CN202027202U

CN202027202U - Divan with following gravity center

Info

Publication number: CN202027202U
Application number: CN2011200855001U
Authority: CN
Inventors: 周义玉; 张勇
Original assignee: HEFEI BAILANSI INTELLIGENT MACHINERY CO Ltd
Current assignee: HEFEI BAILANSI INTELLIGENT MACHINERY CO Ltd
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2011-11-09
Anticipated expiration: 2021-03-25

Abstract

The utility model belongs to the field of furniture, and particularly relates to a divan with the following gravity center, which comprises a back, a seat cushion and a rack consisting of two inverted-'U'-shaped stands. Chair armrests are arranged on the upper portion of the rack, chair legs are disposed on the lower portion of the rack, two swinging rods are symmetrically mounted on the inner side of the front end of the rack, lower ends of the swinging rods are hinged with two sides of the front end of the seat cushion, the front end of the seat cushion is hinged with a movable bed tail support or a movable bed tail plate, the rear end of the seat cushion is hinged with the back via a rotating shaft, contrary flexure steel frames are respectively mounted on two sides of the back, the middles of the contrary flexure steel frames are hinged with the rear sides of the chair armrests, the back of the movable bed tail support or the movable bed tail plate is provided with an inclined stay bar which is used for pushing the movable bed tail support or the movable bed tail plate to turn over upwards, and the rear end of the inclined stay bar, the bottom ends of the contrary flexure steel frames and the top end of an elastic telescopic rod hinged onto a rear cross rod are hinged together at a point via a pin shaft. The divan with the following gravity center adopts a gravity center following principle and gravity center following technology of a compound planar four-bar linkage mechanism and applies work via gravity of human body, and furthermore, a user can strike a balance so as to complete switching of the gravity center by exerting slight force.

Description

Center of gravity servo-actuated couch chair

[technical field]

The utility model belongs to field of furniture, more particularly, relates to a kind of center of gravity servo-actuated couch chair.

[background technology]

The present seat of office, the chair back and seat are one, can not relative motion, only offer the function of people's seat; Though some leisure chaise longue has half function that crouches, and when the people swings back, moves after the body's center of gravity, falls easily beyond the supporting surface, causes chair to turn over behind the people.Aircraft business class chair can provide and crouch or half function that crouches, for fear of after turn over the base of taking usually chair and be fixed on method (being equivalent to infinitely-great supporting surface) on the plate of cabin.This method obviously is not suitable for common office seats.Can only lie prone at office worker's noon of office or night and have a rest momently on desk, the rest of this posture is difficult to allow the people obtain real recovery.

[utility model content]

Technical problem to be solved in the utility model is to provide a kind of simple in structure, easy to use, can be present (chair), the random center of gravity servo-actuated couch chair that switches of (bed) two states that crouches, system's center of gravity is done self adaptation and is moved, guarantee to drop on all the time in the supporting surface, the high-quality that allows the government functionary can obtain the short time is had a rest.

The technical solution of the utility model is: center of gravity servo-actuated couch chair, comprise the chair back, cushion and fall the chair frame that " U " shape is configured to by two, described two are fallen " U " shape frame and be arranged in parallel and connect as one by forward and backward cross bar, and its top is armrest, and the bottom is a seat leg; The inboard symmetry of described chair frame front end is equipped with two forks, and described fork lower end and described cushion front end both sides are hinged; Described cushion front end and movable tailstock support or pulldown bed tailgate are hinged, and this cushion rear end is hinged by the rotating shaft and the described chair back; Described chair back both sides are equipped with the contrary flexure steelframe respectively, described contrary flexure steelframe middle part is hinged with described armrest rear side, the back side of described movable tailstock support or pulldown bed tailgate is equipped with one and is used to promote its resupinate hound, and cut with scissors in a bit altogether by bearing pin on described hound rear end and described contrary flexure steelframe bottom and an elastic telescopicing rod top that is articulated on the described rear transverse rod.

Further improvement as such scheme, described contrary flexure steelframe middle and lower part is provided with one " bow " shape hook, described hook middle part has through hole and uses bolting on described contrary flexure steelframe, and described armrest inboard and seat back leg are provided with and corresponding alignment pin or the cross bar of described hook.When the described chair back was holded up, described hook hooked alignment pin or the cross bar on the seat back leg, and the described chair back is fixed under the upright state; In the time of need putting down the chair back, untie hook, when treating that the chair back forwards horizontal level to, the other end with hook hangs on the alignment pin or cross bar of described armrest inboard again, the described chair back can be fixed under the level.

Principle of the present utility model is: the utility model has utilized plane four connecting rod principles, and " U " shape frame, fork, cushion and contrary flexure steelframe bottom are hinged and constitute the double rocking lever four-bar mechanism, and wherein fork and contrary flexure steelframe bottom constitute double rocking lever.Couch chair initial position is the upright sitting posture of backboard, and this moment, system's center of gravity was in two bearing-surfaces that " U " shape is configured to; When the user unclamps locking device and when toppling over backward, the chair back under the effect of user's body weight hypsokinesis until flattening, with the contrary flexure steelframe of chair back interlock around the pin joint forward swing because the characteristic of double rocking lever four-bar mechanism, stressed the moving with the chair back to the front upper place of cushion flushes; When the user sat up, fork is stressed to be put behind pin joint, and cushion is stressed to be moved to the back lower place, with the contrary flexure steelframe of chair back interlock also with after pendulum, the chair back recovers the sitting posture state.In this process, couch chair center of gravity moves forward and backward with cushion always, and center of gravity servo-actuated couch chair launches fully or when recovering sitting posture, couch chair center of gravity drops in the couch chair bearing-surface all the time, and couch chair whole machine balancing is kept, not the problem that couch chair centre-of gravity shift can take place and fall down.Elastic telescopicing rod has two effects, and the one, provide power-assisted when being launched into bed for described center of gravity servo-actuated couch chair, play the labour-saving effect, the 2nd, described double rocking lever four-bar mechanism is retrained, increase the stability of extreme position.

Advantage of the present utility model is: the center of gravity servo-actuated principle of having used lanar four rod mechanism, do work by human body gravity, a little firmly can disequilibrate and finish handoff procedure, system's center of gravity drops in the supporting surface all the time, the high-quality that makes the government functionary can obtain the short time is had a rest, slow down fatigue, help increasing work efficiency.

[description of drawings]

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the structural representation of the utility model under the seat state,

Fig. 2 is the state diagram of arc hook 4 among Fig. 1,

Fig. 3 is the structural representation of the present invention under the bed state,

Fig. 4 is the state diagram of arc hook 4 among Fig. 3.

Among the figure, 1, the chair back; 2, chair frame; 3, rear transverse rod; 4, arc hook; 5, contrary flexure steelframe;

6, hound; 7, expansion link; 8, tailstock support; 9 forks; 10, cushion; 11, alignment pin;

12, front rail.

[specific embodiment]

Further specify the utility model below by embodiment, and the utility model is not restricted to described embodiment, all similar with the utility model structure, and only be that size, position are adjusted or change person to some extent, then all belong to protection category of the present utility model.

Referring to Fig. 1,3, center of gravity servo-actuated couch chair comprises the chair back 1, cushion 10 and falls 2, two on chair frame that " U " shape is configured to by two and fall " U " shape frame 2 and be arranged in parallel, and connects as one by front rail 12, rear transverse rod 3." U " shape frame 2 tops are armrest, and the bottom is a seat leg; The inboard symmetry of its front end is equipped with two forks 9, and fork 9 lower ends and cushion 10 front end both sides are hinged; Cushion 10 front ends and pulldown bed tailgate 8 are hinged, and cushion 10 rear ends are hinged by the rotating shaft and the chair back 1; The chair back 1 both sides are adorned contrary flexure steelframe 5 respectively, contrary flexure steelframe 5 middle parts and armrest rear side are hinged, the back side of pulldown bed tailgate 8 is equipped with one and is used to promote its resupinate hound 6, and cut with scissors in a bit altogether by bearing pin on hound 6 rear ends and contrary flexure steelframe 5 bottoms and an elastic telescopicing rod top that is articulated on the rear transverse rod 3.Elastic telescopicing rod 7 is socketed to form by two joint blind pipes, and elastic telescopicing rod 7 inner chambers are equipped with back-moving spring or elastomeric material.

Contrary flexure steelframe 5 middle and lower parts are provided with " bow " shape hook 4, link up with 4 middle parts and have through hole and use bolting on contrary flexure steelframe 5, and the armrest inboard is provided with and links up with 4 corresponding alignment pins 11.When the chair back 1 was holded up, hook 4 rear transverse rods 3 (as shown in Figure 2) that hook on the seat back leg were locked under the upright state chair back 1; In the time of need setting level the chair back 1, untie hook 4, when treating that the chair back 1 forwards horizontal level to, will link up with again on the alignment pin 11 that 4 other end hangs over the armrest inboard (as shown in Figure 4), the chair back 1 can be fixed under the level.

Need to prove, relativeness between each parts of being described in the accompanying drawings (comprising position relation and magnitude relationship), only be for illustrative purposes,, can as required each parts be arranged on the position that needs as long as can realize the purpose of this utility model.Such as, link up with 4, in the accompanying drawings it is arranged on the middle and lower part of contrary flexure steelframe 5, it will be understood by those skilled in the art that as required, at different purposes, it can be arranged on any position of contrary flexure steelframe 5, for example contrary flexure steelframe 5 bends.

Although illustrated and described embodiment of the present utility model, for a person skilled in the art, be appreciated that under the situation that does not break away from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claims and equivalent thereof.

Claims

1. center of gravity servo-actuated couch chair comprises the chair back, cushion and falls the chair frame that " U " shape is configured to by two, and described two are fallen " U " shape frame and be arranged in parallel and connect as one by forward and backward cross bar, and its top is armrest, and the bottom is a seat leg; It is characterized in that: the inboard symmetry of described chair frame front end is equipped with two forks, and described fork lower end and described cushion front end both sides are hinged; Described cushion front end and movable tailstock support or pulldown bed tailgate are hinged, and this cushion rear end is hinged by the rotating shaft and the described chair back; Described chair back both sides are equipped with the contrary flexure steelframe respectively, described contrary flexure steelframe middle part is hinged with described armrest rear side, the back side of described movable tailstock support or pulldown bed tailgate is equipped with one and is used to promote its resupinate hound, and cut with scissors in a bit altogether by bearing pin on described hound rear end and described contrary flexure steelframe bottom and an elastic telescopicing rod top that is articulated on the described rear transverse rod.

2. according to the described center of gravity servo-actuated of claim 1 couch chair, it is characterized in that: described contrary flexure steelframe middle and lower part is provided with one " bow " shape hook, described hook middle part has through hole and uses bolting on described contrary flexure steelframe, and described armrest inboard and seat back leg are provided with and corresponding alignment pin or the cross bar of described hook.

3. according to the described center of gravity servo-actuated of claim 1 couch chair, it is characterized in that: described elastic telescopicing rod is socketed to form by two joint blind pipes, and described elastic telescopicing rod inner chamber is equipped with back-moving spring or elastomeric material.