CN201238820Y

CN201238820Y - Bundling-shaped retractable chair with improved chair back structure

Info

Publication number: CN201238820Y
Application number: CNU2008201032118U
Authority: CN
Inventors: 陈德隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-25
Filing date: 2008-07-25
Publication date: 2009-05-20
Anticipated expiration: 2018-07-25

Abstract

The utility model provides a bunchy collapsible chair with an improved chair back, comprising a foldaway supporting bracket which is collapsible in bunchy, and a cushion and a chair back assembled on the foldaway supporting bracket, wherein the foldaway supporting bracket has two foldaway and supported back rods, and a supporting transverse rod is arranged between the two back rods. The supporting transverse rod is arranged between the two back rods of the foldaway supporting bracket, when the foldaway supporting bracket is in the unfolding state, the two back rods are not deformed due to the drawing force of the chair back, thereby the whole structure is more stable; when the supporting transverse rod is assembled and supported between the two back rods, the foldaway supporting bracket can not be foldaway, namely that the supporting transverse rod plays the role of positioning the foldaway supporting bracket in the unfolding state.

Description

A kind of fasciculation of back structure improvement folds chair

Technical field

The utility model relates to the structure that fasciculation folds chair, is meant that specifically a kind of fasciculation of back structure improvement folds chair.

Background technology

With reference to Figure 10, Figure 10-1, Figure 11 and Figure 11-1, a kind of pencil of prior art folds in the structure of chair, its two backs foot lever 11 is independent separately, no any structure supports between the two back foot levers 11, therefore, when the user takes this chair, cushion 31 and backrest 32 are subjected to the pressure of user's weight, the preceding foot lever 10 of cushion 31 and backrest 32 fits, back foot lever 11 promptly is subjected to toward the power of inner compressing, though and preceding foot lever 10 is subjected to the compression pressure that cushion 31 brings with foot lever 11 belows, back, but but it is by the support dispersive pressure of handrail support bar 13 and crossbar 12, arrow is for being subjected to force direction among the figure, and two back foot lever 11 upper semisections that are subjected to the interior compression pressure that backrest 32 brings form that no any structure supports between the part of back of the body bars, thereby deform because of continuing for a long time to be under pressure easily, and then cause structural failure and hidden danger safe in utilization.

The utility model content

The utility model provides the fasciculation of a kind of back structure improvement to fold chair, and its main purpose is to overcome not have between two back of the body bars that existing fasciculation folds chair and supports, thereby is subjected to the backrest pulling force easily and the shortcoming of being out of shape.

The utility model adopts following technical scheme: a kind of fasciculation of back structure improvement folds chair, but comprise the fasciculation folding support frame that folds and the chair cushion, the chair back that are assemblied on this folding support frame, this folding support frame has two can roll over the back of the body bar that leans on mutually, is provided with a support rail between described two back of the body bars.

The fasciculation of aforementioned a kind of back structure improvement folds chair, its folding support frame comprises two preceding foot levers, after two foot lever and be located at respectively the left side preceding foot lever and the back foot lever between, between the preceding foot lever on right side and the back foot lever, between the two preceding foot levers, crossbar between the two back foot levers, the corresponding foot lever of each crossbar is connected with two times links by link on two respectively, the described connected mode that goes up link slidably connects for rotatable, the connected mode of described link down is for being rotatably connected, the height of described two back foot levers is greater than the height of two preceding foot levers, and the raised area forms described two back of the body bars.

The fasciculation of aforementioned a kind of back structure improvement folds chair, its support rail comprises the collar, cross bar and positioning sleeve, this collar is sleeved on the described back of the body bar, one end of this cross bar is articulated on this collar, this positioning sleeve is installed in the other end of this cross bar, this positioning sleeve is sleeved on another described back of the body bar, and described two back of the body bars are provided with the protuberance that prevents that the described collar, positioning sleeve from gliding.

Further, described cross bar can comprise half section on a left side and right half section, and half section on this left side and right half section are connected the formation folding connection structure by connector.

The fasciculation of aforementioned a kind of back structure improvement folds chair, its support rail also can comprise end cap, cross bar and location end cap, this end cap is socketed on a described back of the body masthead end, one end of this cross bar is articulated on this end cap, this location end cap is installed in the other end of this cross bar, and this location end cap is socketed on the upper end of another described back of the body bar.

By above-mentioned description to the utility model structure as can be known, compare with prior art, the utlity model has following advantage: one, be provided with support rail between two back of the body bars of this folding support frame, be under the extended configuration at this folding support frame, two back of the body bars can not be out of shape because of being subjected to chair back pulling force, thereby make overall structure more steady; Two, when this support rail assembling was supported between two back of the body bars, this folding support frame can't fold, and that is to say that this support rail plays the effect that makes this folding support frame be positioned extended configuration; Three, an end of this support rail is detachable, and the other end is rotatably connected, and should detachably hold and pull down, and should turn the end folding and be against on the corresponding back of the body bar, can will fold support bar and fold.

Description of drawings

Fig. 1 is the perspective view of the utility model embodiment one;

Fig. 2 is the perspective view of the utility model embodiment one folding support frame extended configuration;

The perspective view of Fig. 2-1 the utility model embodiment one folding support frame extended configuration;

Fig. 3 is the utility model embodiment one support rail folding one schematic diagram;

Fig. 3-1 is the utility model embodiment one support rail folding two schematic diagrames;

Fig. 4 is the STRUCTURE DECOMPOSITION figure of the utility model embodiment one support rail;

Fig. 5 is the support rail assembling schematic diagram of the utility model embodiment two;

Fig. 6 is the perspective view of the utility model embodiment three;

Fig. 6-1 is the perspective view of the utility model embodiment four;

Fig. 7 is the perspective view of second kind of folding support frame of prior art;

Fig. 7-1 is the perspective view of the folding support frame of the utility model embodiment five;

Fig. 8 is the support rail assembling schematic diagram of the utility model embodiment six;

Fig. 9 is the perspective view of the folding support frame extended configuration of the utility model embodiment six;

Fig. 9-1 is the perspective view of the folding support frame collapse state of the utility model embodiment six;

Figure 10 is the perspective view of first kind of folding support frame extended configuration of prior art;

Figure 10-1 is the perspective view of first kind of folding support frame collapse state of prior art;

Figure 11 is the force diagram one of first kind of folding support frame extended configuration of prior art;

Figure 11-1 is the force diagram two of first kind of folding support frame extended configuration of prior art;

Figure 12 is the perspective view of the third folding support frame deployed condition of prior art;

Figure 12-1 is the perspective view of the third folding support frame collapse state of prior art;

Figure 13 is the perspective view of the utility model embodiment seven.

The specific embodiment

The specific embodiment of the present utility model is described with reference to the accompanying drawings.

Embodiment one

A kind of fasciculation of back structure improvement folds chair, see figures.1.and.2, but comprise fasciculation folding support frame that folds and the chair cushion 31 that is assemblied on this folding support frame, the chair back 32, this folding support frame comprises two preceding foot levers 10, after two foot lever 11 and be located at respectively the left side preceding foot lever 10 and the back foot lever 11 between, between the preceding foot lever 10 on right side and the back foot lever 11, between the two preceding foot levers 10, collapsible crossbar 12 between the two back foot levers 11, each crossbar 12 corresponding foot lever is connected with two times links by link on two respectively, the described connected mode that goes up link slidably connects for rotatable, the connected mode of described link down is for being rotatably connected, but thereby forming the structure that fasciculation folds, its collapse state can be with reference to Fig. 2-1.This folding support frame also comprises two bars 13.

See figures.1.and.2, the height of described two back foot levers 11 is greater than the height of two preceding foot levers 10, and the raised area forms two back of the body bars, is used to install the chair back 32, is provided with a support rail 20 between this two back ofs the body bar.With reference to Fig. 2, Fig. 3 and Fig. 4, this support rail 20 comprises the collar 21, cross bar 22 and positioning sleeve 23, this collar 21 is sleeved on the described back of the body bar, one end of this cross bar 22 is articulated on this collar 21, this positioning sleeve 23 is fixed at the other end of this cross bar 22, this positioning sleeve 23 is sleeved on another described back of the body bar, and described two back of the body bars are provided with the protuberance 111 that prevents that the described collar 21, positioning sleeve 23 from gliding, and can make support rail 20 be positioned certain altitude and does not glide.Above-mentioned back of the body bar refers to that back foot lever 11 exceeds the raised area of preceding foot lever 10.With reference to Fig. 4, described cross bar 22 is provided with an engagement protrusion 221 with the end that positioning sleeve 23 articulates, and positioning sleeve 23 is provided with an engagement grooves 211, and this engagement protrusion 221 is articulated in this engagement grooves 211.

With reference to Fig. 3 and Fig. 3-1, shown an end of support rail 20 has been pulled down, and received the action that is against on the back foot lever 11.

Embodiment two

With reference to Fig. 5, the structure of present embodiment and embodiment one is basic identical, difference is: its support rail comprises end cap 25, cross bar 22 and location end cap 26, this end cap 25 is socketed on a described back of the body masthead end, one end of this cross bar 22 is articulated on this end cap 25, this location end cap 26 is installed in the other end of this cross bar 22, and this location end cap 26 is socketed on the upper end of another described back of the body bar.This end cap 25, location end cap 26 are covered on the upper end of corresponding back of the body bar, are set on the back of the body bar the embodiment one but not resemble, thereby need not to be provided with protuberance 111 among the embodiment one on the back of the body bar of present embodiment.

Embodiment three

With reference to Fig. 6, the structure of present embodiment and embodiment two is basic identical, and difference is: present embodiment does not have armrest.

Embodiment four

With reference to Fig. 6-1, the structure of present embodiment and embodiment three is basic identical, difference is: the height of a preceding foot lever 10 of present embodiment is identical with the height of back foot lever 11, be provided with a bar 13 before this between the back foot lever of foot lever 10 and homonymy, the structure of this bar 13 is identical with the structure of its support rail 20, and with support rail 20 shared same end caps 24, an end of this bar 13 and this end cap 24 articulates, the other end is socketed on this preceding foot lever 10 upper ends by a location end cap.

Embodiment five

Fig. 7 is the perspective view of second kind of folding support frame of prior art, has Foldable foot support pad 40, this Foldable foot support pad 40 is equiped with an X shape cross-braced device 42 by two support bars, 41 central authorities, and can open along with overall structure folds together.Present embodiment is that the structure of this second kind of folding support frame is improved, with reference to Fig. 7-1, adopt support rail 20 to replace described cross-braced device 42, the structure of this support rail 20 is identical with support rail 20 structures among aforementioned each embodiment, is installed on the bottom of two support bars 41 of described foot support pad 40.In addition, be provided with this support rail too between its two back ofs the body bar.

Embodiment six

With reference to Fig. 8, Fig. 9, Fig. 9-1, the structure of present embodiment and embodiment one is basic identical, and its difference is: its support rail 50 comprises left and right two sections cross bars 52, be located at the connector 53 of 52 of two sections cross bars and be located at the positioning sleeve 51 of two sections cross bar 52 opposing ends.Each positioning sleeve 51 cooperates and 52 pivot joints of corresponding cross bar by engagement grooves 511, engagement protrusion 521, and two sections cross bars 52 all articulate with connector 53.With reference to Fig. 9-1, when this folding support frame folded, two cross bars, 52 junctions were folding downwards, and folding is against between the two back foot levers 11.

Embodiment seven

Figure 12, Figure 12-1 shown the structure of the third folding support frame of prior art, what be used for laterally folding folds chair, comprise cushion skeleton 61 and two back of the body bars 62 that two outside frameworks 60, two that are hollow are door type, this two cushion skeleton 61 is cross-linked the horizontal opening-closing structure of Cheng Yike between two outside frameworks 60, this two back ofs the body bar 62 is installed in respectively on two outside frameworks 60.Present embodiment improves on the basis of this third folding support frame, with reference to Figure 13, is with cushion 63 between this two cushion skeleton 61, and the support rail 20 described in the installing embodiment one between this two back ofs the body bar 62 is to strengthen the cross-brace power of two back of the body bars 62.

Above-mentioned only is the specific embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1, a kind of fasciculation of back structure improvement folds chair, but comprise the fasciculation folding support frame that folds and the chair cushion, the chair back that are assemblied on this folding support frame, this folding support frame has two can roll over the back of the body bar that leans on mutually, it is characterized in that: be provided with a support rail between described two back of the body bars.

2, fasciculation as claim 1 a back structure improvement folds chair, it is characterized in that: described folding support frame comprises two preceding foot levers, after two foot lever and be located at respectively the left side preceding foot lever and the back foot lever between, between the preceding foot lever on right side and the back foot lever, between the two preceding foot levers, crossbar between the two back foot levers, the corresponding foot lever of each crossbar is connected with two times links by link on two respectively, the described connected mode that goes up link slidably connects for rotatable, the connected mode of described link down is for being rotatably connected, the height of described two back foot levers is greater than the height of two preceding foot levers, and the raised area forms described two back of the body bars.

3, the fasciculation as claim 1 a back structure improvement folds chair, it is characterized in that: described support rail comprises the collar, cross bar and positioning sleeve, this collar is sleeved on the described back of the body bar, one end of this cross bar is articulated on this collar, this positioning sleeve is installed in the other end of this cross bar, this positioning sleeve is sleeved on another described back of the body bar, and described two back of the body bars are provided with the protuberance that prevents that the described collar, positioning sleeve from gliding.

4, the fasciculation as the improvement of claim 3 back structure folds chair, it is characterized in that: described cross bar comprises half section on a left side and right half section, and half section on this left side and right half section are connected the formation folding connection structure by connector.

5, the fasciculation as claim 1 a back structure improvement folds chair, it is characterized in that: described support rail comprises end cap, cross bar and location end cap, this end cap is socketed on a described back of the body masthead end, one end of this cross bar is articulated on this end cap, this location end cap is installed in the other end of this cross bar, and this location end cap is socketed on the upper end of another described back of the body bar.