CN203780377U - Side structure of seat back frame of car seat - Google Patents

Abstract

The utility model relates to a side structure of a seat back frame of a car seat. The side structure comprises a bar-shaped upper frame and a plate-shaped lower frame, wherein the lower frame is fixed to the upper frame, and comprises a first surface and at least one second surface; the first surface faces the width direction of the car seat; the second surface extends from the first surface in the width direction of the car seat through a bending part; a constant angle of the second surface is formed relative to the first surface; the side surface of the upper frame faces the first surface and the second surface of the lower frame.

Description

The construction profile of the backrest frame of seat

The cross reference of related application

The application requires the preceence of No. 2013-068691st, the Japanese patent application of submitting on March 28th, 2013, and its full content is hereby incorporated by.

Technical field

Aspect of the present utility model relates to a kind of construction profile of backrest frame of seat.

Background technology

The construction profile of the backrest frame of seat is open in JP-A-2013-001255 and JP-A-2012-030634.Be coupled in the situation of plate-shaped frame at the bar-shaped framework with tubulose, known to making plate-shaped frame distortion to conform to connect the technology of framework with bar-shaped frame facet shape.In addition, be also known as the back space that ensures back of seat, the technology of the lateral members of bending backrest frame, as disclosed in JP-A-2012-030634.

Utility model content

For continuously change by drawing process flat part and and the part that conforms to of bar-shaped frame facet shape between plate-shaped frame, be necessary to make gradually plate-shaped frame approach target shape by multiple processes, thereby need time and manpower.

Completed in view of the above problems aspect of the present utility model, and an object is that the shape by simplifying the member for connecting framework reduces manufacturing cost.

According to an aspect of the present utility model, a kind of construction profile of backrest frame of seat is provided, comprising: bar-shaped upper frame; With tabular underframe, described underframe is fixed to described upper frame, described underframe comprises first surface and at least one second surface, described first surface is towards seat width direction, described second surface extends in described seat width direction via curve from described first surface, described second surface forms a constant angle with respect to described first surface, and wherein, the side surface of described upper frame is towards described first surface and the described second surface of described underframe.

Utilize above-mentioned structure, because simple underframe is configured to the second surface that has first surface and extend via curve from described first surface, can suppress its manufacturing cost.

Brief description of the drawings

Fig. 1 is the transparent view illustrating according to the seat of embodiment of the present utility model;

Fig. 2 is the transparent view of the backrest frame assembly of the seat of Fig. 1;

Fig. 3 is the lateral plan when the main frame in the backrest frame in Fig. 2 when outside on seat Width is observed and the coupling part between right side frame;

Fig. 4 is the front elevation of the coupling part of the Fig. 3 when from forward observation;

Fig. 5 is the section drawing that the V-V along the line of the coupling part of Fig. 3 intercepts; And

Fig. 6 is the view illustrating for the manufacture of the welding process of the backrest frame of Fig. 2.

Detailed description of the invention

Aspect of the present utility model is described with reference to the accompanying drawings below.Seat 10 for automobile or truck comprises: seat cushion 11, and occupant occupies on this seat cushion 11; With back of seat 13, this back of seat 13 is as occupant's backrest.As an aspect, back of seat 13 can comprise the headrest of the head that supports occupant integratedly, as shown in Figure 1.Each framework that forms framed structure (cushion frame 15 and backrest frame 20) that includes in seat cushion 11 and back of seat 13.The structure that framework is normally made up as steel of metallic material.The framework of headrest can be configured to a part for the framework of back of seat 13, as shown in Figure 1, maybe can provide the framework of separation.The liner of being made up of isocyanurate foam etc. is attached to framework and supports that to form occupant's takes a seat surface or seat back surface.Liner is provided the lid that covers of design sense or sense of touch.The profile of seat 10 is shown in Fig. 1.

By connecting multiple members, backrest frame 20 is formed at the frame shape that is arranged on neighboring area place in back of seat 13.As an aspect, backrest frame 20 forms around the main frame 21 of inside of back of seat 13 and the right side frame 30 of the disappearance part of compensation main frame by connecting almost, as shown in Figure 1.Particularly, as shown in Figure 2, main frame 21 extends through upper frame from the top of correct frame 20R and left frame arrives underframe 20L.Right side frame 30 forms the bottom of correct frame 20R to connect two ends of main frame 21.Main frame 21 is excellent type members of being made up of metallic material, and ring pipe is preferred.Main frame 21 can be formed and be had necessary shape by bending machining etc.The board-like material that right side frame 30 can be made of metal by processing forms.

Filament 25 extends in the framework inner space of backrest frame 20, rests on the load being applied while leaning against and carrys out support pad to overcome occupant.As an aspect, as shown in Figure 2, filament 25 can form by filament being bent to roughly V-arrangement, and wherein two upper ends are coupled to the upper frame of backrest frame 20, and is positioned at the pars intermedia joint underframe of downside.

Backrest frame 20 is connected to the rear portion of cushion frame 15, so that backrest frame rotates with respect to cushion frame 15 around the axis A in seat width direction.Particularly, known inclination-angle regulating device 40 is arranged between right side frame 30 and seat frame 15, and backrest frame 20 can be rotated by inclination-angle regulating device 40.Inclination-angle regulating device 40 can be fixed back of seat 13 by the rotation of restriction backrest frame 20 with some upright angles.Connection bracket 23 is coupled to the bottom of the part in the formation left side of main frame 21.Connection bracket 23 can form by the tabular component of being made up of metallic material is drawn into the shape conforming to the side surface of main frame 21, thereby connection bracket 23 is connected to main frame 21.Backrest frame 20 is connected to cushion frame 15 by inclination-angle regulating device 40 and connection bracket 23.Illustrate that as an aspect Fig. 1 inclination-angle regulating device 40 is only arranged on the right side of seat.But if needed, left and right sides can be put upside down, inclination-angle regulating device can only be arranged on the left side of seat.As selection, also can be arranged on symmetrically left side in the structure on the right side of Fig. 1, thereby make inclination-angle regulating device 40 be arranged on the left and right sides.

As shown in Figure 2, inclination-angle regulating device 40 is attached to the outside of the flat part 31 of right side frame 30, and it is towards seat width direction.Particularly, the flat part 31 of right side frame 30 is provided with multiple hole 37(in the drawings around six holes of rotation axis A).Inclination-angle regulating device 40 can be by will being inserted into hole 37 from the outstanding projection 41 of inclination-angle regulating device 40 and welding and attachment tabs 41 and hole 37 are attached to the outside of flat part 31 from outside.

The right-hand member of the horizontal part 21L of the formation underframe 20L of main frame 21 is connected to the inner side of the flat part 31 of right side frame 30.As an aspect, the support 39 of the inside face that the connection of horizontal part 21L can be by being connected to flat part 31 is in advance carried out.Particularly, be connected under the state of flat part 31 at support 39, the surface of support 39 is substantially parallel with flat part 31, has gap, as shown in Figure 2 between it.Described surface is provided with opening, and the right-hand member of the horizontal part 21L of main frame 21 is through described opening.The horizontal part 21L of main frame 21 is through the opening of support 39, and the surface of horizontal part 21L is soldered to the edge of opening to be coupled to support 39.Utilize above-mentioned connection, be present in the distance from the right-hand member of horizontal part 21L to the flat part 31 of right side frame 30 even if manufacture gap, gap also can be absorbed through the amount of opening by changing horizontal part.But as situation needs, horizontal part 21L can be by welding the inside face that is directly connected to planar surface 31, and without using support 39.

The lower end of the vertical portion 21R of the formation correct frame 20R of main frame 21 is connected to the top of right side frame 30.Particularly, the vertical portion 21R flat part 31 and the flange part 33 that is arranged on its front side to right side frame 30 by weld connection respectively.Flange part 33 extends toward the outer side by curve 32 from flat part 31 on seat Width.Flange part 33 preferably forms by simple bending board-like material.Term used herein " simple bending " is not the drawing process of the curvature that gradually changes as above-mentioned connection bracket 23, but forms the bending machining of the curve of flat shape.Simple bending is preferably realized by single processing.Therefore, as shown in Figure 2, the curve 32 that is connected to flat part 31 and flange part 33 extends with flat shape, and flange part 33 forms constant angle with respect to flat part 31.Because right side frame 30 is designed to so simple shape, so it can be made by punch process and the simple bending machining of board-like material being carried out to working pressure machine.

To weld nugget be described with further reference to Fig. 3 to Fig. 5.The vertical portion 21R of main frame 21 arranges along the outside face of flat part 31 with in the rear surface of the flange part 33 of front side, as shown in Figure 5.Flat part 31 is provided with the elongated slot 35 that length is enough to ensure necessary weld zone, and as shown in Figure 3 and Figure 5, the inside face of the edge at rear side of elongated slot 35 and vertical portion 21R is welded to one another (W3).In addition, as shown in Figure 4 and Figure 5, the front surface of the end of flange part and vertical portion 21R is welded to one another (W2).Because these parts are soldered, so as shown in Fig. 1 and 5, be applied to right side frame 30 in the case of comprising to the torque T of the component of the front side of intort vertical portion 21R, power is applied to weld nugget on compression direction, thereby favourable to intensity.As selection, flange part 33 can further stretch out instead of as shown in Figure 5, and can be provided with the elongated slot identical with flat part 31, and wherein, the edge of elongated slot is soldered to the front surface of vertical portion 21R.In addition, as selection, the vertical portion 21R of main frame 21 can not be welded to front flange, but is connected to rear flange 33.In this case, if weld nugget arranges symmetrically on fore-and-aft direction with regard to the structure shown in Fig. 3, can process the moment of torsion with respect to the torque T contrarotation shown in Fig. 1.That is to say, concrete weld nugget can depend on that the processed dynamic mode of concrete needs in the various dynamic modes that are applied to backrest frame 20 is suitably selected.

Flange part 33 is preferably arranged on front side and the rear side both sides of the flat part 31 of right side frame 30, as shown in Figure 3.By this way, even if the left side that is arranged on seat 10 due to inclination-angle regulating device 40 also can be by identical parts as left side frame, parts can be general.Particularly, more preferably by whole right side frame 30 or at least flange part 33 be designed to the shape with respect to the plane P symmetry through the rotation axis A of backrest frame 20.

Lordosis edge 33 is the front portion through the rotation axis A of backrest frame by the part to downward-extension of the angled vertical portion 21R that is arranged so that the main frame 21 connecting preferably, as shown in Figure 3.By this way, in the case of the vertical portion 21R of the formation correct frame 20R of curved major framework 21 not, back of seat 13 can have the posture naturally tilting in direction backward, as shown in Figure 1, thereby reduces the number of stress concentration portion position.

Flange part 33 can extend towards inner side on seat Width.But as shown in Figure 2, preferably flange part 33 extends toward the outer side.By this way, can reduce right side frame 30 and damage the possibility of liner, or reduce and make occupant feel to have the possibility of some foreign matters at his back or waist place.

Preferably, on whole backrest frame 20, be arranged on front side for the weld nugget of coupling member, as in Fig. 2 by as shown in Reference numeral W1 to W7.For example, the vertical portion 21R of main frame 21 and right side frame 30 are located to be welded to one another at the trailing edge towards front side (W3) at the front surface (W2) of vertical portion 21R and the edge of elongated slot 35.The part and the connection bracket 23 that form the left frame of main frame 21 are also located welding at similar point (W4 and W7).The horizontal part 21L of main frame 21 locates to be soldered to support 39 at front surface (W5).Two ends of filament 25 are located soldered at the front surface (W1) of the upper frame of backrest frame 20, the centre portion of filament 25 is soldered to the front surface of underframe (W6).Because weld nugget arranges by this way, as shown in Figure 6, can be by via welding jig permanent seat back frame 20 rear side time insert the welding torch T1 to T7 that carries out flash welding from front side and complete the welding for multiple somes W1 to W7, thereby improve the work efficiency of welding processing.

Although embodiment more of the present utility model are explanation in the above, it will be readily apparent to one skilled in the art that the utility model can be with various replacement schemes, modification and improvement enforcement, and do not depart from the purpose of this utility model.That is to say, various embodiment of the present utility model comprise various replacement schemes, modification and improvement, within it falls into the scope of claims.

The utility model provides exemplary nonrestrictive following aspect:

(1) in first aspect, a kind of construction profile of backrest frame of seat is provided, comprising: bar-shaped upper frame; With tabular underframe, described underframe is fixed to described upper frame, described underframe comprises: first surface and at least one second surface, described first surface is towards seat width direction, described second surface extends in described seat width direction via curve from described first surface, described second surface forms a constant angle with respect to described first surface, and wherein, the side surface of described upper frame is towards described first surface and the described second surface of described underframe.

(2) in second aspect, provide according to the construction profile described in first aspect, wherein, described at least one second surface of described underframe comprises and is arranged on the front side of described first surface and two second surfaces of rear side, wherein, described second surface at described front side and described rear side is mutually symmetrical and arranges in described underframe, and wherein, and the described side surface of described upper frame is towards described first surface with at the described second surface of described front side.

(3) in the third aspect, provide according to the construction profile described in first aspect or second aspect, wherein, described second surface extends on described seat width direction toward the outer side from described first surface.

Claims (3)

1. a construction profile for the backrest frame of seat, is characterized in that comprising:

Bar-shaped upper frame; With

Tabular underframe, described underframe is fixed to described upper frame, and described underframe comprises:

First surface, described first surface is towards seat width direction, and

At least one second surface, described second surface extends in described seat width direction via curve from described first surface, and described second surface forms a constant angle with respect to described first surface,

Wherein, the side surface of described upper frame is towards described first surface and the described second surface of described underframe.

2. construction profile according to claim 1,

It is characterized in that, described at least one second surface of described underframe comprises and is arranged on the front side of described first surface and two second surfaces of rear side,

Wherein, be mutually symmetrical and arrange in described underframe at the described second surface of described front side and rear side, and

Wherein, the described side surface of described upper frame is towards the described second surface in described front side and described first surface.

3. construction profile according to claim 1 and 2,

It is characterized in that, described second surface extends on described seat width direction toward the outer side from described first surface.