Assembly part for vehicle seat and vehicle seat

Abstract

The invention relates to a fitting (100) for a vehicle seat (1), comprising a first fitting part (110) having a ring gear (112) and a second fitting part (120) having a gear (122), the gear (122) being in meshing engagement with the ring gear (112), and the first fitting part (110) and the second fitting part (120) being pivotably rotatable relative to one another about an axis (A), wherein the eccentric (150) makes it possible to drive a relative rolling contact movement between the gear (122) and the ring gear (112), the eccentric (150) having two wedge segments (152) and at least one drive segment (166; 280, 290), the at least one driver segment (166; 280, 290) has at least one lubricant reservoir (168; 168) filled with a lubricant; 284, 294) for a motor vehicle. The invention also relates to a vehicle seat (1).

Description

Technical Field

[0001] The present invention relates to a fitting for a vehicle seat, which comprises a first fitting part having a toothed ring and a second fitting part having a gear, the gear being in meshing engagement with the toothed ring, and the first fitting part and the second fitting part being rotatable relative to each other about an axis in a swingable manner, because an eccentric member enables a relative rolling contact movement between the gear and the toothed ring, the eccentric member having two wedge-shaped segments and at least one driver segment arranged between the wedge-shaped segments. The present invention also relates to a vehicle seat. Background Art

[0002] WO2005 / 077704A2 discloses a fitting for a vehicle seat, comprising a first fitting part, a second fitting part gear-connected to the first fitting part, and an eccentric member defined by a driver ring and two wedge-shaped segments supporting each other, for driving a rolling contact movement of the second fitting part on the first fitting part. During the rolling contact movement, the driver ring slides along a drawn collar of the adjacent fitting part. The driver ring has a driver segment mounted between the narrow sides of the wedge-shaped segments. The driver segment has internal teeth, in which external teeth of a driver bushing are in form-fitting engagement to drive the driver ring. The external teeth of the driver bushing completely enclose the internal teeth of the driver segment, thereby providing a surrounding cylindrical surface for rotatably mounting the driver ring on the outside of the drawn collar. There is no lubricant receiving means for this rotational support point.

[0003] WO2012 / 110213A2 discloses a fitting for a vehicle seat, comprising a first fitting part and a second fitting part that are rotatable relative to each other and are gear-connected to each other by a toothed ring and a gear meshing with the toothed ring, and comprising an eccentric member that is driven by a driver and rotates in a circumferential direction for driving a relative rolling contact movement between the gear and the toothed ring. The driver has a hub and a driver segment that is mounted with a clearance between the narrow sides of two wedge-shaped segments of the eccentric member. The driver is formed integrally. The radially inward-facing surface of the driver segment slides on a drawn collar of the adjacent fitting part. There is no lubricant receiving means for this contact surface.

[0004] DE19839296 A1 discloses preferred lubricants, in particular for the above-mentioned fittings of vehicle seats. The lubricants are optimized to avoid chattering vibrations and to minimize the coefficient of friction and wear in such fittings.

[0005] Technical Problem

[0006] The present invention solves the problem of improving the type of fitting mentioned in the introduction, in particular improving the storage and uniform distribution of lubricant within the fitting throughout its service life, thereby reducing wear of the fitting. Furthermore, the present invention aims to provide a vehicle seat including at least one fitting optimized in this way. Summary of the Invention

[0007] According to the present invention, this problem is solved by a fitting for a vehicle seat, the fitting including a first fitting part having a toothed ring and a second fitting part having a gear, the gear meshing with the toothed ring, and the first fitting part and the second fitting part being rotatable relative to each other about an axis in a swingable manner, wherein an eccentric member enables a relative rolling contact movement between the gear and the toothed ring, the eccentric member having two wedge-shaped segments and at least one driver segment arranged between the wedge-shaped segments, and at least one driver segment having at least one lubricant reservoir filled with lubricant.

[0008] Since at least one driver segment has at least one lubricant reservoir filled with lubricant, storage and uniform distribution of lubricant within the fitting throughout its service life are provided, and thereby wear of the fitting is minimized.

[0009] At least one lubricant reservoir may be partially filled with lubricant. At least one lubricant reservoir is preferably completely filled with lubricant at the start of the service life of the fitting. During the service life of the fitting, the lubricant may leave the lubricant reservoir to supply lubricant to the fitting, in particular continuously supply lubricant to a sliding bearing between at least one driver segment and at least one of the two fitting parts during the service life.

[0010] At least one driver segment may have a first contact surface. At least one driver segment may have a first contact surface and a second contact surface. The at least one driver segment may be radially inwardly supported and slidably mounted on one of the two fitting parts through the first contact surface. The at least one driver segment may be radially outwardly supported and slidably mounted on the other of the two fitting parts through the second contact surface.

[0011] At least one driver segment may be radially inwardly supported and slidably mounted on a collar of the second fitting part through the first contact surface. The at least one driver segment may be radially outwardly supported and slidably mounted on a sliding bearing bushing of the first fitting part through the second contact surface.

[0012] The first contact surface may have at least one opening through which the lubricant may leave the at least one lubricant reservoir. The second contact surface may have at least one opening through which the lubricant may leave the at least one lubricant reservoir.

[0013] At least one lubricant reservoir can be formed by a recess in the first contact surface. At least one lubricant reservoir can be formed by a recess in the second contact surface. At least one lubricant reservoir can be formed by corresponding recesses in the first contact surface and the second contact surface. The recesses can extend axially over the entire width of at least one driver segment.

[0014] The eccentric can have exactly one driver segment. The eccentric can have exactly one driver segment with at least one lubricant reservoir. If the exactly one driver segment has exactly three lubricant reservoirs, the lubricant is distributed particularly effectively.

[0015] The eccentric can have two circumferentially spaced-apart driver segments. This allows for material and weight savings compared to exactly one driver segment. Each of the two driver segments can have at least one lubricant reservoir. Each of the two driver segments preferably has exactly one lubricant reservoir.

[0016] The lubricant can be a grease, as known for example from DE19839296 A1. The lubricant can be a liquid lubricant. The lubricant can be a solid lubricant.

[0017] The technical problem is also solved by a vehicle seat which includes a seat part, a backrest, and at least one fitting according to the invention, the backrest being tiltably adjustable relative to the seat part by means of the at least one fitting. Since the structural components of the seat part and the backrest are usually non-removably welded to the corresponding associated fitting parts, the service life of the vehicle seat is limited by the service life of the fitting. Thus, the invention not only extends the service life of the fitting, but also extends the service life of the vehicle seat (compared to vehicle seats known from the prior art).

[0018] In summary and in other words, in the case of a fitting according to the invention, the driver, in particular the driver ring of the driver, in particular at least one driver segment of the driver ring, has at least one grease reservoir, in particular at least one slot filled with grease. During the entire service life of the fitting, re-greasing, in particular in the driver ring, in particular in the region of the gear, is carried out using the grease stored in the slots. Description of the Drawings

[0019] The following is based on Figure 2 the fitting shown in and known from two advantageous exemplary embodiments shown in the prior art and in other figures. However, the invention is not limited to these exemplary embodiments. In the figures:

[0020] Figure 1: A schematic view of a vehicle seat according to the present invention is shown,

[0021] Figure 2 : An exploded view of an assembly known from the prior art is shown,

[0022] Figure 3 : A cross-sectional view of an assembly according to the present invention according to a first exemplary embodiment is shown, and

[0023] Figure 4 : A drive ring of an assembly according to the present invention according to a second exemplary embodiment is shown. Detailed Description

[0024] Figure 1 A vehicle seat 1 for a motor vehicle according to the present invention is shown. The vehicle seat 1 has a seat part 3 and a backrest 4 that is tilt-adjustable relative to the seat part 3. To adjust the tilt of the backrest 4, a drive shaft 7 arranged horizontally in the transition region between the seat part 3 and the backrest 4 is rotated manually, for example by a handwheel 5, or rotated by a motor, for example by an electric motor. On both sides of the vehicle seat 1, the drive shaft 7 engages in a respective assembly 100 according to the present invention for combined rotation. The drive shaft 7 defines an axis A and the direction indication of the cylindrical coordinate system used below. As is conventional in a cylindrical coordinate system, the radial direction is perpendicular to the axis A.

[0025] Figure 2 An exploded view of an assembly 10 known from the prior art is shown, and this exploded view will be described below for better understanding of the assembly 100 according to the present invention.

[0026] The assembly 10 known from the prior art has a first assembly part 11 and a second assembly part 12. The first assembly part 11 and the second assembly part 12 are rotatable relative to each other about the axis A in a swingable manner. The two assembly parts 11 and 12 can each approximately form a disc shape. The two assembly parts 11 and 12 are made of metal, especially steel, which can be hardened at least in certain regions. To absorb axial forces, that is, to axially hold the assembly parts 11 and 12 together, a snap ring 13 is provided.

[0027] The snap ring 13 is fixedly welded to the outer edge portion of the first assembly part 11. The radially inward edge portion of the snap ring 13 engages on the radially outer edge region of the second assembly part 12 without disturbing the relative rotatability of the two assembly parts 11 and 12. The snap ring 13 and the first assembly part 11 fixedly connected thereto thus hold the second assembly part 12, and the second assembly part 12 can move relative to the snap ring and the first assembly part. Structurally, the two assembly parts 11 and 12 (together with the snap ring 13) form a disc-shaped unit.

[0028] When installing the vehicle seat 1, the first fitting part 11 is fixedly connected to the structure of the backrest 4. The second fitting part 12 is fixedly connected to the structure of the seat part 3. However, the distribution of the fitting parts 11 and 12 can also be interchanged, that is, the first fitting part 11 can alternatively be connected to the seat part 3, and the second fitting part 12 can correspondingly be connected to the backrest 4. The fitting 10 is located in the force flow between the backrest 4 and the seat part 3.

[0029] The fitting 10 is designed as a gear fitting, in which the first fitting part 11 and the second fitting part 12 are connected to each other by gears for adjustment and fixation, more precisely, in the present case, by self-locking eccentric planetary gears, as described, for example, in DE 44 36 101 A1.

[0030] In order to construct the gear, exactly one external gear 16 is formed on the second fitting part 12, and exactly one internal gear ring 17 is formed on the first fitting part 11, and the gear and the gear ring mesh with each other. The diameter of the addendum circle of the external teeth of the gear 16 is at least one tooth height smaller than the diameter of the addendum circle of the internal teeth of the gear ring 17. An appropriate difference in the number of teeth of at least one tooth of the gear 16 and the gear ring 17 allows the gear ring 17 to perform a rolling contact movement on the gear 16. The gear 16 forms the radial outer edge of the second fitting part 12.

[0031] The second fitting part 12 has a collar 19, which is concentrically arranged with the gear 16. The collar 19 is integrally formed as a drawn collar on the second fitting part 12, or is fastened to the second fitting part 12 as a separate sleeve. The drive 21 is rotatably mounted in the collar 19 through a hub 22. A hole 23 for receiving the drive shaft 7 is centrally provided in the hub 22 of the drive 21. The profile of the hole 23 is designed to match the profile of the drive shaft 7, which is a spline shaft profile in the present case. After its hub 22, the drive 21 has a cover plate 25, which is integrally formed with the hub 22 and has a larger diameter than the hub 22.

[0032] Two wedge segments 27 support on the collar 19 with their curved inner surfaces and mount the first fitting part 11 with their curved outer surfaces. For this purpose, the socket of the first fitting part 11 is lined with a sliding bearing bushing 28, which is preferably pressed in place for joint rotation, and the outer surface of the wedge segment 27 bears on the sliding bearing bushing 28. The terms "support" and "mount" are not limited to a specific direction of the force flow through the fitting 10, as this direction depends on the installation of the fitting 10.

[0033] The drive 21 has a drive segment 29 which is radially spaced from the hub 22 and is mounted with a clearance between the narrow sides of the wedge segments 27. The wedge segments 27, whose wide sides face each other, receive the respective angled end fingers 35a of the ω-shaped spring 35 in corresponding recesses. The spring 35 acts on the wedge segments 27 in the circumferential direction, in particular to push them apart, and the wide sides of the wedge segments 27 are able to come into contact with each other and act on each other during adjustment of the assembly 10. The drive 21 is mounted in the collar 19 and is axially fixed on the outside of the second assembly part 12 by means of a snap ring 43. On the outside of the first assembly part 11, a sealing ring 44 is provided between its radial outer edge and the cover plate 25, and the sealing ring 44 is connected to the cover plate 25.

[0034] The wedge segments 27 (and the spring 35) form an eccentric which, in the continuation of its eccentric direction, presses the gear 16 into the toothing 17 at the engagement point. When the drive shaft 7 is (repeatedly) rotated to provide drive, the torque is transmitted to the drive 21 and via the drive segment 29 to the eccentric, which rotates in the sliding bearing bush 28 as it shifts in the direction of eccentricity, so that the engagement point of the gear 16 in the toothing 17 is displaced, and this manifests itself as a wobbling rolling contact movement between the gear 16 and the toothing 17, i.e. as a relative rotation with a superimposed wobbling movement. Thus, the inclination of the backrest 4 can be adjusted infinitely variably between a plurality of use positions. The eccentricity caused by the eccentric 16 utilises the rotation of the engagement point about the axis A, which also gives rise to the name of eccentric planetary gear or wobble gear for the assembly 10.

[0035] Figure 2 The assembly 10 shown and known from the prior art is preferably manually driven. In terms of the structure and function of the gears, the assembly 10 corresponds to assemblies known from the prior art, which are preferably driven by a gear motor with a self-locking design.

[0036] In order to improve the dynamic operating behavior of the assembly 10, especially in the case of manual actuation, the blocking spring 51 is preferably provided as a blocking element, as disclosed, for example, in DE19548809 C1. In the present case, the blocking spring 51 interacts with the locking teeth 55 formed on the first assembly part 11. The blocking spring 51, which is movably mounted above the axial projection of the sliding bearing bushing 28, blocks the wedge segment 27 respectively in the non-actuated state of the actuator 21 (wherein the blocking spring 51 blocks the spring 35 by bearing on the end finger 35a), and is released by the actuated actuator 21. In the blocking state, the blocking spring 51 engages form-fittingly in the locking teeth 55, resulting in the blocking spring 51 being unable to rotate relative to the locking teeth 55. In the non-blocking state, the blocking spring 51 disengages from the locking teeth 55, resulting in the blocking spring 51 being able to rotate relative to the locking teeth 55. The blocking spring 51 does not roll in the locking teeth 55 in any state. If the assembly is operated with a gear motor with a self-locking design, the blocking spring 51 can be omitted.

[0037] Figure 3 A cross-sectional view of an assembly 100 according to the present invention according to a first exemplary embodiment is shown. The assembly 100 corresponds in its structure and its function to the assembly 10 known from the prior art shown and described above, unless otherwise described below. Figure 2 as shown in and

[0038] The assembly 100 has a first assembly part 110 and a second assembly part 120, which can rotate relative to each other about a rotation axis A in a manner described in more detail below, wherein an oscillating movement is superimposed on the rotational movement. The two assembly parts 110 and 120 can each approximately form a disc shape. The two assembly parts 110 and 120 are preferably made of metal, especially steel, which can be hardened at least in regions. In order to absorb axial forces, i.e., to axially hold the two assembly parts 110 and 120 together, snap rings are provided, Figure 3 not shown in

[0039] The buckle is fixedly connected to one of the two fitting parts 110, 120, and in the present exemplary embodiment, it is connected to the first fitting part 110. The radially inward circumferential edge region is used to enable the buckle to radially engage externally on the other of the two fitting parts 110, 120 that are movable relative to the buckle, without disturbing the relative rotational movement of the two fitting parts 110 and 120 relative to each other. Here, it is the second fitting part 120. The buckle and the first fitting part 110 or the second fitting part 120 fixedly connected thereto thus hold the other of the two fitting parts 110, 120, which is movable relative to the buckle and the first fitting part. Structurally, the two fitting parts 110, 120 together with the buckle form a disc-shaped unit.

[0040] The fitting 100 is designed as a gear fitting, in which the first fitting part 110 and the second fitting part 120 are connected to each other by gears for adjustment and fixation. More precisely, in the present case, they are connected to each other by a self-locking eccentric planetary gear, as described, for example, in DE10144840 A1. To construct the gear, an internal tooth ring 112 is formed on the first fitting part 110, and an external tooth gear 122 is formed on the second fitting part 120, and the tooth ring and the gear mesh with each other.

[0041] One of the two fitting parts 110, 120, in the present case the second fitting part 120, has a collar 124. The collar 124 is configured to be concentric with the gear 122. The collar 124 can be formed as a drawn collar on the second fitting part 120 (i.e., formed integrally) or fastened to the second fitting part 120 as a separate sleeve.

[0042] Each of the two curved wedge segments 152 has a curved inner surface and a curved outer surface. The two wedge segments 152 are supported on the collar 124 with the curved inner surfaces. The wedge segments 152 use the curved outer surfaces to mount the other of the two fitting parts 110, 120, in the present case the first fitting part 110. For this purpose, the receiving opening of the last-mentioned fitting part (in the present case, the receiving opening 114 of the first fitting part 110) is lined with a sliding bearing bushing 116, which is preferably pressed in place for joint rotation, and the outer surfaces of the two wedge segments 152 bear on the sliding bearing bushing 116.

[0043] The respective first end of each wedge segment 152 has a surface extending substantially in the radial direction, hereinafter referred to as the wide side. The end of each wedge segment 152 opposite the wide side in the circumferential direction also has a surface extending substantially in the radial direction, hereinafter referred to as the narrow side. The wide side is larger than the narrow side in the radial direction.

[0044] The wedge-shaped segments 152, whose wide sides face each other, receive the respective angled end fingers of a biased and, for example, omega-shaped spring with corresponding recesses 154, which are not shown in the drawing. The spring acts on the wedge-shaped segments 152 in the circumferential direction in order to push them apart, where the wide sides of the wedge-shaped segments 152 can contact each other and act on each other during the adjustment of the assembly 100.

[0045] As previously described, the drive shaft 7 is rotatable about the axis of rotation A to adjust the tilt angle of the backrest 4 about the axis of rotation A. The drive 160 serves to transmit the rotational movement of the drive shaft 7 to the eccentric 150 having two wedge-shaped segments 152. The drive 160 has a drive hub 162 and a drive ring 164 connected to the drive hub 162 for joint rotation, in particular via corresponding teeth. In the present case, the drive 160 is formed in two parts by the drive hub 162 and the drive ring 164, which are separately formed components, which are connected to each other for joint rotation, in particular in a form-fitting manner by plug-in teeth. The drive 160 is preferably made of plastic.

[0046] The drive ring 164 has drive segments 166, which are arranged (with play when viewed in the circumferential direction) between the narrow sides of the wedge-shaped segments 152. The drive segments 166 preferably have the shape of a hollow cylindrical segment. The drive segments 166 are arranged radially between the collar 124 and the sliding bearing bush 116.

[0047] The drive segment 166 has a first contact surface 167.1 and a second contact surface 167.2. The first contact surface 167.1 faces radially inwards. The second contact surface 167.2 faces radially outwards. The drive segment 166 can be radially inwardly supported and slidably mounted on the collar 124 via the first contact surface 167.1. The drive segment 166 can be radially outwardly supported and slidably mounted in the sliding bearing bush 116 of the first assembly part 110 via the second contact surface 167.2 of the drive segment 166.

[0048] The drive segment 166 has three lubricant reservoirs 168, each filled with lubricant. In the present case, the lubricant reservoirs 168 are each in the form of depressions in the drive segment 166. The lubricant reservoirs 168 are formed equidistantly from each other circumferentially in the drive segment 166. In each case, at least one of the lubricant reservoirs 168 can extend axially over the entire width of the drive segment 166.

[0049] The lubricant reservoirs 168 are each completely filled with a lubricant, in particular grease, at the start of the service life of the assembly 100. Each lubricant reservoir 168 has an opening through which the lubricant can leave the lubricant reservoir 168. During the service life of the assembly 100, the lubricant continuously leaves the lubricant reservoir 168 and lubricates the sliding bearing point between the first contact surface 167.1 of the drive section 166 and the collar 124 of the second assembly part 120.

[0050] The opening of each lubricant reservoir 168 is in the first contact surface 167.1. The opening of each lubricant reservoir 168 is smaller in the circumferential direction than the maximum extent of the lubricant reservoir 168 in the circumferential direction.

[0051] The eccentric 150 is formed by two wedge-shaped segments 152 and the drive section 166. In the present case, the eccentric 150 has a substantially circular outer contour which is offset with an eccentricity relative to the axis of rotation A. The eccentric 150 presses the teeth of the gear 122 and the toothed ring 112 against each other to the maximum depth in the direction of eccentricity at the engagement point E. The depth of the tooth engagement decreases in the circumferential direction on both sides of the engagement point E. In the region radially opposite the engagement point E, the teeth of the gear 122 and the toothed ring 112 are completely disengaged and are at the maximum possible distance from each other.

[0052] The drive hub 162 of the drive 160 is rotatably mounted in the collar 124 about the axis of rotation A. The drive hub 162 is centrally provided with a bore 163 for receiving the drive shaft 7. The profile of the bore 163 is designed to match the profile of the drive shaft 7, which is in the present case a splined shaft profile. The drive hub 162 also has a cover disk around the circumference, Figure 3 not shown in the figure. The outer diameter of the cover disk is greater than the inner diameter of the collar 124. On the outside of the assembly part (in the present case the first assembly part 110) having the sliding bearing bush 116, a sealing ring, for example made of rubber or soft plastic, is provided between its radially central region and the cover disk, and the sealing ring is connected, in particular clamped, to the cover disk.

[0053] The drive 160 is axially fixed on the outside of the assembly part having the collar 124, preferably by a snap ring 174. The snap ring 174 extends in the axial direction along a part of the drive hub 162 such that the drive hub 162 does not directly abut against the inner side of the collar 124, but is mounted in the collar 124 by the insertion of the snap ring 174 (and the drive 160 is thus mounted on the second assembly part 120).

[0054] During operation, the drive shaft 18 rotates (repeatedly) about the axis of rotation A, and the torque is first transferred to the drive 160 in the manner described in more detail below, and then transferred by the drive segment 166 to the wedge segment 152 of the eccentric 150. The eccentric 150 rotates relative to the two fitting parts 110, 120, causing a shift in the eccentric direction and thus a circumferential shift of the engagement point E, which results in an oscillating rolling contact movement of the teeth of the toothed ring 112 and the gear 122. Thereby, the inclination of the backrest 4 can be adjusted infinitely variably between a plurality of use positions.

[0055] Figure 4 The drive ring 264 of the drive of the fitting according to the invention according to the second exemplary embodiment is shown. The fitting of the second exemplary embodiment corresponds in its structure and its function to Figure 3 the fitting 100 shown and described above, unless otherwise described below.

[0056] The drive ring 264 has a base plate 270. The base plate 270 is mostly annular and has teeth 272 radially inward for connection to a drive hub ( Figure 4 not shown in the figure) for joint rotation.

[0057] The drive ring 264 also has two drive segments 280, 290 which project from the base plate 270 in the axial direction and are spaced apart in the circumferential direction. The two drive segments 280, 290 preferably have the shape of hollow cylindrical segments. The drive segments 280, 290 are each radially arranged between the collar of the first fitting part and the sliding bearing bush of the first fitting part. When viewed in the circumferential direction, the two drive segments 280, 290 are arranged with a clearance between the narrow sides of the two wedge segments of the fitting and together with the wedge segments form an eccentric.

[0058] The two drive segments 280, 290 are preferably formed identically but are arranged offset from each other in the circumferential direction. Due to the identical design, only the first drive segment 280 of the two drive segments 280, 290 will be described in detail below. However, this description also applies to the second drive segment 290 of the two drive segments 280, 290.

[0059] The first drive segment 280 has a first contact surface 282.1 and a second contact surface 282.2. The first contact surface 282.1 faces radially inwards. The second contact surface 282.2 faces radially outwards. The first drive segment 280 can be radially inwardly supported and slidably mounted on the collar by the first contact surface 282.1. The first drive segment 280 can be radially outwardly supported and slidably mounted in the sliding bearing bush of the first fitting part by the second contact surface 282.2 of the first drive segment 280.

[0060] The first drive segment 280 has a lubricant reservoir 284 filled with lubricant. In the present case, the lubricant reservoir 284 is in the form of a recess in the first drive segment 280. The lubricant reservoir 284 is formed circumferentially in the middle of the first drive segment 280. The lubricant reservoir 284 can extend axially in each case over the entire width of the first drive segment 280.

[0061] The lubricant reservoir 284 is completely filled with lubricant, in particular grease, at the start of the service life of the assembly in each case. The lubricant reservoir 284 has an opening through which the lubricant can leave the lubricant reservoir 284. During the service life of the assembly, the lubricant continuously leaves the lubricant reservoir 284 and lubricates the sliding bearing point between the first contact surface 282.1 of the drive segment 280 and the collar of the second assembly part.

[0062] The opening of the lubricant reservoir 284 is in the first contact surface 282.1. The opening of the lubricant reservoir 284 is smaller in the circumferential direction than the maximum extent of the lubricant reservoir 284 in the circumferential direction.

[0063] Due to the identical design of the two drive segments 280, 290, the description given above also applies to the first contact surface 292.1, the second contact surface 292.2 and the lubricant reservoir 294 of the second drive segment 290.

[0064] In a variant of the exemplary embodiment, the wedge segment and / or the collar of the second assembly part can also have a lubricant reservoir. It is also conceivable that only the wedge segment and / or the collar of the second assembly part have a corresponding lubricant reservoir, although from a manufacturing technology perspective, providing a lubricant reservoir in the wedge segment and / or the collar is more complex. Therefore, the above exemplary embodiment is preferred.

[0065] List of reference signs

[0066] 1 Vehicle seat

[0067] 3 Seat part

[0068] 4 Backrest

[0069] 5 Handwheel

[0070] 7 Drive shaft

[0071] 10 Assembly (prior art)

[0072] 11 First assembly part

[0073] 12 Second assembly part

[0074] 13 Snap ring

[0075] 16 Gear

[0076] 17 Tooth Ring

[0077] 19 Collar

[0078] 21 Driver

[0079] 22 Hub

[0080] 23 Hole

[0081] 25 Cover Disc

[0082] 27 Wedge Segment

[0083] 28 Sleeve Bearing Bush

[0084] 29 Driver Segment

[0085] 35 Spring

[0086] 35a End Finger

[0087] 43 Snap Ring

[0088] 44 Sealing Ring

[0089] 51 Stop Spring

[0090] 55 Locking Tooth

[0091] 100 Assembly (According to the First Exemplary Embodiment of the Present Invention)

[0092] 110 First Assembly Part

[0093] 112 Tooth Ring

[0094] 114 Receiving Opening

[0095] 116 Sleeve Bearing Bush

[0096] 120 Second Assembly Part

[0097] 122 Gear

[0098] 124 Collar, Drawn Collar

[0099] 150 Eccentric

[0100] 152 Wedge Segment

[0101] 154 Notch

[0102] 160 Driver

[0103] 162 Driver Hub

[0104] 163 Hole

[0105] 164 Drive ring

[0106] 166 Drive segment

[0107] 167.1 First contact surface

[0108] 167.2 Second contact surface

[0109] 168 Lubricant reservoir

[0110] 174 Snap ring

[0111] 264 Drive ring

[0112] 270 Substrate

[0113] 272 Tooth

[0114] 280 First drive segment

[0115] 282.1 First contact surface

[0116] 282.2 Second contact surface

[0117] 284 Lubricant reservoir

[0118] 290 Second drive segment

[0119] 292.1 First contact surface

[0120] 292.2 Second contact surface

[0121] 294 Lubricant reservoir

[0122] A Rotating shaft

Claims

1. A fitting (100) for a vehicle seat (1), comprising a first fitting part (110) having a toothed ring (112) and a second fitting part (120) having a gear wheel (122), the gear wheel (122) being in meshing engagement with the toothed ring (112), and the first fitting part (110) and the second fitting part (120) being rotatable relative to each other about an axis (A), wherein an eccentric (150) enables a relative rolling contact movement between the gear wheel (122) and the toothed ring (112) to be driven, the eccentric (150) having two wedge segments (152) and at least one driver segment (166; 280, 290) being arranged between the wedge segments (152), characterized in that The at least one driver segment (166; 280, 290) has at least one lubricant reservoir (168; 284, 294) filled with lubricant.

2. The assembly (100) according to claim 2, characterized in that: The at least one lubricant reservoir (168; 284, 294) is completely filled with lubricant, in particular at the beginning of the service life of the assembly (100), and the lubricant can leave the lubricant reservoir (168; 284, 294) during the service life of the assembly (100).

3. The assembly (100) according to claim 1 or 2, characterized in that: The at least one driver segment (166; 280, 290) has a first contact surface (167.1; 282.1, 292.1) and a second contact surface (167.2; 282.2, 292.2), the at least one driver segment (166; 280, 290) being supported radially inwardly and slidably mounted on one of the two assembly parts (110, 120) by means of the first contact surface (167.1; 282.1, 292.1) and being supported radially outwardly and slidably mounted on the other of the two assembly parts (110, 120) by means of the second contact surface (167.2; 282.2, 292.2).

4. The assembly (100) according to claim 3, characterized in that: The at least one driver segment (166; 280, 290) is supported radially inwardly and slidably mounted on the collar (124) of the second fitting part (120) via the first contact surface (167.1; 282.1, 292.1).

5. The assembly (100) according to claim 3 or 4, characterized in that: The first contact surface (167.1; 282.1, 292.1) and / or the second contact surface (167.2; 282.2, 292.2) have an opening through which the lubricant can leave the at least one lubricant reservoir (168; 284, 294).

6. The assembly (100) according to claim 5, characterized in that: The at least one lubricant reservoir (168; 284, 294) is formed by a recess in the first contact surface (167.1; 282.1, 292.1) and / or a recess in the second contact surface (167.2; 282.2, 292.2).

7. The fitting (100) according to any one of the preceding claims, characterized in that The recess extends in the axial direction over the entire width of the at least one driver segment (166; 280, 290).

8. Fitting (100) according to one of the preceding claims, characterized in that The eccentric (150) therefore has exactly one driver segment (166) which has at least one lubricant reservoir (168), in particular three lubricant reservoirs (168).

9. The assembly (100) according to any one of claims 1 to 7, characterized in that: The eccentric has two circumferentially spaced apart driver segments (280, 290), each of the two driver segments (280, 290) having at least one lubricant reservoir (284, 294), in particular having exactly one lubricant reservoir (284, 294).

10. A vehicle seat (1) comprising a seat part (3), a backrest (4) and at least one fitting (100) according to any one of the preceding claims, the backrest (4) being connected to the seat part (3) in an inclination-adjustable manner via the at least one fitting (100).

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