CZ2014262A3 - Car seat, assembly procedure of the car seat and car seat fittings assembly - Google Patents

Abstract

More particularly, the invention relates to a car seat with the so-called EASY-ENTRY function, which has at least the following structure: a seat frame which can be adjusted in the longitudinal direction; adjusting device for longitudinal adjustment of the seat; a backrest (R) is pivoted on the seat frame by means of the seat fittings (B); a locking device (V) for arresting the backrest (R) in the operating position, the arresting device (V) having a locking element (1) and a locking element (5). The locking element (1) is engaged with the locking element (5) in order to lock the backrest (R) and can be disengaged from the locking element (5) in order to fold the backrest (R) in the direction of the seat surface of the seat support frame; a coupling mechanism (2, 6) for connecting the locking device (V) to the adjusting device, the connecting mechanism (2, 6) having at least one locking element (V) connected to the driving element (2) and the driving element (2) at tilting the backrest (R) acts on the interlocking element (6) so that it releases when the backrest (R) is tilted. Within the meaning of the invention, a solution is also provided that the locking device (1) and the driving element (2) are arranged on the same side of the seat fitting (B). The following describes how to assemble the car seat, where the car seat can optionally be equipped with different seat fittings (B, B *) as well as seat fittings for the car seat.

Description

Car seat, car seat assembly procedure and seat fittings

PV2O1Š- 2C2

Field of technology

The invention relates in particular to a vehicle car seat according to the first claim, which is provided with a so-called Easy-Entry function, as well as to a process for assembling a vehicle car seat according to claim 13 and a seat fitting according to claim 16.

Prior art

In the case of vehicle seats with an easier boarding function, it is provided that the backrest of the vehicle car seat can be folded forward in the direction of the car seat seat in order to make it easier to get in and out of the vehicle, while at the same time allowing longitudinal adjustment of the car seat. The backrest is in principle mounted on the seat frame of the car seat by means of a seat fitting, so that the inclination of the backrest can be adjusted to a certain operating position, and the backrest can be tilted from a given operating position. A locking-locking device is usually provided on such a seat metal, by means of which the backrest is locked in the operating position and by means of which the backrest can be released in order to fold in the direction of the seat. Such a locking device is to be arranged in such a way that, even in the event of a frontal collision, the backrest is kept in a defined position relative to the seat surface and secures the backrest against unintentional tilting.

In order to allow the vehicle seat to be adjusted longitudinally when the backrest is folded down, the locking device is connected by means of a coupling mechanism to an adjustment device for adjusting the longitudinal position of the car seat. The car seat frame can be locked in a certain longitudinal position of the car seat via the adjusting device. As a result of the adjusting movement, the actuating force is transmitted to the adjusting device via the coupling mechanism during the pre-tilting of the backrest in order to release the locking of the adjusting device. The coupling mechanism tends to have, for example, a drive element which acts on the adjusting device via a connecting element, such as a rotatably mounted control ring or a cable, so that the locking device for longitudinal adjustment of the car seat is automatically released when the locking device is released and the backrest is folded down, and the car seat, even with the backrest folded down, is longitudinally adjustable, which usually means along the longitudinal guide of the car seat.

.:. : · .. * · - · 2

DE 20 2008 008 312 U1 discloses a species-related car seat with an easy boarding function and a corresponding seat fitting. At the same time, the most important parts of the locking device are arranged on one inner side of the backrest fitting for accidentally safe locking of the backrest with the possibility of folding it as needed, while the most important parts of the connecting mechanism for connecting the locking device with the famous device for adjusting the longitudinal position of the seat are located on the outer side seat fittings. The locking device according to DE 20 2008 008 312 U1 thus comprises, inter alia, a pivoting latch which, in order to provide emergency safety of the backrest in the operating position, is engaged via a latching toothing with a locking element in the form of a locking ring. The latch can be deflected via the actuating element in the form of a friction thumb, so that the latches and the locking ring are no longer in engagement with one another, so that the backrest can then be tilted forward. On the opposite outer side of the seat fitting, there is, inter alia, a pivoting carrier element in the form of a pivot lever, which is located in connection with a connecting element in the form of a rotating ring via a bowden cable. This pivot lever deflects about a pivot axis which differs from the pivot axis of the latch when the latch is deflected in order to release the backrest. The rocker arm thus transmits a transfer force to the rotating ring via the cable connected to it, whereby the locking device for the longitudinal adjustment of the car seat is released.

DE 10 2006 061 037 B3 also discloses car seats with an easy boarding function as well as a corresponding seat fitting, in which the main components of the locking device and the connecting mechanism are arranged on different sides of the seat fitting. In this case, it is proposed in DE 2008 061 037 B3 to provide a pivoting lever in the role of a drive element of a connecting mechanism with two sections which are relatively mutually mutually positionable. Relative movement of the individual sections of the lever is allowed, so that in the event of a misalignment of the backrest - for example when the backrest has been tilted too far or too far forward - the locking device is prevented from locking and the backrest is then raised.

For example, in the case of seats and seat fittings known from the prior art, the problem arises that the assembly of car seats and car seat fitting parts is relatively expensive and the interacting components of the locking mechanism and the connecting mechanism must be highly precisely matched to each other.

In addition, in the case of car seat frames in which different variants of car seat fittings are to be used for car seats of different types, it is very expensive to install the same backrest according to the specific car seat type, either with car seat fittings with locking device and connecting mechanism or by fitting a car seat without a locking device and without a connecting mechanism to the thesis of the frame basic car seat.

For example, vehicle car seats for four- or five-door vehicles, which do not have to be equipped with an easy boarding function, are equipped with seat fittings according to the first variant, which suffice without a locking device and coupling mechanism and are designed and equipped only for adjusting the inclination of the backrest. However, on the basis of the same frame base of the car seat, car seats are also produced for two- or three-door vehicles with seat fittings for the function of easier boarding. Here, a variant is usually selected in which it is possible to fasten a given specific seat fitting in different places on the backrest side, depending on which variant of the backrest fitting is to be used. Therefore, on the side part of the backrest usable for both variants (backrest side) in the case of a specific backrest usually with a side support beam, it is necessary to set up different sections for different variants of seat fittings and seats for attaching specific seat fittings. These are usually welded points to which a certain fitting part or backrest adapter of a certain seat fitting is welded to the backrest side.

The present invention therefore aims to further improve a car seat and seat fitting of the above-mentioned type and in particular to facilitate the assembly of car seats to be manufactured optionally with different variants of seat fittings (including or without an easy boarding function).

The essence of the invention

This object is achieved both by the car seats according to claims 1 and 10 and by the assembly procedure according to claim 13, and by the fitting of the car seat according to claim 16.

According to a first aspect of the present invention, there is provided a car seat having at least:

- longitudinally adjustable car seat support frame,

- an adjusting device for longitudinally adjusting the car seat in order to lock the support frame of the car seat in a certain longitudinal position of the car seat,

- the backrest is mounted on the support frame of the car seat by means of the seat fitting, and the backrest can be tilted forward into the seat within the function by means of the seat fitting. : · .. *:: 4 facilitated boarding, and by means of which the inclination of the backrest in relation to the car seat cushion can be adjusted,

- a locking device for locking the backrest in its operating position, the locking device preferably having a pivoting locking element and a locking-hinge element, and the locking element is in engagement with this locking-hinge element for locking the backrest - for example by means of a locking stop toothing, and is they can be disengaged from the locking element in order to fold the backrest in the direction of the seat surface on the support frame of the car seat, and

- a coupling mechanism for connecting the backrest locking device to the adjusting device for longitudinal adjustment of the car seat, the coupling mechanism having at least one actuating element operatively connected to the locking device and preferably pivotable and a connecting element operatively connected to the adjusting device and the driving element acting on the backrest the connecting element so that the locking of the adjusting device is released when the backrest is tilted forward, so that the support frame of the car seat can be moved in the longitudinal direction (facilitated boarding function).

According to the invention, the locking element of the locking device and the driving element of the coupling mechanism are additionally arranged on the same side of the seat mechanism fitting, so that both the locking element and the driving element are located either in the outer side or in the inner region. sides of the seat fittings and the side support part of the backrest.

Due to the fact that both elements of the locking device and the connecting mechanism are arranged on the same side of the seat fitting, the seat fitting can be constructed more compactly and thus considerably simplifies the assembly of the vehicle car seat. Thus, the locking element and the support element are adjustably mounted only on one side of the seat fitting, whereby the other opposite side of the fitting remains almost completely available for mounting on the backrest. In this case, it is preferred to arrange the locking element and the driving element on the outside of the seat fitting and thus in the region of the outside of one of the two longitudinal backrest sides, between which the backrest upholstery is arranged. On the inside of the seat fitting, facing the opposite side of the backrest, a larger area thus remains available for fastening, in particular welding, to the side of the backrest.

Preferably, the seat fitting is fastened to the backrest support part via the backrest adapter or the backrest adapter. a seat fitting adapter, wherein the locking element and the driving element are arranged on one and the same side of this backrest adapter. Thus, on one side of this backrest adapter, a locking element and a driving element are mounted so as to be adjustable, preferably pivotably - as well as a backrest actuating actuating and actuating actuating element on the locking element. As a result, the opposite side of the backrest adapter remains almost completely available for mounting on the side of the backrest.

Since the essential components of the locking device and the connecting mechanism are set up on the seat backrest adapter and no longer - as in DE 20 2008 008312 U1, for example - partly also on the opposite (inner) side of the fitting on the backrest side itself, it is not necessary to No components of the locking device or the coupling mechanism can be arranged in an adjustable manner on this support side of the backrest. This makes it possible to easily create welding sections with a seat fitting part on the backrest side, which can be used for welding both for seat fittings of the first variant with locking device and connecting mechanism and for seat fittings intended for the second variant without locking device and without connecting device. mechanism. For example, it is possible to use the same welding sections on the backrest, regardless of whether the vehicle car seat is predestined for a two- or three-door vehicle and must therefore be equipped with an easy boarding function, or whether the vehicle car seat is predestined for a four- or five-door vehicle. easy boarding function.

The locking element is connected to the carrier element in such a way that when the locking device is adjusted to release the backrest, the carrier element is moved to the coupling position, in which the carrier element can act on the coupling element in the sense of releasing the locking device. In this case, both the locking element and the carrier element are preferably pivotably mounted and connected together so that, when the locking element is pivoted by the user, the carrier element is deflected into its connecting position in order to release the backrest. It is only by tilting the locking element for releasing the backrest that the driving element is subsequently moved to a position in which, when the backrest is lowered, it can push on the connecting element in the direction of operating the car seat longitudinal adjustment system and releasing the locking of the support base in its longitudinal direction.

The drive element is formed, for example, in the form of a drive arm and has a drive hook, by means of which the drive arm, in its connecting position, engages with the connecting element in the form of a control ring when the backrest is tilted forward. Thus the tilting of the backrest and the engagement between the driving arm and the driving ring, this ring ^control:: ·, · ^·::,: 6 ···· ··· ·· * · rotated, its rotational movement - already known manner - then leads to the activation of the adjustment device of the longitudinal adjustment system of the car seat.

In an effort to make the seat fitting, the respective locking device and the respective connecting mechanism as compact as possible, according to one exemplary embodiment, a solution is adopted in which the locking element and the driving element are pivotable about the same axis of rotation. The physical axis of rotation for both of these elements is defined, for example, by a pin or shaft which is formed or fastened to the backrest adapter.

The arrangement of the locking element and the driving element on a common axis of rotation is preferably solved in such a way that the locking element and the driving element lie next to one another along the axis of rotation. In this case, for example, the carrier element is arranged along the axis of rotation and, when viewed in the spatial direction away from the backrest and extending transversely to the longitudinal direction of movement of the car seat, in front of the locking element. In this way, the locking element lies, for example, between the backrest adapter of the seat fitting and the driving element.

It is, of course, also possible for the pivoting locking element and the associated driving element, as well as the pivoting carrier element, to be pivotable about different but preferably parallel axes of rotation.

According to a first variant of the embodiment, the locking element and the driving element are non-rotatably connected to one another, so that the pivoting movement of the locking element, in particular to release the backrest, also leads directly to synchronous rotary movement of the carrier by exactly the same angle of rotation. swing.

In a second variant of the embodiment, the locking element and the driving element are at least slightly adjustable relative to one another, in particular they are pivotably mounted. In this way, the relative movement of the locking element relative to the driving element is enabled.

This can be advantageous for raising the backrest from a tilted forward position. For example, the design may be such that the backrest is locked by the locking element in the folded position so that the passenger does not have to hold the backrest in the folded forward position when moving the vehicle car seat. Such a comfortable fit is usually released again when the vehicle car seat returns to its normal position. of the seat in the longitudinal direction which it occupied before the car seat of the vehicle was folded down and moved. However, if, for example, due to an obstacle or possible occupancy of the space behind the vehicle car seat, it is impossible for the vehicle car seat to return to its original longitudinal position of the car seat, it must be possible to raise the backrest again. To this end, it is ensured that the user can intervene with the control mechanism by means of the control element of the control mechanism. ······ · ····.:. : * .. * · ··· · 7 locking element so that said comfort lock is released without the need for the vehicle car seat to return to its original longitudinal position of the car seat. By ensuring at least a slight adjustability of the locking element relative to the carrier element in the second embodiment variant, the locking element required for manual unlocking of the comfort grip does not necessarily result in forced simultaneous adjustable carrier movement or not carried over the entire adjustable travel path of the locking element and in any case, it shifts only by a small angle of swing.

According to a further development based on this, the pivoting carrier element is prestressed by means of at least one spring element, for example in the form of a segment spring, in the direction of pivoting. In order to limit the oscillation of the driving element in this direction of oscillation, the locking element has its stop section. The oscillation of the carrier element relative to the locking element in the direction of oscillation in which the pretension of the carrier element is directed is thus limited by the locking element in that the carrier element can no longer be moved (further) in the oscillation direction via said stop section. For example, for this purpose, the locking element and the driving element enter into engagement by means of a functional pin-longitudinal link hole pair, so that the maximum relative displacement of the two said elements is limited by means of this longitudinal hole. According to one exemplary embodiment, the prestressed drive element has a longitudinal opening into which the engagement pin of the stop section of the locking element engages. The pivoting movement of the driving element is thus limited by this pin against the action of the spring element. Relative movement between the driving element and the locking element is possible only against the force of the spring acting on the driving element, up to a maximum of the (second) end of the longitudinal hole opposite the (first) end of the longitudinal hole to which the pin abuts in normal operating positions backrests.

In the pivoting direction in which the carrier element is biased, the coupling position is preferably located, so that the carrier element is automatically pushed or pulled into the coupling position by the force of the spring element as soon as it is allowed by swinging the locking element to release the backrest. The spring element used to prestress the drive element rests on the drive element on the one hand and on the seat fitting cover on the other hand. The spring element used to prestress the driving element is thus not supported on another movable element of the locking device or the coupling mechanism, but only on the components of the vehicle car seat which are immovable relative to the backrest.

As already mentioned above, in addition to the locking element and the driving element, the car seat according to the invention and the seat fitting according to the invention may also comprise a particularly comfortable locking element with which the locking element engages in the folded backrest position to lock the backrest. to lock the backrest in its folded position. It is also possible to set up an actuating element by means of which the locking element can be intervened in order to bring the locking element for tilting the backrest out of engagement with the locking element.

According to one possible variant of the embodiment, it is then possible to arrange on one side of the seat fitting not only a locking element and a driving element, but also an actuating element and / or a comfort grip element. When all four said elements are arranged on one side of the fitting, it is possible to make a one-sided fitting assembly in which both the emergency locking and the comfortable attachment and the (mechanical) control of the car seat adjustment device are located on the same side of the seat fitting.

A second object of the present invention is a vehicle car seat according to claim 10.

In such a vehicle car seat, the locking element comprises not only a first intervention area for locking by means of the locking element in the operating position of the backrest, but also a second intervention area different from the first intervention area, which is designed and determined to lock the folded backrest position by means of a comfort locking element. This - based on the different areas of a single locking element - takes over both the task of emergency safety locking of the backrest in the operating position and comfortable locking of the backrest in the folded position of easy boarding.

According to a possible exemplary embodiment, the locking element forms in the first engagement area several teeth for toothing engagement with the locking element, and in the second engagement area a locking pin under which the comfort grip element can engage when the backrest is in the folded position.

Based on the car seat according to the invention according to the first patent claim, a third object of the method according to claim 13 is based on the assembly of a car seat which can be mounted in different configurations or types, in particular with or without facilitated boarding. As part of the assembly procedure according to the invention, at least two different seat fitting variants can be mounted on such a car seat, the first seat fitting (with facilitated access) being provided with a locking mechanism and a connecting mechanism, and another, second seat fitting being provided without a locking device and without a connecting device. mechanism. Thus, it is possible to create a seat fitting, for example, for a car seat version for a two- or three-door vehicle and another car seat version for a four- or five-door vehicle.

In the process according to the invention, a solution is provided that the backrest has a backrest side on which it is fastened, in particular welded, one part of a given seat fitting, and this seat fitting is:. : · .. ·:.: ·: 9 equipped with a locking device and a connecting mechanism with a locking element and a driving element, which are arranged on the same side of the seat fitting. In the assembly process according to the invention, it is then possible to ensure that a part of a particular seat fitting is always fastened in at least one purposefully identical specific section of the car seat side - and in particular in the same place or in the same places on the inside or outside of the backrest. whether or not a locking device and a connecting mechanism and thus the facilitated boarding function should be used.

Consequently, in the assembly method according to the invention, the easy-to-access seat fitting with locking device and connecting mechanism is mounted over the fitting side on the inside or outside of the backrest side in an area where another seat fitting part without the easy-access function would be mounted. which has no locking device and no connecting mechanism. Thus, in the assembly method according to the invention, the same sections of the backrest side are used to fasten the seat fitting on the backrest side, regardless of whether the seat fitting allows an easy access function or not.

For example, in a car seat of the first type (with facilitated boarding function) with a locking device and a connecting mechanism, a section of the backrest side is welded to a seat fitting adapter according to the first variant and in a car seat of the second type without a locking device and connecting mechanism, the same backrest side section is welded according to the second variant. Thus, for example, in the case of a car seat support base with at least two variants for four-, five- and two- / three-door vehicles, the backrest side can always be welded in the same places with a part of a specifically designed seat fitting with a backrest identically designed for each vehicle car seat type. The backrest side and the respective seat fitting are thus so matched here that, regardless of the seat variant and the vehicle vehicle seat type, at least one corresponding section of the backrest side is always used for welding with a certain car seat fitting.

Of course, this does not preclude that at least one additional welding section or part is provided on the backrest side. an additional welding point where only welding is performed for one specific variant of the backrest fitting. Thus, for example, it can be provided that the same weld points on a given inner side of the backrest side are used to fasten different variants of seat fittings, with or without a locking device and a connecting mechanism.

However, in the case of one of the seat fittings, for example a seat fitting for easy boarding, one seat fitting adapter on the backrest side shall be welded at at least one additional welding spot on the inside in addition to the identical welding points on the inside of the • f 1 ^: Το • · · · · backrest side to backrest side. In this case, adjustable components of the locking device and the connecting mechanism (in particular the locking element and the driving element) are arranged on this adapter. Here, for example, a seat fitting without an easy access function is welded directly to the fitting part in the first or more first welding points with a backrest side, while a seat fitting with an easy entry function and an additional backrest adapter plate is not welded only at the first welding point or at the first welding places with the backrest side, but in addition at at least one other welding point.

With regard to the basic idea of the present invention, to make the seat fitting as space-saving and compact as possible, and in particular to facilitate the installation of a vehicle car seat with an easy-to-board function, the seat fitting according to claim 16 is provided.

In the case of one seat fitting, at least one locking device for locking the backrest in the operating position and one connecting mechanism for connecting the locking device to the adjusting device for the longitudinal adjustment of the car seat are provided as part of the seat fitting. The locking device also has one locking element and one locking element, the locking element being in engagement with the locking element in order to lock the backrest and to disengage the locking element in order to fold the backrest in the direction of the car seat seat. The connecting mechanism comprises at least one carrier element and a connecting element operatively connected to the locking device, the connecting mechanism being arranged such that when the seat fitting is purposefully mounted, the carrier element can act on the connecting element when the backrest is lowered so that when the backrest is lowered by the connecting element the adjusting device is released and the support frame of the car seat can then be moved longitudinally. The (adjustable) parts of the locking device and / or the connecting mechanism are mounted via the backrest adapter of the seat fitting, which must be fastened, in particular welded to the side of the backrest.

According to the invention, in accordance with the first object of the invention, it is ensured that the locking element and the carrier element are arranged on the same side of the backrest adapter - and thus also on the same side of the seat fitting.

Thanks to the seat fitting according to the invention, it is thus possible to achieve the above-mentioned advantages in connection with the car seat according to the invention and with the assembly method explained above.

Accordingly, the advantages and features explained above and further presented apply. The car seats according to the invention and the assembly procedure according to the invention also for the seat fittings themselves and vice versa.

Thus, for example, a car seat according to the invention can also be produced with the aid of a seat fitting according to the invention. It is also possible to carry out the assembly process according to the invention using the seat fitting according to the invention by using the seat fitting according to the invention with an easy boarding function as one of two possible variants of different seat fittings for mounting car seats of at least two different types.

Overview of figures in the drawings

Further advantages and features of the invention are explained in more detail in the following description of exemplary embodiments on the basis of the figures, which show:

Giant. 1 is a cross-sectional view of an embodiment of a car seat according to the invention with an easy access function and with a seat fitting according to the invention, wherein both the locking element of the locking device and the connecting element of the connecting mechanism and the actuating element for actuating the locking element are arranged on the same side of the seat fitting;

Giant. 2A-2D in a perspective view identical to FIG. 1, different positions of the locking device and the connecting mechanism when the backrest of the car seat is lowered,

Giant. 3A-3C show the different positions of the locking device and the connecting mechanism during the erection of the backrest, when this has not yet returned to its original longitudinal position;

Giant. 4A-4C are cross-sectional views of a car seat without an easy boarding function with a seat fitting in a first variant in different views;

Giant. 5A-5C show the car seat according to FIGS. 1, 2A to 2D and 3A to 3C with the function of facilitated boarding and with the seat fitting of another, second variant in different views.

Examples of embodiments of the invention

Figure 1 shows in cross section an example of an embodiment of a car seat according to the invention, of which a backrest-mounted backrest R and a seat fitting 1 for connecting the backrest to the seat support frame are shown in particular on a support frame (not shown). With the seat fitting B shown here, it is possible to adjust the inclination of the backrest R: J ^: Ť *.: In the operating position of the backrest R. ”£ 2 with respect to the seat area of the car seat. In addition, the so-called EASY ENTRY function is provided by the seat fitting B shown, in which the backrest R can be folded forward in the direction of the seat surface and the car seat support frame can be moved in the longitudinal direction of the seat to facilitate boarding and exiting the vehicle. The pivot axes around which the inclination of the backrest R is adjustable and around which the backrest can be folded forward overlap.

In order to ensure the function of facilitated boarding, the seat fitting B has a locking device V, by means of which the backrest is locked with emergency safety in its operating position, and which is able to release the backrest R to fold forward towards the seat.

The seat metal B further has a connecting mechanism consisting of a driving element in the form of a driving arm 2 and a connecting element in the form of a control ring 6, by means of which a locking device is connected to an adjusting device for longitudinal seat adjustment not shown here. By means of the adjusting device, the seat support frame can be locked in a certain longitudinal position, the seat supporting frame being longitudinally displaceable along the rail longitudinal guide when the adjusting device is released. Such an adjusting device can in particular have a memory device by which the car seat is lowered after the backrest is lowered and the support of the frame as part of the function of facilitating boarding or disembarking, it automatically assumes the original longitudinal position of the seat when the backrest R is raised again and the seat support frame is returned.

In order to fasten the car seat fitting B to the seat part of the seat, on which the seat upholstery for the seat is mounted and with respect to which the backrest is adjustable in its inclination about the pivot axis D1 and must be pivotable, the seat fitting B has a seat adaptation. On this seat adapter AS formed here in the form of an adapter plate, the fittings B_ for adjusting the inclination of the backrest R and in particular the closing element of the locking device V in the form of a closing ring 5 are non-rotatably mounted. This closing ring 5 has a region with a number of locking of the tooth 15, with which the locking element V of the locking device V in the form of a locking latch X is engaged in the operating position of the backrest R in order to accidentally lock the backrest R relative to the seat of the car seat.

The locking latch 1 is pivotally mounted on the backrest adapter AL here in the form of an adapter plate. The backrest adapter AL is associated with the backrest R and is welded to the backrest side L of the backrest R. The backrest side L, which defines the longitudinal side of the backrest R, can be, for example, a backrest beam. Here, the backrest adapter AL abuts the outer side of the backrest side L and is welded to the inner side of the backrest side L, -> ** »I · as will be explained in more detail below.

The locking latch 1 arranged on the outside of the adapter AL on the side of the backrest side has a receiving section 10, by means of which it is pivoted on the pivot or pivot axis D3 on the adapter AL. The locking pawl 1 has two arms 13a, 13b for this purpose, which are connected to one another via a receiving section 10. The locking arm 13a has in particular one toothed first engaging section 15, through which the locking pawl 1 engages with the locking teeth 51 of the locking ring 5. indicated in Figure 1, in order to lock the backrest R in the operating position. The curved release arm 13b of the locking latch 1 extends in the form of a finger away from the receiving section 10, so that a latching bulge is formed between the locking arm 13a and the release arm 13b.

Furthermore, an actuating element in the form of a friction thumb 3 is pivotally mounted on the backrest adapter AL about the pivot axis D2. The pivot axis D2 of the friction thumb 3 runs parallel to the pivot axis D3 of the locking catch 1 and parallel to the pivot axis D1 of the backrest R. The friction thumb 3 is formed in the manner of a cam and is pivotally mounted on a bearing section 30. In addition to the bearing section 30, the friction thumb 3 has a control section 31 in front of a circular segment which extends into the bulge of the locking latch 1 formed between the locking arm 13a and the release arm 13b. the deflected position of the friction thumb 3 can act on the locking arm 13a or on the release arm 13b by means of its actuating section 31. In Figure 1, the actuating section 31 abuts the locking arm 13a and thus ensures the engagement of the teeth of the locking pawl 1 into the locking ring 5.

On the same side of the fitting as the locking latch 1, a driving latch 2 of the connecting mechanism 2, 6 of the seat fitting B is arranged here. The driving latch 2 is also pivotable about the pivot or rotary axes D3 mounted on the backrest adapter AL. The driving latch 2 lies in front of the locking pawl 1 along the pivot axis D3 and, when viewed from the outside of the backrest, is coupled to the locking pawl 1 in such a way that the driving pawl 2 is pivoted. by the rotational movement of the locking latch 1. adjusted around the axis of rotation D3 in the same swinging or rotating direction.

In one variant of the embodiment not shown here, the locking latch 1 and the driving latch 2 can be non-rotatably connected to one another for this purpose.

In the variant of the embodiment shown in FIG. 1, the locking catch 1 and the driving catch 2 are mounted with at least a slight possibility of mutual pivoting. For this purpose, the closing latch 1 and the latch 2 of the carrier are located in the case of a functional pin-longitudinal hole pair. The engagement pin 12 projecting parallel to the pivot axis D3 is formed on the bearing section 10 of the locking pawl 1 and engages in a longitudinal opening 21 on the bearing section 20 of the carrier pawl 2. The engaging pin 12 of the locking pawl 1 defines a stop section for the driving pawl 2, over which the driving pawl 2 cannot further deflect relative to the locking pawl 1. The drive latch 2 is further biased here in the direction of the swing (here clockwise) by the action of a spring element (not shown here) - preferably in the form of a torsional cylindrical spring. Here, the spring element rests with one of its arms on the drive latch 2 and with its other spring arm on the cover 7 seated firmly on the backrest (see Figure 5 A), in order to create a preload on the drive latch 2. By the action of the spring element, the driving latch 2 is thus biased against the engagement pin 12 of the locking latch 1 in the pivoting direction (here clockwise). By the action of a functional pin-longitudinal hole pair between the locking pawl 1 and the driving pawl 2 and springing into the driving pawl 2, this pawl automatically adjusts to the prestressed swing direction when the locking pawl 1 and thus the engagement pin 12 are moved. the pin-longitudinal hole allows a relative displacement of the locking pawl 1 to the driving pawl 2, the relative displacement being mainly limited by the dimension of the longitudinal hole 2L

A drive hook 26 is formed on the drive latch 2, which, when released by the locking latch 1 and the locking ring 5 caused by the locking and tilting of the backrest R in the direction of the seat surface, can engage the opposite surface of the latch 62 (cf. Figure 2B) of the control ring 6. the ring 6 is pivoted about the pivot axis D1 mounted on the seat adapter AS and is in connection with an adjusting device for longitudinal adjustment of the seat. As a result of the engagement of the carrier latch 2 via its carrier hook 26 in the control ring 6, it rotates together about the pivot axis D1 when the backrest R is tilted, whereby the adjusting device for longitudinal adjustment of the seat is activated to release its lock.

A comfort locking element 4 is also pivotably arranged on the seat adapter AS. With this comfort locking element 4, the locking catch 1 engages in the folded position of the backrest (cf. FIGS. 2C and 2D), by which the backrest R is locked in the folded position. For this purpose, the locking latch 1 has on its locking arm 13a an additional, second section for engagement with the locking pin 14. This locking pin 14 is arranged at the front end of the locking arm 13a and can be in the folded position of the backrest R _A in which the locking latch 1 was located. with its locking arm 13a pressed up to the comfort locking element 4, supported by the comfort locking element 4. In this case, the locking pin 14 of the locking latch 1 is on. The comfort locking element 4 behind the locking section 44 of the comfort locking element 4 is picked up (cf. FIG. 5C) in order to lock the backrest R in its folded position for easy boarding. Raising the backrest R from the folded position thus locked is then only possible again when the locking latch 1 and the comfort locking element 4 are disengaged from each other. For this purpose, the comfort locking element 4 is connected to an adjusting device for longitudinal adjustment of the seat, so that the comfort locking element 4 automatically releases the locking pin 14 of the locking latch 1 as soon as the car seat support frame reaches its original longitudinal seat position. by lowering the backrest R, and before moving the seat support frame forward. Likewise, in this case it is possible to activate the friction latch 1 out of engagement with the comfort locking element 4 by activating the friction thumb 3, even if the original longitudinal position of the seat has not yet been reached again. For this purpose, the locking section 44 of the comfort locking element 4 is arranged in such a way that the locking pin 14 can be disengaged from the locking section 44 and moved a little further on it by the (overrunning) pivoting movement of the locking latch 1 in the release direction. This will be the same as the function of easier boarding of the presented car seat resp. of the illustrated seat fitting B is explained in more detail by referring to Figures 2A to 2D and 3A to 3C.

Figures 2A to 2D show the various different consecutive phases in the tilting of the backrest Ras triggered by the release of the adjusting device of the longitudinal position of the seat.

In order to release the backrest lock R and allow the backrest to swing freely relative to the car seat and tilt forward on the seat, the vehicle occupant activates, for example, a control mechanism which includes a friction thumb 3. For example, the side handle or in the upper region of the backrest L., which is connected to the friction thumb 3 and causes the friction thumb 3 to rotate about its pivot axis D2 (here counterclockwise). As a result of this rotation of the friction thumb, the actuating section 31 of the friction thumb 3 no longer rests on the locking arm 13a and comes into contact with the release arm 13b of the locking latch 1.

By the force of the friction thumb 3 on the release arm 13b, the locking pawl 1 swings around its pivot axis D3 in a pivot direction which is opposite to the direction of rotation of the friction thumb 3. This disengages the locking pawl 1 with the locking ring 5. Swinging movement of the locking pawl 1, due to the prestressing of the driving latch 2, the almost synchronous oscillating movement of the latch 2 is started in the same oscillating direction (clockwise) about the common oscillating axis D3. As a result, the drive latch 2 assumes the connecting position on the backrest adapter. : · .. ·:.:. : 16

AL. In this connecting position, the hook 26 of the carrier latch carrier 2 engages in the latching opposite surface 62 of the control ring 6, which is rotatably mounted on the seat adapter AS _t and is in operative connection with an adjusting device for adjusting the longitudinal position of the seat. . This is illustrated in particular in Figure 2B.

When the backrest R, which is no longer locked, is further folded, the locking arm 13a of the locking catch 1 is guided along the non-toothed radial outer surface 50 of the locking ring 5 until the backrest R assumes the maximum possible folded position. This maximum tilted position is shown in Figure 2C. Here, due to the consistent rotation of the control ring 6 due to the engaging driving latches 2, the locking device of the seat longitudinal adjustment mechanism is released, so that the car seat seat support frame can then be moved forward in order to facilitate passenger entry and exit from the rear row of seats.

In addition, in the maximally folded position of the backrest R, the locking pin 14 of the locking latch 1 is partly guided around the seat comfort locking element, so that the locking pin 14 can be removed due to the swing of the comfort locking element 4 about the pivot axis D4 located on the seat adapter AS. This is illustrated in Figure 2D.

Here, the backrest R, starting from the operating position in FIG. In addition, by the locking pawl 1 engaging with the locking locking element 4 with its locking pin 14, the backrest is locked in its folded position, so that the backrest R no longer has to be held manually in the folded position when the seat support frame is moved.

The backrest R is held in its maximum folded position by means of the comfort locking element 4 until the seat support frame regains its original longitudinal seat position. For this purpose, the comfort locking element 4 is connected to the adjusting device for longitudinal adjustment of the seat so that when the seat support frame is moved back and the seat position originally occupied is reached, the comfort locking element 4 swings back (here counterclockwise) and only then the locking latch releases again.

In order to prevent the backrest_R from being raised again even if the original longitudinal position of the seat could not be reached again, the locking device in this case

Arranged in such a way that it is possible to act on the locking latch 1 by means of the friction thumb 3 so that the locking pin 14 is disengaged from the comfort locking element 4. Thus. : · ··· · π it may happen that the car seat can no longer be moved back to the original longitudinal position of the seat due to an obstacle, but the backrest R must still be raised again. For this purpose, it is possible to act on the release arm 13b of the locking catch X in the folded position of the backrest R, so that the locking pin 14 can be lifted during the transition from the locking with the comfort locking element 4.

The locking pawl 1 is pivoted by a pivoting angle in the swing release direction, in which the locking pawl X itself also swings in order to release the locking by the locking ring 5 and thus to release the backrest. This is illustrated in more detail in Figure 3 A.

The locking pin 14 is raised by the comfort locking element 4 still in the locked position, so that the locking pin X4 is no longer in engagement with the comfort locking element 4 and is guided along the guide surface 24 of the comfort locking element 4 when the backrest R is re-erected. (Figure 3B).

During the overrunning movement of the locking latch X in order to release the locking with the comfort locking element 4, the drive latch 2 connected to it may also pivot. Since the locking pawl X is pivotable with respect to the driving pawl 2 within the pin-longitudinal hole pair, the locking pawl X can first pivot by an adjusting path defined by the dimension of this longitudinal hole during its overrunning movement, without adjusting the spring pressed by the driving pawl. latch 2. Although this is not absolutely necessary, this reduces the friction and thus the adjusting force required to release the comfort lock. When the backrest R reaches its operating position again according to FIG. 3C, the locking latch X automatically engages again in the locking ring 5 and is thus securely locked in the locking position 3 thus obtained by means of a friction thumb 3 engaging in the locking arm 13a.

By arranging the locking latch X, the driving latch 2, the friction thumb 3 and the comfort locking element 4 exclusively on the outside of the backrest R and on the armature side of the seat fitting B, a highly compact seat fitting B is created, facilitating assembly of seat fitting B and car seat itself. In addition, by providing different engaging sections on the locking latch X, which are designed and set up for emergency safety locking by means of the locking ring 5 and for comfortable locking by the comfort locking element 4, only direct movement of the locking latch X has a direct effect on facilitated boarding. The tolerance-dependent dependence between the emergency-safe locking and the free swing of the backrest R and the comfortable locking is thus clearly minimized.

The one-sided solution of the fitting design presented here additionally provides the advantage that the inner side of the adapter AL from the side of the backrest, the adapter plate of the backrest, remains free available for mounting on the side of the backrest. Thus, a locking latch 1, a driving latch 2 and a friction thumb 3 are pivotally mounted on the outside of the adapter AL 18. The mutually cooperating and displaceably mounted components of the control mechanism, the locking device V and the coupling mechanism 2, 6 mounted on the seat fitting B are thus located entirely on outside of the backrest. As a result, no components of the locking device V or the connecting mechanism 2, 6 have to be arranged on the inner side of the backrest of the inner part of the backrest L.

This provides the advantage that on the inside of the backrest side L of the backrest RJ, correspondingly multi-type adapted sections can be used to fasten the seat fitting, regardless of whether or not the car seat is to be equipped with an easy boarding function. Thus, for example, the seat fitting B according to FIGS. 1,2A, -2B and 3A-3C can be welded by means of its backrest adapter AL at the same welding points with the backrest side L, on which the seat fitting would also be welded, which would only allow adjusting the backrest inclination. , but without the facilitated input function. Thus, in an assembly process in which car seats are to be manufactured on the basis of the same seat base in different types, for example for two- or three-door vehicles with an easy-to-board function and also for four- or five-door vehicles without an easy-to-board function, welding spots on the inside of the backrest side for welding with the appropriate seat fittings. This is illustrated in Figures 4A to 4C and 5A to 5C explained in detail below.

Figures 4A, 4B and 4C show a perspective view showing the outside of the backrest, in section and in a perspective view of the inside of the backrest in section a car seat of the first type with a first variant of seat fitting B *, where the facilitated boarding function is not performed. Therefore, here the car seat resp. the seat fitting B * has no V lock and no connecting mechanism 2, 6 to the adjusting device of the longitudinal seat adjustment system. Instead, the seat fitting B * only serves to adjust the inclination of the backrest JR in the operating position with respect to a seat, also not shown here, with the seat surface of the car seat. The seat adapter AS * of the seat fitting B *, which will have to be fastened to the car seat cushion, and no other backrest adapter, are provided only in the form of an adapter plate. Does the seat fitting B * have two fitting parts B1 and B2 in a known manner in order to adjust the inclination _? which are assigned individually to the backrest R and to the seat. In this case, the one fitting part B2 is assigned to the backrest R and is directly welded to the side of the backrest B *. The fitting part B2 thus forms the seat fitting part B *, over which the fitting B * is fastened to the backrest. Here, several welding points are located on the inside of the backrest side L.:. : · .. *: ··· Í9

S1 in the region of the opening in the fitting on the backrest side 11, on which the externally attached fitting part B2 is welded to the backrest side_L, for example by means of laser welding.

—'1 _M

Figures 5A, 5B and 5C also show an example of an embodiment of the above-mentioned Figures 1, 2A to 2D and 3A to 3C with a car seat with a view of the outer side of the backrest, a sectional view and a perspective view of the inner side of the backrest. Due to the one-sided design of the fitting of the seat fitting B and the fact that it is not necessary to set up components of the locking device V or the connecting mechanism 2 on the inside of the backrest side L. It is possible to use the same welding points S1 on the backrest side L. for fastening the seat fitting B as well as for fastening the seat fitting B * according to Figures 4A to 4C without the facilitated entry function.

On the inside of the backrest side L, additional welding points S21 and S22 are also prepared, on which welding is performed with the backrest adapter AL of the seat fitting B for the function of facilitated boarding. These welding points S21 and S 22 remain unused for the car seat of four- or five-door vehicles in the case of seat fittings B * without an easy-to-board function.

Thus, for the assembly of car seats of various types - for example for two- or three-door vehicles, as well as for four- or five-door vehicles - it is possible to use the same welding points S1 for fastening a given seat fitting B or B *. In the case of a B * seat fitting for a car seat without an easy boarding function, it is also not necessary to use a backrest adapter, for example in the form of a sheet metal backrest adapter. This is otherwise usually necessary when for several types of mounted car seats it is not possible to use any multi-type adapted (welding) points for fixing different seat fittings to the backrest side L.

Claims (16)

PATENT CLAIMS 1. A car seat comprising at least - longitudinally adjustable seat frame - an adjustment device for longitudinal adjustment of the seat, in order to lock the seat support frame in the longitudinal position of the seat, - the backrest (R) mounted on the seat support frame by means of the seat fitting (B) around the pivot axis (D1), - a locking device (V) for locking the backrest (R) in the operating position, the locking device (V) having a locking element (1) and a closing element (5), the locking element (1) being located for locking the backrest (R) in engagement with the locking element (5) and in order to tilt the backrest (R) in the direction of the seat surface of the seat of the seat support frame, it is possible to disengage from the engagement with the locking element (5), and - a connecting mechanism (2, 6) for connecting the locking device (V) for the backrest (R) to the adjusting device for longitudinal adjustment of the seat, the connecting mechanism (2, 6) having at least one drive element operatively connected to the locking device (V) (2) and the connecting element 6 operatively connected to the adjusting device, and the driving element (2) can act on the connecting element (6) when the backrest (R) is folded so that when the backrest (R) is folded the locking device is released and the seat support frame can be moved in the longitudinal direction, characterized in that the locking element (1) and the driving element (2) are arranged on the same side of the seat fitting (B), which defines either the inner side or the inner side in the direction of the pivot axis (D1) of the backrest. R) the opposite outer side of the seat fittings (B). Car seat according to Claim 1, characterized in that the locking element (1) and the carrier element (2) are arranged on the outside of the seat fitting (B). Car seat according to Claim 1 or 2, characterized in that the locking element (1) and the carrier element (2) are mounted on one side of the backrest adapter (AL) of the seat fitting (B), which is mounted on the backrest (R). Car seat according to one of Claims 1 to 3, characterized in that the locking element (1) is connected to the carrier element (2) in such a way that when adjusting the locking element (1) to release the backrest (R), the carrier element (2) is adjusted. ) to the connected position, in which the driving element (2) can act on the connecting element (6) when the backrest (R) is subsequently folded down. Car seat according to one of the preceding claims, characterized in that the locking element (1) and the driving element (2) are pivotable, in particular about the same axis of rotation (D3). Car seat according to one of the preceding claims, characterized in that the carrier element (2) is arranged next to the locking element (1) with respect to its axis of rotation (D3). Car seat according to one of the preceding claims, characterized in that the locking element (1) and the driving element (2) are mounted at least somewhat relatively mutually adjustable, in particular pivotable. Car seat according to Claim 7, characterized in that the pivoting carrier element (2) is biased in the pivoting direction by means of at least one spring element and the locking element (1) has a stop section (12) which pivots the carrier element (2) in this direction. limits the swing direction. Car seat according to any one of the preceding claims, characterized in that a comfort locking element (4) is provided, with which the locking element (1) engages in the folded position of the backrest (R), whereby the backrest (R) is locked in the folded position . A car seat, in particular a car seat according to any one of claims 1 to 9, comprising at least - seat support frame, - the backrest (R) is folded down on the seat support frame by means of the seat fitting (B), - a locking device (V) for locking the backrest (R) in the operating position, the locking device (V) having a locking element (1) and a closing element (5) and the locking element (1) being located in order to lock the backrest (R); engagement with the closing element (5) and in order to tilt the backrest (R) in the direction of the seat surface of the seat of the seat support frame, it is possible to release from engagement with the closing element (5), • Ž2 - a comfort locking element (4) by means of which the locking device (1) in the folded position of the backrest (R) engages in order to lock the backrest (R) in the folded position, characterized in that the locking element (1) comprises a first engaging section ( 15) for locking with the locking element (5) in the operating position of the backrest (R) and another second engaging section different from this for locking with the comfort locking element (4) in the folded position of the backrest (R). Car seat according to any one of the preceding claims, characterized in that the locking device (V) has an actuating element (3) by means of which the locking element (1) can be actuated so that the locking element (1) is disengaged from the locking device. element (5) and so that the backrest (R) can be folded down in the direction of the seating surface. Car seat according to one of Claims 9, 10 or 11, characterized in that the locking element (1), the driving element (2), the actuating element (3) and / or the comfort locking element (4) are arranged on the same side of the fitting. 13. Procedure for assembling a car seat which has at least one longitudinally adjustable seat support frame and a backrest R mounted on the seat support frame by means of a seat fitting (B, B *) and which is possible with different seat fitting variants (B, B *). ) to be mounted with or without locking device (V) and connecting mechanism (2, 6), whereby - by means of the locking device (V), the backrest (R) can be locked in the operating position by the locking element (1) of the locking device (V) engaging with the closing element (5) of the locking device (V), and by means of the locking device (V) it is possible to tilt the backrest (R) in the direction of the seat surface of the seat support frame, by disengaging the locking element (1) from the locking element (5), - by means of the connecting mechanism (2, 6) the locking device (V) for the backrest (R) is connectable to the adjusting device for longitudinal adjustment of the seat, and the connecting mechanism (2, 6) has for this purpose at least one active device with the locking device (V) connected by the driving element (2) and one operatively connected connecting element (6) by the adjusting device, so that this driving element (2) can act on the lower back when the backrest (R) is folded down. : · .. *:.: · 2¾ the connecting element (6) and when the backrest is folded down (R), the longitudinal adjustment lock is released. - at least one seat fitting (B) with a locking device (V) and a connecting mechanism (2, 6) and one seat fitting (B *) without a locking device (V) and a connecting mechanism (2, 6) are formed, by means of which optionally fit a car seat, and - the backrest has a backrest side (L) to which it is necessary to attach, in particular by welding, the part (AL, B2) of the relevant seat fitting (B, B *), characterized in that - a seat fitting (B) is formed with a locking device (V) and a connecting mechanism (2, 6), on which the locking element (1) and the driving element (2) are arranged on the same side of the seat fitting (B), and - the part (AL, B2) of the respective seat fitting (B, B *) is always fastened on a certain section of the backrest side (L), regardless of whether or not with the locking device (V) and the connecting mechanism (2, 6). Method according to Claim 13, characterized in that in the case of a car seat of the first type with a locking device (V) and a connecting mechanism (2, 6) a section of the backrest side (L) is welded to the seat fitting adapter (B) of the first variant; of the type without a locking device (V) and a connecting mechanism (2, 6), the same section of the backrest side (L) is welded to the seat fitting part (B2) of the second variant. Method according to Claim 13 or 14, characterized in that the same welding points (S1) are used in order to fasten the different variants of the seat fittings (B, B *) with or without the locking device (V) and the connecting mechanism (2, 6). on one inner side of the backrest side (L). 16. A seat fitting for a car seat with a longitudinally adjustable seat support frame and a backrest (R) tilting in the direction of the seat surface of the car seat about the pivot axis (D1), the seat fitting (B) being constructed and intended to allow the backrest to be locked ( R) in the operating position in relation to the seating surface and its tilting, and at least containing • 24 - a locking device (V) for locking the backrest (R) in the operating position, the locking device (V) having a locking element (1) and a closing element (5), and a locking element (1) for locking the backrest (R) being located in engagement with the locking element (5) and in order to fold the backrest (R) in the direction of the seat surface of the seat support frame, it can be disengaged from the locking element (5), - a connecting mechanism (2, 6) for connecting the locking device (V) for the backrest (R) to the adjusting device for longitudinal adjustment of the seat, the connecting device (2, 6) having at least one drive element operatively connected to the locking device (V) (2) and the connecting element (6), and the driving element (2) can act on the connecting element (6) when the backrest (R) is tilted so that when the backrest (R) is tilted by means of the connecting element (6), the locking of the adjusting device is released. and the seat support frame can be moved in the longitudinal direction, and - a backrest adapter (AL), which is fastened, preferably welded, to the backrest side (L) of the backrest (R), and on which the parts of the locking device (V) and / or the connecting mechanism (2, 6) are placed, characterized by that the locking element (1) and the driving element (2) are arranged on the same side of the backrest adapter (AL), which in an expediently designed arrangement of the seat fitting (B) on the car seat defines either the inner side or with respect to the inner side in the swing axis direction ( D1) of the backrest (R) opposite the outside of the backrest adapter (AL).