JP2814029B2 - Seat fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a gear device in which a fixed joint attached to a seat and a swingable joint attached to a backrest are connected to each other via a swing shaft.
Made that both adjusting and fixing device for determining the mutual position of the joint portion is provided, the support of one of the joint portion is performed on the eccentric portion of the pivot axis, the pivot axis, to form the eccentric The invention relates to a fitting for a seat, in particular for a motor vehicle seat, having a non-rotating engagement for supporting at least one wedge-shaped part.

[0002]

BACKGROUND OF THE INVENTION German Patent No. 3013304
In a fitting of the type described above, which is known from U.S. Pat. No. 5,085,098, the engaging body consists of a disc, which has engaging projections arranged at an angle of 180.degree. It is fixed so as not to rotate relative to the driving shaft. The disk is surrounded by a hole in the coupling part supported by the eccentric part, which hole is held in the eccentric position by a wedge-shaped part arranged on the engaging disk between the engaging projections. The two wedge-shaped sections, crescent-shaped in cross-section, which taper towards the engagement projections and which can be subjected to forces by these engagement projections, are pushed out of each other by the energy storage device at the apex of the eccentric and are eccentric. Is supported on the swing shaft. In practice, it has been found that the use of an engagement sleeve having an engagement projection for supporting the wedge-shaped part instead of the engagement disk is suitable for manufacturing technical reasons. The engagement sleeve is fixed to the swing shaft by a fastening pin. By using both wedge-shaped parts, it is realized that there is no play of the engagement and support points in the fixed case. Instead of both wedges, it is sufficient in the simplest case to use only one crescent-shaped wedge, which tapers from the middle area towards the end and rocks with the engagement body. It forms a constant eccentric part of the driving shaft. In the latter case, of course, the play which is functionally caused by the movement is also present in the fixed case. However, in each case, based on the requirements of the engaging body, the wobble-shaped part for the formation of the eccentric part has three pivoting members, namely the shaft end forming the root element of the pivoting shaft, It must consist of an engagement body or an engagement sleeve connectable to the shaft end and at least a coupling element for fixing the mutual position of the shaft end and the engagement body.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to reduce the number of components for supporting a wedge-shaped portion forming an eccentric ring on a swing shaft.

[0004]

According to the present invention, in order to solve this problem, in a fitting for a seat, an engaging body is punched from around a pivot shaft to form a side wall of a recess.
It is configured as a stopper ridge .

[0005] It is advantageous for the engaging body to be formed as a stop bump which is stamped from the pivot axis. This makes it possible to form the pivot axis from only one component. This is because the engaging member for supporting the wedge-shaped portion forming the eccentric ring is integrally formed on the swing shaft as a component member composed of one portion of the swing shaft. This simplifies the manufacture and assembly of the fitting.

In the case of adjustment , a wedge-shaped portion is formed on the engaging body of the swing shaft.
For contact , the two spaced-apart stop bumps preferably have a stop surface which is as flat as possible, these stop surfaces being provided in the region of the semicircle of the pivot axis. Have . In this case, on the eccentric portion
Advantageously, the stop surfaces are spaced apart from each other at an angle of more than 180 °, preferably of about 220 ° to 260 °, for self-supporting of the bore of one of the supported joints.

[0007] The formation of a flat stop surface at the stopper ridge is simple if the side surface of the recess formed on the pivot axis for forming the stopper ridge is arranged at right angles to the stopper surface. Can be achieved by a simple pressing process.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS The invention is explained in more detail below with reference to an embodiment shown in the drawing.

The joint fitting includes a lower joint part 10 which can be fixedly connected to the seat part, an upper joint part 11 which can be connected to the backrest and can swing, and this upper joint part 11 is connected to the lower joint part 10. It has an adjusting / fixing device that swings.

This adjusting and fixing device is, for example,
It includes a spur gear 12 formed by stamping from zero and having external teeth 13, which mesh with internal teeth 15 of an annular gear 14 of a coupling part 11 formed, for example, by stamping. The diameter of the tip circle of the outer teeth 13 is smaller than the diameter of the root circle of the inner teeth 15 by at least one tooth height. The tooth cuts 13 and 15 therefore have a different number of teeth by at least one tooth, in which case the number of internal teeth 15 is greater than the number of external teeth 13. This arrangement is chosen so that the internal teeth 15 of the coupling part 11 can roll on the external teeth 13 of the coupling part 10.

The disk produced during the formation of the internal teeth 15 of the ring gear 14 and concentrically connecting the ring gear is:
It is supported on a part 18 of a pivot shaft 17, on which a strip 25 is also fixedly connected to the upper joint part 11 and covers the joint part 10 in the region of the joint bore. The rocking shaft 17 projecting from the strip 25 is followed by a concentric engaging part 22 having a non-circular cross-section with a central threaded hole formed by chamfering. As a result, a handle (not shown) which can be used for adjustment can be held against relative rotation. The part 18 is followed by another engaging part 23 which has a slit which serves for the rotational engagement of the transmission shaft to a fitting which is arranged on the other seat longitudinal surface. .

[0012] The spur gear 12 to form the eccentric portion for eccentrically supported against the annular gear 14, the rocking shaft 17 is provided with a engaging body 24, the engaging body is spaced And is formed from two stopper protrusions 19 punched from the periphery of the swing shaft 17. These stop bumps 19 have a stop surface 20 for supporting a wedge-shaped portion 26 formed in one part in the embodiment according to FIGS. Wedge-shaped portion 26 of each stop 19
The side stop surfaces 20 form an angle of 180 ° or more with each other. In the embodiment shown in FIGS. 1 and 2, this angle is chosen to be 245 °. The stop protrusions 19 formed by the notches of the swing shaft 17 are formed such that the stop surfaces 20 of the stop protrusions 19 are at right angles to the side surfaces 21 of the cuts on the swing shaft. 1 and 2 show the engagement area and the wedge-shaped part 26.
The eccentric part formed by the helical gear is engaged with the ring gear 14 in the engagement position with the spur gear 12, while the eccentric distance is such that the gear cuts 13 and 15 are disengaged on the opposite side of the engagement point. It is shaped to have.

In the embodiment shown in FIGS. 1 and 2, the play required for the adjusting function cannot be eliminated. In seen Embodiment 3, the wedge-shaped portion 26 '' has been replaced with, these wedge-shaped portion, these wedge portions 26 and 26 'and 26 "two wedge portions 26 fly eccentric vertex between
A ridge 27 is located between the stop bumps 19 so that it can be located. The manner of operation of this embodiment, which can be seen from FIG. 3, is the same as in the solution according to DE 3013304.

As already mentioned, the embodiments shown and described above merely illustrate the subject of the invention, and the subject of the invention is in no way restricted thereto. Rather, various changes and alternative configurations of the subject matter of the present invention are possible. Furthermore, all new features mentioned in the specification or shown in the drawings are important to the invention, even if not explicitly claimed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a fitting having only one wedge-shaped portion according to the present invention.

FIG. 2 is a cross-sectional view of the fitting shown in FIG.
It is sectional drawing which follows a line.

FIG. 3 is a cross-sectional view of another embodiment of a coupling fitting in which an eccentric portion is formed of two wedge-shaped portions for removing play supported on a swing shaft.

[Explanation of symbols]

 17 swing shaft 24 engaging body

Continuation of the front page (72) Inventor Richard Hansel Alzau am Heldli 1 of Germany (72) Inventor Marine Klaus Rotzhausen-Ka Perenberg Bergenstraße 25 (56) References JP-A-63-150012 (JP, A) JP-A-1-250611 (JP, A) JP-B-63-47443 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47C1 / 025

Claims (4)

(57) [Claims] 1. A fixed joint part associated with a seat part and a pivotable joint part associated with a backrest are connected to each other via a pivot shaft and are configured as a gear device, and the mutual position of both joint parts is determined. An adjusting and fixing device for determining
The seat of one of the joints is supported on an eccentric portion of the pivot shaft, the pivot shaft having a relatively non-rotating engagement member for supporting at least one wedge-shaped portion forming the eccentric. in joint fitting of use, engaging body (24) is swinging
The side wall of the recess (2)
1) configured as a stopper ridge (19) forming
Characterized in that there, joint fitting for seats. 2. The two stop projections (19), which are arranged at a distance from one another, have a stop surface (20), which stop surface extends within the semicircle of the pivot axis (17) . The joint fitting according to claim 1, wherein the fitting is arranged in a plane perpendicular to the longitudinal axis. 3. The stopper surfaces (20) are spaced apart from each other at an angle of 180 ° or more.
The joint fitting according to claim 2. 4. The stopper surface (2 ) of the stopper protrusion (19).
Characterized in that 0) and the side surface of the recess (21) is at right angles to each other, joint fittings according to one of claims 1 to 3.