CN201515838U

CN201515838U - Folding chair

Info

Publication number: CN201515838U
Application number: CN2009201504397U
Authority: CN
Inventors: 曾春荣
Original assignee: Xinye Enterprise Co Ltd
Current assignee: Xinye Enterprise Co Ltd
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-06-30
Anticipated expiration: 2019-04-30

Abstract

A folding chair, comprises a seat frame, a back frame capable of being pivoted relative to the seat frame, two right and left spaced handrail units, two pin joint bases fixed with the handrail units respectively, a forefoot frame, a rear foot frame and two right and left connecting units. The utility model is characterized in that the pin joint base comprises a first pivoting portion and a second pivoting portion, which are arranged fore and after. The top ends of two front side bars of the forefoot frame are pivoted with the first pivoting portion at the same side. The top ends of two rear side bars of the rear foot frame are pivoted with the second pivoting portion at the same side. The connecting unit comprises a connecting piece for connecting the pair of front side bars and the pair of rear side bars and a pivoting plate for connecting the pair of rear side bars and the seat frame. Under the condition that the folding chair is in the retracting state, the front side bars and the rear side bars extend straight to hold down to the minimum volume.

Description

Fold-down seat

Technical field

The utility model relates to a kind of fold-down seat, particularly relates to a kind ofly for seating, and adjusts back of the body frame angle and the fold-down seat of lying to layback.

Background technology

Consult Fig. 1,2, be the fold-down seat 1 of this case applicant in No. 93206165 patent case of TaiWan, China patent of previous application, and comprise: two between left and right every armrest unit 11, back of the body frame 12 that is arranged on the rear end of these armrest unit 11 pivotly, with these armrest unit 11 articulate one before foot rest 13 be articulated in the inboard of these preceding foot rests 13 and rear leg 14 and the seat bar 15 that level is extended forward respectively with a rear leg 14, two, and a pin that is hubbed at the front end of these armrest unit 11 and a bar 15 leans on frame 16.

These armrest unit 11 all comprise: the plate body 112, that an end and this back of the body frame 12 articulates and the flat forward bar of stretching 111, two compartment of terrains, the left and right sides are installed in these bar 111 root edges is arranged in the chute 110 of pairing paired plate body 112 and the pin member 113 on the top of foot rest 13 before linking, and a lock member 114 that is arranged in the outer end of this pin member 113.

Foot rest 13 comprises before described: two between left and right every and the antero-lateral rod 131 of pin member 113 pivot joints of top and homonymy, an and preceding bottom bar 132 that is connected the bottom of these antero-lateral rods 131.Described rear leg 14 comprise two between left and right every and the postero lateral arm 141, stretched to retreading be connected the back bottom bar 142 of the bottom of these postero lateral arms 141, two swing arms 143 that distinctly are hubbed at the rear side of these postero lateral arms 141, and two antero-lateral rods that distinctly are hubbed at homonymy 131 near in the middle of the connecting rod 144 of 143 of swing arms of place and homonymy.Described postero lateral arm 141 comprises that one is positioned at top section and is articulated in the assembling section 145 of the upper end of this antero-lateral rod 131, and one is extended downwards and frame leans against upright section 146 of ground support from this assembling section 145.And this swing arm 143 has first end 147 that articulates with postero lateral arm 141, and second end 148 that articulates with the end of this connecting rod 144.

Consult Fig. 1,2,3, this fold-down seat 1 can one as shown in Figure 1 the sitting state, as shown in Figure 2 face upward the state of lying, and change between collapse state as shown in Figure 3.When being positioned at the sitting state, these pin member 113 are positioned at chute 110 rear ends of armrest unit 11, and by lock member 114 be closely against the outside plate body 112 and locate.

When user's desire is adjusted posture seating angle, need earlier that each lock member 114 is all loose from pairing plate body 112, lie backward then and be against this back of the body frame 12, this back of the body frame 12 can serve as that axially the back pivot is put with second end 148 of these swing arms 143, spur these bar 111 relative these antero-lateral rod 131 tops displacements backward simultaneously, at this moment, this pin can be by these bar 111 pullings and toward top offset by frame 16, pin is by frame 16 and drive upwards pivot pendulum of seat bar 15, last these antero-lateral rod 131 tops are by these pin member 113 against these chute 110 front ends and spacing live, this fold-down seat 1 is located in the state of lying of facing upward shown in Figure 2, and this moment, this back of the body frame 12 was positioned the maximum angle position of pivot pendulum backward.

Make back of the body frame 12 when being positioned at other lying angle, then need with this back of the body frame 12 be adjusted to institute must the extension angle after, lock these lock members 114 again and finish and locate adjustment.

And this fold-down seat 1 is when being positioned at this collapse state, these back of the body frames 12, armrest unit 11, preceding foot rest 13, rear leg 14, pin by members such as frame 16 all mutually near and roughly be upright extension shape.

Because assembling section 145 direct and antero-lateral rod 131 pivot joints of the postero lateral arm 141 of this fold-down seat 1, and in order to make antero-lateral rod 131 and postero lateral arm 141 when folding, can be upright extension shape approximately, therefore this postero lateral arm 141 in design, its assembling section 145 is different with the bearing of trend of the upright section 146 of support, making its junction is that angle connects bendingly, the upright section 146 of this support is folded with being about upright extension under collapse state, but also therefore when making postero lateral arm 141, must have more the step of bending process.And postero lateral arm 141 whole non-straight are extended, aesthetic property is comparatively not enough, add that its bending structure making and adding difficult control the in man-hour, in case design or making were not at that time, postero lateral arm 141 and antero-lateral rod 131 just may block mutually and be extruded into and can not fold minimum state, make the volume of timber after fold-down seat 1 folds can't reach minimum and the waste parking space.And when this fold-down seat 1 being positioned different facing upward at every turn and lying state, after all will unclasping these lock members 114 earlier and adjusting these back of the body frame 12 angles, again lock member 114 is locked again, adjust use inconvenient.

The utility model content

The purpose of this utility model is can dwindle the fold-down seat that folds the volume of timber and structure innovation providing a kind of.

The utility model fold-down seat comprises: one sits pin joint seat, a preceding foot rest, a rear leg and two connection unit that armrest unit, two that back of the body frame, two that frame, is assembled in the rear side of this seats frame pivotly is assembled in the left and right sides of this back of the body frame is pivotly assembled regularly with these armrest unit respectively.

Described pin joint seat all comprises first a pivot portion that is positioned at the front side, and second a pivot portion that is positioned at rear side.Should before foot rest be the below that is assembled in these armrest unit pivotly, and comprise two between left and right every antero-lateral rod, the top of these antero-lateral rods articulates with the first pivot portion of the pin joint seat that is positioned at homonymy.This rear leg is the rear side that is assembled in this preceding foot rest pivotly, and comprise two between left and right every postero lateral arm, the top of these postero lateral arms articulates with the second pivot portion of the pin joint seat that is positioned at homonymy.These connection unit are positioned at the left and right sides of this seat frame, and comprise that all a binding is positioned at the antero-lateral rod of homonymy and the connecting piece of postero lateral arm, and a binding is positioned at the postero lateral arm of homonymy and the pivot connecting plate of seat frame, described pivot connecting plate comprises the 3rd a pivot portion that links this seat frame, and the 4th a pivot portion that links this postero lateral arm.

The beneficial effects of the utility model are: by antero-lateral rod and postero lateral arm all out of the ordinary with the pin joint seat pivot joint, and utilize connection unit to connect members such as these preceding foot rests, rear leg and seat frame, said structure is not only innovated, and makes this fold-down seat can reach the minimum volume of timber after folding.

Description of drawings

Fig. 1 is a kind of stereogram of known fold-down seat;

Fig. 2 is that this fold-down seat is positioned at the side view of facing upward the state of lying;

Fig. 3 is the side view that this fold-down seat is positioned at a collapse state;

Fig. 4 is the stereogram of a preferred embodiment of the utility model fold-down seat;

Fig. 5 is the side view that the preferred embodiment is positioned at a sitting state;

Fig. 6 is that the preferred embodiment is positioned under this sitting state the partial sectional view of its subelement;

Fig. 7 is the three-dimensional exploded view of the preferred embodiment subelement;

Fig. 8 is that the preferred embodiment is positioned at the side view of facing upward the state of lying;

Fig. 9 is that the preferred embodiment is positioned at this and faces upward under the state of lying the partial sectional view of its subelement;

Figure 10 is the side view of the preferred embodiment under half collapse state;

Figure 11 is the side view after the preferred embodiment folds fully.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is elaborated:

Consult Fig. 4,5,6, the preferred embodiment of the utility model fold-down seat comprises: a level also has seat frames 21, a back of the body frame 22 of the U font of two long limits and a minor face, two armrest unit 3, two pin joint seats 4, preceding foot rest 5, rear leg 6, two connection unit 7 and a pin by unit 8.

This back of the body frame 22 is to assemble with this seat frame 21 and armrest unit 3 pivotly.These armrest unit 3 are the left and right sides that distinctly are connected this back of the body frame 22 pivotly, and comprise that all front and back are to the handrail 31 that extends, one is arranged on the bottom of this handrail 31 linkedly and has a leading section 321 at interval, front and back and the carriage release lever 32 of a rearward end 322, below that is positioned at handrail 31 and ring set are at the sleeve 33 of the periphery of this carriage release lever 32, ring set is at the leading portion of this carriage release lever 32 and be positioned at the elastic component 34 of sleeve 33 front sides, one is positioned at the rear end of handrail 31 and is used to link this handrail 31, carriage release lever 32 is carried on the back first pivot 35 of frame 22 with this, and one is used to link the leading section 321 of this carriage release lever 32 and second pivot 36 that this pin leans on the top of unit 8.

Wherein, described handrail 31 comprises a handrail body 311 that is positioned at the top, and two assembled wall 312 of extending downwards from the left and right sides of this handrail body 311.Aforementioned carriage release lever 32 is arranged between these assembled wall 312, and described elastic component 34 is compression springs, and between the leading section 321 and sleeve 33 of this carriage release lever 32.

These pin joint seats 4 are the belows that distinctly are arranged on the sleeve 33 of these armrest unit 3, each pin joint seat 4 comprises that all a level is positioned at the basal wall 41 of the lower surface of sleeve 33, and two between left and right every and the fixation wall 42 of extending downwards from basal wall 41, these first pivot portions 421 that are positioned at the front side of fixation wall 42 common formation, and second a pivot portion 422 that is positioned at rear side, the height and position of the described second pivot portion 422 is higher than this first pivot portion 421.

Should link with seat frame 21 and armrest unit 3 pivotly with connection unit 7 by these pin joint seats 4 by preceding foot rest 5, should before foot rest 5 comprise: straight forward tiltedly the stretching in compartment of terrain, two left and right sides and support the preceding bottom bar 52 that the antero-lateral rod 51 that stands in ground, a level are connected antero-lateral rod 51 bottoms and two forward foot in a step pivots 53 that distinctly are positioned at the top of antero-lateral rod 51.Wherein, the top of these antero-lateral rods 51 is stretched between these fixation wall 42 of this pin joint seat 4, and links by the first pivot portion 421 of forward foot in a step pivot 53 with this pin joint seat 4.

6 rears of this rear leg at this preceding foot rest 5, and by pin joint seat 4 and connection unit 7 and pivotly with armrest unit 3 and sit frame 21 and link, this rear leg 6 comprises: compartment of terrain, two left and right sides the is straight backward postero lateral arm of tiltedly stretching 61, a level are connected the back bottom bar 62 of the bottom of postero lateral arm 61, and two rear foot pivots 63 that distinctly are positioned at the top of postero lateral arm 61.Wherein, the top of these postero lateral arms 61 is stretched between these fixation wall 42 of this pin joint seat 4 and is positioned at the rear of antero-lateral rod 51, and postero lateral arm 61 is to link by the second pivot portion 422 of rear foot pivot 63 with this pin joint seat 4.

Consult Fig. 4,5,7, these connection unit 7 are distinctly to be arranged on the left and right sides of sitting frame 21, and all comprise a connecting piece that links this antero-lateral rod 51 and postero lateral arm 61 71, one link this postero lateral arm 61 and the pivot connecting plate 72 of sitting frame 21, one link the 3rd pivot 73 of this connecting piece 71 and antero-lateral rod 51, the 4th pivot 74 that links this connecting piece 71, pivot connecting plate 72 and sit frame 21, and Wushu axle 75 that links this postero lateral arm 61 and pivot connecting plate 72.

Wherein, described connecting piece 71 is the L font approximately, and comprises the binding wall 711 of front and back to the inboard that extends antero-lateral rod 51 and postero lateral arm 61, and an end from this binding wall 711 bends outwards and is positioned at the abutment walls 712 at the rear of postero lateral arm 61.This pivot connecting plate 72 comprises that one links this connecting piece 71 and the 3rd pivot portion 721 that sits frame 21 and stretch through for the 4th pivot 74, and the 4th a pivot portion 722 that links this postero lateral arm 61 and stretch through for this Wushu axle 75.

This pin is to be attached at these handrails 31 and the front side of sitting frame 21 pivotly by unit 8, and comprises a pin by frame 81, and two between left and right every and this pin is sat the pivot ear 82 that the front end of frame 21 articulates by frame 81 and this.

The utility model fold-down seat can a sitting state, shown in Fig. 4,5 as shown in Figure 8 face upward the state of lying, and change between a collapse state as shown in figure 11.Consult Fig. 4,5,6, when this fold-down seat was positioned at the sitting state, this back of the body frame 22 was slightly larger than 90 degree with the angle of this seat frame 21, and the leading section 321 of this carriage release lever 32 is away from this sleeve 33, this elastic component 34 is not compressed as yet, and this pin is by the bottom bar of frame 81 ground that reclines.

Consult Fig. 5,8,9, adjusting posture seating angle faces upward when lying state to this, the user only need lie backward and lean on, just move this back of the body frame 22 is pivoted backward and drive each associated components, and the start process of each member such as following: this back of the body frame 22 is a fulcrum and pivoting backward with itself and articulated section of sitting frame 21, spurring handrail 31 and carriage release lever 32 simultaneously moves backward relative to these preceding foot rests 5 and rear leg 6, this moment, this pin was spurred and past top offset by these carriage release levers 32 by frame 81, and be that fulcrum makes make progress pivot pendulum and away from ground of its bottom bar with second pivot 36 simultaneously, this pin drives these seats frame 21 front sides pivot that makes progress by the displacement meeting of frame 81 and puts.

In state conversion process, this carriage release lever 32 is relative these sleeves 33, preceding foot rest 5 and rear leg 6 move backward, therefore the leading section 321 of carriage release lever 32 is gradually near sleeve 33, leading section 321 cooperates with sleeve 33 and compresses this elastic component 34, elastic component 34 so accumulate one all the time forward pushing and pressing strength, this elastic component 34 can be used as the buffering of state conversion process on the one hand, avoid carrying on the back frame 22 just pivots and excessive velocities quickly backwards, and avoid element directly to run foul of each other, on the one hand when the user stands up, can try hard to recommend moving this carriage release lever 32 by the elastic reset of elastic component 34 and move forward, and then interlock this back of the body frame 22 and pin lean on member such as frame 81 to be returned to this sitting state.And the user is toward layback when lying in any angle, and elastic component 34 reset force forward can both be reached balance with the strength that the user lies toward layback, thereby makes this fold-down seat be positioned arbitrary angle position of lying of facing upward.

Consult Fig. 5,10,11, below this fold-down seat of explanation is become the process of this collapse state by this sitting state folding, the front end application of force prior to armrest unit 3, making armrest unit 3 is make progress pivot pendulum of fulcrum with first pivot 35, the front end that makes this armrest unit 3 is gradually near this back of the body frame 22, at the same time, armrest unit 3 drives these pin by frame 81 and sit frame 21 pivot pendulum and rely on this back of the body frame 22 backward.Described pin joint seat 4 moves along with armrest unit 3, and its first pivot portion 421 upwards is positioned at the top, front side of the second pivot portion 422 gradually, thereby interlock is somebody's turn to do preceding foot rest 5 and rear leg 6 is adjacent to each other, and this fold-down seat just is transformed into this collapse state at last.This moment, abutment walls 712 rear that is positioned at postero lateral arm 61 of connecting piece 71 can be used as spacing usefulness, avoided the top of this seats frame 21 to continue pivot backward.

Comprehensively above-mentioned, antero-lateral rod 51 of the present utility model and postero lateral arm 61 directly do not link to each other, but by first of pin joint seat 4, two pivot portions 421,422 link, therefore antero-lateral rod 51 and postero lateral arm 61 can be straight extension shape, can not block mutually after folding yet and be extruded into, this is because under the sitting state, first, two pivot portions 421,422 is one low one high design, so could under collapse state, become tandem relative position, foot rest 5 erectly is positioned at the front side of this rear leg 6 before making, when therefore the utility model folded, preceding foot rest 5 and rear leg 6 all were upright extension shape fully and make the volume of timber after folding reach minimum.

In addition, the binding design that this back of the body frame 22 and armrest unit are 3, and related elements such as this elastic component 34 are set, the distance that this armrest unit 3 of adjustment that the utility model can stepless is moved backward, and then adjust this back of the body frame 22 and this pin pivot pivot angle degree simultaneously by frame 81, and can make this back of the body frame 22 be positioned any one lying angle, and quite convenient in the use, so the utility model can omit the oblique hade degree that the detent mechanism that other is set is located this back of the body frame 22.

Claims

1. fold-down seat comprises: sit frame, a back of the body frame that is assembled in the rear side of described seat frame pivotly for one, and two armrest unit that are assembled in the left and right sides of described back of the body frame pivotly, it is characterized in that described fold-down seat also comprises:

Two pin joint seats are assembled regularly with described armrest unit respectively, and all comprise first a pivot portion that is positioned at the front side, and second a pivot portion that is positioned at rear side;

A preceding foot rest is assembled in the below of described armrest unit pivotly, and comprise two between left and right every antero-lateral rod, the top of described antero-lateral rod articulates with the first pivot portion of the pin joint seat that is positioned at homonymy;

A rear leg, be assembled in pivotly described before the rear side of foot rest, and comprise two between left and right every postero lateral arm, the top of described postero lateral arm articulates with the second pivot portion of the pin joint seat that is positioned at homonymy; And

Two connection unit, be positioned at the left and right sides of described seat frame, and comprise that all a binding is positioned at the antero-lateral rod of homonymy and the connecting piece of postero lateral arm, and a binding is positioned at the postero lateral arm of homonymy and the pivot connecting plate of seat frame, described pivot connecting plate comprises the 3rd a pivot portion that links described seat frame, and the 4th a pivot portion that links described postero lateral arm.

2. fold-down seat according to claim 1, it is characterized in that: the connecting piece of described connection unit comprises the binding wall of front and back to a side that extends described antero-lateral rod and postero lateral arm, and abutment walls that is connected the terminal of described binding wall and is positioned at the rear of postero lateral arm, described connection unit all also comprises the 4th pivot that links the 3rd pivot, the 3rd a pivot portion that links described connecting piece, pivot connecting plate of described connecting piece and antero-lateral rod and sit frame, and a Wushu axle that links the 4th pivot portion of described postero lateral arm and pivot connecting plate.

3. fold-down seat according to claim 1, it is characterized in that: described armrest unit comprises that all front and back are to the handrail that extends, one is arranged on the bottom of described handrail linkedly and has a leading section at interval, front and back and the carriage release lever of a rearward end, below that is positioned at described handrail and ring set are at the sleeve of the periphery of described carriage release lever, ring set is at the leading portion and the elastic component between the leading section of described sleeve and carriage release lever of described carriage release lever, and one be positioned at the rear end of handrail and be used to link described handrail, first pivot of carriage release lever and described back of the body frame, described fold-down seat can be faced upward between the state of lying a sitting state and one and change, when described fold-down seat is positioned at described sitting state, the leading section of described carriage release lever is away from described sleeve, when described fold-down seat is positioned at described facing upward when lying state, the contiguous described sleeve of the leading section of described carriage release lever, described elastic component are subjected to described leading section and sleeve and compress and accumulate an elastic reset power forward.

4. fold-down seat according to claim 1 is characterized in that: described fold-down seat also comprises a pin that is attached at the front side of described armrest unit and described seat frame pivotly and leans on the unit.

5. fold-down seat according to claim 3 is characterized in that: described fold-down seat also comprises a pin that is attached at the front side of described armrest unit and described seat frame pivotly and leans on the unit.

6. fold-down seat according to claim 3, it is characterized in that: described pin joint seat is the below that distinctly is arranged on the sleeve of described armrest unit, each pin joint seat all comprises two between left and right every the fixation wall of also extending downwards, the aforementioned first pivot portion and the second pivot portion are formed jointly by described fixation wall, and the top of described antero-lateral rod and postero lateral arm is all upwards stretched between the described fixation wall.

7. fold-down seat according to claim 1 is characterized in that: the height and position of the second pivot portion of described pin joint seat is higher than the described first pivot portion.