RU2448847C2

RU2448847C2 - Automotive seat fitting

Info

Publication number: RU2448847C2
Application number: RU2009148095/11A
Authority: RU
Inventors: Мартин ШТИЛЛЕКЕ (DE); Мартин ШТИЛЛЕКЕ; Дирк БРАССАТ (US); Дирк БРАССАТ; Билл ТАЕНС (US); Билл ТАЕНС; Тони ФЕРЕНЦ (US); Тони ФЕРЕНЦ
Original assignee: Кайпер Гмбх Унд Ко. Кг
Priority date: 2007-11-20
Filing date: 2008-11-06
Publication date: 2012-04-27

Abstract

FIELD: transport.

SUBSTANCE: invention relates to automotive seat with adjustable backrest. Fitting 10 comprises first part 11 and second part 12, cam 27, drive element 21 to drive said cam and fastening ring 43 to fasten element 21 on axle. Gearing is arranged between fitting first and second parts 11, 12 to allow relative rolling there between. Revolving cam 27, when actuated, actuates aforesaid relative rolling. Element 21 drives cam 27 to allow aforesaid relative rolling. Driving element 21 comprises sleeve to support element 21 in fitting first part 11. Sleeve 22 terminates in bead 22b. Fastening ring 43 is squeesed on sleeve 22 to envelope bead 22b. Bead 22b or fastening ring 43 has variable radius.

EFFECT: simplified backrest tilt adjustment.

16 cl, 18 dwg

Description

An object of the present invention relates to a fitting for a vehicle seat, in particular for a car seat, wherein the fitting comprises a first part of a fitting and a second part of a fitting, with a toothed connection between the first part of the fitting and the second part of the fitting, so that relative rolling between the first part of the fitting is possible and the second part of the fitting; a rotatably mounted eccentric element driven and causing relative rolling between the first part of the fitting and the second part of the fitting in response to the drive of the eccentric element; a drive element for driving the eccentric element so that the eccentric element causes relative rolling between the first part of the fitting and the second part of the fitting, the drive element comprising a sleeve for supporting the drive element in the first part of the fitting, and the sleeve ends with a shoulder; and a mounting ring for axially attaching the drive element, the mounting ring being crimped onto the sleeve and surrounds the flange.

A fitting of the type described above is disclosed in at least one of US Pat. Nos. 5,634,689, 6,619,743 and 7,188,903.

An object of the present invention is to provide an improvement in a fitting of the type described above, for example, to simplify assembly of a fitting and / or to increase resistance to a load.

According to one aspect of the present invention, a fitting for a vehicle seat, in particular for a car seat, comprises a first fitting part and a second fitting part, with a toothed connection between the first fitting part and the second fitting part, so that relative rolling between the first fitting part is possible and the second part of the fitting; a rotatably mounted eccentric element driven and causing relative rolling between the first part of the fitting and the second part of the fitting in response to the drive of the eccentric element; a drive element for driving the eccentric element so that the eccentric element causes relative rolling between the first part of the fitting and the second part of the fitting, the drive element comprising a sleeve for supporting the drive element in the first part of the fitting, and the sleeve ends with a shoulder; and a mounting ring for axially securing the driving member, the mounting ring being crimped onto the sleeve and surrounds the collar, and the collar (or mounting ring) has a variable radius. Thus, the stress inside the fastener ring during the crimping process and the extrusion force are reduced by changing the geometry from a round (circular) to a preferred (for example, possibly) triangular geometric shape (for example, a collar or a fastening ring essentially in the form of a triple oval). In accordance with one aspect of the present invention, the fastening ring is curved and slightly stretched, the fastening ring being crimped onto the sleeve, in contrast to the prior art, in which the fastening ring only needs to be stretched and can break.

In some examples of embodiments of the present invention, a gear connection between the first part of the fitting and the second part of the fitting may be provided, for example, as described in US Pat. Nos. 5,634,689, No. 6,619,743 or No. 7,188,903, or may be provided, for example, as described in U.S. Patent No. 7,264,566. The full description of each US patent No. 5,634,689, 6,619,743, 7,188,903 and 7,264,566 included in this document by reference.

The objects of the present invention (for example, in relation to a shoulder having a variable radius) relate not only to fittings with a gear connection between the first part of the fitting and the second part of the fitting, i.e. gear coupled fittings. The objects of the present invention (for example, which relate to a shoulder with a variable radius, such as, but not limited to, a variable radius, which forms essentially a triple oval shape), can also be used for locking fittings, for example, as described in U.S. Pat.No. 6,454,354 or No. 6,991,295. A full description of each of US Pat. Nos. 6,454,354 and No.6,991,295 is incorporated herein by reference. In these cases (for example, embodiments of the locking fittings of the present invention), the eccentric element does not lead to rolling of the two parts of the fitting with a gear connection between them; rather, a rotatably mounted spring-loaded eccentric element presses on the gear segments so as to push the gear segments radially outward to secure the fitting. Thus, the eccentric element controls the relative movement of the parts of the fitting. The driving element is usually attached to the eccentric element. Moving the drive element rotates the eccentric element back and unlocks the fitting, for example, by rotating the disk together with the eccentric element and pulling the gear segments radially inward.

According to another aspect of the present invention, a fitting for a vehicle seat, in particular for a car seat, comprises a first fitting part and a second fitting part, with a toothed connection between the first fitting part and the second fitting part, so that relative rolling between the first fitting part is possible and a second part of the fitting, the first part of the fitting comprising a cuff; a rotatably mounted eccentric element, driven and causing relative rolling between the first part of the fitting and the second part of the fitting in response to the drive of the eccentric element, wherein the eccentric element contains two wedge-shaped segments that are forced away from each other, and two wedge-shaped segments installed on the cuff and installed in the second part of the fitting; and a driving element for driving the eccentric element so that the eccentric element causes relative rolling between the first part of the fitting and the second part of the fitting. The fitting is capable of steplessly adjusting the inclination of the seatback for the vehicle by relative rolling between the first part of the fitting and the second part of the fitting, which occurs in response to the drive of the eccentric element. The drive element comprises a drive liner and a drive ring, which are separate parts. The drive liner is used to drive the drive ring, and the drive ring is used to drive the eccentric element through the drive segment. The drive ring is mounted on the cuff. The drive segment is designed to contact the second part of the fitting in the event of (for example, in response to) a load. Thus, the fitting has a higher resistance to the load. The inclination of the drive element is eliminated. The sequence of acting forces can also pass along the line: the first part of the fitting with the cuff, the drive ring with the drive segment, the second part of the fitting (or vice versa).

Using an eccentric planetary gear allows you to steplessly adjust the angle of the backrest of the vehicle seat. The eccentric planetary gear can be driven manually or by an electric motor.

Other objects and advantages of the present invention will be more apparent from the following description.

The present invention is described below in more detail with reference to three examples of embodiments shown in the drawings, which are briefly described below.

FIG. 1 is a sectional view of a first example embodiment with a section along a line on I-I in FIG. 3.

FIG. 2 is a sectional view of a first example embodiment with a section along line II-II of FIG. 1.

Figure 3 is a side view of a first example embodiment.

4 is a perspective view of a driving element according to the first example of an embodiment.

Figure 5 is a partial view of figure 3 and figure 11 with a partial view of figure 5, common to all examples of embodiments.

Fig.6 is a partial perspective view of Fig.5 with a partial perspective view of Fig.6, common to all examples of embodiments.

7 is a schematic illustration of a seat for a vehicle.

FIG. 8 is an exploded view of an exploded view of FIG. 8, common to all examples of embodiments.

FIG. 9 is a sectional view of a second exemplary embodiment along line IX-IX of FIG. 11.

FIG. 10 is a sectional view of a second example embodiment along line XX in FIG. 9.

11 is a side view of a second example embodiment.

12 is a perspective view of a driving liner according to a second example of an embodiment.

FIG. 13 is a perspective view of a driving ring of a second example embodiment. FIG.

Fig. 14 is a partial sectional view of a second example embodiment in the case of a load.

FIG. 15 is a side view of a lead liner in a second example embodiment. FIG.

Fig. 16 is a side view of the driving ring of the second example embodiment.

17 is a mounting ring according to a fourth embodiment.

Fig. 18 is a mounting ring according to a fifth embodiment.

Referring now in more detail to the drawings, in which like reference numerals refer to like parts in several views, the car seat 1 comprises a seat part 3 and a seat back 4. The inclination of the backrest 4 of the seat can be adjusted relative to part 3 of the seat manually or by means of a drive from an electric motor. To adjust the inclination of the backrest 4 of the seat, a flywheel 5 (or an electric motor) is used to rotate the drive shaft 7, which is located horizontally in the intermediate zone between the part 3 of the seat and the backrest 4 of the seat. On both sides of the vehicle seat 1, the drive shaft 7 engages the fitting 10 without turning, as described in more detail below. The drive shaft 7 determines the control parameters of the cylindrical coordinate system, which is used in this description.

The fitting 10 is designed as a gear fitting in which the first part 11 of the fitting and the second part 12 of the fitting are interconnected by means of a gear connection to make and fix adjustments. More specifically, the first part 11 of the fitting and the second part 12 of the fitting are connected by means of an eccentric planetary gear, in particular an automatic locking planetary gear, as described, for example, in US Pat. No. 5,634,689. The full description of US patent 5,634,689 is incorporated herein by reference. In exemplary embodiments, the first part 11 of the fitting of a more or less lamellar shape (for example, substantially lamellar shape) is fixedly attached (for example, by means of an adapter) to the structure of the backrest 4 of the seat, while the second part 12 of the fitting of a more or less lamellar shape (for example essentially plate-shaped) is fixedly attached (for example, by means of an adapter) to part 3 of the seat. In another arrangement, the positions of the fittings 11 and 12 may be presented. The two parts 11 and 12 of the fitting may also be disk-shaped.

In order to create a gear, the gear 16 with the external gear is stamped on the second fitting 12, the gear ring 17 with the internal gear is formed on the first fitting 11, and the gear and gear ring are engaged with each other. The radius of the circumference of the tops of the teeth of the external gearing of the gear wheel 16 is less than at least one tooth higher than the radius of the circumference of the valleys of the teeth of the internal gearing of the gear ring 17. The corresponding difference of at least one tooth between the number of teeth in the gear wheel 16 and in the gear ring 17 allows the gear ring 17 to spin the gear 16, thereby allowing relative rolling (for example, relative rotation) between the first part 11 of the fitting and the second part 12 of the fitting. In this way an eccentric planetary gear is provided.

Concentrically on the internal gearing of the gear ring 17, the first part 11 of the fitting comprises a single cuff 19 with it on the side turned to the gear 16. The drive element 21 is mounted by a sleeve 22 inside the sleeve 19. The sleeve 22 is located in the center of the fitting 10 and is provided with a receiving part (for example, provided with a Central channel 23) for receiving the drive shaft 7. The profile of the channel 23 corresponds to the profile of the drive shaft 7, which in the examples of embodiments is a spline profile on the shaft. At a radius along the radius from its sleeve 22, the drive element 21 comprises a drive segment 24 located on the (radially) outer side of the cuff 19. The drive segment 24 extends around the cuff 19 by an angle of less than 180 degrees, more specifically (for example, in fact) about 140 degrees . around the circumference. At one end of the sleeve 22, the drive element 21 is provided with a round cover 25 with a larger radius than the radius of the sleeve 22. Between the sleeve 22 and the round cover 25 of the drive element 21 there is a gradual transition 25a. The gradual transition 25a continues radially, the gradual transition 25a in the radial direction is the value between the radius of the sleeve 22 and the radius of the round cover 25. The gradual transition 25a is axially offset and adjacent to the round cover 25.

On the (radial) outer side, two wedge-shaped segments 27 are supported on the cuff 19, which support the sleeve 28 of the sliding bearing due to the curved outer surfaces. The sleeve 28 of the sliding bearing is pressed without turning into the second part 12 of the fitting. Two wedge-shaped segments 27 together continue at an angle of more than 180 degrees. around the circumference. Two wedge-shaped segments 27 are located in a plane axially offset relative to the gradual transition 25a. The drive segment 24 is engaged with a gap between the narrow ends of the wedge-shaped segments 27. The drive element 21 may be provided with axial protrusions touching the two wedge-shaped segments 27 to fix the wedge-shaped segments 27 in the axial direction. The wide ends of the wedge-shaped segments 27 are facing each other. Each of the wide ends of the wedge-shaped segments 27 contains, at an angle formed by the protruding sections of the material, an angled end finger of the annular spring 35. The spring 35 pushes (for example, forcibly retracts) the wedge-shaped segments 27 from each other in a circumferential direction, so that, in the case when the wedge-shaped segments 27 become locked upon actuation or if the seatback 4 rises under load, sections of material protruding radially outward (which are located at the wide ends of the wedge-shaped x segments 27) may come into contact and to act on each other.

The driving element 21 is axially fixed on the outside of the first fitting part 11 by means of a snap-on fixing ring 43. To accommodate the fixing ring 43, the sleeve 22 of the driving element 21 is provided with a groove 22a whose radius is smaller than that of the rest of the sleeve 22. The sleeve 22 ends with a shoulder 22b ( for example, the end of the sleeve 22 comprises a shoulder 22b). The collar 22b forms the outer side wall of the groove 22a, and the collar 22b is cut into a cone towards the end surface of the sleeve 22. The mounting ring 43 surrounds the collar 22b. The bead 22b does not have a constant radius in the circumferential direction. More specifically, in three places, the radius of the shoulder 22b gradually decreases to the radius of the groove 22a and gradually increases back to the radius of the sleeve 22. Established also with some generalizations / additional explanations, in three places, the radius of the shoulder 22b smoothly (for example, smoothly) decreases to the radius ( for example, about the radius) of the groove (s) 22a (for example, as a result of which the groove 22a can be characterized as having the shape of three grooves 22a) and gradually (for example, smoothly) increases back to the radius (for example, about the radius) of the sleeve 22. So Thus, the radial section of the shoulder 22b has the shape of three ovals (for example, essentially the shape of three ovals). However, the notch provided by the shoulder 22b and the fixing of the fixing ring 43 inside the groove 22a is still held for more than 3 × 90 degrees. in the direction of the circle. When the fastening ring 43 clicks, the fixing ring 43 is bent and slightly stretched (i.e., slightly stretched). In contrast, in embodiments of the prior art, the fixing ring 43 is greatly extended only when it is latched.

An o-ring 44 is provided on the outside of the second fitting part 12 between the stamping of the relief for the gear 16 and the round cover 25 of the driving element 21. The o-ring 44, which can be made of rubber, for example, is mounted on the circumference of the round cover 25.

The wedge-shaped segments 27 form an eccentric element for at least partially controlling relative rolling (for example, relative rotation) between the first part 11 of the fitting and the second part 12 of the fitting. More specifically, the wedge-shaped segments 27 form an eccentric element, which, while continuing in the eccentricity direction, compresses the gear 16 into the gear ring 17 at the engagement point formed by the joint structure / interaction between the gear, the gear ring and the eccentric element. When the drive force is provided by the rotating drive shaft 7, the torque is transmitted first to the driving element 21, and then through the rotating driving element 21 to the eccentric element, so that the eccentric element slides along the sleeve of the sliding bearing 28, changing the direction of the eccentricity and thus changing the gear engagement point wheels 16 in the gear ring 17, which manifests itself as rolling with swinging, i.e. relative rotation with superimposed swing motion. Thus, the inclination of the backrest 4 of the seat can be infinitely adjusted between several positions for use.

The preceding features are common to both the first and second examples of embodiments.

In the first example embodiment, the driving element 21 is made in the form of a single part, for example, of plastic. The drive element 21 according to the first example of the embodiment comprises a sleeve 22, a gradual transition 25a, a drive segment 24 and a round cover 25. The drive segment 24 protrudes axially from the gradual transition 25a.

In a second example embodiment, the driving element 21 is made in two parts. More specifically, the driving element 21 according to the second example of the embodiment consists of a driving liner 21a, which, for example, can be made of plastic, and a driving ring 26, which, for example, can be made of metal. The drive liner 21a comprises a sleeve 22, a gradual transition 25a and a round cover 25. The drive ring 26 includes a drive segment 24. The drive ring 26 is mounted (for example, located) radially on the outer side of the sleeve 19. In the part of the perimeter, the gradual transition 25a of the second example embodiment contains outward radially outer teeth 21b. In the region of the outer teeth 21b, a gradual transition 25a holds the drive ring 26, which in some areas contains the inner teeth 26b, which are fully engaged in the form of a contour connection with the outer teeth 21b. Instead of teeth, other contour connection profiles with ribs, polygonal connections and the like are also possible. In order to eliminate the clearance in the contour connection between the internal teeth 26b and the external teeth 21b, engagement in the contour connection may occur with the displacement of the gradual transition material 25a during installation. The drive segment 24 projects from the drive ring 26 in the axial direction.

In the normal case, the drive segment 24 is not in contact with the sliding bearing sleeve 28 of the second part 12 of the fitting, but only with two wedge-shaped segments 27. In the case of (for example, in response to a load), for example, a heavy passenger, improper use or accident driving ring 26 of the second An example embodiment may be in contact with a sleeve 28 of a sliding bearing. Then a three-point support (three-point bearing) is created between the second part 12 of the fitting (on which the sleeve of the sliding bearing 28 is mounted) on one side and the group consisting of two wedge-shaped segments 27 (forming an eccentric element) and the drive segment 24 of the drive ring 26 on the other side. Three points are indicated by arrows in FIG. The group consisting of two wedge-shaped segments 27 (forming an eccentric element) and a drive segment 24 of the drive ring 26 supports the first part 11 of the fitting due to the cuff 19 of the first part 11 of the fitting.

In a third example of an embodiment, the fitting is a locking fitting, and the drive element for unlocking the locking fitting is also provided with a shoulder 22b, the radial section of which has the shape of three ovals described above (for example, essentially the shape of three ovals). Those. 5 and 6 show distinctive features that are also applicable to the third example of the embodiment. Accordingly, the advantages described above take place for the third example embodiment when the fastening ring is crimped onto the sleeve and surrounds the bead.

In previous embodiments, the (outer) radius of the shoulder 22b is inconsistent, and the mounting ring 3 has circular symmetry. It is also possible that the (inner) radius of the fixing ring 43 is unstable, although the bead 22b has circular symmetry. According to the fourth embodiment shown in FIG. 17, the internal shape of the fixing ring 43 may be in the form of three ovals, i.e. the shape is similar to the outer shape of the shoulder 22b of the first embodiment. The shoulder 22b of the fourth embodiment has a circular shape. The mounting ring 43 can be deformed and bent in an area with a large internal radius, thereby reducing tension. Alternatively, in the fifth embodiment shown in FIG. 18, the inner shape of the mounting ring 43 is provided with three notches, i.e. sectors angle of about 60 degrees. with a large internal radius, separated by sectors with an angle of about 60 degrees. with a smaller inner radius. In the fourth embodiment, as well as in the fifth embodiment, in three sectors in the circumferential direction, the inner radius of the mounting ring 43 is equal to or greater than the radius of the shoulder 22b, and in the other three sectors in the circumferential direction, the inner radius of the mounting ring 43 is less than the radius of the shoulder 22b .

Specialists in this field it is clear that, although the present invention is described above with reference to examples of embodiments, it can be made various additions, modifications and changes without deviating from the essence and scope of the present invention, as set forth in the following claims.

Claims

1. A fitting for a vehicle seat, wherein the fitting (10) comprises a first part (11) of the fitting and a second part (12) of the fitting, while there is a gear connection between the first part (11) of the fitting and the second part (12) of the fitting, so that relative rolling between the first part (11) of the fitting and the second part (12) of the fitting is possible; a rotatably mounted eccentric element (27), driven and causing relative rolling between the first part (11) of the fitting and the second part (12) of the fitting in response to the movement of the eccentric element (27); a driving element (21) for driving the eccentric element (27) so that the eccentric element (27) causes relative rolling between the first part (11) of the fitting and the second part (12) of the fitting, while the driving element (21) contains a sleeve (22) ) to support the driving element (21) in the first part (11) of the fitting, and the sleeve (22) ends with a shoulder (22b); and a mounting ring (43) for mounting the drive element (21) on the axis; in which the fastening ring (43) is compressed on the sleeve (22) and surrounds the flange (22b), characterized in that the flange (22b) or the fastening ring (43) has a variable radius.

2. The fitting according to claim 1, characterized in that the sleeve (22b) includes a groove (22a), and the mounting ring (43) is pressed into the groove (22a) of the sleeve (22b).

3. The fitting according to claim 2, characterized in that the collar (22b) forms the outer side wall of the groove (22a).

4. The fitting according to claim 3, characterized in that the groove (22a) has a radius, the radius of the flange (22b) is the outer radius, and at least in one place in the circumferential direction, the outer radius of the flange (22b) is reduced to the radius of the groove (22a) and increases back to the radius of the sleeve (22).

5. A fitting according to claim 1 or 3, characterized in that the radius of the fastening ring (43) is an inner radius, and at least in one place in the circumferential direction, the inner radius of the fastening ring (43) is equal to or greater than the radius of the shoulder (22b ), and at least in one place in the circumferential direction, the inner radius of the mounting ring (43) is smaller than the radius of the shoulder (22b).

6. The fitting according to claim 4, characterized in that the radius of the collar (22b) or the radius of the mounting ring (43) smoothly decreases and increases.

7. Fitting according to claim 5, characterized in that the radius of the collar (22b) or the radius of the mounting ring (43) smoothly decreases and increases.

8. The fitting according to claim 6 or 7, characterized in that the radius of the collar (22b) or the radius of the mounting ring (43) decreases and increases three times in the circumferential direction.

9. The fitting according to claim 1, characterized in that the fitting (10) is configured in such a way that there is an overlap of the swing motion during relative rolling between the first part (11) of the fitting and the second part (12) of the fitting.

10. The fitting according to claim 1, characterized in that the first part (11) of the fitting comprises a sleeve (19), an eccentric element (27) is mounted on the sleeve (19), and a driving element (21) is installed in the sleeve (19).

11. The fitting according to claim 1, characterized in that the eccentric element (27) contains two wedge-shaped segments that are forcibly removed from each other.

12. A fitting according to claim 10 or 11, characterized in that the fitting (10) is configured to infinitely adjust the tilt of the backrest (4) of the vehicle seat (1) by means of relative rolling between the first part (11) of the fitting and the second part (12) fitting, which occurs in response to the drive of the eccentric element (27), while the drive element (21) comprises a drive liner (21a) and a drive ring (26), the drive liner (21a) and the drive ring (26) being separate parts relative to each other, while the drive the insert liner (21a) is configured to drive the drive ring (26) and the drive ring (26) is configured to drive the eccentric element (27) through the drive segment (24), and the drive ring (26) is mounted on the sleeve (19) and the drive the segment (24) is adapted for contacting with the second part (12) of the fitting under load.

13. A fitting according to claim 12, characterized in that under load a three-point support is created between the second part (12) of the fitting and the group, and the group consists of two wedge-shaped segments (27) and a drive segment (24).

14. The fitting according to claim 12, characterized in that there is a contour connection between the drive liner (21a) and the drive ring (26).

15. The fitting according to item 13, characterized in that there is a contour connection between the drive liner (21A) and the drive ring (26).

16. The fitting according to claim 1, characterized in that the sleeve (22) contains a receiving part (23) for receiving the drive shaft (7).