CN1135953A

CN1135953A - Structure of sliding bearings for automotive seats

Info

Publication number: CN1135953A
Application number: CN95106044A
Authority: CN
Inventors: G·福斯曼; U·莱曼
Original assignee: Keiper Recaro GmbH and Co
Current assignee: Keiper Recaro GmbH and Co
Priority date: 1995-05-16
Filing date: 1995-05-16
Publication date: 1996-11-20
Anticipated expiration: 2015-05-16
Also published as: CN1052782C

Abstract

A sliding bearing is composed of bearing hole on seat and bearing sleeve inserted in the hole. In order to be inserted in bearing hole, said bearing sleeve is installed onto an embedded axle and close to axle supporter for inserting it along with embedded axle into bearing hole. In order to minimize the fitting allowance of bearing and prevent the supporting plane of bearing sleeve from being damaged, the bearing sleeve is made up of laminated material by rolling. The bearing sleeve is inserted in the bearing hole by a calibrating axle acting as embedded axle.

Description

The constructive method of the sliding bearing that automotive seat is used

The present invention relates to a kind of constructive method of the sliding bearing that automotive seat uses, sliding bearing is made up of a bearing hole and a bearing housing that inserts in the hole of seat component.For bearing housing is clamp-oned in the bearing hole, bearing is close to installs the back on the supporting boss of clamp-oning axle and clamp-on in the bearing hole with clamp-oning axle.

Known from German patent DE-AS 12 97 496, DE 31 09 302 and DE 38 16 510, the bearing housing that constitutes sliding bearing for example inserts in the bearing hole of an articulated elements, and hinge is connected backrest with seat component.In order to keep little bearing play as far as possible, the bearing housing of clamp-oning articulated elements must be processed into very little error as far as possible, because the hinge used of automotive seat particularly, even the gap of hinge point is very little on the backrest surface, but because backrest is more much longer and can make the gap that produces in the hinge scope big doubly a lot of than hinge.Owing to clamp-on process itself error of bearing housing also there is certain influence, so, the error in the hole of bearing housing must suitably be selected.This point for example also is applicable to by the lever that German patent DE 40 30 855 A1 are that propose and height seat and inclination controlling device are hinged, rocking bar etc.In order to eliminate the bearing play at least in part, particularly eliminate the lattice noise that lattice creak that creaks, proposed when hinged lever and rocking bar, the variation of bearing housing on its intrinsic elastic range immanent structure must be as far as possible little, and for example have an annular flange flange and make bearing housing produce very small deformation with the axle journal of axle sleeve engagement, so that eliminate the bearing play at least in part.

Task of the present invention is to propose a kind of sliding bearing, and simultaneously, the internal diameter of bearing housing can be realized bearing housing is clamp-oned in the bearing hole of seat component, and its margin of error can be restricted to the some thousandths of millimeter.The present invention addresses this problem like this: adopt the sliding bearing sleeve of multilayer material rolling to clamp-on axle as bearing housing and with the calibration of axes conduct.

Sliding bearing sleeve by the multilayer material rolling has three layers usually, has the bearing housing of a seam to make with the also available bronze of steel in its whole bearing width.At steel or bronze back is that the thick Oilite bronze layer of 0.2～0.35mm that forms with tin bronze or tin lead bronze sintering is the second layer, and polytetrafluoroethylene (PTFE) and plumbous mixture are gone in roll extrusion in the hole of this layer.On sintered bronze, form the thick sliding layer of about 0.01～0.03mm after the roll extrusion.For at the quite thin sliding layer of unlikely this layer of damage of when calibration, be inserted into the sliding bearing sleeve that constitutes by multilayer material on the calibration of axes and clamp-on by calibration of axes in the bearing hole of seat component.Like this, the lateral extrusion power that produces during relative movement only may appear at the outside that sliding bearing sleeve does not have coating at the same time, so the polytetrafluoroethylene floor of sliding bearing is injury-free.The diameter of calibration of axes is design like this, promptly to making mounted sliding bearing certain minimum diameter is arranged.The size of sliding bearing becomes minimum diameter that equals the calibration of axes diameter of (promptly before installing) total energy assurance under sliding bearing does not have loading status with matching design simultaneously.This means that after sliding bearing was pulled on the calibration of axes, the seam of the sliding bearing that cracks was no longer opened wide and reached pressing base.Even simultaneously bearing hole is designed to also can reach pressing base when the worst error position of sliding bearing diameter, this means that minimum sliding bearing external diameter is always greater than the maximum diameter of bearing hole.

Sliding bearing sleeve is owing to the distortion that transposition produced of excess stock in the process of clamp-oning for the form by the known stretching pass is supported in, and the bearing hole of making by precision stamping preferably quenches the hole wall that it contacts with sliding bearing sleeve.For the ease of importing and support the distortion of sliding bearing sleeve, bearing hole has one to import chamfered edge so that import the bearing housing of end face chamfered edge at least on seat component one side, and imports chamfered edge and be preferably on the bearing angle of spot hole and make rounding.

Though this sliding bearing is applicable to many supportings position of automotive seat, but in order to eliminate the gap, sliding bearing sleeve preferably inserts in the bearing hole of articulated elements of a seat hinge, and this articulated elements comprises the eccentric segment of the running shaft of adjusting that a structure is a transmission device and positioning device.

Describe the present invention in detail below in conjunction with embodiment shown in the drawings.Accompanying drawing is:

Fig. 1 represents to be contained in the sliding bearing sleeve on the calibration of axes;

The stage of clamp-oning that Fig. 2 represents to be contained in the sliding bearing sleeve on the calibration of axes begins;

The enlarged view of IIA in Fig. 2 A presentation graphs 2;

Fig. 3 represents to have clamp-oned seat component with the sliding bearing sleeve that multilayer material is rolled into;

The process of clamp-oning of representing Fig. 3 A finishes the enlarged view of the IIIA among the Fig. 3 of back;

Fig. 4 represents to clamp-on with the sliding bearing sleeve that multilayer material is rolled into the hinge of the articulated elements of wraparound rotating shaft eccentric segment.

The sliding bearing sleeve of representing among the figure 10 is for example formed and a seam 13 is arranged in whole bearing width by the steel band section 11 of rolling with at the glide material bed of material 12 on the steel backing inboard.This sliding bearing sleeve 10 is inserted in Fig. 1 on the calibration segment 15 of calibration of axes 14, and calibration of axes 14 has one section introduction segment 16 before being positioned at calibration segment 15, and calibration segment has approximately half tilt angle of spending to calibration of axes 14 end faces.The step 17 that the other end of calibration segment 15 and calibration of axes 14 diameters are bigger is connected, and the end face of sliding bearing sleeve 10 is close to step.

Fig. 2 represents to clamp-on process and begins, and the sliding bearing sleeve 10 that promptly is arranged on the calibration segment 15 is clamp-oned in the bearing hole 19 of seat component 18.Be inserted on the calibration of axes 14 and push for the ease of sliding bearing sleeve 10 in the bearing hole 19 of seat component 18 for the ease of sliding bearing sleeve, two end faces of sliding bearing sleeve all remove corner angle 20.But the bearing hole 19 of seat component 18 also has the chamfered edge 21 of importing in the importing side of sliding bearing sleeve 10 at least.Import chamfered edge 21 simultaneously and also can make the rounding 22 of bearing hole 19 range to imports.

Fig. 3 represents that sliding bearing sleeve 10 clamp-oned in the bearing hole 19 of seat component 18.On this rigging position, this its length preferably be a bit larger tham bearing hole 19 sliding bearing sleeve can near the end before the step 17 by at calibration sliding bearing external diameter the time excess stock and the very little projection 23 that on end, is shaped.

As shown in Figure 4, sliding bearing sleeve for example carries out practical set on hinge.This hinge that is used for carrying out with respect to the backrest as the hinged component of seat component step-less adjustment has an articulated elements 24 and an articulated elements 25 that rotates with backrest that firmly connects with seat component, and articulated

elements

24 and 25 interconnects by a running shaft 27 with eccentric segment 26.Running shaft 27 is that structure is the adjusting of transmission device and the constituent element of positioning device, for example the cylindrical gears that has external tooth 29 28 that forms by articulated elements 24 compacting then belongs to and regulates and positioning device, and internal tooth 31 engagements of external tooth 29 and the ring gear 30 that for example equally also is pressed into by articulated elements 25.The outside diameter circle of external tooth 29 is at least than the little tooth depth of Root diameter of internal tooth 31.So the number of teeth of external tooth 29 and internal tooth 31 differs at least one tooth.In illustrated embodiment, the number of teeth of internal tooth 31 is greater than the number of teeth of external tooth 29.On articulated elements 25, with internal tooth 31 concentric fits a clamping element 32 that constitutes as sleeve, clamping element 32 comprises a sleeve 33, sleeve 33 then is bearing in the draw ring 34 that the articulated elements 25 of internal tooth one side protrudes.Clamping element 32 has the clamp arm 35 that the certain radial distance of sleeve 33G with it is arranged, clamp arm 35 above the draw ring 34 with sliding bearing sleeve 10 in draw ring 34 and insertion cylindrical gears 28 bearing holes 19 between clearance meshing.Sliding bearing sleeve 10U aforesaid way constitutes and packs in the bearing hole 19 with a calibration of axes.

In the plane of clamp arm 35, two arc voussoirs 36 oppositely are bearing in the draw ring, and arc voussoir is bearing on the sliding bearing sleeve 10 of cylindrical gears 28 with its excircle.On the hinges fixing fixed position, the narrow end face of arc voussoir 36 has only very little distance from clamp arm 35, and arc voussoir 36 wide end faces then apply power by the spring arm 38 of torsion spring 37 along the direction that struts mutually.These arc voussoirs 36 form an eccentric segment 26 that is contained in the sliding bearing sleeve 10 with the draw ring 34 of articulated elements 25, and are fixed on the articulated elements 11 of eccentric peak extend radially by eccentric segment 26 with the internal tooth 31 of the articulated elements 25 of external tooth 29 engagements of cylindrical gears 28.There is the hole of a splined shaft shape at the center of the sleeve 33 of clamping element 32, adorns the transmission bar 39 of a splined shaft shape in the hole, so that rotatablely moving of importing in the hinge on the seat one long limit is delivered to seat on the hinge on the length of side limit.In this embodiment, adjustment movement is delivered to by handle 40 and transmits on the bar 39.

As previously mentioned, diagram and aforesaid embodiment are an example of the present invention, and the present invention is not subjected to the restriction of this example.This sliding bearing also can be used for various hinge point, and is not subjected to said apparatus embodiment's restriction except the hinge of the longitudinal adjustment apparatus, height-adjusting device and the rotary regulator that can be used for automotive seat.So new feature that address in specification and/or that represent in the drawings even clearly propose in the claims, but all belongs to scope of the present invention.

The symbol 10 sliding bearing sleeves 11 band section 12 glide material bed of materials 13 seams 14 calibration of axes 15 calibration segment 16 introduction segments 17 steps 18 seat components 19 dead eyes 20 chamfered edges 21 import the chamfered edges 22 roundings 23 distortion flanges 24 part 25 rotary hinge fittings 26 eccentric segments 27 rotating shafts 28 roller gears 29 external tooths 30 ring gears 31 internal tooths 32 clamping elements 33 sleeves 34 draw rings 35 clamp arms 36 arc voussoir 37 torsionsprings 38 spring arms 39 that are fixedly hinged and transmit bars 40 handles

Claims

1. the constructive method of the sliding bearing on the automotive seat, it is made up of the bearing hole of a seat component and the bearing housing in the load hole, clamp-on in the bearing hole for the ease of bearing housing, bearing housing abutted against install the back on the supporting boss of clamp-oning axle and clamp-on in the bearing hole, it is characterized in that: adopt the sliding bearing sleeve (10) that is rolled into by multilayer material as bearing housing with clamp-oning axle; Then use calibration of axes (14) as clamp-oning axle.

2. sliding bearing according to claim 1 is characterized in that, bearing hole (19) forms by precision stamping, and hole wall partly needs to quench at least.

3. according to claim 1 and/or 2 described sliding bearings, it is characterized in that bearing hole (19) has importing chamfered edge (21) at least on a side of seat component (18), so that the importing of the sliding bearing sleeve (10) of end face band chamfered edge (20).

4. sliding bearing according to claim 3 is characterized in that, imports chamfered edge (21) and is made of a rounding (22) on bearing hole (19) angle.

5. according to above-mentioned one or the described sliding bearing of omnibus claims, it is characterized in that, in the bearing hole (19) of the articulated elements (24) of a seat hinge of sliding bearing sleeve (10) insertion, this articulated elements (24) comprises that a structure is the eccentric segment (26) of the adjusting of transmission device and the running shaft of positioning device (27).