CN102160721B

CN102160721B - Gravity center following couch

Info

Publication number: CN102160721B
Application number: CN201110075619.5A
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: 2014-10-08
Anticipated expiration: 2031-03-25
Also published as: CN102160721A

Abstract

The invention belongs to the field of furniture, and in particular relates to a gravity center following couch, which comprises a chair back, a cushion and a chair frame consisting of two inverted U-shaped frames; the upper part of the couch is provided with seat handrails, while the lower part is provided with seat legs; the inner side of the front end of the chair frame is symmetrically provided with two oscillating bars; the lower ends of the oscillating bars are hinged with two sides of the front end of the cushion; the front end of the cushion is hinged with a movable bed tail bracket or a movable bed tail plate; the rear end of the cushion is hinged with the chair back through a rotating shaft; two sides of the chair back are respectively provided with a bend-back steel frame; the middle of the bend-back steel frame is hinged with the rear side of the seat handrail; the back of the movable bed tail bracket or the movable bed tail plate is provided with a diagonal member used for pushing the movable bed tail bracket or the movable bed tail plate to turnover upwards; and the rear end of the diagonal member, the bottom end of the bend-back steel frame, and the top end of an elastic telescopic rod hinged to a rear crossbar are hinged to a point together through a pin shaft. By applying the gravity center following principle and technology of a composite planar four-bar mechanism, work is done through the gravity of a human body, and a user slightly applies force to break the balance so as to complete switching.

Description

Divan with following gravity center

[technical field]

The invention belongs to field of furniture, more particularly, relate to a kind of divan with following gravity center.

[background technology]

The at present seat of office, the chair back and seat are one, can not relative motion, only offer the function of people's seat; Although some leisure chaise longue has half sleeping function, in the time that people swings back, after the center of gravity of health, move, easily fall beyond supporting surface, turn over after causing chair together with people.Aircraft business class chair can provide sleeping or half sleeping function, for fear of after turn over and conventionally take the base of chair to be fixed on the method (being equivalent to infinitely-great supporting surface) on the plate of cabin.This method is obviously 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 people obtain real recovery.

[summary of the invention]

Technical problem to be solved by this invention is to provide a kind of simple in structure, easy to use, can be present (chair), the arbitrarily divan with following gravity center of switching of sleeping (bed) two states, system gravity does self adaptation and moves, guarantee to drop on all the time in supporting surface, the high-quality that allows government functionary can obtain the short time is had a rest.

Technical scheme of the present invention is: divan with following gravity center, comprise the chair back, cushion and fall by two the chair frames that " U " shape is configured to, described two fall " U " shape frame be arranged in parallel and connect as one by forward and backward cross bar, its top is armrest, bottom is seat leg; Inside described chair frame front end, symmetry 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 rotating shaft and the described chair back; Contrary flexure steelframe is equipped with respectively in described chair back both sides, 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 for promoting 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 being articulated with on described rear transverse rod.

As the further improvement of 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 is fixed on described contrary flexure steelframe with bolt, and described armrest inner side and seat back leg are provided with the alignment pin corresponding with described hook or cross bar.In the time that the described chair back is holded up, described hook hooks alignment pin or the cross bar in seat back leg, and the described chair back is fixed under upright state; Need to put down the chair back time, untie hook, in the time that the chair back forwards horizontal level to, then the other end of hook is hung in the alignment pin or cross bar of described armrest inner side, the described chair back can be fixed under level.

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

The invention has the advantages that: the following gravity center principle of having applied lanar four rod mechanism, do work by human bady gravitational, handoff procedure a little firmly can disequilibrate, system gravity drops in supporting surface all the time, the high-quality that makes government functionary can obtain the short time is had a rest, slow down fatigue, be conducive to increase work efficiency.

[brief description of the drawings]

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

Fig. 1 is the structural representation of the present invention under seat state,

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

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

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

In 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.

[detailed description of the invention]

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

Referring to Fig. 1,3, divan with following gravity center, comprises the chair back 1, cushion 10 and falls by two 2, two of chair frames that " U " shape is configured to and fall " U " shape frame 2 and be arranged in parallel, and connecting as one by front rail 12, rear transverse rod 3." U " shape frame 2 tops are armrest, and bottom is seat leg; Inside its front end, symmetry 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 rotating shaft and the chair back 1; The chair back 1 both sides anti-loaded bent 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 for promoting 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 being articulated with on 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, and hook 4 middle parts have through hole and are fixed on contrary flexure steelframe 5 with bolt, and armrest inner side is provided with and links up with 4 corresponding alignment pins 11.In the time that the chair back 1 is holded up, hook 4 rear transverse rods 3 (as shown in Figure 2) that hook in seat back leg, are locked under upright state the chair back 1; Need to set level the chair back 1 time, untie hook 4, in the time that the chair back 1 forwards horizontal level to, then hook 4 other end is hung on the alignment pin 11 of armrest inner side (as shown in Figure 4), the chair back 1 can be fixed under level.

It should be noted that, relativeness (comprising position relationship and magnitude relationship) between each parts of describing in the accompanying drawings, be only for illustrative purposes, as long as can realize object of the present invention, can as required all parts be arranged on to the position needing.Such as, link up with 4, be arranged in the accompanying drawings the middle and lower part of contrary flexure steelframe 5, it will be understood by those skilled in the art that as required, for different objects, can be arranged on any position of contrary flexure steelframe 5, for example contrary flexure steelframe 5 bends.

Although illustrated and described embodiments of the invention, for a person skilled in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is limited by claims and equivalent thereof.

Claims

1. divan with following gravity center, comprises the chair back, cushion and falls the chair frames 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 bottom is seat leg; It is characterized in that: inside described chair frame front end, symmetry is equipped with two forks, 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 rotating shaft and the described chair back; Contrary flexure steelframe is equipped with respectively in described chair back both sides, 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 for promoting 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 being articulated with on described rear transverse rod.

2. divan with following gravity center according to claim 1, 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 is fixed on described contrary flexure steelframe with bolt, and described armrest inner side and seat back leg are provided with the alignment pin corresponding with described hook or cross bar.

3. divan with following gravity center according to claim 1, is characterized in that: described elastic telescopicing rod is socketed to form by two joint blind pipes, described elastic telescopicing rod inner chamber is equipped with back-moving spring.