. Motor vehicle seat, where he the seat heating ( 10 ) according to one of claims 1 to 11. Motor vehicle, wherein it has the motor vehicle seat according to claim 12.

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