CN105725564A - Retractable foldable type footrest device of office chair - Google Patents

Abstract

The invention discloses a retractable foldable type footrest device of an office chair. An existing office chair with a footrest device is difficult to operate. A slide pair is composed of two slide blocks and two linear guide rails fixed at the bottom of a seat plate of the office chair; the first slide block and the second slide block are connected with the seat plate of the office chair through compression springs; the inner sides of the first slide block and the second slide block are connected by a connection rod; one end of a first rod piece and one end of a second rod piece are symmetrically and fixedly connected onto the connection rod; one end of a rotary shaft is arranged in a through hole of the first rod piece and the other end of the rotary shaft is arranged in a through hole of the second rod piece; a plurality of second blind holes are formed in two end faces of the rotary shaft; a U-shaped rod is fixedly connected onto the rotary shaft; a torsion spring sleeves the rotary shaft and is connected with the U-shaped rod and the first rod piece; two first blind holes of the first rod piece and the second rod piece are matched with two long pin shafts corresponding to one round end cover; and two short pin shafts of the round end cover are matched with the two second blind holes on the corresponding end face of the rotary shaft. According to the retractable foldable type footrest device of the office chair, an office chair state can be converted into a footrest state and the operation is convenient.

Description

Office chair stretches fold-playing foot rest device

Technical field

The invention belongs to novel office table separation, be specifically related to the flexible fold-playing foot rest device of a kind of office chair.

Background technology

The effect of current office chair is only used for the office that is seated, and at noon during respite after meal, user often separately adds a stool and carrys out leg rest, better to loosen rest, but separately adds stool inconvenience.Also the indivedual office chair with foot rest device of appearance, but troublesome poeration.

Summary of the invention

It is an object of the invention to for the deficiencies in the prior art, it is provided that a kind of easy to operate, position the flexible fold-playing foot rest device of reliable office chair.

The present invention includes office chair seat, the first line slideway, the first compression spring, the first slide block, the second line slideway, the second compression spring, the second slide block, connecting rod, the first rod member, the second rod member, rotating shaft, circular end cap, short pin shaft, long pin shaft, U-shaped bar, torsion spring and magnetic sheet；The first described line slideway and the second line slideway symmetry are fixed on bottom office chair seat；The first described slide block and the first line slideway constitute sliding pair, and the first compression spring connects the first slide block and office chair seat；First holding screw is screwed into the first slide block by the outside of the first slide block, for first slide block location on the first line slideway；The second described slide block and the second line slideway constitute sliding pair, and the second compression spring connects the second slide block and office chair seat；Second holding screw is screwed into the second slide block by the outside of the second slide block, for second slide block location on the second line slideway；The inner side connecting rod of described first slide block and the second slide block connects；One end symmetry of the first rod member and the second rod member is fixedly arranged in connecting rod, and the other end has all processed through hole and two the first blind holes；One end of described rotating shaft is contained in the through hole of the first rod member, and the other end is contained in the through hole of the second rod member；The both ends of the surface of rotating shaft are concordant with the outer face of the first rod member and the second rod member respectively；Two end faces of rotating shaft are all processed multiple second blind holes being uniformly distributed along the circumference；Described U-shaped bar is fixedly arranged in rotating shaft；Described torsion spring set is in rotating shaft, and one end connects U-shaped bar, and the other end connects the first rod member.

Described circular end cap inner face is fixed with two short pin shafts and two long pin shaft linearly arranged and the center of rotation that the centrage line of two short pin shafts and two long pin shaft is by rotating shaft；Two the first blind holes of the first rod member coordinate with two long pin shaft of a circular end cap, and two the first blind holes of the second rod member coordinate with two long pin shaft of another circular end cap；Two the second blind holes of two short pin shafts end face corresponding to rotating shaft of circular end cap coordinate；Center of rotation place inside circular end cap is fixed with one piece of magnetic sheet.

The invention have the benefit that

The present invention meets office and the requirement of respite, from the folding office chair state transfer of indentation to the leg rest state stretching out expansion, easy to operate；The stepless changing protruded horizontally up and the multistage adjustment of angle, meet the individual requirement of different user.

Accompanying drawing explanation

Fig. 1 is present invention schematic diagram of mechanism when being folded in bottom office chair；

Fig. 2 is present invention schematic side view under leg rest state；

Fig. 3 is the bottom view of Fig. 2；

Fig. 4 is the sectional arrangement drawing of shaft of the present invention and circular end cap；

Fig. 5 is the A-A sectional view of Fig. 4.

Detailed description of the invention

Below in conjunction with accompanying drawing, the invention will be further described.

As shown in Fig. 1,2,3 and 5, office chair stretches fold-playing foot rest device, compresses spring the 3, first slide block the 4, second line slideway 2 ＇, the second compression spring 3 ＇, the second slide block 4 ＇, connecting rod the 6, first rod member the 7, second rod member 7 ＇, rotating shaft 10, circular end cap 12, short pin shaft 13, long pin shaft 14, U-shaped bar 15, torsion spring 16 and magnetic sheet 17 including office chair seat the 1, first line slideway 2, first.First line slideway 2 and the second line slideway 2 ＇ symmetry are fixed on bottom office chair seat 1；First slide block 4 and the first line slideway 2 constitute sliding pair, and the first compression spring 3 connects the first slide block 4 and office chair seat 1；First holding screw 5 is screwed into the first slide block 4 by the outside of the first slide block 4, for first slide block 4 location on the first line slideway 2.Second slide block 4 ＇ and the second line slideway 2 ＇ constitutes sliding pair, and the second compression spring 3 ＇ connects the second slide block 4 ＇ and office chair seat 1；Second holding screw 5 ＇ is screwed into the second slide block 4 ＇ by the outside of the second slide block 4 ＇, for second slide block 4 ＇ location on the second line slideway 2 ＇；The inner side connecting rod 6 of the first slide block 4 and the second slide block 4 ＇ connects；One end symmetry of the first rod member 7 and the second rod member 7 ＇ is fixedly arranged in connecting rod 6, and the other end has all processed through hole 8 and two the first blind holes 9；One end of rotating shaft 10 is contained in the through hole 8 of the first rod member 7, and the other end is contained in the through hole of the second rod member 7 ＇；The both ends of the surface of rotating shaft 10 are concordant with the outer face of the first rod member 7 and the second rod member 7 ＇ respectively；Two end faces of rotating shaft 10 are all processed eight the second blind holes 11 being uniformly distributed along the circumference.

As shown in Figures 4 and 5, circular end cap 12 inner face is fixed with two short pin shafts 13 and two long pin shaft 14 linearly arranged and the center of rotation that the centrage line of two short pin shafts 13 and two long pin shaft 14 is by rotating shaft 10；Two the first blind holes 9 of the first rod member 7 coordinate with two long pin shaft 14 of a circular end cap 12, and two first blind holes 9 of the second rod member 7 ＇ coordinate with two long pin shaft 14 of another circular end cap 12；Two the second blind holes 11 of two short pin shafts 13 end face corresponding to rotating shaft 10 of circular end cap 12 coordinate.Center of rotation place inside circular end cap 12 is fixed with one piece of magnetic sheet 17.

As shown in figs. 1 and 4, U-shaped bar 15 is fixedly arranged in rotating shaft 10；Torsion spring 16 is enclosed within rotating shaft 10, and one end connects U-shaped bar 15, and the other end connects the first rod member 7, provides the 10 resupinate power of axis around the shaft for U-shaped bar 15.

The operation principle of the flexible fold-playing foot rest device of this office chair:

The flexible fold-playing foot rest device indentation of this office chair is folded in the state bottom office chair as shown in Figure 1, user is sitting on office chair, left and right two handss unscrew the first holding screw 5 and the second holding screw 5 ＇ of both sides, under the first effect compressing spring 3 and the second compression spring 3 ＇, first slide block 4 and the second slide block 4 ＇ can drive and be contained in package unit thereon toward overhanging, at this moment user can control suitable extension with shank, feel comfortable the first holding screw 5 and the second holding screw 5 ＇ just tightening both sides, thus fixing the first slide block 4 and the second slide block 4 ＇, satisfying personalized demand.Next left and right two handss extract a bit of the second blind hole 11 making short pin shaft 13 leave rotating shaft 10 outward two circular end caps 12, and without departing from the first blind hole 9 of the first rod member 7 and the second rod member 7 ＇, at this moment under the effect of torsion spring 16, U-shaped bar 15 is flipped up, user controls suitable rotational angle with shank, feel comfortable and just decontrol circular end cap 12, under the effect of magnetic sheet 17, user slightly rotates U-shaped bar 15 with shank, short pin shaft 13 on circular end cap 12 will enter from its second nearest blind hole 11, thus just located the angle of rotation, complete outreach and the adjustment and the location that rotate up angle outward, enter the leg rest state stretching out expansion, as shown in Figures 2 and 3.

The office chair state that indentation is folding is returned from the leg rest state stretching out expansion, user first extracts a bit of the second blind hole 11 making short pin shaft 13 leave rotating shaft 10 two circular end caps 12, and without departing from the first blind hole 9 of the first rod member 7 and the second rod member 7 ＇, at this moment rotate U-shaped bar 15 by the power of shank 10 to downwardly turn over around the shaft, forward to and allow U-shaped bar 15 and the first rod member 7 fold coplanar, at this moment both hands are decontroled, under the effect of magnetic sheet 17, the short pin shaft 13 on circular end cap 12 will enter the second blind hole 11.Following user's both hands unscrew first holding screw 5 and second holding screw 5 ＇ of the right and left, rotating shaft 10 is shifted onto below office chair seat 1 after position, tighten the first holding screw 5 and the second holding screw 5 ＇, be at the office chair state that indentation is folding.

Claims (1)

1. the flexible fold-playing foot rest device of office chair, including office chair seat, the first line slideway, the first compression spring, the first slide block, the second line slideway, the second compression spring, the second slide block, connecting rod, the first rod member, the second rod member, rotating shaft, circular end cap, short pin shaft, long pin shaft, U-shaped bar, torsion spring and magnetic sheet, it is characterised in that: the first described line slideway and the second line slideway symmetry are fixed on bottom office chair seat；The first described slide block and the first line slideway constitute sliding pair, and the first compression spring connects the first slide block and office chair seat；First holding screw is screwed into the first slide block by the outside of the first slide block, for first slide block location on the first line slideway；The second described slide block and the second line slideway constitute sliding pair, and the second compression spring connects the second slide block and office chair seat；Second holding screw is screwed into the second slide block by the outside of the second slide block, for second slide block location on the second line slideway；The inner side connecting rod of described first slide block and the second slide block connects；One end symmetry of the first rod member and the second rod member is fixedly arranged in connecting rod, and the other end has all processed through hole and two the first blind holes；One end of described rotating shaft is contained in the through hole of the first rod member, and the other end is contained in the through hole of the second rod member；The both ends of the surface of rotating shaft are concordant with the outer face of the first rod member and the second rod member respectively；Two end faces of rotating shaft are all processed multiple second blind holes being uniformly distributed along the circumference；Described U-shaped bar is fixedly arranged in rotating shaft；Described torsion spring set is in rotating shaft, and one end connects U-shaped bar, and the other end connects the first rod member；

Described circular end cap inner face is fixed with two short pin shafts and two long pin shaft linearly arranged and the center of rotation that the centrage line of two short pin shafts and two long pin shaft is by rotating shaft；Two the first blind holes of the first rod member coordinate with two long pin shaft of a circular end cap, and two the first blind holes of the second rod member coordinate with two long pin shaft of another circular end cap；Two the second blind holes of two short pin shafts end face corresponding to rotating shaft of circular end cap coordinate；Center of rotation place inside circular end cap is fixed with one piece of magnetic sheet.