Fitting for a vehicle seat and vehicle seat with such a fitting

Abstract

The invention relates to a fitting (12) for a vehicle seat (2) with an easy-entry function and to such a vehicle seat. The fitting (12) has a first fitting adapter (14) with a locking element (18) and a second fitting adapter (16) pivotably mounted relative to the first, with a locking pawl (20), wherein the locking pawl (20) is pivotably mounted on a bearing pin designed as an eccentric bolt (60) between an open position releasing the pivoting movement and a locked position blocking the pivoting movement, so that a tolerance play of the locking pawl (20) can be adjusted via the eccentric bolt (60).

Description

[0001] The invention relates to a fitting for a vehicle seat comprising a first seat element, in particular a seat part, and a second seat element, in particular a backrest, with a first fitting adapter fixedly arranged on the first seat element, the first fitting adapter having a locking element, in particular designed as a locking disc, and a second fitting adapter pivotably mounted relative to the first fitting adapter, the second fitting adapter having a locking pawl, and the second fitting adapter being fixedly arranged on the second seat element. The locking pawl is pivotably mounted on a bearing pin of the second fitting adapter between an open position that allows the pivoting movement of the second fitting adapter and a locked position that prevents the pivoting movement. In the locked position, the locking pawl engages in a locking receptacle of the locking element. The invention further relates to a vehicle seat with such a fitting.

[0002] Such a fitting and vehicle seat can be found in DE 10 2022 208 805 A1.

[0003] Vehicle seats typically feature backrests that are foldable and / or swiveling for reclining adjustment. In vehicles with an easy-entry function, in addition to normal reclining adjustment, the backrest can also be folded down to facilitate access to the rear passenger area or a third row of seats.

[0004] The backrest is generally pivotally attached to the seat base via fittings on both sides. A locking mechanism, also known as a lock, is formed by a locking element, typically designed as a locking disc, and an associated locking pawl. This mechanism prevents the backrest from folding down when closed and allows it to fold down when open.

[0005] The locking mechanism must generally be designed to transmit high forces, especially in a crash, in order to hold the backrest in the defined instantaneous position and prevent it from folding inwards.

[0006] To secure the locking pawl in its locked position, a pivotally mounted (first) locking element is provided, which in one version is also referred to as a friction thumb. This element is itself adjustable between a locked and an unlocked position. Actuating this locking element unlocks the locking pawl, whereupon it automatically moves, primarily by spring force, into its open position and is released from the locking disc, thus allowing the backrest to be folded down.

[0007] The locking mechanism is typically operated manually, primarily via a pull cable. For the most comfortable and smooth operation of the locking mechanism without jamming, the pairing of the locking mechanism and the pawl is crucial, particularly the design of the engaging surfaces and the friction angle at which the locking mechanism is oriented relative to the contact surface on the pawl. Generally, increased ease of operation (minimal self-locking of the locking mechanism) reduces crash safety (higher self-locking of the locking mechanism).

[0008] Due to the multiple degrees of freedom of movement of the locking element, the locking pawl, and unavoidable tolerance effects, the friction angle in the locking position of the locking element varies between different fittings. This leads to undesirable fluctuations in ease of operation as well as in crash safety.

[0009] To ensure reliably high crash safety, it is known from the state of the art to use a second locking element which, in the event of a failure of the first locking element, reliably holds the locking pawl in the locking position.

[0010] To avoid play, especially in the bearing area of ​​the pawl, it is further known from the aforementioned prior art that the pawl is pressed into the locking receptacle by the first locking element, so that the pawl is pressed on the one hand against an edge-side support surface of the locking receptacle and on the other hand against the bearing point.

[0011] Based on this, the invention aims to provide a fitting for a vehicle seat, in particular for an easy-entry function, in which reliably comfortable operation is guaranteed.

[0012] The problem is solved according to the invention by a fitting for a vehicle seat comprising a first seat element, in particular a seat part, and a second seat element, in particular a backrest. - a first fitting adapter, fixedly attached to the first seat element in the assembled state, with a locking element designed in particular as a locking disc and - a second fitting adapter with a locking pawl, which is pivotably mounted relative to the first in the assembled state and is fixed to the second seat element in the assembled state, - wherein the locking pawl is pivotably mounted on a bearing bolt of the second fitting adapter between an open position that releases the pivoting movement of the second fitting adapter and a locking position that blocks the pivoting movement, - wherein the locking pawl engages at least partially in a form-fitting manner in a locking receptacle of the locking part, - wherein the bearing bolt is designed as an eccentric bolt, via which a tolerance play of the pawl can be adjusted.

[0013] The eccentric bolt allows for convenient operation of the locking mechanism formed by the fitting, as it enables adjustment of the locking pawl's play, particularly in relation to the locking receptacle. This generally means that the position of the locking pawl can be adjusted by rotating the eccentric bolt.

[0014] The eccentric bolt therefore allows a suitable tolerance clearance to be set during assembly, so that a relative position of the pawl to a locking (first) locking element can be defined, so that the locking element in its locking position is always oriented under a defined friction angle, which enables convenient unlocking of the locking mechanism.

[0015] In a preferred embodiment, a locking element is also attached to the second fitting adapter. This locking element is hereinafter also referred to as the first locking element and is adjustable between a locking position and an unlocking position, particularly about a bearing point. This first locking element is, for example, designed as a so-called friction thumb. Alternatively, it is designed as a hinged lever. In the friction thumb configuration, the first locking element is designed as a rigid, one-piece pivot lever that can be pivoted about a first axis of rotation. This lever has a rounded contact surface opposite the first axis of rotation, which presses it against the locking pawl.

[0016] The first locking element, when in the locked position, locks the pawl in its locked position. For this purpose, the first locking element is held in the locked position by means of a spring element, for example a tension or compression spring, and thus exerts a locking force on the pawl.

[0017] The pawl itself is preferably also designed as a rigid, one-piece pivot lever, which can be pivoted about a second axis of rotation provided by the eccentric bolt. Opposite the second axis of rotation, the pawl has a rounded end face contact surface with which, in its locked position, it rests against a corresponding edge support surface of the locking receptacle. The pawl also has an upper edge or side surface against which the first locking element pivots with its front contact surface.

[0018] The eccentric bolt adjusts the distance between the end face of the pawl and the edge support surface of the locking receptacle, thus compensating for any existing tolerance play. Rotating the eccentric bolt allows for adjusting the distance between the second axis of rotation, around which the pawl pivots, and the end face. This enables the compensation of different manufacturing and assembly tolerances.

[0019] The first locking element, in its locked position, is supported at a first contact point on the pawl. This first contact point defines the contact area of ​​the first locking element with which it is supported against the pawl. A friction angle greater than 3°, and preferably greater than 5°, is preferably formed between a first normal force vector at the first contact point and a first pivot line. The first pivot line extends from the first contact point through the first axis of rotation about which the first locking element can pivot.

[0020] The friction angle is preferably in a range between 5° and 15° and particularly between 8° and 12° and, for example, at 10°.

[0021] As previously explained, in its locked position, the pawl rests against the locking receptacle with its end-face contact surface, specifically at a second contact point. This point is part of the pawl's contact surface and defines the contact area between the pawl's contact surface and the corresponding edge-side support surface of the locking receptacle.

[0022] In a preferred embodiment, a pawl angle greater than 0°, and particularly greater than 10°, is formed between a normal force vector at the second contact point and a second pivot line. In particular, it lies in a range between 5° and 40°, preferably in a range between 10° and 30°, and more preferably, for example, at 25°. The second pivot line extends from the second contact point through the second axis of rotation about which the pawl can pivot. The eccentric bolt can also be rotated about this second axis of rotation.

[0023] The two angles—the friction angle of the locking element relative to the pawl, and the pawl angle relative to the locking receptacle—are each determined by the angular distance between the respective normal force vector at the contact point and the respective pivot line. The normal force vector is a normal to a contour line of the locking element or pawl at the respective contact point. For example, the contour line might follow a circular arc. In this case, the normal is a radial of a circle whose center is located some distance from the respective pivot point.

[0024] The specially selected angles ensure a high level of operating comfort overall, so that the chosen geometry of the individual elements of the locking mechanism allows for the most comfortable operation possible. Of particular importance here is the design of the bearing pin as an eccentric pin, which allows manufacturing tolerances to be adequately compensated for, ensuring that the pawl and the first locking element are oriented in the desired angular orientations.

[0025] The eccentric bolt allows for tolerance compensation, eliminating the need for tolerance adjustment via the first locking element in its locked position. Without the eccentric bolt, tolerances would negatively affect the position of the first locking element in the locked position. These positional tolerances would otherwise have to be compensated for by adjusting the dimensions of the first locking element, necessitating a larger design and a longer release travel. Depending on the tolerances, the first locking element would have to pivot to varying degrees without the eccentric bolt.

[0026] Depending on the position in the locking position, this could lead to a stiff or difficult feeling when releasing, or conversely, there is a risk of unintentional release.

[0027] The eccentric bolt is preferably fastened by means of a screw and thereby fixed in its rotational position (after adjustment), particularly on the second, backrest-side fitting adapter. The screw allows the eccentric bolt to be detachably fastened, in particular in such a way that its rotational position can still be varied even after initial adjustment.

[0028] In a practical design, the screw can therefore be loosened even after the seat has been installed, and the eccentric bolt is adjustable. To do this, the screw is loosened slightly, the eccentric bolt is adjusted to the desired rotational position, and then the screw is tightened again. This measure also allows for any necessary readjustment of the tolerance play even after the seat has been installed.

[0029] Preferably, the eccentric bolt is clamped with its underside against a counter surface, which is formed in particular on the second fitting adapter. At least one of these components, selected from the underside and the counter surface, has a toothed section to prevent the eccentric bolt from rotating.

[0030] The eccentric bolt generally has a head area, on which, for example, a tool grip is formed, with the aid of which the rotational position of the eccentric bolt can be adjusted. The underside of the head forms the underside of the eccentric bolt.

[0031] In the preferred embodiment, this underside features a toothed surface, i.e., a toothed underside is formed. This toothed surface provides particularly efficient anti-rotation protection, allowing the required tightening torque to be kept low while still ensuring sufficient anti-rotation protection.

[0032] In a preferred embodiment, at least one marking is provided on the eccentric bolt and / or on the second fitting adapter, and in particular on a housing part of the second fitting adapter, indicating a permissible adjustment range for the eccentric bolt. This marking prevents incorrect adjustment, such as over-tightening the eccentric bolt during assembly.

[0033] In a further development, a transport lock is incorporated by which the eccentric bolt is fixed to a component of the second fitting adapter, specifically to a housing part, particularly a cover plate of the second fitting adapter, before the eccentric bolt is actually attached to the first fitting adapter. In a preferred embodiment, at least some components of the fitting, especially the second fitting adapter, are provided by a pre-assembled module, a so-called pre-assembly module. The transport lock securely holds the initially unattached eccentric bolt to this pre-assembly module.

[0034] To provide transport protection, the eccentric bolt preferably has a recess at its edge near its head. On the associated component, particularly the housing part, a tab is formed that projects radially beyond the disc-shaped head. The eccentric bolt is guided axially past this tab by means of the recess and, by subsequent rotation with the tab, forms a positive locking mechanism in the axial direction. The transport protection is therefore designed like a bayonet fitting.

[0035] In a further development, at least some of the components of the fitting, in particular the second fitting adapter and especially the components eccentric bolt, locking pawl, locking receptacle, and preferably also the first locking element, are designed without paint. Preferably, all components of the fitting are designed without paint.

[0036] Seat frames are typically coated with lacquer, for example by immersion, and therefore have a lacquer finish. In this case, however, such a lacquer finish is deliberately omitted, at least for the essential components of the fitting. The corresponding fitting components, and in particular the entire fitting assembly, are therefore not yet mounted on the seat frame during the lacquering process. This measure ensures the highest possible dimensional accuracy. Specifically, it prevents, for example, any changes in tolerances due to lacquer wear after a certain period of use, which would negatively affect the function and operation of the fitting.

[0037] In a preferred embodiment, the pawl is clamped in its locked position without play within the locking receptacle. For this purpose, the first locking element presses the pawl both towards the front, edge-side support surface of the locking receptacle and against its bearing point, and thus against the eccentric bolt. This also presses the pawl, or rather the eccentric bolt, against a rear support surface of the locking receptacle in the area of ​​the bearing point, so that the pawl is held in the locking receptacle without any play. In particular, any existing radial play between the bearing point and the pawl is eliminated by the pawl being supported at the bearing point. The fitting itself is thus free of play at the bearing point. The combination of such play elimination with the eccentric bolt allows for particularly precise adjustment of the fitting elements and thus also for convenient operation of the fitting.

[0038] With regard to the desired high level of crash safety, a second locking element is adjustably arranged on the second fitting adapter, in particular pivotably mounted, and is designed as a crash locking element. This second locking element is preferably also held in a locked position, particularly by means of a second spring element. Both locking elements are preferably pivotably mounted about the same bearing point, but independently of each other. In its locked position, the crash locking element is spaced apart from the pawl and therefore initially exerts no locking force on it. Only if the first locking element fails does the pawl come into contact with the second locking element and is held in the locked position by it. Preferably, the second locking element has a different, in particular smaller, friction angle with the pawl compared to the first locking element.The second locking element is also preferably designed as a friction thumb.

[0039] The vehicle seat according to the invention, with such a fitting as described above, is intended for, suitable for, and equipped for use in a motor vehicle. The vehicle seat is, in particular, designed as a front seat in a two-door or three-door motor vehicle. Alternatively, it is designed as a seat in a second row of seats in a vehicle with three rows of seats. The vehicle seat generally comprises a seat cushion and a backrest, as well as the fitting described above. The fitting is, in particular, designed as an easy-entry lock, so that the vehicle seat is equipped with an easy-entry function.

[0040] An embodiment of the invention is explained in more detail below with reference to the figures. These show: Fig. 1 in schematic representation a vehicle seat according to the state of the art with a seat part and with a backrest as well as with a fitting, Fig. 2 in perspective exploded view the fitting according to the state of the art with parts of the vehicle seat, Fig. 3 in partial top view of a fitting according to the invention with an eccentric bolt, Fig. 4 a perspective view of the eccentric bolt as well as Fig. 5 in partial top view analogous Fig. 3, however with a cover plate to illustrate the transport securing mechanism.

[0041] In Fig. Figure 1 shows a simplified and schematic representation of a vehicle seat 2 with a first seat element 4 designed as a seat section and a second seat element 6 designed as a seat or backrest. The seat section 4, for example, has a seat surface 8 and a seat base (seat support) 10. In the assembled state, the seat base 10 is firmly connected to a vehicle body.

[0042] The seat section 4 and the backrest 6 are coupled in a foldable or swiveling manner by means of a fitting 12. The fitting 12 is preferably designed as an easy-entry lock.

[0043] The fitting 12 comprises a first fitting adapter (seat adapter) 14, which is fixedly connected to the seat part 4 or the seat base 10, and a second fitting adapter (backrest adapter) 16, which is coupled to the backrest 6. The fitting 12 also has a locking mechanism to prevent swiveling.

[0044] The locking mechanism comprises a fixed locking part designed as a locking disc 18, which is arranged on the seat adapter 14, and a pawl system arranged on the backrest adapter 16 with a pawl 20 and with at least one first locking element 22 designed as a friction thumb.

[0045] The backrest 6's tilt relative to the seat 4 is adjusted by manually or electrically pivoting the backrest adapter 16 relative to the seat adapter 14. During normal backrest tilt adjustment, the fitting 12, or its locking mechanism, is in a closed position, so that the backrest adapter 16 is firmly coupled to the backrest 6 via the locking mechanism. This causes the backrest 6 to pivot or fold along with the backrest adapter 16. In an open position, the backrest adapter 16 is decoupled from the backrest 6, allowing the backrest 6 to be freely pivoted manually.

[0046] When the fitting 12 is actuated, the backrest 6 is thus adjustable in its (backrest) position P. The backrest 6 is reversibly movable between an approximately vertical upright position A, which represents the highest possible position P, and, for example, an approximately horizontal easy-entry position EE, which represents the lowest possible position P. In these positions A and EE, the backrest 6 is in the Fig. 1 is indicated by dashed lines. The backrest 6, on the other hand, is shown in a semi-inclined intermediate position with solid lines.

[0047] The basic structure and function of fitting 12 will be explained using the following: Fig. 2 and the Fig. 3 explained: The backrest adapter 16 is typically welded to a backrest frame 26 of the backrest 6. In the exemplary embodiment, three screws 24 are firmly attached to the backrest frame 26 to fasten a lock (or lock assembly) of the fitting 12. The backrest adapter 16 has, for example, a two-part housing with a lock carrier 28 as the housing base and a cover plate (lock cover) 30 as the housing cover of the lock. The lock carrier 28 and the cover plate 30 are, for example, injection-molded parts. In the assembled state, the lock carrier 28 and the cover plate 30 form a (plastic) housing for the lock or lock assembly. The latch system of the locking mechanism is housed within the resulting interior of the housing.

[0048] On the lock carrier 28, two vertically oriented bearing bolts are arranged as bearing points 32 and 34, which are fixed by means of two screws 24. The locking pawl 20 is pivotably mounted on bearing point 32. The first locking element 22 is pivotably mounted on bearing point 34. In the exemplary embodiment, a second locking element 36, which is also referred to as a crash locking element, is additionally mounted on bearing point 34. In the exemplary embodiment, the locking elements 22 and 36 are designed as so-called friction thumbs.

[0049] The locking pawl 20 is pivotably arranged on the bearing point 32 between an open position that releases the pivoting movement of the seat and backrest adapters 14, 16 and a locking position that blocks the pivoting movement. Fig. 3 The locking pawl 20 is in its locked position. In this position, the locking pawl 20 engages, at least partially, in a positive-locking manner with a locking receptacle 38 of the locking disc 18, so that the relative rotational or pivoting movement of the backrest adapter 16 to the seat adapter 14 is blocked.

[0050] To fix or lock the pawl 20 in the locked position, the first locking element 22, and in the preferred embodiment of the variant, also the second locking element 36, are arranged as locking rotary latches pivotably about the bearing point 34. The arrangement of the second locking element 36 is not mandatory, but is preferred to improve crash safety. The locking elements 22 and 36 are each pivotably arranged on the bearing point 34 between a locked position and an unlocked position. Fig. In section 3, the locking elements 22 and 36 are in the locked position. In the locked position, the locking elements 22 and 36 block any movement of the pawl 20, so that it is locked in the locking receptacle 38. They are held in the locked position by means of spring elements 40 and 42. To unlock, the locking elements 22 and 36 are pivoted, in particular manually, for example with a cable, against the spring force and, in the exemplary embodiment, counterclockwise into an unlocking position, so that the pawl 20 is released. It is then moved, in particular by means of a spring force, from its locked position to the open position, in which it is led out of the locking receptacle 38. In the exemplary embodiment, the pawl 20 pivots counterclockwise for this purpose.

[0051] In the locked position, the locking elements 22, 36 exhibit different contact angles or friction angles α (see also Fig. 3) with the pawl 20. The first locking element 22 has a larger friction angle than the second locking element 36. In normal operation, only the first locking element 22 rests against the pawl 20 at its upper edge. The second locking element 36 serves as a safety device, for example in the event of a crash, should the first locking element 22 fail.

[0052] When the lock is operated, i.e., when the first locking pawl is moved into or out of the locking position, the friction angle α is particularly important for a pleasant tactile feel. For the most comfortable operation, the friction angle α of the first locking element 22 is preferably set to an angle greater than 3°, particularly greater than 5°, and for example in the range between 5° and 15°, and particularly in the range between 8° and 12°, and for example 10°.

[0053] The locking state of the first locking element 22 is designed to be self-locking due to the spring force of the spring element 40 and the frictional resistance at the contact point with the pawl 40.

[0054] How based Fig. As can be seen in Figure 3, in the locking position the first locking element 22 with a curved, end-face contact surface 48 and thus along a curved first contour line 50 rests on the pawl 20 at a first contact point 52.

[0055] This first contact point 52 is at least approximately point-like in the depicted top view. The first contour line 50, and thus the contact surface 48, are suitably formed and, for example, constituted by a circular arc.

[0056] The friction angle α is generally defined by the angle between a first normal force vector N1 and a (first) pivot line D1. The first normal force vector N1 is defined by a normal to the first contour line 50 at the first contact point 52. The first pivot line B1 is defined by the connecting line between the first contact point 52 and a first axis of rotation R1 about which the first locking element 22 is pivotably mounted at the bearing point 34.

[0057] Similarly, the pawl 20, with its convexly curved end-face contact surface 58, rests against an associated concavely curved edge support surface of the locking receptacle 38, again at a second contact point 56. The pawl 20 forms a pawl angle β with the locking receptacle 38, and in particular with its edge support surface. The pawl angle β is defined by the angle between a second normal force vector N2 and a second pivot line D2, where the second normal force vector N2 is defined by a normal to the second contour line 54 at the second contact point 56. The second pivot line D2 is defined by the connecting line between the second contact point 56 and a second axis of rotation R2, which defines an axis of rotation of the bearing 32 about which the pawl 20 can pivot.The latch angle β is preferably set to an angle in the range between 5° and 40° and in particular an angle in the range between 10° and 30° and for example of 25°.

[0058] How specifically based on Fig. As can be seen from Figure 3, the bearing point 32 is formed by an eccentric bolt 60 on which the pawl 20 is mounted. The pawl 20 has a bearing eye 62 for this purpose, which in the exemplary embodiment is preferably designed as a bearing opening open on one side and approximately C-shaped overall. The pawl 20 therefore does not fully encircle the eccentric bolt. Rather, the bolt rests directly against the locking receptacle 38.

[0059] Due to the eccentric design of the bearing bolt, which is designed as an eccentric bolt 60, a rotation and eccentric axis R3 of the eccentric bolt 60 is spaced apart by an eccentricity E from the second rotation axis R2, about which the pawl 20 rotates.

[0060] The actuating mechanism is designed such that, in the locked position, and thus in the locked position of the pawl 20, it is clamped without play in the locking receptacle 38. For this purpose, a holding force exerted by the first locking element 22 is distributed by the selected geometry such that one force component presses the pawl 20 with its front, end-face contact surface 58 against the front edge support surface of the locking receptacle 58. Simultaneously, another force component ensures that the pawl 20 is pressed against the bearing point 32, so that the eccentric bolt 60 is thereby pressed without play against a rear support surface 64 of the locking receptacle 38 and is supported there. This rear support surface 64 is spaced a distance a from the front end-face contact surface 58, specifically from the second contact point 56 of the pawl 20.

[0061] One problem with such locking mechanisms, which have a large number of interacting components, is that manufacturing tolerances of the individual components, as well as assembly tolerances, can cause the relative positions of the various components to vary between different fittings 12. This, however, has a detrimental effect on the function of these typically highly precision-engineered components of the locking mechanism. The various tolerance effects can result in a cumulative tolerance effect that influences the distance a. If this distance is particularly small, for example, the locking pawl 20 must be pivoted far clockwise to be able to rest against the edge support surface of the locking receptacle 38. At the same time, this would require the first locking element 22 to be pivoted further clockwise to reliably hold the locking pawl 20 in its locked position.This would initially require an undesirably long (manual) operating path.

[0062] In general, the positioning of the first locking element 22, in particular the choice of the friction angle α and especially in conjunction with the selected design of the surface pairs of the pawl 20 and the first locking element 22 in the area of ​​the first contact point 52, defines both a locking torque and a release torque. The locking torque specifies the torque with which the first locking element 22 is held in its locked position. The release torque defines the torque required to pivot the first locking element 22 from the locked position to the unlocked position. There are fundamentally opposing requirements here. For the smoothest possible operation, a low release torque is generally desired. At the same time, a high locking torque is desired for maximum security.Due to these conflicting requirements, the overall tolerance range for the arrangement of these components is therefore small.

[0063] By designing the bearing bolt as an eccentric bolt 60, the particular advantage is achieved that the locking pawl 20 is reliably pressed against both the front edge surface of the locking receptacle 38 and the rear support surface 64, even with different values ​​for the distance a, i.e., with different tolerance sums. By rotating the eccentric bolt 60, the desired backlash-free bearing at the desired angles can therefore be easily adjusted for a given component combination, depending on the tolerance sum.

[0064] The eccentric bolt 60 therefore replaces the conventional one, in Fig. 2 cylindrical bearing bolts shown at bearing point 32.

[0065] The eccentric bolt 60 is shown in a perspective and enlarged view in Fig. Figure 4 shows the radial offset formed by the eccentricity E between the second axis of rotation R2 and an eccentric axis R3 of the eccentric bolt 60.

[0066] The eccentric bolt 60 has a cylindrical guide 66 extending concentrically to the second axis of rotation R2, through which a screw 24 (compare here) Fig. 2) is led to screw fastenings. Furthermore, the eccentric bolt 60 has an eccentric surface 70, which is formed, for example, by the lateral surface of a cylinder whose cylinder axis is formed by the eccentric axis R3.

[0067] The eccentric bolt 60 generally extends in the axial direction from a head region 72, which is particularly disc-shaped, to an opposite underside 74, which in the exemplary embodiment is designed as a radially extending annular surface. This surface is contoured and, for example, provided with radially extending ribs, so that a toothing 74 is formed as an underhead toothing.

[0068] The disc-shaped head region 72 has an indentation 78 on its outer edge. Otherwise, the head region 72 is preferably circular.

[0069] As in connection with Fig. As described in section 2, the second fitting adapter 16 on the backrest side has a housing with two housing parts, which are referred to here as lock carrier 28 and cover plate 30.

[0070] The fitting adapter 16 is provided pre-assembled as a pre-assembly unit and is attached as such during installation using the screws 24 (see below). Fig. 2) attached to the vehicle seat 2, specifically to the backrest frame 26. During this assembly, the two fitting adapters 14 and 16 interlock. The desired position of the locking pawl 20 is set by appropriately rotating the eccentric bolt 60 so that the locking pawl 20 is reliably clamped in the locking receptacle 38. This set rotational position of the eccentric bolt 60 is then fixed by means of one of the screws 24 (see also Fig. 5) Here, the underside 74, which is provided with the toothing 76, is clamped against a counter surface.

[0071] Fig. 5 shows a top view analogous to Fig. 3, but now with a closed housing and with a view of the cover plate 30.

[0072] The previously described indentation 78, in conjunction with a tab 80 formed on the housing, specifically on the lock carrier 28, serves as a transport lock. The tab 80 is designed to engage the head area 26, which is circular except for the indentation 78. For assembly, the eccentric bolt 60 is first oriented so that the indentation 78 is aligned with the tab 80, allowing the eccentric bolt 60 to be guided axially past the tab 80 and then secured axially by twisting, so that the head area 72 is engaged by the tab 80.

[0073] Furthermore, based on the Fig.Five markings 82A, 82B can be identified, which are, for example, color markings or embossed markings. These define a permissible adjustment range for the eccentric bolt 60. These are, in particular, bolt-side markings 82A on the head area 72 and housing-side markings 82B on the cover plate 30. In the exemplary embodiment, the adjustment range defined by the markings 82A, 82B extends over a predetermined angular range of, for example, 70–120° and specifically approximately 90°. Within this angular range, the eccentric bolt 60 can be rotated.

[0074] The claimed invention is not limited to the embodiments described above. Rather, other variants of the invention can also be derived by a person skilled in the art within the scope of the disclosed claims without departing from the subject matter of the claimed invention. In particular, all individual features described in connection with the various embodiments can also be combined in other ways within the scope of the disclosed claims without departing from the subject matter of the claimed invention. Reference symbol list 2 vehicle seats 4 first seating element, seat part 6 second seat element, backrest 8 Seating area 10 Seat base 12 fittings 14 first fitting adapter, seat adapter 16 second fitting adapter, backrest adapter 18 Locking disc 20 locking pawls 22 first locking element 24 screws 26 backrest frames 28 lock carriers 30 Cover plate 32 Bearing point of the locking pawl 34 Bearing point of the first locking element 36 second locking element 38 Lock recording 40 spring element 42 Spring element 48 contact area 50 First contour line of the first locking element 52 first contact point of the first locking element 54 second contour line of the locking pawl 56 second contact point of the locking latch 58 site area 60 eccentric bolts 62 Bearing eye 64 rear support surface 66 cylindrical guide 70 eccentric area 72 Head area 74 Underside 76 gear teeth 78 indentation 80 tab 82A, 82B markings P Backrest position A. Reclining position, upright position EE reclining position, easy-entry position N1 Normal force vector of the first locking element N2 normal force vector of the pawl D1 pivot line of the first locking element D2 Pivot line of the pawl R1 axis of rotation of the first locking element R2 Pivot axis of the pawl R3 eccentric axis E eccentricity a distance 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 2022 208 805 A1

[0002]

Claims

[1] Fitting (12) for a vehicle seat (2) comprising a first seat element (4), in particular a seat part, and a second seat element (6), in particular a backrest - a first fitting adapter (14) with a locking part (18), wherein the first fitting adapter (14) is fixedly arranged on the first seat element (4) in the assembled state and - a second fitting adapter (16) with a locking latch (20), wherein the second fitting adapter (16) is fixedly arranged on the second seat element (4) in the assembled state and is pivotably mounted relative to the first fitting adapter (14), - wherein the locking pawl (20) is pivotably mounted on a bearing bolt between an open position releasing the pivoting movement and a locking position blocking the pivoting movement, - wherein the locking pawl (20) engages in a locking receptacle (38) of the locking part (18) in the locking position (S), characterized by, that the bearing bolt is designed as an eccentric bolt (60) via which a tolerance play of the pawl (20) can be adjusted. [2] Fitting (12) according to the preceding claim, characterized by , that on the second fitting adapter (16) a first locking element (22) adjustable between a locking position and an unlocking position is arranged, which in the locking position locks the locking pawl (20) in the locking position. [3] Fitting (12) according to the preceding claim, characterized by, that the first locking element (22) in its locking position is supported at a first contact point (52) on the pawl (20), wherein a friction angle (α) greater than 3°, in particular greater than 5°, is formed between a first normal force vector (N1) at the first contact point (52) and a first pivot line (D1), wherein the first pivot line (D1) extends from the first contact point (52) through a first axis of rotation (R1) about which the first locking element (22) can be pivoted, wherein the friction angle is preferably in the range between 5° and 15°. [4] Fitting (12) according to any one of the preceding claims, characterized by, that the pawl (20) has a contact surface (58) opposite the eccentric bolt (18), with which it is supported in the locked position on the locking receptacle (38) at a second contact point (56), wherein a pawl angle (β) greater than 0° and in particular greater than 10° is formed between a second normal force vector (N2) at the second contact point (56) and a second pivot line (D2), wherein the second pivot line (D2) extends from the contact point through a second axis of rotation (R2) about which the pawl (20) can be pivoted. [5] Fitting (12) according to the preceding claim, characterized by , that the latch angle (β) lies particularly in a range between 5° and 40° and particularly in a range between 10° and 30° . [6] Fitting (12) according to any one of the preceding claims, characterized by , that the eccentric bolt (60) is fastened by means of a screw (24). [7] Fitting (12) according to the preceding claim, characterized by that the screw (24) can be loosened even after the seat has been installed and the eccentric bolt (60) is adjustable. [8] Fitting (12) according to any one of the preceding claims, characterized by , that the eccentric bolt (60) is clamped with a bottom surface (74) against a counter surface, wherein at least one component selected from bottom surface (74) and counter surface has a toothing (76) for preventing the eccentric bolt (60) from rotating. [9] Fitting (12) according to any one of the preceding claims, characterized by , that a permissible adjustment range for the eccentric bolt (60) is indicated by a marking (82A, 82B) on the eccentric bolt (60) and / or on the second fitting adapter (16). [10] Fitting (12) according to any one of the preceding claims, characterized by, that a transport safety device is provided by which the eccentric bolt (60) is fixed to a component of the second fitting adapter (16) before the eccentric bolt (60) is attached. [11] Fitting (12) according to the preceding claim, characterized by , that to form the transport securing mechanism, the eccentric bolt (60) has a head area (72) with an edge-side indentation (78) and a tab (80) projecting radially beyond the disc-shaped head area is formed on the second fitting adapter (16), wherein the eccentric bolt (60) is guided axially past the tab (80) by means of the indentation (78) and forms a positive locking mechanism in the axial direction by subsequent rotation with the tab (80). [12] Fitting (12) according to any one of the preceding claims, characterized by, that at least some of its components, especially the eccentric bolt (60), the locking pawl (20) and the locking receptacle (38) and in particular all its components are paint-free. [13] Fitting (12) according to any one of the preceding claims, characterized by , that the pawl (20) is clamped without play in its locking position in the locking receptacle (38). [14] Fitting (12) according to any of the preceding claims as well as according to claim 2, characterized by , that a second locking element (36) is adjustable on the second fitting adapter (16), which is designed as a crash locking element. [15] Vehicle seat (2) with a fitting (12) according to one of the preceding claims.

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