CN2822362Y

CN2822362Y - Folding chair for grandstand

Info

Publication number: CN2822362Y
Application number: CN 200520061565
Authority: CN
Inventors: 张耀真
Original assignee: YOUYI METAL CO Ltd XIAMEN
Current assignee: YOUYI METAL CO Ltd XIAMEN
Priority date: 2005-07-14
Filing date: 2005-07-14
Publication date: 2006-10-04
Anticipated expiration: 2015-07-14

Abstract

The utility model discloses a folding stand chair which is composed of a backrest, a seat board and a handrail, wherein the handrail is formed by pivoting a transverse rod and a vertical rod. The other end of the transverse rod and the other end of the vertical rod are respectively pivoted at the middle sections of a backrest supporting rod and a seat board supporting rod. Two end parts of the backrest supporting rod and two end parts of the seat board supporting rod are pivoted together through a hinge, and the hinge is formed in the mode that two rotating disks are relatively buckled and are pivoted through a rotating shaft. The two rotating disks are respectively fixed at the end parts of the backrest supporting rod and the seat board supporting rod, and the opposite surfaces of the two rotating disks respectively form positioning convex blocks which are mutually matched. Through the relative rotation of the backrest supporting rod and the seat board supporting rod, two positioning convex blocks can be driven to rotate relatively. Through the support of the lateral surfaces of the two positioning convex blocks, unfolding and positioning between the backrest supporting rod and the seat board supporting rod are realized, and a structure reduces processing cost, packaging cost, transportation cost and inventory cost.

Description

Collapsible grandstand chair

Technical field

The utility model relates to a kind of collapsible grandstand chair.

Background technology

Traditional grandstand chair, its structure as shown in Figure 1, form by backrest and seat board and handrail 3 ', two ends of backrest pole 1 ' and two ends of seat board pole 2 ' are to be articulated by hinge 4 ', the structure of hinge 4 ' as shown in Figure 2, this hinge 4 ' only plays the pivot joint effect and does not have positioning action, handrail 3 ' is articulated by cross bar 31 ' and montant 32 ' and forms, the other end of cross bar 31 ' directly is articulated on the backrest pole 1 ' stage casing by rivet 5 ', be connected by Connection Block 6 ' between the stage casing of the other end of montant 32 ' and seat board pole 2 ', the structure of Connection Block 6 ' as shown in Figure 3, this Connection Block 6 ' has jack 61 ' and turn trough 62 ', montant 32 ' is fixed in the jack 61 ' by rivet 5 ', and the stage casing of seat board pole 2 ' is articulated in the turn trough 62 ' by rivet 5 '.

When this grandstand chair launches to use, by state shown in Figure 4 with backrest to the vertical direction pull-up, the cross bar 31 ' that promptly drives handrail 3 ' separates gradually to be with montant 32 ' and is similar to the right angle, as shown in Figure 1, montant 32 ' rotates, and drives and is fixedly coupled seat 6 ' rotation with it, seat board pole 2 ' is relatively rotated in the turn trough 62 ' of Connection Block 6 ', be butted on the seat board pole 2 ' until the limit 621 ' of turn trough 62 ', can realize that backrest and seat board launch the location, thereby finish the expansion of grandstand chair.

During this grandstand chair folding, by state shown in Figure 1 backrest is pressed down to horizontal direction, the cross bar 31 ' that promptly drives handrail 3 ' and montant 32 ' close up gradually be similar to overlapping, as shown in Figure 4, montant 32 ' rotates, and drives and is fixedly coupled seat 6 ' rotation with it, seat board pole 2 ' is relatively rotated in the turn trough 62 ' of Connection Block 6 ', be butted on until backrest pole 1 ' on the trailing flank 622 ' of Connection Block 6 ', can realize that backrest and seat board overlap the location, thereby finish the folding of grandstand chair.

The detailed structure of seeing this grandstand chair, be not difficult to find that there is following deficiency in it:

One, as shown in Figure 3, Connection Block 6 ' complex structure, processing and manufacturing cost height;

Two, as shown in Figure 4, after the folding of grandstand chair, be subjected to the interference effect of Connection Block 6 ', backrest pole 1 ' and seat board pole 2 ' be overlapping drawing close fully, cause the volume after the folding of grandstand chair bigger, be unfavorable for packing, transportation and stock, make packing, transportation and inventory cost too high.

The utility model content

The purpose of this utility model is to provide a kind of collapsible grandstand chair, to reduce processing, packing, transportation and stock's cost.

For reaching above-mentioned purpose, solution of the present utility model is:

Collapsible grandstand chair, form by backrest and seat board and handrail, handrail is articulated by cross bar and montant and forms, wherein, the other end of cross bar and montant is articulated in the stage casing of backrest pole and seat board pole respectively, two ends of backrest pole and two ends of seat board pole are to be articulated by hinge, hinge is fastened relatively by two rotating disks and forms by the rotating shaft pivot joint, two rotating disks are separately fixed at the end of backrest pole and seat board pole, form the locating convex block that cooperatively interacts on the opposite face of two rotating disks respectively, by relatively rotating between backrest pole and the seat board pole, just can drive two locating convex blocks and relatively rotate, and by replacing and realize expansion location between backrest pole and the seat board pole in the side of two locating convex blocks.

The articulated section in above-mentioned montant and seat board pole stage casing is set up a separation member at least, this separation member be set on the pivot and be in montant and seat board pole stage casing between.

Two separation members are set up in the articulated section in above-mentioned montant and seat board pole stage casing, and two separation members are separately fixed on the stage casing of montant and seat board pole, two separation members all be set on the pivot and be in montant and seat board pole stage casing between.

One end of above-mentioned two separation members forms the arcwall face that just can be fixed on montant and seat board pole respectively, cooperates with montant, seat board pole by this arcwall face, and two separation members are separately fixed on the stage casing of montant and seat board pole.

After adopting said structure, the utility model is compared with existing grandstand chair, at first because hinge not only has the pivot joint effect, but also have positioning action, so the utility model obviously can save baroque Connection Block, the utility model processing and manufacturing is easy, and cost reduces; When secondly the utility model is folding, do not have other interference of components influence, backrest pole is able to and complete overlapping the drawing close of seat board pole, and the volume after the folding of grandstand chair obviously dwindles, be more conducive to packing, transportation and stock, thereby reduced packing, transportation and stock's cost.

Description of drawings

Fig. 1 is the deployed condition schematic diagram of existing grandstand chair;

Fig. 2 is the structural representation of hinge in the existing grandstand chair;

Fig. 3 is the structural representation of Connection Block in the existing grandstand chair;

Fig. 4 is the folded state schematic diagram of existing grandstand chair;

Fig. 5 is a deployed condition schematic diagram of the present utility model;

Fig. 6 is the structural representation of hinge in the utility model;

Fig. 7 is the structural representation of separation member in the utility model;

Fig. 8 is a folded state schematic diagram of the present utility model.

The specific embodiment

As shown in Figure 5, be a kind of collapsible grandstand chair that the utility model discloses, form by backrest and seat board and handrail 3,

Handrail 3 is articulated by cross bar 31 and montant 32 and forms, the stage casing that the other end of cross bar 31 and montant 32 is articulated in backrest pole 1 and seat board pole 2 respectively, and specifically pivot joint mode has a lot, holds aftermentioned.

Two ends of backrest pole 1 and two ends of seat board pole 2 are to be articulated by hinge 4.Cooperate shown in Figure 6ly, this hinge 4 articulates by two relative fastenings with 42 of rotating disk 41 and by rotating shaft 43 and forms.Two rotating

disks

41 and 42 ends that are separately fixed at backrest pole 1 and seat board pole 2.Form locating convex block 411 and locating convex block 421 respectively on two rotating

disks

41 and 42 the opposite face, by relatively rotating between backrest pole 1 and the seat board pole 2, just can drive locating convex block 421 relatively rotates with locating convex block 411, and be butted on by the side of locating convex block 421 on the side of locating convex block 411 and realize that backrest pole 1 and the expansion between the seat board pole 2 locate, referring to Fig. 5 and 8.

When the utility model launches to use, by state shown in Figure 8 with backrest to the vertical direction pull-up to state shown in Figure 5, and be butted on the side of locating convex block 411 by the side of locating convex block 421, backrest pole 1 and seat board pole 2 are located, can realize that backrest and seat board launch the location, thereby finish the expansion of grandstand chair.And during folding, then backrest is pressed to state shown in Figure 8 to horizontal direction by state shown in Figure 5, and, can realize that backrest and seat board overlap the location by the applying location of backrest pole 1 with seat board pole 2, thus finish the folding of grandstand chair.

The utility model is compared with existing grandstand chair: at first, because hinge 4 not only has the pivot joint effect, but also have positioning action, so, the utility model has saved baroque Connection Block 6 ' in the existing grandstand chair, makes the utility model processing and manufacturing easy, and cost obviously reduces; Secondly, when the utility model folds, Connection Block 6 ' or the influence of other interference of components in the not existing grandstand chair, so, backrest pole 1 is able to and seat board pole 2 complete overlapping drawing close, volume after the folding of grandstand chair obviously dwindles, and is more conducive to packing, transportation and stock, thereby has reduced packing, transportation and stock's cost.

In addition, concrete pivot joint mode between the stage casing of the cross bar 31 of handrail 3 and the other end of montant 32 and backrest pole 1 and seat board pole 2 can be as shown in Figure 5, the other end of cross bar 31 directly is articulated in the stage casing of backrest pole 1 by rivet 5, at least set up a separation member 6 in the montant 32 and the articulated section in seat board pole 2 stage casings, present embodiment is set up two separation members 6, these two separation members 6 are separately fixed at that (concrete fixed structure has much on the stage casing of montant 32 and seat board pole 2, present embodiment is that the end at two separation members 6 forms the arcwall face 62 that just can be fixed on montant 32 and seat board pole 2 respectively, by this arcwall face 62 and montant 32, seat board pole 2 cooperates, two separation members 6 are separately fixed on the stage casing of montant 32 and seat board pole 2), two separation members 6 all be set on the pivot 61 and be in montant 32 and seat board pole 2 stage casings between.Like this, when the utility model is folding, can provide bigger running clearance between backrest pole 1, seat board pole 2 and the handrail 3 by separation member 6, make backrest pole 1 draw close with seat board pole 2 is overlapping better, further dwindle the volume after the folding of grandstand chair, and then reduced packing, transportation and stock's cost.

Claims

1, collapsible grandstand chair, form by backrest and seat board and handrail, handrail is articulated by cross bar and montant and forms, it is characterized in that: the other end of cross bar and montant is articulated in the stage casing of backrest pole and seat board pole respectively, two ends of backrest pole and two ends of seat board pole are to be articulated by hinge, hinge is fastened relatively by two rotating disks and forms by the rotating shaft pivot joint, two rotating disks are separately fixed at the end of backrest pole and seat board pole, form the locating convex block that cooperatively interacts on the opposite face of two rotating disks respectively, by relatively rotating between backrest pole and the seat board pole, just can drive two locating convex blocks and relatively rotate, and by replacing and realize expansion location between backrest pole and the seat board pole in the side of two locating convex blocks.

2, collapsible grandstand chair as claimed in claim 1 is characterized in that: the articulated section in montant and seat board pole stage casing is set up a separation member at least, this separation member be set on the pivot and be in montant and seat board pole stage casing between.

3, collapsible grandstand chair as claimed in claim 2, it is characterized in that: two separation members are set up in the articulated section in montant and seat board pole stage casing, two separation members are separately fixed on the stage casing of montant and seat board pole, two separation members all be set on the pivot and be in montant and seat board pole stage casing between.

4, collapsible grandstand chair as claimed in claim 3, it is characterized in that: an end of two separation members forms the arcwall face that just can be fixed on montant and seat board pole respectively, cooperate with montant, seat board pole by this arcwall face, two separation members are separately fixed on the stage casing of montant and seat board pole.