Vehicle seat

Abstract

The invention relates to a vehicle seat (9) having a decoupling module (10) for components of the vehicle seat (9) which are detachably connected to one another, at least comprising: a first locking unit (1) which is movably mounted in order to detachably lock the two components (7.1, 8.1) to one another in an initial state; a second locking unit (2) which is movably mounted in order to detachably lock the two components (7.2, 8.2) to each other in an initial state; and a pyrotechnically drivable drive unit (3), the two locking units (1, 2) and the drive unit (3) being designed and arranged in such a way that the two locking units (1, 2) are suddenly moved from an initial state, in particular in opposite directions, when the drive unit (3) is ignited, in order to decouple the two components (7.1, 7.2, 8.1, 8.2) in each case.

Description

Technical Field

[0001] The present invention relates to a vehicle seat, which particularly includes a seat component and a backrest. Background Technology

[0002] The height of a vehicle seat in a motor vehicle is typically adjustable by the occupant. It is also generally possible for the occupant to recline the entire vehicle seat to a certain extent. Furthermore, it is known that the occupant can adjust the tilt of the backrest and / or seat components. Therefore, the occupant can position the vehicle seat in a comfortable position for them.

[0003] However, this is related to the following drawback: in the event of an accident, the occupant will be in a position in which the safety systems, such as airbags and seat belts, are not ideally adjusted for the occupant in a comfortable position. Summary of the Invention

[0004] Therefore, the object of this invention is to provide a vehicle seat in which a safety system can better fulfill its safety functions.

[0005] A feasible solution for this purpose is provided by utilizing a vehicle seat having the features of the independent claim. Other solutions and advantageous improvements are described below and given in the dependent claims, wherein the features of the advantageous improvements can be combined with each other in a technically meaningful manner.

[0006] This objective is achieved, in particular, by a vehicle seat having a decoupling module for components that are detachably connected to each other for use in the vehicle seat, the vehicle seat comprising at least:

[0007] - A first locking unit that can movably support and, in the initial state, detachably locks the two components together.

[0008] - A second locking unit, which can be movably supported and, in the initial state, detachably locks two additional components to each other.

[0009] - A drive unit with a pyrotechnic drive mechanism, wherein two locking units and the drive unit are constructed and arranged in such a way that when the drive unit is ignited, the two locking units move suddenly from their initial state, preferably in opposite directions, so as to decouple the two components from each other.

[0010] The first component associated with the locking unit may be, for example, a seat rail, along which the seat components and backrest can be moved in the longitudinal direction of the vehicle. A component associated with another locking unit may be, for example, an element of an adjustment unit, which allows the orientation, position, and / or tilt of the seat components and / or backrest to be changed. Alternatively, the corresponding first component associated with the first and second locking units may be a component of the backrest and / or seat components, while the corresponding second component associated with the second locking unit is a component of the adjustment unit, which allows the tilt of the backrest relative to the seat components to be adjusted.

[0011] Therefore, the present invention is particularly directed to vehicle seats in which two components are locked independently of each other at two locations, and in which the locking is released when an accident is detected.

[0012] In other words, the present invention proposes, in its basic concept, to simultaneously bring out two locking units acting at different locations from their initial state of being connected to two components using exactly one drive unit, particularly one with a gas generator, so as to achieve relative movement between the two previously connected components. Therefore, it is not necessary to provide a separate drive unit for each locking unit, thus reducing the number of drive units required and eliminating the need to coordinate the triggering or ignition of multiple drive units in time.

[0013] In particular, a mechanism, such as a transmission mechanism, can be provided between the drive element driven by the pyrotechnic gas generator and the locking unit to convert the motion of the drive element into the motion of the two locking units. Specifically, the two locking units are arranged to move in parallel but opposite directions. The drive element is constructed and arranged such that it is accelerated by the gas generator for linear motion in the driving direction.

[0014] Therefore, in one embodiment, for example, at least one transmission element is constructed between the drive unit and each of the two locking units, the transmission element being particularly constructed as at least one rod or at least one rope. Here, the respective transmission element is directly connected to the respective locking unit.

[0015] The drive unit specifically includes a pyrotechnic gas generator and a drive element driven by the pyrotechnic gas generator. In order to construct a mechanism for transmitting the motion generated by the drive unit to the locking unit with as few components as possible, it is possible to configure the drive unit, in particular, to act directly on the transmission element connected to the locking unit with its drive element.

[0016] In particular, it is possible to configure the movement direction of the first locking unit and the second locking unit to be parallel to (or opposite to) the driving direction.

[0017] Therefore, in specific embodiments, for example, it is possible to configure a rigid drive element constructed as a rod to be mounted or supported at the housing of the drive unit, and a second locking element constructed as a rod connected to the second locking unit to abut against or be connected to the drive element, such that, especially when a corresponding stop is provided to limit the movement of the locking unit and / or the transmission element, the transmission element and thus the locking unit move in the opposite direction when the pyrotechnic gas generator is triggered.

[0018] In another specific embodiment, it is possible to configure a drive element or a transmission element that is directly accelerated in the driving direction by the drive element to be rotatably connected to two transmission elements (e.g., transmission elements configured as rods), which are in turn rotatably connected at their other ends to corresponding locking units, so that the two transmission elements move the locking units out of their initial state, wherein the movement of the locking units is particularly directed in opposite, parallel directions.

[0019] In another embodiment, a drive unit or its drive element can be configured to drive a rotatably supported transmission element, which is in turn connected to a locking unit via a transmission element. For example, a transmission element can be mounted on the rotatably supported transmission element on one side of the rotation axis of the rotatably supported transmission element, and another transmission element can be mounted on the rotatably supported transmission element on the opposite side of the rotation axis.

[0020] As an alternative, the movement directions of the first locking unit and the second locking unit can be orthogonally oriented to the driving direction of the driving unit.

[0021] Furthermore, it is possible to provide at least one, and preferably exactly one, spring that preloads both locking units into their respective initial states. This ensures that the locking units remain in their initial states until the drive unit is triggered. In this case, each locking unit can be equipped with a spring. However, it is preferable to provide a single spring that preloads both locking units into their respective initial states at least indirectly, for example, through a transmission element.

[0022] For ease of assembly or subsequent modification, it is possible to configure at least the first locking unit, the second locking unit, and the drive unit to be movably mounted on the module carrier when necessary. Therefore, the module carrier, and thus the decoupled module, can be easily assembled as a component of the vehicle seat. Attached Figure Description

[0023] The present invention and its technical environment are illustrated below with reference to the accompanying drawings. Wherein:

[0024] Figure 1 The illustration schematically shows a vehicle seat with a decoupled module in a comfortable position.

[0025] Figure 2 This illustration schematically shows the vehicle seat after the decoupling module is triggered in a safe position.

[0026] Figure 3 This schematically illustrates a first implementation of the decoupling module in its initial state.

[0027] Figure 4 schematically shown according to Figure 3 The implementation method is as follows after the drive unit is ignited.

[0028] Figure 5 This schematically illustrates a second implementation of the decoupling module in its initial state.

[0029] Figure 6 schematically shown according to Figure 5 The implementation method is as follows after the drive unit is ignited.

[0030] Figure 7 The diagram schematically illustrates a third implementation of the decoupling module in its initial state.

[0031] Figure 8 The fourth implementation of the decoupling module in its initial state is illustrated schematically, and

[0032] Figure 9 schematically shown according to Figure 8 The fourth embodiment refers to the situation after the drive unit is ignited. Detailed Implementation

[0033] exist Figure 1 The diagram schematically illustrates a vehicle seat 9, wherein the seat structure includes a seat component 13 and a backrest 14. The vehicle seat 9 includes a first seat rail, referred to as a first component 7.1, and a second seat rail, also referred to as a first component 7.2, to which the seat structure can be movably secured in a movable manner.

[0034] The vehicle seat 9 includes an adjustment unit 11, which allows the position of the seat component 13 and the backrest 14 to be changed. The adjustment unit 11 is indirectly connected to the first component 7.1 or the second component 7.2 via two second components 8.1 and 8.2 and by means of a decoupling module 10.

[0035] exist Figure 2 The image shows vehicle seat 9 in a safe position. Vehicle seat 9 is located from... Figure 1The comfortable position shown in the image is shifted to... Figure 2 In the safety position shown, the decoupling module 10 is triggered, as explained in detail below with reference to other accompanying drawings. By manipulating the decoupling module 10, the initial connection between the first component 7.1 and the second component 8.1, and the connection between the first component 7.2 and the second component 8.2, is released. This decoupling of the previously existing connections allows the second components 8.1 and 8.2 to move along the first components 7.1 and 7.2 in the longitudinal direction of the vehicle, thereby changing the tilt of the seat component 13 and the backrest 14 to such an extent that the occupant is upright.

[0036] As explained in more detail below, the vehicle seat 9 can thus be moved to a safe position by simply triggering the drive unit 3.

[0037] Figures 3 to 9 The decoupling module 10 shown includes a module carrier 6, and the components of the decoupling module 10 can be movably fastened to the module carrier when necessary.

[0038] The decoupling module 10 includes a first locking unit 1, which locks the first component 7.1 relative to the second component 8.1. Furthermore, the decoupling module 10 includes a second locking unit 2, which locks another first component 7.2 relative to another second component 8.2.

[0039] Therefore, locking units 1 and 2 each include a pin, which in Figure 3 , 5 In the initial state shown in 7 and 8, it extends into the corresponding gaps in the first members 7.1 and 7.2 and the second members 8.1 and 8.2.

[0040] In addition, the decoupling module 10 includes a drive unit 3, which includes a gas generator 3.3 and a drive element, which can be driven by the gas generator 3.3 in the drive direction 3.2.

[0041] Ignition of the gas generator 3.3 causes locking units 1 and 2 to move in opposite directions 12.1 and 12.2, respectively, allowing them to exit the gaps constructed in the first components 7.1 and 7.2. This achieves the desired state... Figure 4 , 6 As shown in Figures 9 and 1, in this state, the second components 8.1 and 8.2 are capable of moving along the first components 7.1 and 7.2. Therefore, only one drive unit 3, including the gas generator 3.3, is needed to simultaneously release the locking of the corresponding two components at both locations.

[0042] The only difference between the four implementations of the decoupling module 10 is the motion transmission method of the driving element 3.1 toward the first locking unit and the second locking units 1 and 2.

[0043] then, Figure 3 and Figure 4 The embodiment includes a rotatably supported transmission element 4.2, and the drive element 3.1 of the drive unit 3 is able to tilt the transmission element against the spring 5. The spring 5 thus preloads the two locking units 1 and 2 into their initial states. A rod for realizing the transmission element 4.1 is connected to the rotatably supported transmission element 4.2 on the side of the rotatably supported drive element 4.2 away from the drive unit 3, and this rod is also rotatably hinged to the first locking unit 1. Another rod, as the transmission element 4.1, is hinged to the rotatably supported transmission element 4.2 between the rotation axis of the transmission element and the drive unit 3, and this rod is rotatably hinged to the second locking unit 2.

[0044] By triggering the drive unit 3, the drive element 3.1 accelerates linearly along the drive direction 3.2, thereby tilting the rotatably supported transmission element 4.2, which in turn causes the locking units 1 and 2 to move out of their initial states via the rod 4.1 in opposite directions of motion 12.1 and 12.2.

[0045] In accordance with Figure 5 and Figure 6 In this embodiment, the transmission element 4.1, configured as a rod and connected to the locking units 1 and 2 respectively, is directly fastened to the drive unit 3 or loaded by the drive unit 3.1. Ignition of the gas generator 3.3 causes the drive element 3.1 to move in the drive direction 3.2, thereby causing the transmission element 4.1 to move in the opposite directions 12.1 and 12.2, which in turn causes the locking units 1 and 2 to move out of their initial state.

[0046] Figure 7 The implementation method basically corresponds to Figure 5 and Figure 6 In one embodiment, a spring 5 is additionally provided, which preloads the transmission element 4.1 and thus the first locking unit 1 and the second locking unit 2 into their initial states.

[0047] exist Figure 8 and Figure 9In this embodiment, the drive unit 3 is oriented such that the drive element 3.1, driven by the gas generator 3.3, is orthogonally oriented with respect to the movement directions 12.1 and 12.2 of the first locking unit 1 or the second locking unit 2. For this purpose, a transmission element 4.1, constructed as a rod, is mounted at the drive element 3.1 by a rotatable hinge and is also mounted at the locking unit 1 or 2 respectively. The locking units 1 and 2 are indirectly preloaded to their respective initial states by springs 5. Figure 8 By triggering the gas generator 3.3, the drive element 3.1 is accelerated in the drive direction 3.2, thereby the transmission element 4.1 pulls the corresponding locking unit 1 or 2 out of its corresponding initial state in the opposite direction of movement 12.1 and 12.2.

[0048] List of reference numerals in the attached diagram:

[0049] 1 First Locking Unit

[0050] 2 Second Locking Unit

[0051] 3 drive units

[0052] 3.1 Driving Components

[0053] 3.2 Driving Direction

[0054] 3.3 Gas Generator

[0055] 4.1 Rigid transmission elements

[0056] 4.2 Rotatably supported transmission elements

[0057] 5 springs

[0058] 6 Module Carrier

[0059] 7.1 First Component

[0060] 7.2 First Component

[0061] 8.1 Second Component

[0062] 8.2 Second Component

[0063] 9. Vehicle seats

[0064] 10 Decoupling Module

[0065] 11 Adjustment Unit

[0066] 12.1 Direction of motion of the first locking unit

[0067] 12.2 Direction of movement of the second locking unit

[0068] 13 Seat components

[0069] 14 Backrest

Claims

1. A vehicle seat (9) having a decoupling module (10) for components of the vehicle seat (9) that are detachably connected to each other, the vehicle seat comprising at least: - A first locking unit (1), which is movably supported so as to detachably lock the two components (7.1, 8.1) to each other in the initial state. - A second locking unit (2), which is movably supported so as to detachably lock the two components (7.2, 8.2) to each other in the initial state, and - A pyrotechnic-driven drive unit (3), wherein two locking units (1, 2) and the drive unit (3) are constructed and arranged in such a way that the two locking units (1, 2) suddenly move from their initial state, especially in opposite directions, when the drive unit (3) is ignited, so as to decouple the two components (7.1, 7.2, 8.1, 8.2) respectively.

2. The vehicle seat (9) according to claim 1, wherein, At least one transmission element (4.1, 4.2) is constructed between the drive unit (3) and the two locking units (1, 2), and the transmission element is particularly constructed as at least one rod (4.1) and / or at least one rope.

3. The vehicle seat (9) according to any one of the preceding claims, wherein, The drive unit (3) includes a pyrotechnic gas generator (3.3).

4. The vehicle seat according to any one of the preceding claims, wherein, The drive unit (3) acts directly on the transmission element (4) connected to the locking unit (1, 2).

5. The vehicle seat (9) according to any one of the preceding claims, wherein, The drive unit (3) includes a drive element (3.1) that can accelerate linearly in the drive direction (3.2).

6. The vehicle seat (9) according to claim 5, wherein, The movement directions (12.1, 12.2) of the first locking unit (1) and the second locking unit (2) are orthogonal to the driving direction (3.2).

7. The vehicle seat (9) according to claim 5, wherein, The movement directions (12.1, 12.2) of the first locking unit (1) and the second locking unit (2) are parallel to the driving direction (3.2).

8. The vehicle seat (9) according to any one of claims 5 to 7, wherein, The driving element (3.1) drives the rotatably supported transmission element (4.2), which is connected to the locking unit (1, 2) via the transmission element (4).

9. The vehicle seat (9) according to any one of the preceding claims, wherein, At least one spring (5) is provided, which preloads the two locking units (1, 2) into their initial state.

10. The vehicle seat (9) according to any one of the preceding claims, wherein, At least the first locking unit (1), the second locking unit (2) and the drive unit (3) are assembled on the module carrier (6).

11. The vehicle seat (9) according to any one of the preceding claims, wherein, The first locking unit (1) and the second locking unit (2) respectively lock and decouple the seat rail of the vehicle seat (9) as a first component (7.1, 7.2) from the adjustment unit (11) for the orientation of the vehicle seat (9) at least indirectly.

12. The vehicle seat (9) according to any one of the preceding claims, wherein, The vehicle seat moves into a safe position after the drive unit (3) is ignited.

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