CN2710447Y

CN2710447Y - Regulation gear of folding chair back

Info

Publication number: CN2710447Y
Application number: CN 200420052544
Authority: CN
Inventors: 陈高山
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-20
Filing date: 2004-07-20
Publication date: 2005-07-20
Anticipated expiration: 2014-07-20

Abstract

The utility model relates to a regulation gear of folding chair back, a collapsible crossing connecting rod is connected between a front expansion rod and a back expansion rod, the crossing connecting rod comprises an external crossing rod and an internal crossing rod which are pivoted at the middle parts, and the utility model also comprises handrails, a back rod and a drawbar. The front end of the handrails are movably connected with the upper end part of the front expansion rod, the back end is pivoted at the upper end part of the back expansion rod, the back rod comprises an upper back rod and a bottom back rod, a socket is fixed with the bottom end of the upper back rod, the upper end part of the bottom back rod is movably inserted into the socket, and the socket can rotatablely connected with the upper part of the back expansion rod. The bottom end part of the bottom back rod is rotatablely sliding arranged on the external crossing rod, the handrail can be sliding sheathed with an adjusting sliding component, an adjusting buckling component is arranged under the adjusting sliding component, a plurality of fixing bores which can match with the adjusting buckling component are arranged under the handrail, the upper end of the drawbar is pivoted on the moving adjusting sliding component and the bottom end is pivoted on the bottom back rod. The chair back of the utility model has a large-scale adjustable inclined angle in order to adjust the chair as a chaise chair, and the chair cannot rock when using.

Description

The guiding mechanism of the folding seat chair back

Technical field

The utility model relates to the parts of folding seat, specifically is meant a kind of guiding mechanism of the folding seat chair back.

Background technology

Outdoor leisure activity at present is subjected to generally paying attention to, and many houses articles for use have conveniently the characteristics of collecting, carrying simultaneously, and at user's demand, existing leisure chaise longue has folding closing function usually, so that easy to carry when going out to lie fallow.On the other hand, for more demands of suitable user, the gradient of the folding seat chair back is typically designed to adjustable.

The folding seat 1 of existing adjustable chair back gradient, referring to figs. 1 through Fig. 5, its fold mechanism mainly comprises handrail 11, front support rod 12, back stay 13, back of the body bar 14 and outer cross bar 15, wherein, handrail 11 joins with the contiguous block 111 that is connected front support rod 12 upper ends 121 and back stay 13 upper ends 131, handrail 11 terminal 112 joins with back of the body bar 14, the end 122 of front support rod 12 is connected with 151 about 2/5ths places, upper end of outer cross bar 15 with rivet 123, back stay 13 terminal 132 is connected with contiguous block 161 on the back foot lever 16, back of the body bar 14 is the knee that a bottom bends forward, be connected with the fixed block 162 of back on the foot lever 16 in nearly middle part, the end 141 and a slide block 152 of back of the body bar 14 join, and slide block 152 is sheathed on the outer cross bar 15.

When desire is adjusted chair back gradient, to carry on the handrail 11 earlier with reference to Fig. 3, after draw handrail 11 preceding or postpone, make contiguous block 111 enter another groove 113 of handrail 11 lower ends, this moment, the contiguous block 161 of back stay 13 ends was last or following, and back of the body bar 14 is owing to the traction of handrail 11, and its angle can be done suitable adjustment, and the slide block 152 of back of the body bar 14 ends 141 can slide on outer cross bar 15 to cooperate the adjustment of back of the body bar 14 angles.And during this folding seat folding, with reference to Fig. 4, Fig. 5.

Aforementioned folding seat has following shortcoming: at first, the end of back of the body bar 14 is inserted in the slide block 152, in order to realize that slide block 152 can drive back of the body bar 14 ends and slide on outer cross bar 15, jack 153 on the slide block 152 must be greater than the caliber of back of the body bar 14, instability when therefore using, after particularly long-term the use, easilier member is worn because of rocking; Secondly, the slip of slide block 152 is subjected to the restriction of outer cross bar 15 infalls 154, thereby 14 angles that can regulate of back of the body bar are subjected to great restriction.

The utility model content

The utility model provides a kind of guiding mechanism of the folding seat chair back, instability that its main purpose is to overcome existing folding seat when using, the limited shortcoming of angle that can regulate of wearing and tearing, the chair back easily.

The utility model adopts following technical scheme: the guiding mechanism of the folding seat chair back, comprise front stretching bar and rear telescopic rod, connect by a collapsible cross link between front stretching bar and the rear telescopic rod, cross link is articulated in the middle part by outer cross bar and interior crossbar and forms, the top of outer cross bar is positioned at forward side, also comprise handrail, back of the body bar, draw bar, the handrail front end is movably connected on front stretching bar upper end, the rear end is hubbed at the rear telescopic rod upper end, back of the body bar comprises back of the body bar and lower back bar, last back of the body bar lower end is installed with a sleeve, the activity of lower back bar upper end is inserted in this sleeve, this sleeve is rotationally connected with rear telescopic rod top, and the bottom of lower back bar is slidedly arranged on the outer cross bar rotationally, slidably is arranged with one on the handrail and adjusts saddle, this adjustment saddle below is provided with one and adjusts fastener, the handrail below is arranged with some fixing holes that can cooperate with the adjustment fastener, and the upper end of draw bar is hubbed to be adjusted on the saddle, and lower ending pivot is located on the lower back bar.

When desire is adjusted chair back angle, press the adjustment fastener, make it break away from the fixing hole of handrail below, to adjust saddle promotes forward, the adjustment fastener is matched with in another fixing hole, and the draw bar upper end is with adjusting saddle forward, and its lower end pulling lower back bar makes progress to front slide along outer cross bar, lower back bar can slide up and down in the sleeve of last back of the body bar below, lower back bar is elongated or shortened, and simultaneously, lower back bar drives this sleeve and rotates, last back of the body bar and rotation thereupon, thus make the gradient of the chair back adjusted.In addition, during folding the handrail front end is separated with front stretching bar upper end, front stretching bar and rear telescopic rod are drawn close mutually, and each rod member is also drawn close to central authorities, with the folding fasciculation.

Aforementioned handrail outer peripheral face both sides are provided with chute along its length, adjust the saddle inner peripheral surface and are provided with the raised line that cooperates with this chute.

The cross sectional shape of aforesaid outer cross bar is a rectangle, descends outer position, two sides to be respectively equipped with a raised line thereon, and other has a saddle to be wrapped in slidably outside this two raised line, and the bottom of lower back bar is articulated on this saddle.The slip of this saddle is not subjected to the restriction of outer cross bar and interior crossbar junction, thereby chair back inclination angle adjusting range is bigger.And lower back bar is connected with outer cross bar by saddle, can not produce and rock, and is more firm during use.

By above-mentioned description to the utility model structure as can be known, compare, the utlity model has following advantage with prior art: one, the whole amplitude of chair back tilt adjustable is big, can be adjusted to chaise longue; Two, use firmly, can not produce and rock.

Description of drawings

Fig. 1 is the perspective view of prior art folding seat;

Fig. 2 is a prior art folding seat side structure schematic diagram;

Fig. 3 is the syndeton schematic diagram of prior art folding seat front support rod, back stay and handrail;

Fig. 4 is a foot lever folding schematic diagram after the prior art folding seat;

Fig. 5 is the side view after the folding of prior art folding seat;

Fig. 6 is the utility model perspective view;

Fig. 7 is the utility model side structure schematic diagram;

Fig. 8 is the utility model handrail cross-section schematic diagram;

Fig. 9 is the utility model handrail upward view;

Figure 10 is for carrying on the back the syndeton schematic diagram of bar, lower back bar and rear telescopic rod on the utility model;

Figure 11 is the syndeton schematic diagram of the utility model lower back bar and outer cross bar;

Figure 12 adjusts dynamic schematic diagram for the utility model chair back;

Figure 13 is the dynamic figure that folds of the utility model two front stretching bars;

Figure 14 is the dynamic figure that folds of the utility model two rear telescopic rods;

Figure 15 is the side structure schematic diagram after the utility model folding;

Figure 16 is adjusted into the dynamic figure of chaise longue for the utility model.

The specific embodiment

Describe the specific embodiment of the present utility model in detail below in conjunction with Fig. 6 to Figure 16.

With reference to Fig. 6 and Fig. 7, be the folding seat 2 of employing the utility model back of chair regulating mechanism, these folding seat 2 left and right sides symmetrical configuration, the left and right sides is guiding mechanism of the present utility model.This guiding mechanism comprises front stretching bar 26 and rear telescopic rod 27, connect by a collapsible cross link between front stretching bar 26 and the rear telescopic rod 27, cross link is articulated in the middle part by outer cross bar 25 and interior crossbar 250 and forms, outer cross bar 25 is outer in the outside of interior crossbar 250, the top of outer cross bar 25 is positioned at forward side, and promptly outer cross bar 25 is positioned at by on the preceding last direction to the back.

This guiding mechanism also comprises handrail 211, back of the body bar, draw bar 22, and handrail 211 front ends are movably connected on front stretching bar 26 upper ends, and the rear end is hubbed at rear telescopic rod 27 upper ends.Back of the body bar comprises back of the body bar 23 and lower back bar 24, last back of the body bar 23 lower ends are installed with a sleeve 231, with reference to Figure 10, lower back bar 24 upper end activities are inserted in this sleeve 231, and this sleeve 231 is rotationally connected with the articulated section 234 on rear telescopic rod 27 tops by a short round bar 233, rivet 235; With reference to Figure 11, the cross sectional shape of outer cross bar 25 is a rectangle, descend outer position, two sides to be respectively equipped with a raised line 251 thereon, other has a saddle 252 to be wrapped in slidably outside this two raised line 251, and the bottom of lower back bar 24 is articulated on this saddle 252 by a square block 243 and a short circular shaft 244.

Slidably be arranged with one on the handrail 211 and adjust saddle 214, with reference to Fig. 8, handrail 211 outer peripheral face both sides are provided with chute 212 along its length, adjust saddle 214 inner peripheral surfaces and are provided with the raised line that cooperates with this chute 212, thereby adjust saddle 214 and can on handrail 211, slide, but can not relatively rotate.These adjustment saddle 214 belows are provided with one and adjust fastener 215, and with reference to Fig. 9, handrail 211 belows are arranged with some fixing holes 213 that can cooperate with adjustment fastener 215.Adjust saddle 214 belows and also be provided with lug 216, be installed with a fixed block 241 on the lower back bar 24, fixed block 241 is provided with lug 242, and the upper end 221 of draw bar 22 is hubbed on the lug 216 of adjusting saddle 214 belows, and lower end 222 is hubbed on the lug 242 of lower back bar 24 fixed blocks 241.

With reference to Figure 12, when desire is adjusted chair back angle, press and adjust fastener 216, make it break away from the fixing hole 213 of handrail 211 belows, to adjust saddle 214 promotes forward, adjustment fastener 216 is matched with in another fixing hole 213, draw bar 22 upper ends 221 are with adjusting saddle 214 forward, upwards to front slide, lower back bar 24 can slide up and down in the sleeve 231 of last back of the body bar 23 belows its lower end 222 pulling lower back bars 24, and lower back bar 24 is elongated or shortened along outer cross bar 25, simultaneously, lower back bar 24 drives this sleeve 231 and rotates, on carry on the back bar 23 and rotate thereupon, thereby make the gradient of the chair back adjusted.

In addition, with reference to Figure 13 to Figure 15, handrail 211 front ends are separated with front stretching bar 26 upper ends during folding, front stretching bar 26 and rear telescopic rod 27 are drawn close mutually, and each rod member is also drawn close to central authorities, with the folding fasciculation.

With reference to Figure 16,, can pass through this junction 253, thereby chair back inclination angle adjusting range is bigger, can be adjusted into chaise longue because the slip of saddle 252 is not subjected to the restriction of outer cross bar 25 and interior crossbar 250 junctions 253.

Above-mentioned only is a 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, the guiding mechanism of the folding seat chair back, comprise front stretching bar and rear telescopic rod, connect by a collapsible cross link between front stretching bar and the rear telescopic rod, cross link is articulated in the middle part by outer cross bar and interior crossbar and forms, the top of outer cross bar is positioned at forward side, it is characterized in that: also comprise handrail, back of the body bar, draw bar, the handrail front end is movably connected on front stretching bar upper end, the rear end is hubbed at the rear telescopic rod upper end, back of the body bar comprises back of the body bar and lower back bar, last back of the body bar lower end is installed with a sleeve, the activity of lower back bar upper end is inserted in this sleeve, this sleeve is rotationally connected with rear telescopic rod top, and the bottom of lower back bar is slidedly arranged on the outer cross bar rotationally, slidably is arranged with one on the handrail and adjusts saddle, this adjustment saddle below is provided with one and adjusts fastener, the handrail below is arranged with some fixing holes that can cooperate with the adjustment fastener, and the upper end of draw bar is hubbed to move and adjusts on the saddle, and lower ending pivot is located on the lower back bar.

2, the guiding mechanism of the folding seat chair back as claimed in claim 1 is characterized in that: described handrail outer peripheral face both sides are provided with chute along its length, adjust the saddle inner peripheral surface and are provided with the raised line that cooperates with this chute.

3, the guiding mechanism of the folding seat chair back as claimed in claim 1, it is characterized in that: the cross sectional shape of described outer cross bar is a rectangle, descend outer position, two sides to be respectively equipped with a raised line thereon, other has a saddle to be wrapped in slidably outside this two raised line, and the bottom of lower back bar is articulated on this saddle.