CN201899154U

CN201899154U - Chair

Info

Publication number: CN201899154U
Application number: CN2010206129418U
Authority: CN
Inventors: 梁庆琨
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-18
Filing date: 2010-11-18
Publication date: 2011-07-20
Anticipated expiration: 2020-11-18

Abstract

The utility model relates to a chair comprising a seat cushion and a chair back, wherein the chair back is provided with an upright column and a backrest board; the backrest board is movably connected with the upright column; a supporting rod which is formed by articulating an upper supporting rod with a lower supporting rod is movably connected with the backrest board; a lower rotating shaft is provided with a torsion spring acting between the backrest board and the upper supporting rod or acting between the backrest board and a machine part which is fixedly connected with the upper supporting rod; a limiting block is arranged at the position where the lower supporting rod is articulated with the upper supporting rod; when the upper supporting rod and the lower supporting rod open, the opening angle is alpha which is greater than 180 degrees and smaller than 270 degrees. Compared with the prior art, not only can the height of the chair be changed, but also the chair is fast and convenient in operation, and is safe and reliable in locking.

Description

Chair

Technical field

The utility model relates to a kind of chair.

Background technology

Current chairs, the cushion and the chair back have been generally comprised, the described chair back has two columns that are positioned at both sides, cushion rear, between two root posts, backboard is housed, such chair, the height of cushion is fixed, function singleness, if want to sit highly or take chair pad pin to get the thing of eminence, all get and take stool to ride on the chair in addition just to reach the height of wanting, bother and dangerous; For this reason, the applicant had had once researched and developed a kind of Granted publication and number had been the chair that can regulate the seat cushions height of CN201564025U, the chair back of this chair has two columns that are positioned at both sides, cushion rear, between two root posts, backboard is housed, these both sides, backboard top flexibly connect by last rotating shaft and column, these both sides, backboard bottom flexibly connect by lower rotary shaft and support bar, support bar flexibly connects by rotating shaft and described column, support bar is hinged by upper support bar and lower support bar, realizes that by opening with doubling of upper support bar and lower support bar lifting of backboard forms cushion and put down the purpose that forms backrest like this; But, when last lower support bar opens, lock by dead bolt and bayonet socket, operate cumbersome.

Summary of the invention

The utility model provides a kind of chair, and it can not only solve, and current chairs cushion height is fixed, the problem of function singleness, and swift to operate, convenient.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: it includes the cushion and the chair back, this chair back has two columns that are positioned at both sides, cushion rear, between two root posts, backboard is housed, these both sides, backboard top flexibly connect by last rotating shaft and described column, these both sides, backboard bottom flexibly connect by lower rotary shaft and support bar, described support bar flexibly connects by rotating shaft and described column, described support bar is hinged by hinge by upper support bar and lower support bar, be equipped with on the described lower rotary shaft and act between described backboard and the described upper support bar or act on described backboard and be fixedly connected on torque spring between the parts of described upper support bar, hinge point at described lower support bar and described upper support bar is provided with limited block, angle when described upper support bar and described lower support bar open is α, 180 °＜α＜270 °.

In the technique scheme, described backboard bottom can also be provided with two latches that stretch out to both sides, can be respectively equipped with location-plate on described two root posts, can be provided with the adjustment hole that makes described latch location on this location-plate, the afterbody of described two latches can be respectively equipped with the latch handle, can be provided with coil tension spring on this latch handle; Can be fixed with handle on the described lower rotary shaft, described torque spring has the section of stretching out to be pressed on the described handle, and another section of stretching out is pressed under the described backboard, described lower rotary shaft and the riveted joint of described upper support bar.

Because adopt technique scheme, the utility model compared with prior art has following beneficial effect:

1, owing on the lower rotary shaft torque spring is housed, as long as upwards upset of backboard, when last lower support bar will be stretching after crossing dead point (going up that point that lower support bar forms straight line) under the effect of torque spring, last lower support bar forms the α angle greater than 180 °, upper support bar withstands on the limited block of lower support bar then, and locking is finished, and is very convenient, quick, and locked secure, can not cause maloperation.

2, because the backboard bottom also is provided with two latches that stretch out to both sides, and the locating piece of column is provided with the adjustment hole of diverse location, when backboard put down, latch can be inserted in the different adjustment holes according to the angle of backboard needs, satisfies different needs.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the structural representation that the utility model backrest is turned into cushion.

Fig. 4 is the enlarged drawing at A place.

The specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawing example:

As depicted in figs. 1 and 2, it includes the cushion 2 and the chair back 1 the utility model, the chair back 1 has two columns 1.1 that are positioned at both sides, cushion rear, 1.2, backboard 3 is housed between two root posts, backboard 3 one sides are by last rotating shaft 4 and left and right pillar 1.1,1.2 flexibly connect, opposite side flexibly connects by lower rotary shaft 5 and support bar 6, support bar 6 flexibly connects by rotating shaft 7 and left and right pillar 1.1 and 1.2, support bar 6 is hinged by hinge by upper support bar 6.1 and lower support bar 6.2, be equipped with on the lower rotary shaft 5 and act on backboard 3 and be fixedly connected on torque spring 12 between the handle 13 on the lower rotary shaft 5, torque spring 12 has the section of stretching out to be pressed on the handle 13, another section of stretching out is pressed in backboard 3 times, lower rotary shaft 5 and upper support bar 6.1 riveted joints; Hinge point at lower support bar 6.2 and upper support bar 6.1 is provided with limited block 6.4, and the angle when upper support bar 6.1 opens with lower support bar 6.2 is α, and α equals 195 °, and upper support bar 6.1 withstands on the limited block 6.4 of lower support bar 6.2, finishes locking; Backboard 3 bottoms also are provided with two latches 9 that stretch out to both sides, be respectively equipped with location-plate 8 on the column 1.1,1.2, the afterbody that has 8.1, two latches of adjustment hole that make latch 9 location on this location-plate is respectively equipped with latch handle 10, and this latch handle is provided with coil tension spring 11.

As shown in Figure 3 and Figure 4, when wanting eminence to get thing or facing toward high desk, two latch handles 10 of backboard 3 bottoms are drawn to the centre, latch can withdraw from from adjustment hole, backboard 3 is along upwards upset of rotating shaft 4, when upper support bar 6.1 and lower support bar 6.2 will be stretching after crossing that point that dead point upper support bar and lower support bar form straight line under the effect of torque spring 12 rapidly, the open angle of upper support bar and lower support bar is 195 °, upper support bar 6.1 withstands on the limited block 6.4 of lower support bar 6.2, finish locking, this moment backboard 3 seats that become parallel to the ground, above getting the article of eminence above can stepping down in or being sitting in, operate very convenient fast, and it is big more to become the pressure at right angle of the backboard 3 behind the seat, press tightly more between upper support bar 6.1 and the limited block, safe more; In the time will putting down backboard, only need move handle 13 gently, last lower support bar can turn back, and spurs the latch handle again, and latch can enter in the adjustment hole, and backboard locks.Latch is inserted in the adjustment hole of diverse location, backboard promptly may be locked on the different positions.

Claims

1. chair, it includes the cushion and the chair back, this chair back has two columns that are positioned at both sides, cushion rear, between two root posts, backboard is housed, these both sides, backboard top flexibly connect by last rotating shaft and described column, these both sides, backboard bottom flexibly connect by lower rotary shaft and support bar, described support bar flexibly connects by rotating shaft and described column, described support bar is hinged by hinge by upper support bar and lower support bar, it is characterized in that: be equipped with on the described lower rotary shaft and act between described backboard and the described upper support bar or act on described backboard and be fixedly connected on torque spring between the parts of described upper support bar, hinge point at described lower support bar and described upper support bar is provided with limited block, angle when described upper support bar and described lower support bar open is α, 180 °＜α＜270 °.

2. chair according to claim 1, it is characterized in that: described backboard bottom also is provided with two latches that stretch out to both sides, be respectively equipped with location-plate on described two root posts, this location-plate is provided with the adjustment hole that makes described latch location, the afterbody of described two latches is respectively equipped with the latch handle, and this latch handle is provided with coil tension spring.

3. chair according to claim 1 and 2 is characterized in that: be fixed with handle on the described lower rotary shaft, described torque spring has the section of stretching out to be pressed on the described handle, and another section of stretching out is pressed under the described backboard, described lower rotary shaft and the riveted joint of described upper support bar.