Summary of the invention
The object of this invention is to provide a kind of simple in structure, to fold volume compacter, the folding camp chair of more portable and collection.
For achieving the above object, solution of the present invention is:
, the back-up block that it comprises a seat bracket, a chair foot support and is flexibly connected seat bracket and chair foot support; This seat bracket comprises two front support rods and at least one back pole; This chair foot support comprises at least three foot levers; On this back-up block, establish respectively the jack for each rod member of seat bracket and each foot lever plant of chair foot support, each rod member of seat bracket and chair foot support links together by elastic threads and back-up block.
Described back-up block is a cylinder block, on it, ora terminalis forms oblique surface, under cylinder block, ora terminalis also forms lower oblique surface, is the radial formation outside oblique jack that makes progress at upper oblique surface place, is the radial formation inside oblique jack that makes progress at lower oblique surface place.
The center of described back-up block is an axis hole, and each oblique jack therewith axis hole connects.
Described back-up block is a ball cup, establishes respectively the jack for each rod member of seat bracket and each foot lever plant of chair foot support on this ball cup, and the axis of each jack is to extend to the centre of sphere from sphere.
The below of described ball cup is provided with an end face, and in abutting connection with the top of this end face and therewith interval offers foot lever jack uniformly on the parallel contour of end face; An another bar jack that is provided with on the episphere of ball cup opposing end surface.
The middle mind-set centre of sphere of described end face extends a counterbore to connect each jack.
Described back-up block comprises the articulated part of upper bracket, undersetting and pivot joint upper bracket and undersetting, on upper bracket and undersetting, establish respectively the jack for each rod member of seat bracket and each foot lever plant of chair foot support, each rod member of seat bracket and chair foot support links together by elastic threads and back-up block.
The periphery of the nearly top of described upper bracket is radial formation inside oblique jack downwards; The periphery of the nearly below of undersetting is the radial formation inside oblique jack that makes progress.
In described upper bracket, be formed centrally axial pivoted hole; In undersetting, be formed centrally axial pivoted hole; Articulated part through the pivoted hole of upper bracket, the pivoted hole of undersetting so that upper bracket and undersetting are articulated.
Described articulated part can be molded directly within on upper bracket or undersetting.
On described articulated part, form necking down step, coordinate with it pivoted hole form stepped hole.
The front support rod of described seat bracket and back pole consist of more piece rod member.
Each foot lever of described chair foot support adopts more piece rod member to form.
The described front support rod consisting of more piece rod member, back pole are or/and a foot lever is realized cooperation by connecting rod, and one end of each connecting rod is fixed in a rod member, and the other end and adjacent rod member are pivot bush unit relation.
Adopt after such scheme, the back-up block of the present invention by having a jack is to coordinate each rod member of seat bracket and chair foot support can form a folding seat, and can realize folding of each rod member of folding seat and back-up block by the connection of elastic threads, reach that to fold volume compacter, simple in structure, light, more portable and the function of collection.In addition, this back-up block can consist of mutual pivot joint upper bracket and undersetting, so can make seat support realize flexible rotating, reaches the special efficacy that facilitates user's multi-angle to use flexibly.
Accompanying drawing explanation
Fig. 1 is the side view of the embodiment of the present invention 1;
Fig. 2 is the top view of the embodiment of the present invention 1;
Fig. 3 A is the stereogram of the embodiment of the present invention 1 back-up block;
Fig. 3 B is the stereogram at the embodiment of the present invention 1 another visual angle of back-up block;
Fig. 4 is the side view of the embodiment of the present invention 2;
Fig. 5 is the side view of the embodiment of the present invention 3;
Fig. 6 is the top view of the embodiment of the present invention 3;
Fig. 7 A is the top view of the embodiment of the present invention 3 ball cups;
Fig. 7 B is the upward view of the embodiment of the present invention 3 ball cups;
Fig. 7 C is that the L-L of Fig. 7 B is to cutaway view;
Fig. 8 is the side view of the embodiment of the present invention 4;
Fig. 9 is the side view of the embodiment of the present invention 5;
Figure 10 is the top view of the embodiment of the present invention 5;
Figure 11 A is the three-dimensional exploded view of the embodiment of the present invention 5 back-up blocks;
Figure 11 B is the three-dimensional exploded view at the embodiment of the present invention 5 another visual angles of back-up block;
Figure 12 is the side view of the embodiment of the present invention 6.
The specific embodiment
As shown in Figures 1 to 12, the present invention has disclosed a kind of folding camp chair, the back-up block that it comprises a seat bracket 1, a chair foot support 2 and is flexibly connected seat bracket 1 and chair foot support 2, on back-up block, establish respectively the jack for seat bracket 1 each rod member and 2 each foot levers plants of chair foot support, seat bracket 1 links together by elastic threads 4 and back-up block with each rod member of chair foot support 2, and is combined with seat support cloth cover 5 on seat bracket 1.
Described seat bracket 1 comprises two front support rods 11 and at least one back pole, and this embodiment arranges two back poles 12;
Described chair foot support 2 comprises at least three foot levers 21;
As shown in Fig. 1 to Fig. 3 B, embodiments of the invention 1, described back-up block is a columnar block 3, on it, ora terminalis forms oblique surface 31, under cylinder block, ora terminalis also forms lower oblique surface 32, at upper oblique surface 31 places, be the radial formation outside oblique jack 311 that makes progress and plant and coordinate for each rod member of seat bracket 1, at lower oblique surface 32 places, be radial formation and make progress that to take 5 holes in inside oblique jack 321(figure be example); The center of this columnar block 3 is an axis hole 33, and each oblique jack 311,321 therewith axis hole 33 connects, and with this, facilitates stretching of elastic threads 4 to put with fixing.
During combination, in the foot lever 21 of two front support rods 11, two back poles 12 and the chair foot support 2 of seat bracket 1, wear respectively elastic threads 4, and in the oblique jack 311,321 that coordinates through each rod member again of each elastic threads 4 to link together with back-up block 3.
When chair uses, only seat bracket 1 and each rod member of chair foot support 2 need be inserted in the oblique jack 321,322 of columnar block 3, otherwise the folding chair period of the day from 11 p.m. to 1 a.m, only seat bracket 1 and each rod member of chair foot support 2 need be extracted from the oblique jack 321,322 of columnar block 3, owing to being limited to the effect of elastic threads 4, making each parts be unlikely to depart from, and can realize the compactest folding, reach minimum folding volume, to facilitate collection and to carry.
Again as shown in Figure 4, embodiments of the invention 2, adopt the back-up block of columnar block 3, front support rod 11 and the back pole 12 of seat bracket 1 wherein can consist of more piece rod member, be that the end of each rod member can form necking down and is beneficial to socket each other, length after so can further shortening rod member and folding, order more reasonable fold.During use, the binding force of pine oil to each rod member, shakes each rod member, under the resilient force of epistasis rope 4, chair frame easily can be launched.
The above-mentioned front support rod consisting of more piece rod member 11 is or/and back pole 12 also can be realized and being coordinated by connecting rod 13, and one end of each connecting rod 13 is fixed in a rod member, and the other end and adjacent rod member are pivot bush unit relation.
Certainly, each foot lever 21 of chair foot support 2 also can adopt more piece rod member to form.
For improving the support degree of chair foot rest 2, its foot lever 21 also can arrange four or five, only the oblique jack 321 of back-up block 3 need be set to corresponding with foot lever 21 quantity.
As shown in Fig. 5 to Fig. 7 C, embodiments of the invention 3, back-up block is wherein a ball cup 6, the below of this ball cup 6 is provided with an end face 61, in abutting connection with the top of this end face 61 and therewith interval offers foot lever jack 62 uniformly on the parallel contour of end face 61, and this embodiment arranges three foot lever jacks 62; An another bar jack 63 that is provided with on the episphere of ball cup 6 opposing end surfaces 61; The axis of above-mentioned each jack 62,53 is to extend to the centre of sphere from sphere; Separately at end face 61 center, also to the centre of sphere, extend a counterbore 54 to connect each jack, so facilitate stretching of elastic threads 4 to put with fixing.
During combination, in the foot lever 21 of two front support rods 11 of seat bracket 1, two back pole 12 chair foot supports 2, wear respectively elastic threads 4, and in the jack 63,52 that coordinates through each rod member again of each elastic threads 4 to link together with ball cup 6.
When chair uses, only seat bracket 1 and each rod member of chair foot support 2 need be inserted in a bar jack 63 and foot lever jack 62 of ball cup 6, otherwise the folding chair period of the day from 11 p.m. to 1 a.m, only seat bracket 1 and each rod member of chair foot support 2 need be extracted from propping up bar jack 63 and foot lever jack 62 of ball cup 6, owing to being limited to the effect of elastic threads 4, making each parts be unlikely to depart from, and can realize the compactest folding, reach minimum folding volume, to facilitate collection and to carry.
As shown in Figure 8, embodiments of the invention 4, adopt the back-up block of ball cup 6, wherein the front support rod 11 of seat bracket 1 can consist of more piece rod member with back pole 12, be that the end of each rod member can form necking down and is beneficial to socket each other, length after so can further shortening rod member and folding, order more reasonable fold.During use, the binding force of pine oil to each rod member, shakes each rod member, under the resilient force of epistasis rope 4, chair frame easily can be launched.
As shown in Fig. 9 to Figure 11 B, embodiments of the invention 5, back-up block 7 wherein comprises the articulated part 73 of upper bracket 71, undersetting 72 and pivot joint upper bracket 71 and undersetting 72; The periphery of the nearly top of this upper bracket 71 is the downward inside oblique jack 711 of radial formation and plants and coordinate for each rod member of seat bracket 1; In this upper bracket 71, be formed centrally axial pivoted hole 712; The periphery of the nearly below of this undersetting 72 is the radial formation inside oblique jack 721 that makes progress, and is formed centrally axial pivoted hole 722 in undersetting 72; Articulated part 73 passes the pivoted hole 712 of upper bracket 71, the pivoted hole 722 of undersetting 72, so that upper bracket 71 and undersetting 72 are articulated, so makes the rotation relation of formation activity between upper bracket 71 and undersetting 72.
This articulated part 73 can be molded directly within on upper bracket 71 or undersetting 72, coordinate the embodiment shown in Fig. 9 to Figure 11 B, this articulated part 73 is to be molded directly within on upper bracket 71, on it, form necking down step 731, the pivoted hole 722 of undersetting 72 forms stepped hole, after so structure makes upper bracket 71 coordinate with undersetting 72, the composition surface of rotation is still less more in the mutual rotation between the two.
During combination, in the foot lever 21 of two front support rods 11, two back poles 12 and the chair foot support 2 of seat bracket 1, wear respectively elastic threads 4, and in the oblique jack 711,721 that coordinates through each rod member again of each elastic threads 4 to link together with back-up block 7.
When chair uses, only seat bracket 1 and each rod member of chair foot support 2 need be inserted in back-up block 3, because the upper bracket 71 of back-up block 7 and undersetting 72 are mutual pivot joint relation, therefore seat support can be realized flexibly and rotating, to facilitate user's Multi-angle working, make the function of folding seat more enrich powerful.
And when the folding chair period of the day from 11 p.m. to 1 a.m, only seat bracket 1 and each rod member of chair foot support 2 need be extracted from back-up block 3, owing to being limited to the effect of elastic threads 4, make each parts be unlikely to depart from, and can realize the compactest folding, reach minimum folding volume, to facilitate collection and to carry.
As shown in figure 12, embodiments of the invention 6, front support rod 11 and the back pole 12 of described seat bracket 1 can consist of more piece rod member, and the end of each rod member can form necking down and be beneficial to socket each other, length after so can further shortening rod member and folding, order more reasonable fold.During use, the binding force of pine oil to each rod member, shakes each rod member, under the resilient force of epistasis rope 4, chair frame easily can be launched.
In sum, the back-up block of the present invention by having a jack is to coordinate each rod member of seat bracket and chair foot support can form a folding seat, and can realize folding of each rod member of folding seat and back-up block by the connection of elastic threads, reach that to fold volume compacter, simple in structure, light, more portable and the function of collection.
In addition, this back-up block can consist of mutual pivot joint upper bracket and undersetting, so can make seat support realize flexible rotating, reaches the special efficacy that facilitates user's multi-angle to use flexibly.