CN2827139Y

CN2827139Y - Folding and telescopic chair

Info

Publication number: CN2827139Y
Application number: CN 200520043926
Authority: CN
Inventors: 张新安; 张炎华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-29
Filing date: 2005-07-29
Publication date: 2006-10-18
Anticipated expiration: 2015-07-29

Abstract

The utility model discloses a folding telescopic chair, which comprises a backrest, a seat cushion, lifting legs and a supporting seat, wherein a telescopic chair also comprises a folding assembly. The seat cushion is connected with the lifting leg through the folding assembly; the folding assembly comprises an upper support body and a lower support body; the upper support body comprises a cylinder part, the first end face of the cylinder part is provided with a first hole, a second end face and a center line form a certain inclination angle, a second hole is arranged in the second end face, a slot is arranged at the circumference face between the two end faces of the cylinder part, the bottom surface of the slot is parallel to a center axis, both sides of the circumference face of the slot are respectively provided with a first support frame and a second support frame which are perpendicular to the bottom face of the slot, and the seat cushion is fastened on the first support frame and the second support frame. The lower support body comprises a cylinder part, the upper end face of the cylinder part and a center line form a certain inclination angle, the angle of the inclination angle is accorded with that of the end face of the upper support body, and a third hole, a forth hole and a fifth hole are arranged on the end face. The folding assembly comprises a drawing rod, the drawing rod can be inserted into the forth hole and the fifth hole in a selection way, the folding assembly also comprises a pin shaft, and the pin shaft is inserted and fastened in the third hole of the lower support body and the second hole of the upper support body.

Description

A kind of folding retractable chair

Technical field

The utility model relates to a kind of flexible chair, the flexible chair that especially a kind of backrest, cushion all can fold.

Background technology

The tables and chairs that use in the confined space need be saved the tables and chairs in space as places such as ships and light boats, fast food restaurant and recreations, open when the someone uses, and unmannedly use or can fold up again when needing place cleaning.The folding mode that is adopted all is that folding (folding and unfolding) of the support foot by tables and chairs finished in the market, and this tables and chairs can fold, and also be convenient to move, but can't fix, and inconvenient majority needs the occasion of fixed fold.

Summary of the invention

At the problems referred to above, the utility model provides a kind of folding retractable chair, can realize the folding of cushion and backrest, and the lifting of chair height.

In order to realize the foregoing invention purpose, the technical solution adopted in the utility model is, the utility model discloses a kind of folding retractable chair, comprise: backrest, cushion, lifting foot and supporting base, wherein flexible chair further comprises: Foldable assembly, cushion is connected with lifting foot by Foldable assembly, Foldable assembly comprises support body and following support body, last support body comprises a cylinder part, first end face at cylinder part is established first hole, second end face and center line are certain inclination angle, establish second hole on second end face, offer a groove on the periphery between the both ends of the surface of cylinder part, the bottom surface of groove parallels with central shaft, the periphery both sides of groove are respectively equipped with one perpendicular to first of groove bottom, two supports, cushion is fastened on first, on two supports; Following support body comprises a cylinder part, is certain inclination angle at the upper surface and the center line of cylinder part, and the inclination angle size is consistent with the inclination angle of the end face of last support body, on this end face, establish third and fourth, five holes; Foldable assembly further comprises pull bar, and the pull bar alternative is plugged in fourth, fifth hole; Foldable assembly also comprises a bearing pin, plugs and is fastened on down in second hole of the 3rd hole of support body and last support body.

Description of drawings

Below, with reference to accompanying drawing, for those skilled in the art that, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.

Fig. 1 is a folded state schematic diagram of the present utility model;

Fig. 2 is the utility model deployed condition schematic diagram;

Fig. 3 is the partial structurtes exploded view of the utility model cushion foldable structure;

Fig. 4 is the assembled sectional view of Fig. 3;

Fig. 5 is the partial exploded view of the utility model backrest;

Fig. 6 is folding preceding backrest structure figure;

Fig. 7 is the backrest structure figure after folding;

Fig. 8 is the cutaway view of the utility model lifting foot;

Fig. 9 is the decomposing schematic representation of Fig. 8;

Figure 10 is the schematic diagram of the utility model supporting base.

The specific embodiment

Please in conjunction with the accompanying drawings shown in 1,2, folding retractable chair of the present utility model mainly comprises backrest 1, cushion 2, lifting foot 3 and supporting base 4 several sections, it is folding that wherein backrest 1 can be pressed close to cushion 2, backrest 1 and cushion 2 can be folding perpendicular to ground to the direction of lifting foot 3 in the lump, in addition, the user can also regulate the height of lifting foot 3 according to desired height.

Below introduce the concrete structure of three parts respectively.Fig. 3 has provided the decomposing schematic representation of cushion 2 foldable structures, this Foldable assembly comprises support body 21 and following support body 22, last support body 21 comprises a cylinder part 211, these cylinder part 211 1 end faces 212 are established a hole 213, other end 214 is certain inclination angle with center line, be generally 45 °, also be provided with a hole 2141 on this end face 214.On the periphery between the both ends of the surface of cylinder part 211, offer a groove 215, the bottom surface of this groove 215 parallels with central shaft, the periphery both sides of groove 215 are respectively equipped with a support 216,217 perpendicular to groove 215 bottom surfaces, offer the position, hole that fixes with cushion 2 on the support.This Foldable assembly also comprises support body 22, following support body 22 comprises a cylinder part 221, is certain inclination angle at the upper surface 222 and the center line of cylinder part 221, and this inclination angle size is consistent with the inclination angle of the end face 214 of last support body 21, also often be 45 °, on this end face, establish three holes 223～225.During installation, cooperate a pull bar 23, this pull bar 23 comprises that one inserts an axial region 231 and a handle portion 232, the two forms a T-shaped, an end of inserting axial region 231 inserts the hole 225 in hole 213 and the following support body 22 on the end face 212 of support body 21 successively, and a sheathed thereon spring 24, its end is fixing with pin 25.The diameter of pin 25 is greater than hole 213, and in addition, the hole 223 of support body 22 and the hole 2141 of last support body 21 were fastening with a nut 27 under a bearing pin 26 passed through in addition.

Fig. 3 after combination is finished as shown in Figure 4, wherein, when needs fold cushion 2, outwards spur pull bar 23, support body 21 is rotated around bearing pin 26, make pull bar 23 turn to 224 corresponding positions, hole with following support body 22, releasing lever 23 then, and the slotting axial region 231 of pull bar 23 is fastened in this hole 224, because pull bar 21 and last support body 21 have rotated counterclockwise about 90 °, the cushion 2 that is fixed on the support body 21 has also rotated counterclockwise about 90 °, thereby has realized the folding of cushion 2.

Fig. 5 provides the decomposing schematic representation of the utility model backrest 1.Comprising backrest body 11, backrest hinge seat 12 and rotating shaft 13 and backrest seat 14, rotating shaft 15, backrest seat support 16 and spacer pin 17.With two screws backrest body 11 and backrest hinge seat 12 are fixed.Backrest seat 14 comprises the support body 141 of drawing money on credit, a hole 142 is established in the draw money on credit upper end of support body 141, rotating shaft 13 is located in the hole 142 on backrest hinge seat 12 and the backrest seat 14 successively, can realize like this and backrest hinge seat 12 that backrest 11 is connected as a single entity and backrest seat 14 between 13 rotate around the shaft.In addition, in the Y-shaped structure in the lower end of backrest seat 14, two extensions 143 that Y shape end forms, all respectively offer a hole 145 on 144,146, the backrest seat support 16 of backrest seat 14 lower ends is by one rectangular connecting portion 161, offering some holes on this connecting portion 161 is connected with cushion 2, connecting portion 161 links to each other with a carrier base 162, this carrier base 162 is perpendicular to connecting portion 161, offer on this carrier base 162, following

hole

1621,1622, rotating shaft 15 wears the hole 146 of backrest seat 14 and the hole 145 of hole 1621 on the carrier base 162 and backrest seat 14, extension 143 successively, 17 of the spacer pins that 144 lower end is located in carrier base 162 holes 1622 are spacing.

Fig. 6,7 provides the backrest structure schematic diagram of folding front and back.

Fig. 8 provides the decomposing schematic representation of lifting foot, forms the cylinder 31 that seals comprising two up-small and down-big cylinders 311,312, is formed the switch of a cylinder 31 by a ball float 313 moving up and down at the top of last cylinder 311.Whole cylinder 312 down is set in the supporting base 4.

Be provided with a nut 32, anti-rotation sliding sleeve 33 in the junction of upper and lower cylinder 311,312, this nut 32 is the structure of band external tooth, anti-rotation sliding sleeve 33 comprises annulus cover 331 and overlaps 331 spacing holes that are connected as one 332 with annulus, the inner cylinder face of the annulus cover 331 of this anti-rotation sliding sleeve 33 is meshed with the external tooth of nut 32, offers screw 333 perpendicular to centerline direction on the annulus of anti-rotation sliding sleeve 33 cover 331 in addition.Above the anti-rotation sliding sleeve 33, center on cylinder 311 and also have a dirt-proof boot 35, the top of dirt-proof boot 35 is provided with support body 34, this time support body 34 comprises a hollow circuit cylinder body 341, the side face of cylinder part 341 is offered a hole 342, a protuberance 343 is extended perpendicular to center line in cylinder part 341 lower ends, the upper end of one anti-bull stick 344 is fixed in the protuberance 343, and insert in the spacing hole 332 of anti-rotation sliding sleeve 33 lower end.One control lever 37 is connected with anti-rotation sliding sleeve 33 by a hinge seat 36 that is arranged on anti-rotation sliding sleeve 33 mesopores 342, for handling control lever 37 upper and lower moving, also is located in the hinge seat 36 by a pin 38 in addition.

Fig. 9 provides the annexation of anti-rotation sliding sleeve 33 and nut 32, as can be seen, by the screw-in of a cone screw 40, meshes between the external tooth of the nut 32 of feasible band external tooth and the tapered end of cone screw 40, realizes the locking of anti-rotation thus.

Figure 10 provides the assembled state of Fig. 8,9 structures.When the user sits the backfin folding chair downwards, last cylinder 311 compressions of cylinder 31 downwards, this moment, the height of folding seat descended, when the user need raise this chair, pulling control lever 37, ball float 313 with cylinder 31 upper ends presses down thus, the switch open of cylinder 31, the atmospheric pressure that is higher than in the cylinder 31 enters in this cylinder 31, and cylinder 311 is risen, thereby raise folding seat, when reaching desired height, unclamp control lever 37, at this moment, mesh between the external tooth of the nut of band external tooth and the tapered end of cone screw, thereby play the effect that prevents that folding seat from rotating.

More than all embodiment only for the explanation the utility model usefulness, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technical schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.

Claims

1, a kind of folding retractable chair comprises: backrest (1), cushion (2), lifting foot (3) and supporting base (4) is characterized in that described flexible chair further comprises:

Foldable assembly, described cushion (1) is connected with described lifting foot (3) by described Foldable assembly, described Foldable assembly comprises support body (21) and following support body (22), the described support body (21) of going up comprises a cylinder part (211), first end face (212) at described cylinder part (211) is established first hole (213), second end face (214) is certain inclination angle with center line, establish second hole (2141) on described second end face (214), on the periphery between the both ends of the surface of described cylinder part (211), offer a groove (215), the bottom surface of described groove (215) parallels with central shaft, the periphery both sides of described groove (215) are respectively equipped with one perpendicular to first of described groove (215) bottom surface, two supports (216,217), described cushion (2) is fastened on described first, on two supports; Described support body (22) down comprises a cylinder part (221), upper surface (222) in cylinder part (221) is certain inclination angle with center line, described inclination angle size is consistent with the inclination angle of the end face (214) of last support body (21), on this end face, establish third and fourth, five holes (223～225);

Described Foldable assembly further comprises pull bar (23), and described pull bar (23) alternative is plugged in described fourth, fifth hole (224,225);

Described Foldable assembly also comprises a bearing pin (26), plugs and is fastened in second hole (2141) of the 3rd hole (223) of described down support body (22) and last support body (21).

2, folding retractable chair according to claim 1 is characterized in that, described backrest (1) further comprises backrest body (11), backrest hinge seat (12) and backrest seat (14), wherein:

Described backrest seat (14) comprises the support body of drawing money on credit (141) of the Y-shaped structure in a lower end, all respectively offer a hole (145 on two extensions that the Y shape end of the described support body of drawing money on credit (141) forms, 146), the backrest seat support (16) of described backrest seat (14) lower end is by one rectangular connecting portion (161), offering some holes on the described connecting portion (161) is connected with cushion (2), connecting portion (161) links to each other with a carrier base (162), this carrier base (162) is perpendicular to connecting portion (161), this carrier base is offered on (162), following hole (1621,1622), in the described following hole (1622) spacer pin (17) is set;

Described backrest body (11) is fastened on the upper end of the support body of drawing money on credit (141) of backrest seat (14) by backrest hinge seat (12).

3, folding retractable chair according to claim 1 and 2 is characterized in that,

Second end face (214) of described cylinder part (211) is 45 ° with the inclination angle of center line, and the upper surface (222) of described cylinder part (221) is 45 ° with the inclination angle of center line.

4, folding retractable chair according to claim 3 is characterized in that,

Be provided with a nut (32), anti-rotation sliding sleeve (33) at described lifting foot (3) and supporting base (4) position, described nut (32) has external tooth, described anti-rotation sliding sleeve (33) comprises an annulus cover (331) and the spacing hole (332) that is connected as one with annulus cover (331), and the inner cylinder face of the annulus cover (331) of this anti-rotation sliding sleeve (33) is gone up perpendicular to the screw (333) of centerline direction by the annulus cover (331) of anti-rotation sliding sleeve (33) with nut (32) and realized that external tooth is meshed;

Described lifting foot (3) comprises that also a cone screw (40) is plugged in the described screw (333), meshes between the external tooth of the nut 32 of feasible band external tooth and the tapered end of cone screw 40.

5, folding retractable chair according to claim 4 is characterized in that,

The lifting foot of described flexible chair further comprises liftable cylinder in (3), described cylinder comprises two up-small and down-big cylinders (311,312), and the switch of described cylinder (31) is formed by a ball float moving up and down (313) on the top of cylinder (311) on described.

6, folding retractable chair according to claim 5 is characterized in that,

Described lifting foot (3) also comprises a control lever (37), and described control lever (37) is connected with anti-rotation sliding sleeve (33), and the control end of described control lever (37) is arranged on described ball float (313) top.