CN1048684C

CN1048684C - Hinges for seats with adjustable backboards, especially for those in automotives

Info

Publication number: CN1048684C
Application number: CN95106045A
Authority: CN
Inventors: D·安格曼; H·沃纳
Original assignee: Keiper GmbH and Co
Current assignee: Johnson Controls Components GmbH and Co KG
Priority date: 1995-05-16
Filing date: 1995-05-16
Publication date: 2000-01-26
Anticipated expiration: 2015-05-16
Also published as: CN1135978A

Abstract

The present invention relates to a hinge which comprises a fixed hinging member arranged for seat components, and a rotary hinging member arranged for backrests, wherein the two hinging members are connected through a rotary shaft; the present invention is provided with an adjusting and positioning device used as a component of a transmission device for determining the mutual positions of the two hinging members, wherein the rotary shaft supporting one of the hinging members is provided with an eccentric segment which is composed of two mutually sloping bow-shaped wedge blocks partially surrounding the rotary shaft and a clamping member, a chamfering clamping arm positioned between the narrow edges of the two bow-shaped wedge blocks; each rotary shaft of the hinge is provided with a center hole used for carrying out a torsion resistant connection with a transfer rod used for connecting two hinges of seats.

Description

The adjustable back seat is the hinge used of automotive seat particularly

The present invention relates to a kind of hinge that adjustable back seat, particularly automotive seat are used.This hinge comprises be fixedly hinged a part and the rotation articulation piece for the backrest configuration for the seat component configuration, these two articulation pieces interconnect by a S. A., and this hinge has an adjusting and a registration device as the driving device formation of determining two articulation piece mutual alignments simultaneously.The S. A. that two articulation pieces of described connection are used has an eccentric segment, it surrounds the clamping element of described S. A. by two parts and the arc voussoir of bevelled, a clamp arm and the spring that struts arc voussoir broadside between the narrow limit of arc voussoir constitute mutually, described S. A. has a center mounting hole simultaneously, is used for carrying out antitorque the connection with a transmission bar that two articulation pieces of seat are connected with each other.

German patent DE 30 13 304C2 have proposed a kind of hinge of the above-mentioned type, and the clamping element of arc voussoir makes disc and shaft part is antitorque is connected (for example by modes such as pressure suit or shrink fit) with rotation.This disc shaped clamping element has grip flange masterpiece is used on the narrow limit of arc voussoir.But the disc clamping element of this structure is owing to can not make with easy method in the sudden change of grip flange scope inside radius.For moment of torsion is delivered on the articulation piece on the long limit of relative seat from the articulation piece of be provided with the long limit of seat, a transmission bar is set in the non-circular hole of S. A. acts on the long limit of each seat and and interconnect two articulation pieces.S. A. is made up of pivot and is directly supported articulation piece, and another articulation piece then directly is bearing on the arc voussoir.Because the thickness of articulation piece is than considering that for intensity under the collision situation the required facewidth only surpasses seldom, so produce quite high compressive load per unit area in supporting place of articulation piece.

Task of the present invention is to reduce the compressive load per unit area at articulation piece supporting position and avoid producing constrained force.This task is to solve like this: at the clamping element of a sleeve-like of the center of articulation piece collar internal support, and the inside face of arc voussoir is bearing on the collar, the outside face of arc voussoir has at least a part to be bearing in the centre bearing collar of another articulation piece, and the excircle of the collar and inner periphery are then accurately calibrated by the tip circle of articulation piece ring gear.Like this, also can constitute an enough big areal of support and bear quite little compressive load per unit area even the wall thickness of articulation piece is very thin.

In order to make full use of the bearing length of the collar, the rounding by a plectane that extends into articulation piece by collar outer rim and the collar being connected on the plectane of described articulated section.In order to make the supporting position keep little cliding friction, a most preferred embodiment of the present invention with lubricator is coated on the outside face of the collar of arc voussoir and/or carrier ring.Also can insert simultaneously a sliding bearing sleeve that reduces the cliding friction of arc voussoir in carrier ring and/or in the collar.This sliding bearing sleeve is preferably in it and is coated with lubricant on the outside face of arc voussoir.

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

Fig. 1 represents the vertical cross sectional drawing of hinge;

Fig. 2 represents the hinge cross sectional drawing cut open along Fig. 1 hatching II-II;

The improved part enlarged drawing of Fig. 3 presentation graphs 1 hinge III.

Be arranged on the long limits of chair two and seat component and backrest bonded assembly hinge 10 are had an articulation piece 12 that is fixedly hinged part 11 and and backrest bonded assembly, can rotates relative to articulation piece 11 with the seat component bonded assembly, these two articulation pieces interconnect by a S. A. 13 that comprises eccentric segment 14, and S. A. also is an adjusting that constitutes as driving device and the part of registration device.For example the cylindrical wheel that has external tooth 16 15 that forms by articulation piece 11 compactings also belongs to this adjusting and registration device, external tooth 16 and internal tooth 18 engagements of for example being suppressed the ring gear 17 that forms equally by articulation piece 12.The outside diameter circle of external tooth 16 than the root diameter of internal tooth 18 to tooth depth when young.So the number of teeth of external tooth 16 and internal tooth 18 differs a tooth at least, and the number of teeth of internal tooth 18 is greater than the number of teeth of external tooth 16.Internal tooth 18 shown in the figure can roll on external tooth 16.

Articulation piece 12 has a collar 19 concentric with its internal tooth 18, and the clamping element 20 that constitutes as sleeve is bearing in the collar 19.For arranged concentric internal tooth 18, the collar 19 and clamping element 20 will carry out accurate concentric alignment by the excircle of the collar 19 and the tip circle of inner periphery and ring gear 17.The outer rim of the collar 19 extends to rounding 33 on the angle of plectane of articulation piece 12.

The most handy plastics make whole clamping element 20, comprise a sleeve 21, and its excircle of sleeve 21 usefulness is rotatably supported in the collar 19 of articulation piece 12.Overlap with the collar 19 and be connected with sleeve 21 for one, on hinge 10 outsides, be connected with a cover of dust 23 that overlaps in the hinged scope and clamp arm 22 and sleeve 21 are the same with clamp arm 22 that sleeve 21 is arranged from certain radial distance.In the plane of clamp arm 22, two arc its inside faces of voussoir 24 usefulness are bearing on the inner periphery of the collar 19, and these two arc voussoirs 24 itself are then kept in touch with its outside face and a support lantern ring 25 that is arranged on articulation piece 11 cylindrical wheels 15.On the hinges fixing allocation, arc voussoir 24 narrow end faces have only very little distance from clamp arm 22, and the wide end face of arc voussoir 24 is then stressed along the direction that struts by the spring arm 27 of an annual spring 26.The collar 19 of these arc voussoirs 24 and articulation piece 12 is common to constitute eccentric segments 14, by eccentric segment 14 the internal gear 18 of articulation piece 12 on the tooth 16 that is pressed onto cylindrical wheel 15 on the extended line of eccentric vertex.In the scope of arc voussoir 24, sleeve 21 both sides adjacent with cover of dust 23 are made the contact surface 28 of archwise voussoir shape respectively on the clamping element 20, and this contact surface is adjacent to the clamp arm 22 outstanding with respect to contact surface 28.

There is a bevelled through hole 29 at the center of the sleeve 21 of clamping element, and there is a conical sleeve that enlarges slightly in this hole to the seat inboard, and its minimum diameter is positioned on the side adjacent with cover of dust 23.In this embodiment, this taper hole 29 makes improved castellated shaft section, so that transfer torque, this improved castellated shaft section is supporting with the transmission bar 30 that has improved castellated shaft section equally.Be used for supporting the conical surface that the taper hole 29 that transmits bar 30 has and approximately can arrive 3 degree the inclination angle of taper hole axis.So just can offset the concentricity of the axis of two relative articulation pieces.Because in the adjusting of two hinges fortune fortune process, produced the effect of a very little but enough movable joint, so avoided clamping element 20 to a great extent and transmitted the caused constrained force of connection between the bar 30.

Outside face towards the support lantern ring 25 of arc voussoir 24 scribbles lubricant 31, with the friction between cylindrical wheel 15 supportings place that reduce arc voussoir 24 and articulation piece 11.

In the embodiment shown in fig. 3, sliding bearing sleeve 32 inserts in the support lantern ring 25, also scribbles lubricant 31 on its inside face.

As previously mentioned, the described in conjunction with the accompanying drawings embodiment in front is an example of the present invention.The present invention also can propose various modification and scheme.

Claims

1. the adjustable back seat hinge used of automotive seat particularly, described hinge arrangement has a part that is fixedly hinged (11) and the rotation articulation piece for backrest (12) configuration for the seat component configuration, this two articulation piece interconnects by a S. A. (13), described hinge also disposes an adjusting and a registration device (14 as the driving device formation of determining two articulation piece mutual alignments, 15,17); Describedly be used to support articulation piece (11,12) S. A. (13) has an eccentric segment (14), and it surrounds the clamping element (20) of S. A. (13) by two parts and the arc voussoir of bevelled (24), a clamp arm (22) and the spring (26) that struts arc voussoir (24) broadside between the narrow limit of arc voussoir are formed mutually; The S. A. of described hinge (13) has a centre hole (29) to be used for carrying out antitorque the connection with a transmission bar (30) that two articulation pieces of seat are coupled together, it is characterized in that, the clamping element of sleeve shaped (20) is bearing in the center collar (19) of an articulation piece (12), arc voussoir (24) is bearing on the collar (19) with its inside face, and the outside face of arc voussoir (24) is bearing on the centre bearing collar (25) of another articulation piece (11) at least in part, and the inside and outside circumference of the collar (19) must accurately be calibrated by the tip circle of ring gear (17) simultaneously.

2. hinge according to claim 1 is characterized in that, the collar (19) is connected on the plectane of described articulation piece (12) by a rounding (33) that extends in the plectane of articulation piece (12) from the collar (19) outer rim.

3. hinge according to claim 1 is characterized in that, the collar (19) scribbles lubricant (31) towards the circumferential surface of arc voussoir (24) and/or the circumferential surface of support lantern ring (25).

4. according to claim 1 hinge, it is characterized in that, in the support lantern ring (25) and/or the collar (19), insert a sliding bearing sleeve (32) that reduces arc voussoir (24) cliding friction.

5. hinge according to claim 4 is characterized in that, sliding bearing sleeve (32) scribbles lubricant (31) towards the circumferential surface of arc voussoir (24).