Vehicle seat with an adjustable backrest for individual adaptation of the pelvic area to equipment worn by a seated person.

Abstract

The invention relates to a vehicle seat with an adjustment device (20) arranged in the pelvic area of ​​a backrest (14) for adapting the pelvic area of ​​the vehicle seat (10) to equipment (100) worn by a person (P) seated in the seat. The adjustment device (20) is integrated exclusively in the pelvic area of ​​the backrest (14) within a structure of the backrest (14), wherein the adjustment device (20) in the pelvic area of ​​the backrest (14) effects an individual adjustment of the pelvic area of ​​the vehicle seat (10) depending on the equipment (100) worn by the person (P).

Description

[0001] The invention relates to a vehicle seat with an adjustment device in the pelvic area of ​​a backrest.

[0002] Vehicle seats are known from the prior art that solve the problem of adapting the backrest of a vehicle seat to the back or the contour of the back of a person sitting in it. Exemplary contour adaptations of vehicle seats are described in the publications DE 10 2015 210 497 A1, DE 10 2006 016 899 A1 and DE 10 2013 021 862 A1.

[0003] It is a well-known problem in practice that individuals from institutions or security authorities, particularly emergency services, police, or fire departments, often wear multiple pieces of equipment on their belts. This equipment, along with the gear attached to the belt, remains in its designated position when they sit in a vehicle, making it difficult or even impossible for them to sit comfortably. The result is often tension in the torso, with particularly high stress on the sacroiliac joint. Removing the belt is generally not a viable option for safety reasons.

[0004] The object of the invention is therefore to create a vehicle seat that allows the carrying of equipment in the back area, in particular the carrying of equipment in the pelvic area, of a person sitting on the vehicle seat in a comfortable manner.

[0005] In one embodiment, a vehicle seat according to the invention comprises a seat part which has at least one upholstery part which forms a seat part mirror which is formed on a seat part central track between seat part side bolsters, wherein a person sitting on the seat sits with their buttocks on the seat part mirror.

[0006] The vehicle seat further comprises a backrest which - in a first embodiment - has only a single upholstery part which forms a backrest mirror on a backrest central track, which is formed between backrest side bolsters, wherein the backrest mirror forms a back-side and a pelvic-side contact surface for the back and pelvis of the person sitting on the vehicle seat.

[0007] The vehicle seat also includes an adjustment device that is integrated into a structure of the backrest exclusively in a pelvic area of ​​the backrest, whereby the adjustment device in the pelvic area of ​​the backrest causes the upholstery part to be individually adjusted into different positions.

[0008] The adjustment device makes it advantageously possible to individually achieve different positions of the padded part in the pelvic area of ​​the padded part, as follows: First: In a predefinable normal position, also known as the design position of the backrest, the pelvic-side contact surface of the upholstered part of the backrest forms a plane with the rear-side contact surface of the upholstered part of the backrest.

[0009] Secondly: The pelvic-side contact surface of the upholstered part of the backrest protrudes in a predefinable extended position relative to the posterior contact surface of the upholstered part of the backrest, on the pelvic side of the seated person. This creates a gap behind the seated person's back in the area of ​​the backrest. This gap is conveniently and comfortably closed by "rear, upper" equipment worn by the person above the waist in this back area.

[0010] Thirdly: The pelvic-side contact surface of the upholstered part of the backrest is positioned in a predetermined location relative to the rear-side contact surface of the upholstered part of the backrest, set back from the seated person's pelvis. This creates a space behind the seated person's pelvis in the pelvic area of ​​the backrest, in which "rear" equipment worn by the person below the waist in the rear pelvic area can be comfortably and advantageously accommodated.

[0011] In the first embodiment, the upholstery part is a backrest foam part, wherein at least one adjustment element, the adjustment device integrated exclusively into the structure of the backrest in the pelvic area, is arranged in an installation space.

[0012] The design is that the installation space is formed as a rear recess of the backrest foam part in the backrest foam part, or is provided behind the backrest foam part, or is formed as an inner recess of the backrest foam part in the backrest foam part as a cavity.

[0013] Furthermore, in a preferred adjustment variant of the first embodiment, it is provided that the adjustment element is connected to the backrest foam part, and starting from the normal position (design position), an adjustment mechanism of the adjustment device in the pelvic area, which is supported on a support structure of the backrest, causes the backrest foam part to bulge out or inward into the extended or retracted position, since the adjustment element is actively driven by the adjustment mechanism in both adjustment directions and the backrest foam part assumes the extended or retracted position.

[0014] In another preferred adjustment variant of the first embodiment, the adjusting element is a pneumatically reversibly inflatable air bladder located between the backrest foam section and the backrest support structure. Starting from the retracted position, in which the backrest foam section is curved by an external force acting on it, the air bladder can be inflated so that the normal position (design position) or the curved, extended position of the backrest foam section is actively reached in the pelvic area. The return adjustment of the backrest foam section is effected by the external force acting on the backrest foam section, exerted by the person sitting on the seat or by the "rear" equipment worn by the person sitting on the seat, which acts on a pressure-relieved air bladder. Second embodiment:

[0015] In a second embodiment, a vehicle seat according to the invention also comprises a seat part which has at least one upholstery part which forms a seat part mirror which is formed on a seat part central track between the seat part side bolsters, wherein a person sitting on the seat sits with their buttocks on the seat part mirror.

[0016] In the second embodiment, the backrest has a first and a second upholstery part, which form a backrest mirror on a backrest central track, which is formed between the backrest side bolsters, wherein the backrest mirror forms a back-side and a pelvic-side contact surface for the back and pelvis of the person sitting on the vehicle seat.

[0017] In the second embodiment, the vehicle seat also includes an adjustment device which is integrated into a structure of the backrest exclusively in a pelvic area of ​​the backrest, wherein the adjustment device in the pelvic area of ​​the backrest causes the second upholstery part to be individually adjusted to different positions relative to the first upholstery part.

[0018] Functionally, in both embodiments of the vehicle seat, it is advantageously possible to effect individually different positions of the upholstery part, in the second embodiment of the second upholstery part relative to the first upholstery part, by means of an adjustment device as follows: Firstly: In a predefinable normal position (design position), the pelvic-side contact surface of the second upholstery part of the backrest forms a plane with the back-side contact surface of the first upholstery part of the backrest. Secondly: The pelvic-side contact surface of the second upholstery part of the backrest protrudes in a predefinable extended position relative to the rear-side contact surface of the first upholstery part of the backrest on the pelvic side of the person sitting on it, so that a space is formed behind the back of the person sitting on it in a back area of ​​the backrest in which "rear" equipment worn by the person above a waist in the back area can be comfortably accommodated. Thirdly: The pelvic-side contact surface of the second upholstery part of the backrest is positioned in a predetermined position relative to the posterior-side contact surface of the first upholstery part of the backrest, set back from the pelvis of the person sitting on it, so that a space is created behind the pelvis of the person sitting on it in the pelvic area of ​​the backrest, in which "rear" equipment worn by the person below the waist in the posterior pelvic area can be comfortably accommodated.

[0019] In the second embodiment, it is preferably provided that the first upholstery part is a backrest foam part that exclusively forms the rear contact surface of the backrest, and the second upholstery part is a backrest foam element that exclusively forms the pelvic contact surface of the backrest, wherein at least the backrest foam element, together with the adjustment element of the adjustment device, is integrated into the structure of the backrest in an installation space below the backrest foam part.

[0020] Analogous to the first embodiment, in a first preferred adjustment variant of the second embodiment, the adjustment element is connected to the backrest foam element, and starting from the normal position (design position), the backrest foam part is extended or retracted by means of an adjustment mechanism of the adjustment device in the pelvic area, which is supported on a support structure of the backrest, since the adjustment element is actively driven by the adjustment mechanism in both adjustment directions and the backrest foam element assumes the extended or retracted position.

[0021] In another preferred adjustment variant, analogous to the first embodiment, the second embodiment provides that the adjustment element is a pneumatically reversibly inflatable air bladder arranged between the backrest foam element and the backrest support structure. Starting from the retracted position, in which the backrest foam element is retracted by an external force acting on it, the air bladder can be inflated so that the normal position (design position) or the extended position of the backrest foam element is actively approached in the pelvic area. The return adjustment of the backrest foam element is effected by the external force acting on the backrest foam element, exerted by the person sitting on the seat or by the "rear" equipment worn by the person sitting on the seat, which acts on a pressure-relieved air bladder.

[0022] In both embodiments, in each of the adjustment variants as well as in the first to third embodiment variants of the first embodiment, the embodiment variants of the first embodiment are explained in more detail in the following description, it can optionally be provided that the seat part side bolsters of the seat part and / or the backrest side bolsters of the backrest are formed outside the pelvic area of ​​the person sitting on it, so that a space is formed to the side of the pelvis of the person sitting on it, in which “lateral” equipment worn by the person below a waist in the lateral pelvic area can be comfortably accommodated.

[0023] In both embodiments, in each of the adjustment variants and the first to third embodiment variants of the first embodiment, the embodiment variants of the first embodiment are explained in more detail in the following description, it can optionally be provided that the adjustment device is combined with a lumbar adjustment device, which is also integrated into the backrest between the adjustment element and the support structure.

[0024] The invention is explained below with reference to the accompanying drawings. These show: Fig. 1. A buttocks and back area of ​​a person to illustrate the task in relation to equipment items located on a duty belt in the hip area of ​​a person and in the area of ​​a torso of the person; Fig. 2 a perspective view obliquely from above of a transition area between a seat part and a backrest of a vehicle seat and an adjacent center console, wherein the equipment of a person sitting on the vehicle seat has only a small space available in the transition area between a lower edge of the backrest and a rear edge of the seat part and in a lateral transition area of ​​the vehicle seat and in a back section adjoining a pelvic area of ​​the person, a backside cavity is formed by the equipment at the pelvic area of ​​the person sitting out. Fig. 3. A schematic cross-sectional view of a vehicle seat in an x / z plane to further clarify the problem and the associated task; Fig. 4 a vehicle seat according to the invention in a schematic sectional view in the x / z plane in a principal representation of a second embodiment according to the invention; Fig. 5 a conventional vehicle seat (left figure) and a vehicle seat according to the invention (right figure) to illustrate a technical detail according to the invention; Fig. 6. Adjust the vehicle seat (left illustration) according to the right illustration. Fig. 5 and a schematic representation (right figure) of a detail of the vehicle seat in relation to the arrangement of an adjustment device according to the invention; Fig. 7A a perspective view of a vehicle seat backrest according to Fig. 4 to further clarify the second embodiment; Fig. 7B an enlarged detail view (left image) of the backrest according to Fig. 7A and a sectional view of the detailed representation (right figure) to illustrate the design of the backrest according to the second embodiment; Fig. 7C an enlarged detail view of the right-hand image of the Fig. 7B to illustrate further design details of the backrest according to the second embodiment; Fig. 7D the adjustment device according to the Fig. 7B and Fig. 7C in a normal position, in a so-called design position in which a movable pelvic-side backrest mirror element and a rear-side backrest mirror element with their person-side contact surfaces are arranged in one plane; Fig. 7E the adjustment device according to the Fig. 7B and Fig. 7C in a retracted position in which the movable pelvic-side backrest mirror element and the rear-side backrest mirror element located above the pelvis are arranged with their person-side contact surfaces in different planes, thereby creating a space for equipment between the pelvic part of the person and the contact surface of the pelvic-side backrest mirror element; Fig. 7F the adjustment device according to the Fig. 7B and Fig. 7C in an extended position in which the movable pelvic-side backrest mirror element and the rear-side backrest mirror element located above the pelvis are arranged with their person-side contact surfaces in different planes, whereby the pelvic part of the person is slightly pushed forward and a space for equipment, in particular a space for a protective vest, is formed between the rear-side contact surface of the back part of the person and the contact surface of the rear-side backrest mirror element; Fig. 8 a perspective view (left figure) of a backrest of a vehicle seat in a general view and a schematic sectional view (right figure) in the x / z plane through the backrest of the vehicle seat of a first embodiment according to the invention; Fig. 9 a schematic sectional view in the x / z plane through a backrest of a vehicle seat in a principal representation of a second embodiment of the first embodiment according to the invention; Fig. 10 a schematic sectional view (right figure) in the x / z plane through a backrest of a vehicle seat in a general representation and a schematic representation of the state (left figure) of a foam of an adjustment device according to a third embodiment of the first embodiment according to the invention.

[0025] The Fig. Figure 1 shows the buttocks and back of a person P to illustrate the task in relation to equipment 100, which is located on a belt, in particular a duty belt, arranged in the hip area of ​​the upper body.

[0026] To clarify and describe the invention, the equipment items 100 in the hip area of ​​person P are differentiated into lateral “side” equipment items 100S arranged on the belt in the hip area and “rear” equipment items 100H arranged on the belt in the hip area.

[0027] The equipment 100 extends from the hip into the pelvic area of ​​person P, so that when person P sits down on a vehicle seat 10, there is a space requirement with regard to the equipment 100 which essentially affects the pelvic area of ​​person P.

[0028] A particularly space-consuming “lateral” piece of equipment 100S is a pistol positioned laterally in the hip area, which is carried by person P by means of a holster on the duty belt and also extends into the pelvic area of ​​person P.

[0029] Another piece of equipment 200 is a protective vest, which person P wears to protect their chest and back above the pelvis or pelvic area.

[0030] Fig. Figure 2 shows a perspective view obliquely from above of a transition area between a seat section 12 and a backrest 14 of a conventional vehicle seat 10' and an adjacent center console 30, wherein the equipment 100 of the person P now sitting on the vehicle seat 10 has only a small space available in a transition area between a lower edge of the backrest and a rear edge of the seat section and in a lateral transition area of ​​the vehicle seat between the backrest 14 and the seat section 12.

[0031] In a back section adjoining a pelvic area of ​​person P, a cavity H forms adversely on the pelvic side of the seated person P due to the "rear" equipment items 100H worn by person P.

[0032] To clarify the invention, the contact surface of the body part of person P, commonly referred to as the back, is divided into the pelvic region and the back region. The pelvic region extends from a joint between the seat part 12 and the backrest part 14 in the transition area between the seat part 12 and the backrest 14 up to a height – viewed in the vertical longitudinal extension of the backrest 14 – which, depending on the physique of the person P sitting on it, corresponds to approximately 1 / 5 of the total length of the backrest 14. Depending on this height and viewed across the entire width of the backrest 14, the pelvic region of person P is thus defined, forming a direct pelvic-side contact surface on the backrest 14, provided that person P is not wearing any equipment 100.

[0033] If person P is wearing the equipment items 100, the "rear" equipment items 100H form equipment-side contact surfaces, so that the pelvic-side contact surface of person P does not come into direct contact with the pelvic-side backrest mirror, which is formed below the rear-side backrest mirror.

[0034] The back of person P rests with its back-side contact surface against a back-side backrest mirror of the backrest 14 of the vehicle seat 10, provided that person P is not wearing a protective vest as equipment item 200.

[0035] If person P is wearing equipment item 200, the protective vest also forms an equipment-side contact surface, so that the back-side contact surface of person P does not come into direct contact with the back-side backrest mirror, which is formed above the pelvic-side backrest mirror.

[0036] The lateral areas of the pelvis of person P, which are also anatomically referred to as hips, form hip-side contact surfaces which, when person P is seated, usually come into contact with the side-side contact surfaces of the seat part 12 and / or the backrest 14 in the pelvic area of ​​person P, if person P is not wearing any lateral equipment 100S.

[0037] This direct attachment to the side-side contact surfaces of the seat part 12 and / or the backrest 14 is not formed if the person P, for example, according to Fig. 2 as a “side” piece of equipment 100S, for example, carries a pistol housed in a holster.

[0038] For example, it follows that Fig. 2 even the problem that the pistol slips past one of the seat side bolsters 12A, 12B into a gap between center console 30 and seat 12 and jams and / or damages the cover of the seat 12 and / or the surface of the center console 30.

[0039] Fig. Figure 2 further illustrates the hollow position of the back of the seated person P above the pelvis when the person P is wearing the equipment 100. As explained, the "rear" equipment 100H worn by the person P creates a hollow space H on the back side of the seated person P's pelvis, as shown below. Fig. 3 is addressed.

[0040] The Fig. Figure 3 shows a conventional 10' vehicle seat in a schematic sectional view in an x / z plane to further illustrate the problem and the associated task.

[0041] The pelvic and back areas are visible. As explained, the equipment item 100 creates the cavity H on the back side.

[0042] If person P wears the protective vest, the gap created by the "rear" equipment 100H between the back and the contact surface of the backrest panel is reduced, but only if person P is actually wearing the protective vest. With the protective vest worn as the rear, upper equipment 100H above person P's waist – but without rear equipment 100H below person P's waist – person P's pelvis is also adversely affected, shifting forward and raising relative to the seat section 12.

[0043] In principle, pressure points occur in the pelvic area of ​​person P and via the "rear" equipment items 100H in the area of ​​the pelvic-side backrest mirror.

[0044] Person P's pelvis is adversely shifted forward. This results in an incorrect posture for person P on vehicle seat 10', which is unergonomic and also adversely causes increased pressure on person P's back.

[0045] These disadvantages are eliminated by the solutions according to the invention in the following explanations.

[0046] Second embodiment with two upholstery parts: The Fig. Figure 4 shows a vehicle seat 10 according to the invention in a schematic sectional view in the x / z plane with a basic representation of a second embodiment according to the invention.

[0047] In the vehicle seat 10 according to the invention, it is provided that a backrest 14 is formed which includes an adjustable pelvic-side backrest mirror.

[0048] Furthermore, a pelvic-side adjustment device 20 is being developed, which will be explained below.

[0049] Is there an adjusting element 20.1; 20.2 (compare beforehand) Fig. 7A to 7F according to the second embodiment, and compare in advance Fig. 8, Fig. 9 and Fig. 10 according to the first embodiment) of the adjusting device 20 in a retracted state E (compare beforehand Fig. 7E), the free space F is created on the pelvic side, which is needed for the person P, who is carrying rear equipment 100H, in order to accommodate the “rear” equipment 100H in this free space F.

[0050] In other words, the vehicle seat 10 in the second embodiment has a movable pelvic-side backrest mirror element (second upholstery part) and a rear-side backrest mirror element (first upholstery part).

[0051] The movable pelvic-side backrest mirror element has the adjustment device 20, which includes a first adjustment element 20.1 and further components that will be discussed later.

[0052] The movable pelvic-side backrest mirror element and the rear-side backrest mirror element form the contact surfaces on a so-called backrest center track, which runs between the inner surfaces of the backrest side panels 14A, 14B of the backrest 14, wherein the inner surfaces of the backrest side panels 14A, 14B of the backrest 14 each border the backrest center track.

[0053] In this respect, the seat section 12 of the vehicle seat 10 also has a central section, in particular a seat section central section, which runs between the inner surfaces of the seat section side bolsters 12A, 12B of the seat section 12 and forms a seat section mirror on which a person P sits with their buttocks, wherein the inner surfaces of the seat section side bolsters 12A, 12B of the seat section 12 each border the seat section central section.

[0054] The Fig. Figure 5 shows again a conventional vehicle seat 10' (left figure) and a vehicle seat 10 according to the invention (right figure) to illustrate a technical detail according to the invention, which relates to the seat part side bolsters 12A, 12B of the seat part 12 and the backrest side bolsters 14A, 14B of the backrest 14.

[0055] In summary, the Fig. 5 and Fig. Figure 6 shows that the seat side bolsters 12A, 12B and / or the backrest side bolsters 14A, 14B have a contour which according to Fig. 6 creates “lateral” free space F’ in the transition area between the seat part 12 and a backrest 14 of the vehicle seat 10.

[0056] This provides more space, particularly in the lateral transition area, and especially creates more space towards an adjacent center console 30 if the seat section side bolsters 12A, 12B and / or the backrest side bolsters 14A, 14B are not formed in the transition area between seat section 12 and backrest 14.

[0057] See also Fig. 6, which the vehicle seat 10 (left illustration) according to the right illustration in Fig. 5 with the “lateral” clearances F’ for a “lateral” piece of equipment 100S, in particular the pistol in its holster, also illustrated.

[0058] Fig. 6; the right-hand figure shows in detail the vehicle seat 10 in relation to the arrangement of the adjustment device 20 according to the invention, which is arranged between the “lateral” free spaces F' in the area of ​​the pelvic region of person P and provides, as required, free space F for the “rear” equipment items 100H, as will be explained below.

[0059] In the area of ​​the backrest center track of the backrest 14, installation space is required for the adjustment device 20, which includes the adjustment element 20.1 and other components, whereby installation space is required on both sides of the adjustment element 20.1, as illustrated by the double arrows.

[0060] The Fig. Figure 7A shows a perspective view of a backrest 14 of the vehicle seat 10 according to Fig. 4 to further clarify the second embodiment, wherein the required installation space or spaces for accommodating the adjustment device 20 are created overall by the first upholstery part, which is shortened compared to a conventional vehicle seat 10', in particular by a shortened backrest foam part 14C in the area of ​​the backrest center section.

[0061] In other words, between the backrest side panels 14A, 14B (in the y-direction) of the backrest 14, a space B is created in the area of ​​the pelvis of the person P sitting on it. This space, for illustrative purposes only, has a height (in the z-direction) approximately 1 / 5 of the total length of the backrest 14. Depending on this height and across the entire width of the backrest 14, a corresponding depth (x-direction) of the backrest foam section 14C creates a three-dimensional space B behind the pelvis of the person P. According to the invention, this space at least partially forms the desired clearance F for the "rear" equipment 100H, as will be explained below.

[0062] The contours of the seat side panels 12A, 12B and the backrest side panels 14A, 14B are maintained in the remaining area, i.e., above the created free spaces F', in order to ensure lateral support for the seated persons P.

[0063] A rear boundary of the rear installation space B is provided, for example, by a layer of fleece 14D, which is arranged on the back of the backrest foam part 14C and extends into the area of ​​the installation space B.

[0064] The Fig. Figure 7B shows an enlarged detail view (left image) of the backrest 14 according to Fig. 7A and a sectional view of the detailed representation (right figure) to illustrate the design of the adjustment device 20 of the backrest 14 according to the second embodiment. Fig. 7C shows an enlarged detail view of the right-hand image of the Fig. 7B to illustrate further design details of the backrest 14 according to the second embodiment.

[0065] In summary, the Fig. 7B and Fig. Figure 7C shows that, firstly, within the installation space B and the free space F to be created according to the invention, the adjusting element 20.1 and the second upholstery part, in particular a backrest foam element 20.3, are arranged, wherein the backrest foam element 20.3 forms the pelvic-side contact surface with its front side.

[0066] With its back side, the backrest foam element 20.3 preferably rests against the front side of a rigid plate 20.4 for pressure distribution, the pressure being exerted by the first adjustment element 20.1, the front side of which rests against the back side of the plate 20.4, the plate being preferably made of plastic. The back side of the first adjustment element 20.1 rests against the front side of the nonwoven fabric 14D. In a preferred embodiment, a support structure 14E is located behind the nonwoven fabric 14D on its back side (see also Fig. 7C), which is connected to the structure of the backrest 14 (not shown), wherein in the exemplary embodiment a lumbar adjustment device 16 is provided to be arranged between fleece 14D and support structure 14E.

[0067] The backrest foam element 20.3 and the backrest foam part 14C can each be covered independently of each other. In other words, it is also possible to provide the backrest foam element 20.3 and the backrest foam part 14C with a shared cover.

[0068] Preferably, the adjusting element 20.1 is an air bladder that can be filled and emptied via a pneumatic valve block 20.5, so that different filling states (compare Fig. 7D to 7F) can be caused by the air bubble.

[0069] In a preferred embodiment of the invention, the lumbar support adjustment device 16 is also designed and operated with pneumatic air bubbles, wherein the air bubbles of the lumbar support adjustment device 16 for adjusting the backrest foam element 20.3 and the backrest foam part 14C are also fillable and deflatable and can also assume various filling states (not shown). The valve block 20.5 is advantageously provided with corresponding connections for both devices, so that the adjustment device 20 and the lumbar support adjustment device 16 can be operated via it. The valve block 20.5 is arranged either in the vehicle seat 10 or externally to the vehicle seat 10.

[0070] Depending on the respective filling state of the air bubble of the adjustment element 20.1, the backrest foam element 20.3 can be moved into different positions relative to the backrest foam part 14C, as illustrated below and explained in connection with the solution to the problem.

[0071] Fig. Figure 7D shows the adjustment device 20 according to the Fig. 7B and Fig. 7C in a normal position N (design position) in which a movable pelvic-side backrest mirror element in the type of backrest foam element 20.3 and a rear-side backrest mirror element in the type of backrest foam part 14C of the backrest center section of the backrest 14 with their person-side contact surfaces are arranged in one plane.

[0072] The Fig. 7E shows the adjustment device 20 according to the Fig. 7B and Fig. 7C in a retracted position E, in which the movable pelvic-side backrest mirror element in the type of backrest foam element 20.3 and the rear-side backrest mirror element located above the pelvis in the type of backrest foam part 14C with their person-side contact surfaces are arranged in different planes, whereby the space F for equipment, in particular the "rear" equipment item 100H, is formed between the pelvic part of the person P and the contact surface of the pelvic-side backrest mirror element.

[0073] The Fig. 7F finally shows the adjustment device 20 according to the Fig. 7B and Fig. 7C in an extended position A, in which the movable pelvic-side backrest mirror element, in the form of the backrest foam element 20.3, and the posterior-side backrest mirror element, located above the pelvis and in the form of the backrest foam part 14C, are arranged with their person-side contact surfaces in different planes. In particular, the backrest foam element 20.3 projects further forward in the x-direction compared to the backrest foam part 14C. This causes the pelvic area of ​​person P to be slightly shifted forward, creating a space F'' between the posterior contact surface of person P's back and the contact surface of the posterior-side backrest mirror element for equipment, for example, for the protective vest as an additional piece of equipment 200 (compare Fig. 4) trained.

[0074] A preferred embodiment with regard to a return adjustment of the backrest foam element 20.3 consists in the fact that, in the retracted position E of the backrest foam element 20.3 and the empty state of the air bladder (compare Fig. 7E) at least one elastic restoring element 20.7 is arranged between the support structure 14E and the backrest foam element 20.3, which has its shortest length when the air bladder is deflated. When the air bladder is inflated, the normal position N (design position) or the extended position A is set, as explained. The elastic restoring element 20.7, for example at least one rubber band, is tensioned so that after tensioning a restoring force is present which acts when the air bladder is partially or completely deflated, so that the return movement from the extended position A of the backrest foam element 20.3 via the normal position N (design position) to the retracted position E can be effected.

[0075] This design can be transferred to the embodiment variants of the first embodiment explained below, wherein the expandable return element 20.7 is then located in the adjustment range of the backrest foam part 14C (compare, for example, beforehand Fig. 8) is arranged between a support structure 14E and the backrest foam part 14C.

[0076] With the backrest foam element 20.3 in its extended position A, person P is pressed forward on the pelvic side, so that the posterior contact surface of person P's back is positioned at a distance from the contact surface of the posterior backrest mirror element when person P is seated on the vehicle seat 10 such that the contact surfaces are parallel. The protective vest, with its material thickness known from the design of the distance, advantageously fits into this space. In other words, the amount by which the backrest foam element 20.3 is shifted forward relative to the backrest foam part 14C beyond the plane of the backrest foam part 14C corresponds to the material thickness of the protective vest.The extended position A is advantageously set by the person P using the vehicle seat 10 if he is wearing a protective vest as equipment item 200 and no other “rear” equipment items 100H in the pelvic area.

[0077] The carrying of a “lateral” piece of equipment 100S, in particular the pistol described by way of example, is also advantageously possible, since it is provided that the “lateral” clearance F' of the seat part side wings 12A, 12B of the seat part 12 in the extended position A of the backrest foam element 20.3, in which the person P is extended forward in the x-direction, has a corresponding length in the longitudinal extension x-direction of the seat part side wings 12A, 12B.

[0078] First variant of the first embodiment with only one cushioning part: The Fig. Figure 8 shows a perspective view (left figure) of a backrest 14 of a vehicle seat 10 in a general representation and a schematic sectional view (right figure) in the x / z plane through the backrest 14 of the vehicle seat 10 of a first embodiment according to the invention.

[0079] The description of the first variant of the first embodiment is given using the same reference numerals for identical components.

[0080] It becomes clear that the free space F to be created (compare arrow in Fig. 8) for the “rear” equipment items 100H in the first embodiment variant is formed by providing or forming a rear recess 14H in the backrest foam part 14C on a rear side of the backrest foam part 14C facing away from person P, as installation space B for the adjustment device 20, in particular for the first adjustment element 20.1.

[0081] Therefore, in this first embodiment of the first design, the separate backrest foam element 20.3 in the pelvic area of ​​the backrest center section is omitted. The backrest foam part 14C thus forms both the rear contact surface and the pelvic contact surface of the backrest center section, with the pelvic contact surface being located in Fig. 8 in neutral position N according to Fig. Figure 7D shows when the air bubble holds the foam of the backrest foam part 14C in a position where the back-side contact surface and the pelvic-side contact surface of the backrest center panel form a plane.

[0082] By filling the air bubble, the backrest foam part 14C in the pelvic area of ​​person P is pushed out by filling the air bubble, i.e., bulged out, whereby the effect (extended position A of the backrest foam part 14C or filled state of the air bubble) according to Fig. 7F is reached, while emptying the air bubble leads to the effect (retracted position E of the backrest foam part 14C or deflated state of the air bubble) according to Fig. 7E, in which the backrest foam section 14C in the pelvic area of ​​person P yields due to the deflated air bladder as soon as the "rear" equipment 100H on person P exerts a force on the backrest foam section 14C in the area of ​​the pelvic contact surface when person P sits down on the vehicle seat 10. The backrest foam section 14C is thus indented / pressed in by the acting force, so that the free space F is formed.

[0083] As already mentioned in principle, with regard to a return adjustment of the backrest foam part 14C, it is possible that, in the retracted position E of the backrest foam part 14C and the deflated state of the air bladder, at least one expandable return element 20.7 (compare Fig. 8) is arranged between the support structure 14E and the backrest foam section 14C, which, when the air bladder is deflated, has its shortest length or a predetermined position, wherein the shortest length or predetermined position of the return element 20.7 ensures that the deflated air bladder is forced into the retracted position E and carries the backrest foam section 14C with it. When the air bladder is inflated, as already explained, the normal position N (design position) or the extended position A is achieved. The expandable return element 20.7 For example, at least one rubber band (connected to the backrest foam part 14C and the support structure 14E) is tensioned so that after tensioning a restoring force is present which acts when the air bubble is partially or completely deflated, so that the return from the extended position A of the backrest foam part 14C via the normal position N (design position) to the retracted position E can be effected.

[0084] Second variant of the first embodiment with only one cushioning part: The Fig. Figure 9 shows a schematic sectional view in the x / z plane through a backrest 14 of a vehicle seat 14 with a basic representation of a second embodiment according to the invention.

[0085] The description of the second variant of the first embodiment is given using the same reference numerals for identical components.

[0086] It becomes clear that the free space F (compare arrow in Fig. 9) for the “rear” equipment items 100H in the second embodiment, a front recess 14V is formed in the backrest foam part 14C on a side of the backrest foam part 14C facing person P. The front recess 14V is designed as a profile section and, unlike the first embodiment, forms a contour in the backrest foam part 14C that creates the free space F when the air bubble, i.e., the adjusting element 20.1, is in an emptied state and thus the backrest foam part 14C is in a retracted position E according to Fig. 7E.

[0087] Therefore, in this second embodiment variant of the first embodiment, the separate backrest foam element 20.3 in the pelvic area of ​​the backrest central section is also omitted.

[0088] The backrest foam section 14C thus forms both the back-side contact surface and the pelvic-side contact surface of the backrest center panel, with the pelvic-side contact surface in Fig. 9 in the retracted position E according to Fig. 7E is shown when the air bubble holds the foam of the backrest foam part 14C in a position where the back-side contact surface and the pelvic-side contact surface of the backrest center panel, i.e., of the backrest foam part 14C, do not form a plane, so that the free space F according to the illustration in Fig. 9 is available.

[0089] Further filling of the air bubble pushes the backrest foam part 14C out in the pelvic area of ​​person P, thereby achieving the effect (neutral position N of the backrest foam part 14C or at least partially filled state of the air bubble) according to Fig. 7D is achieved by pushing the backrest foam part 14C forward into the neutral position N in the pelvic area, so that the back-side contact surface and the pelvic-side contact surface of the backrest center track, i.e., of the backrest foam part 14C, now form a plane.

[0090] If the air bubble is filled further, the pelvic-side contact surface of the backrest center section, i.e., of the backrest foam section 14C, is pressed further forward into the extended position A, so that the pelvic-side contact surface of the backrest center section protrudes compared to the posterior-side contact surface of the backrest center section, so that the effect (extended position A of the backrest foam section 14C or fully filled state of the air bubble) according to Fig. 7F is achieved, in which a protective vest is used as equipment 200 in the Fig. 7F depicted area of ​​the backrest foam part 14C above the pelvic area in the free space F'' (compare Fig. 4 and Fig. 7F) space.

[0091] Partial or complete deflation of the air bubble leads to the effects described below. Fig. 7D and Fig. 7E, in which the backrest foam part 14C gives way in the pelvic area of ​​person P as soon as the “rear” equipment items 100H on person P exert a force on the backrest foam part 14C in the area of ​​the pelvic contact surface when person P sits down on the vehicle seat 10 in the pelvic area.

[0092] Third variant of the first embodiment with only one cushioning part: The Fig. Figure 10 shows a schematic sectional view (right figure) in the x / z plane through a backrest of a vehicle seat in a general representation and a schematic representation of the state (left figure) of a foam part provided as a second adjusting element 20.2 of an adjusting device 20 according to the third embodiment according to the invention.

[0093] The description of the third variant of the first embodiment is given using the same reference numerals for identical components.

[0094] It becomes clear that the free space F (compare arrow in Fig. 10) for the “rear” equipment items 100H in the third version variant is formed by providing an inner recess 14l in the form of a cavity as installation space B for a second adjustment element 20.2 in the backrest foam part 14C.

[0095] In the inner recess 14l, according to the other embodiment variants, either an air bubble is arranged as a first adjusting element 20.1 or, in a preferred embodiment, a second adjusting element 20.2 in the form of a foam part provided with a flexible airtight covering.

[0096] Therefore, in this third embodiment variant of the first embodiment, the separate backrest foam element 20.3 in the pelvic area of ​​the backrest central section is also omitted.

[0097] The backrest foam section 14C thus forms both the back-side contact surface and the pelvic-side contact surface of the backrest center panel, with the pelvic-side contact surface in Fig. 10 in the neutral position N according to Fig. Figure 7D shows the foam part (or an air bubble) inside the recess 14l holding the backrest foam part 14C in the pelvic area in a position where the back-side contact surface and the pelvic-side contact surface of the backrest center panel form a plane. There is still no free space F for "rear equipment" 100H.

[0098] Only when the foam section (or air bubble) is emptied into the retracted state or position E of the backrest foam section 14C, whereby the foam section (or air bubble) is fluidically connected to a unit 20.6 (not shown) for generating positive and negative pressure, does a negative pressure in the foam section (or air bubble) lead to the effect (retracted position E of the backrest foam section 14C or emptied state of the air bubble) according to 7E, in which the backrest foam section 14C yields in the pelvic area of ​​person P as soon as the "rear" equipment 100H on person P exerts a force on the backrest foam section 14C in the area of ​​the pelvic contact surface when person P sits down on the vehicle seat 10. The free space F is available in the pelvic area to accommodate the "rear" equipment 100H.

[0099] When the foam part is filled to the extended state A or to the extended position A of the backrest foam part 14C, in which the foam part is integrated, an overpressure in the foam part leads to the effect (extended position A of the backrest foam part 14C or fully filled state of the air bladder) according to 7F, in which the backrest foam part 14C is pushed out in the pelvic area of ​​person P, so that a protective vest as equipment item 200 in the Fig. 7F depicted area of ​​the backrest foam part 14C above the pelvic area the free space F'' (compare Fig. 4 and Fig. 7F). Reference symbol list 10' vehicle seat (state of the art) 10 vehicle seats P Person 100 pieces of equipment 100S side equipment 100H rear equipment 200 additional equipment items 12 Seat section 12A, 12B Seat section side bolsters 14 Backrest 14A, 14B Backrest side panels 14C Backrest foam section 14D nonwoven fabric 14E Support structure 14F phase 14H rear recess 14V front recess 14l inner recess 16 lumbar support adjustment device 20 Adjustment device 20.1 first adjustment element 20.2 second adjusting element 20.3 Backrest foam element 20.4 Pressure distribution plate 20.5 Valve block 20.6 aggregate 20.7 Reset element 30 Center console B Construction space H cavity F Clearance for equipment 100H (poolside behind person P) F' Clearance for equipment 100S (to the side of person P) F'' Clearance for equipment 100H (backside behind person P) N Normal position (design position) A extended position E locked position x usual direction of travel of a vehicle y horizontal direction perpendicular to the direction of travel z vertical direction perpendicular to the direction of travel QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2015 210 497 A1

[0002] DE 10 2006 016 899 A1

[0002] DE 10 2013 021 862 A1

[0002]

Claims

[1] vehicle seat (10) comprising - a seat part (12) comprising at least one upholstered part forming a seat part mirror, which is formed on a seat part central track between seat part side bolsters (12A, 12B), wherein a seated person (P) sits with their buttocks on the seat part mirror, - a backrest (14) comprising a cushioning element forming a backrest mirror on a backrest central section, which is formed between backrest side bolsters (14A, 14B), wherein the backrest mirror forms a back-side and a pelvic-side contact surface for the back and pelvis of the person (P) sitting on the vehicle seat (10), - an adjustment device (20) which is integrated into a structure of the backrest (14) exclusively in a pelvic area of ​​the backrest (14), wherein the adjustment device (20) in the pelvic area of ​​the backrest (14) causes the upholstery part to be individually adjusted into different positions (N, A, E), wherein - the pelvic-side contact surface of the upholstered part of the backrest (14) in a predefinable normal position (N) forms a plane with the posterior-side contact surface of the upholstered part of the backrest (14), or - the pelvic-side contact surface of the upholstered part of the backrest (14) in a predefinable extended position (A) protrudes towards the pelvic side of the seated person (P) relative to the posterior contact surface of the upholstered part of the backrest (14), so that a space (F'') is formed behind the back of the seated person (P) in a back area of ​​the backrest (14) in which equipment (200) worn by the person (P) above a waist in the back area can be comfortably accommodated, or - the pelvic-side contact surface of the upholstered part of the backrest (14) is set back in a predefinable position (E) relative to the posterior-side contact surface of the upholstered part of the backrest (14) on the pelvic side of the person sitting (P), so that a space (F) is formed behind the pelvis of the person sitting (P) in the pelvic area of ​​the backrest (14), in which equipment (100H) worn by the person (P) below a waist in the posterior pelvic area can be comfortably accommodated. [2] vehicle seat (10) comprising - a seat part (12) comprising at least one upholstered part forming a seat part mirror, which is formed on a seat part central track between seat part side bolsters (12A, 12B), wherein a seated person (P) sits with their buttocks on the seat part mirror, - a backrest (14) comprising a first and a second upholstery part, which form a backrest mirror on a backrest central track, which is formed between backrest side bolsters (14A, 14B), wherein the backrest mirror forms a back-side and a pelvic-side contact surface for the back and pelvis of the person (P) sitting on the vehicle seat (10), - an adjustment device (20) which is integrated into a structure of the backrest (14) exclusively in a pelvic area of ​​the backrest (14), wherein the adjustment device (20) in the pelvic area of ​​the backrest (14) causes the second upholstery part to be individually adjusted into different positions (N, A, E), wherein - the pelvic-side contact surface of the second upholstery part of the backrest (14) in a predefinable normal position (N) forms a plane with the posterior-side contact surface of the first upholstery part of the backrest (14), or - the pelvic-side contact surface of the second upholstery part of the backrest (14) in a predefinable extended position (A) protrudes towards the pelvic side of the seated person (P) relative to the posterior contact surface of the first upholstery part of the backrest, so that a space (F'') is formed behind the back of the seated person (P) in a back area of ​​the backrest (14) in which equipment (200) worn by the person (P) above a waist in the back area can be comfortably accommodated, or - the pelvic-side contact surface of the second cushion part of the backrest (14) is set back in a predefinable position (E) relative to the posterior-side contact surface of the first cushion part of the backrest (14) on the pelvic side of the person (P), so that a space (F) is formed behind the pelvis of the person (P) in the pelvic area of ​​the backrest (14), in which rear equipment (100H) worn by the person (P) below a waist in the posterior pelvic area can be comfortably accommodated. [3] Vehicle seat (10) according to claim 1 or 2, characterized by, that the seat section side bolsters (12A, 12B) of the seat section (12) and / or the backrest side bolsters (14A, 14B) of the backrest (14) are formed outside the pelvic area of ​​the person (P) sitting on the seat, so that a space (F') is formed laterally to the pelvis of the person (P) sitting on the seat, in which lateral equipment items (100S) worn by the person (P) below a waist in the lateral pelvic area can be comfortably accommodated. [4] Vehicle seat (10) according to claim 1, characterized by , that the upholstery part is a backrest foam part (14C), wherein at least one adjustment element (20.1), the adjustment device (20) integrated exclusively in the pelvic area of ​​the backrest (14) into the structure of the backrest (14), is arranged in a construction space (B), - which is designed as a rear recess (14H) of the backrest foam part (14C) in the backrest foam part (14C) or - which is provided behind the backrest foam part (14C) or - which is formed as an inner recess (14l) of the backrest foam part (14C) in the backrest foam part (14C) as a cavity. [5] Vehicle seat (10) according to claim 2, characterized by , that the first upholstery part is a backrest foam part (14C) that exclusively forms the rear contact surface of the backrest (14) and the second upholstery part is a backrest foam element (20.3) that exclusively forms the pelvic contact surface of the backrest (14), wherein at least the backrest foam element (20.3) together with the adjustment element (20.1), the adjustment device (20) which is exclusively integrated into the structure of the backrest (14) in the pelvic area of ​​the backrest (14), are arranged in a construction space (B) below the backrest foam part (14C). [6] Vehicle seat (10) according to claim 4, characterized by, that the adjusting element (20.1) is connected to the backrest foam part (14C), and starting from the normal position (N) by means of an adjusting mechanism of the adjusting device (20) which is supported on a support structure (14E) of the backrest (14) in the pelvic area, an extension or inward curvature of the backrest foam part (14C) into the extended or retracted position (A, E) takes place, since the adjusting element (20.1) is actively driven by the adjusting mechanism in both adjustment directions and the backrest foam part (14C) assumes the extended or retracted position (A, E). [7] Vehicle seat (10) according to claim 5, characterized by, that the adjustment element (20.1) is connected to the backrest foam element (20.3), and starting from the normal position (N) by means of an adjustment mechanism of the adjustment device (20) which is supported on a support structure (14E) of the backrest (14) in the pelvic area, the backrest foam part (14C) is extended or retracted, since the adjustment element (20.1) is actively driven by the adjustment mechanism in both adjustment directions and the backrest foam element (20.3) assumes the extended or retracted position (A, E). [8] Vehicle seat (10) according to claim 4, characterized by, that the adjusting element (20.1) is a pneumatically reversibly inflatable air bladder which is arranged between the backrest foam part (14C) and the support structure (14E) of the backrest (14), and is inflatable from the retracted position (E) in which the backrest foam part (14C) is curved by an external force acting on the backrest foam part (14C), so that in the pelvic area the normal position (N) or the curved extended position (A) of the backrest foam part (14C) is actively approached, while the return adjustment of the backrest foam part (14C) is effected by the external force acting on the backrest foam part (14C) by the person sitting on it (P) or by the rear equipment (100H) worn by the person sitting on it (P), which acts on a pressure-relieved air bladder. [9] Vehicle seat (10) according to claim 5, characterized by, that the adjusting element (20.1) is a pneumatically reversibly inflatable air bladder, which is arranged between the backrest foam element (20.3) and the support structure (14E) of the backrest (14), and is inflatable from the retracted position (E), in which the backrest foam element (20.3) is retracted by an external force acting on the backrest foam element (20.3), so that in the pelvic area the normal position (N) or the extended position (A) of the backrest foam element (14C) is actively approached, while the return adjustment of the backrest foam element (14C) is effected by the external force acting on the backrest foam element (20.3) by the person sitting (P) or by the rear equipment (100H) worn by the person sitting (P), which acts on a pressure-relieved air bladder. [10] Vehicle seat (10) according to any of the preceding claims, characterized by, that the adjustment device (20) is combined with a lumbar adjustment device (16) in the structure of the backrest (14), wherein the lumbar adjustment device (16) is also integrated into the backrest (14) between the adjustment element (20.1) of the adjustment device (20) and the support structure (14E).

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