WO2021206646A1

WO2021206646A1 - An armrest mechanism connection embodiment

Info

Publication number: WO2021206646A1
Application number: PCT/TR2020/050360
Authority: WO
Inventors: Tolga ALTINDAL
Original assignee: Teknik Malzeme Sanayi Ve Ticaret Anonim Sirketi
Priority date: 2020-04-09
Filing date: 2020-04-30
Publication date: 2021-10-14
Also published as: TR202005641A2

Abstract

The present invention relates to an armrest mechanism (10) in order to provide movement of an arm (12), existing in armrest structure used at vehicle seats, in more than one position in the rotation axis and comprising a bracket (12) where said arm (11) is connected and a stepping mechanism (20) provided so as to stay between the two walls (121) of said bracket (12) and having a fixed gear (21). As an improvement, in order to provide connection to the seat chassis (70), a connection plate (30) is provided which is fixed to the seat chassis (70), a nut (40) connected to said connection plate (30), an axle shaft (50) connected in a shape coupling manner to said nut (40), a bolt (60) which passes through said axle shaft (50) and which provides fixation of the nut (40) and the axle shaft (50) to each other, and a connection region (52) configured to provide fixation of the fixed gear (21) on the nut (40) without having rotation freedom.

Description

AN ARMREST MECHANISM CONNECTION EMBODIMENT

TECHNICAL FIELD

The present invention relates to an armrest mechanism which provides movement of the armrest, used in vehicle seats, in more than one position in rotation axis, and a connection embodiment which provides connection of said armrest mechanism to the seat chassis.

PRIOR ART

In automotive, particularly in public transport vehicles, there are armrests positioned at the lateral regions of the passenger seats and driver seats. Armrests provide a safe and comfortable voyage. Armrests provide aesthetical and mechanical improvements together with the developing technology, and basically, the common characteristic of these mechanisms is that they can be moved downwardly and upwardly.

In the known state of the art, armrests are fixed to the seat lateral surface by means of a shaft. Armrests can move to a usage position and to a closed position according to the seating position. In order to provide adjustment of the armrest to more positions, there are armrests with mechanism in the present art. In the armrests comprising mechanism, the armrest angle can be adjusted at specific levels according to the angle of the seat back part.

In the literature, there is the patent application with number US2016052429. Said application relates to an arm support for a vehicle seat. Said arm base comprises an arm support assembled in a rotatable manner around a rotatable axis between a resting position and a usage position of an injection molded plastic console part. The console part comprises an assembly collar at the opposite sides of the console part. In the arm support, an assembly stud is assembled to the collar. A metal bearing ring, injected to the assembly collar, covers the assembly stud in the form of a ring, and here, a bearing surface is arranged which extends radially outwardly at each of the assembly collars, it is carried by a protrusion molded integrally to the bearing ring. In said mechanism, since the number of parts used is excessive, production costs are high. Moreover, said mechanism comprises a three- dimensional structure because of the protrusions provided on the geared part structures for transferring movement to the collar. For this reason, it cannot be produced with normal press processes as the production technology. This leads to high material costs. As a result, because of all of the abovementioned problems, an improvement is required in the related technical field.

BRIEF DESCRIPTION OF THE INVENTION

The present invention relates to an armrest mechanism, for eliminating the above mentioned disadvantages and for bringing new advantages to the related technical field.

An object of the present invention is to provide an armrest mechanism with facilitated connection to the seat chassis and where the sounds which may occur during operation are reduced.

In order to realize the abovementioned objects and the objects which are to be deducted from the detailed description below, the present invention is an armrest mechanism in order to provide movement of an arm, existing in armrest structure used at vehicle seats, in more than one position in the rotation axis and comprising a bracket where said arm is connected and a stepping mechanism provided so as to stay between the two walls of said bracket and having a fixed gear. Accordingly, in order to provide connection to the seat chassis, a connection plate is provided which is fixed to the seat chassis, a nut connected to said connection plate, an axle shaft connected in a shape coupling manner to said nut, a bolt which passes through said axle shaft and which provides fixation of the nut and the axle shaft to each other, and a connection region configured to provide fixation of the fixed gear on the nut without having rotation freedom.

In a possible embodiment of the present invention, on the axle shaft, a first bearing and a second bearing are provided where the two walls of the bracket are placed.

In a possible embodiment of the present invention, at least one washer is provided which is rested to said first bearing from one side and fixed on the axle shaft from the other side.

In a possible embodiment of the present invention, a step is provided where the second bearing is placed on the axle shaft.

In a possible embodiment of the present invention, at least one flange is provided which is rested to the axle shaft and to the bracket when the bolt is tightened. BRIEF DESCRIPTION OF THE FIGURES

Figure 1 is a frontal representative isometric view of the subject matter armrest mechanism. Figure 2 is a rear representative isometric view of the subject matter armrest mechanism. Figure 3 is a representative cross-sectional view of the subject matter armrest mechanism.

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, the subject matter armrest mechanism (1) is explained with references to examples without forming any restrictive effect only in order to make the subject more understandable.

As can be seen in Figure 1 , the subject matter armrest mechanism (10) has an arm (11), a bracket (12) provided at one end of said arm (11), and a stepping mechanism (20) provided between the two walls (121) of said bracket (12). A fixed gear (21) provided in said stepping mechanism (20) is provided as the part of the stepping mechanism (20) connected to the seat chassis (70).

Said fixed gear (21) is positioned on the axle shaft (50). Said axle shaft (50) is associated with a nut (40) connected to a connection plate (30) connected to the seat chassis (70). By means of a bolt (60) which passes through the axle shaft (50), the connection of the axle shaft (50) to the nut (40) in a rigid manner is possible.

In more details, the nut (40) is placed to a gap provided on the connection plate (30) and a head part (41) is rested to the face of the connection plate (30) which faces the seat chassis (70). The axle shaft (50) is associated to the other end of the nut (40). The axle shaft (50) and the nut (40) are connected to each other by means of shape coupling. Thus, the rotation freedom between the two parts is prevented. The bolt (60), which passes through the center of the axle shaft (50), is connected to the nut (40) and provides connection of the nut (40) and the axle shaft (50) to each other.

The axle shaft (50) is essentially provided in a cylindrical form. Flowever, thanks to the non circular structure of a connection region (52) provided on the axle shaft (50), the fixed gear (21), fixed thereon, is prevented from rotating on the axle shaft (50). There is a first bearing (55) and a second bearing (56) provided on the two sides of the connection region (52). The two walls (121) of the bracket (12) are placed on said first bearing (55) and said second bearing (56). Thus, the rotation of the bracket (12) on the axle shaft (50) so as to have rotational freedom becomes possible. The first bearing (55) and the second bearing (56) are essentially made of a material which will reduce friction. There is a washer (54) fixed in the vicinity of the first bearing (55). Said washer (54) is welded and fixed onto the axle shaft (50) from one side. The second bearing (56) seats on a step (53) provided on the axle shaft (50). A flange (57), provided on the end of the axle shaft (50), is rested to the bracket (12) when the bolt (60) is tightened and provides fixation of the bracket (12). Thus, the bracket (12), seated on the first bearing (55) and on the second bearing (56), remains between the washer (54) and the flange (57). Thus, the displacement of the bracket (12) and of the associated arm (11) in the assembly axis is prevented.

Thanks to the connection manner of the subject matter armrest mechanism (10) to the seat chassis (70), the risk of sound formation during operation is reduced. Moreover, since the connection is easy and thanks to the removable structure, the operational costs are reduced.

The protection scope of the present invention is set forth in the annexed claims and cannot be restricted to the illustrative disclosures given above, under the detailed description. It is because a person skilled in the relevant art can obviously produce similar embodiments under the light of the foregoing disclosures, without departing from the main principles of the present invention.

REFERENCE NUMBERS

10 Armrest mechanism

11 Arm

12 Bracket

121 Wall

20 Stepping mechanism

21 Fixed gear

30 Connection plate

40 Nut

41 Head part

50 Axle shaft

52 Connection region

53 Step

54 Washer

55 First bearing

56 Second bearing

57 Flange

60 Bolt

70 Seat chassis

Claims

1. An armrest mechanism (10) in order to provide movement of an arm (12), existing in armrest structure used at vehicle seats, in more than one position in the rotation axis and comprising a bracket (12) where said arm (11) is connected and a stepping mechanism (20) provided so as to stay between the two walls (121) of said bracket (12) and having a fixed gear (21), wherein in order to provide connection to the seat chassis (70), a connection plate (30) is provided which is fixed to the seat chassis (70), a nut (40) connected to said connection plate (30), an axle shaft (50) connected in a shape coupling manner to said nut (40), a bolt (60) which passes through said axle shaft (50) and which provides fixation of the nut (40) and the axle shaft (50) to each other, and a connection region (52) configured to provide fixation of the fixed gear (21) on the nut (40) without having rotation freedom.

2. The armrest mechanism (10) according to claim 1 , wherein on the axle shaft (50), a first bearing (55) and a second bearing (56) are provided where the two walls (121) of the bracket (12) are placed.

3. The armrest mechanism (10) according to claim 2, wherein at least one washer (54) is provided which is rested to said first bearing (55) from one side and fixed on the axle shaft (50) from the other side.

4. The armrest mechanism (10) according to claim 2, wherein a step (53) is provided where the second bearing (56) is placed on the axle shaft (50).

5. The armrest mechanism (10) according to claim 4, wherein at least one flange (57) is provided which is rested to the axle shaft (50) and to the bracket (12) when the bolt (60) is tightened.