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DE-102024200679-B4 - Backrest assembly of a belt-integrated seat with an integrated belt retractor module

DE102024200679B4DE 102024200679 B4DE102024200679 B4DE 102024200679B4DE-102024200679-B4

Abstract

Backrest assembly of a seatbelt integral seat, comprising a first assembly having backrest side rails (10, 20) between which a front backrest head plate (40) is fixedly arranged, wherein the backrest assembly comprises a second assembly designed as a prefabricated belt retractor module, wherein the belt retractor module has a rear backrest head plate (71) and at least one receptacle, wherein the belt retractor module has, on its inner surface facing a front backrest head plate (40) of the first assembly in an assembled state of the backrest assembly, the at least one receptacle in which a belt retractor is reversibly arranged, wherein the belt retractor module is integrated in an installation space formed in the first assembly in the assembled state, which is bounded by the backrest side rails (10, 20) and the front backrest head plate (40), wherein the belt retractor module is reversibly inserted into the installation space from a rear side of the backrest. is inserted, wherein the rear backrest head plate (71) of the belt retractor module is fixedly connected to the front backrest head plate (40) or the front backrest head plate (40) and the backrest side rails (10, 20) by a first connecting group.

Inventors

  • Arne Stahl
  • Michael Przybyla

Assignees

  • VOLKSWAGEN AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20240125

Claims (11)

  1. Backrest assembly of a seatbelt integral seat, comprising a first assembly having backrest side rails (10, 20) between which a front backrest head plate (40) is fixedly arranged, wherein the backrest assembly comprises a second assembly designed as a prefabricated belt retractor module, wherein the belt retractor module has a rear backrest head plate (71) and at least one receptacle, wherein the belt retractor module has, on its inner surface facing a front backrest head plate (40) of the first assembly in an assembled state of the backrest assembly, the at least one receptacle in which a belt retractor is reversibly arranged, wherein the belt retractor module is integrated in an installation space formed in the first assembly in the assembled state, which is bounded by the backrest side rails (10, 20) and the front backrest head plate (40), wherein the belt retractor module is reversibly inserted into the installation space from a rear side of the backrest. is inserted, wherein the rear backrest head plate (71) of the belt retractor module is fixedly connected to the front backrest head plate (40) or the front backrest head plate (40) and the backrest side rails (10, 20) by a first connecting group.
  2. Backrest assembly according to Claim 1 , characterized in that the front backrest head plate (40) has a three-dimensional u-shaped form to create the installation space, wherein a substantially flat surface of the front backrest head plate (40) is orthogonally bounded by upper and lower elements arranged at each end of the backrest head plate (40) in the assembled state.
  3. Backrest assembly according to at least one of the preceding claims, characterized in that the front backrest head plate (40) forms a groove (41) in an upper end region of the U-shaped shape of an angled edge (43) and in a lower end region of the U-shaped shape, the groove forming a top surface whose horizontal surface in the installed state runs parallel to a horizontal surface in the installed state of a bottom surface of the angled upper edge (43), wherein the area above the groove (41) formed, essentially flat and vertically arranged front backrest headplate (40) forms a vertical surface between the underside of the rim (43) and the top of the groove (41).
  4. Backrest assembly according to at least one of the preceding claims, characterized in that the three-dimensional u-shaped shape of the front backrest head plate (40) is orthogonally limited by elements arranged laterally at each end of the front backrest head plate (40) in the assembled state.
  5. Backrest assembly according to at least one of the preceding claims, characterized in that the laterally arranged elements are angled side plates whose three-dimensional contours correspond to the contours of the backrest side rails (10, 20) pointing towards the side plates in such a way that the side plates fit snugly against the inner surfaces of the backrest side rails (10, 20) in the assembled state.
  6. Backrest assembly according to Claim 1 , characterized in that the belt retractor module is connected by the first connection group to the backrest side rails (10, 20) and the front backrest head plate (40), wherein the connection is made by two screw connections (S1) which connect lateral folds (73) of the rear backrest head plate (71) to the backrest side rails (10, 20) and the front backrest head plate (40) embedded in the backrest side rails (10, 20) in a positionally fixed manner.
  7. Backrest assembly according to Claim 3 , characterized in that the belt retractor module is connected to the front backrest head plate (40) by a second connection group by means of screw connections (S2), which connect a lower flange (74) of the rear backrest head plate (71) to the groove (41) of the front backrest head plate (71).
  8. Backrest assembly according to at least one of the preceding claims, characterized in that receiving and stabilizing plates (75) and a receiving and stabilizing cage (76) are arranged on an inner surface of the rear backrest head plate (71) for stabilizing the rear backrest head plate (71) and for receiving several belt retractor units (1, 2, 3) of the belt retractor.
  9. Backrest assembly according to Claim 8 , characterized in that the at least one receiving of the second assembly is detachably connected to the front backrest head plate (40) by means of a third connecting group by means of screw connections (S3) which penetrate the receiving and stabilizing plates (75) and the receiving and stabilizing cage (76).
  10. Backrest assembly according to Claim 1 , characterized in that the belt retractor module is connected to the front backrest head plate (40) by a fourth connection group, wherein screw connections (S4) connect an upper flange (72) of the rear backrest head plate (71) to a flange (43) of the front backrest head plate (40).
  11. Integrated belt seat, characterized by a backrest assembly according to at least one of the Claims 1 until 10 .

Description

The invention relates to a backrest assembly of a belt-integrated seat, comprising a first assembly having backrest side rails between which at least one backrest head plate is arranged in a fixed position. The printed matter DE 11 2018 006 209 B4 This document describes a vehicle seat, in particular a motor vehicle seat, comprising a seat section arranged on a seat base and a backrest pivotably arranged on the seat section or the seat base by means of a backrest fitting about a backrest pivot axis. The vehicle seat has a three-point safety belt, the safety belt being guided through a belt exit located in the upper lateral area of the backrest. It is disclosed that a vehicle seat according to a first embodiment is equipped with a belt retractor in the area of the backrest and an additional load belt. The belt retractor preferably includes a belt tensioner. The belt retractor associated with the safety belt securing the user is located in the upper backrest area. The printed matter DE 10 2020 110 594 A1 This describes a seat assembly with integrated seat belt restraint. A seat back assembly includes a seat back frame having a first and a second side element that define a backrest support section of the seat back frame. An upper frame element connects the first and second side elements of the seat back frame to define a headrest support section of the seat back frame. An upper mounting plate is coupled to the upper frame element. A retaining bar is coupled to the upper mounting plate. A retractor mechanism is operatively coupled to the backrest support section of the seat back frame. A mounting bracket is operatively coupled to the seat back frame. A seat belt includes a webbing with a first section that is operatively coupled to the retractor mechanism and extends from it within an interior space of the seat back assembly toward the retaining bar. A second section of the webbing extends within the interior space of the seat back assembly from the retaining bar to the mounting bracket. The vehicle seats described in the publications are integrated seat belt seats, which combine all desired seat functions, including the function of a seat belt. Integrated seat belt seats can be removed from a vehicle and installed as a complete unit. In integrated seat belt seats, the backrest is attached to the seat frame or the seat base. The integrated seat belt seat includes a seat belt assembly with a belt retractor, also known as a belt retractor. Two different designs are known from the prior art. The belt retractor is either located in the backrest and is primarily associated with the shoulder belt, or it is located in the seat base, particularly in a rear lateral area of the seat base, or in a seat section supported by the seat base. The present invention relates to a belt-integrated seat comprising a seat section and a backrest, which is equipped with a three-point safety belt, wherein the safety belt exits in a belt exit located in the upper lateral area of the backrest (compare in advance the 1E and 3 ) by means of a belt deflection element 30 (compare 1D and 2D ) is redirected. For example, a seat belt webbing is in a belt retractor unit 3 (compare beforehand the 1E and 2E) The seat belt is stored in the backrest. The seat belt (not shown) is fixed by means of a belt end fitting to a structure on the seat section, seat base, or backrest of the integrated seat, near the transition from the lower end of the backrest to the rear end of the seat section. The seat belt can also be fastened by means of a buckle to a buckle attachment point, which is located on the side of the integrated seat opposite the belt end fitting, also near the transition from the lower end of the backrest to the rear end of the seat section. The seat belt is essentially divided into two sections: the lap belt between the belt end fitting and the closed buckle, and the shoulder belt between the closed buckle and the belt exit point. The seat belt thus runs in the first section, designated as the shoulder belt, from the belt retractor 3, past the belt exit, to a buckle. After being deflected at the buckle, the seat belt continues in the second section, designated as the lap belt, to the belt end fitting. In order for the shoulder belt to exit from the belt retractor 3 through the belt exit in the upper lateral area of the backrest, the technical requirement is to integrate the belt retractor 3 into the limited installation space available in the backrest in such a way that not only does the belt retractor 3 itself fit, but the structure of the backrest with the integrated belt retractor 3 also possesses sufficient stability to withstand the belt forces, particularly in the event of a crash (load). (fall), can accommodate. The belt retractor unit 3 is assigned a belt tensioner unit 2 and a drive unit 1. In the present embodiment, the units are arranged side by side in a longitudinal configuration, as in 2E This becomes clear. The aforementioned be