CN1045516A

CN1045516A - Seat, back cushion interlock, changeable inclination structure of chair

Info

Publication number: CN1045516A
Application number: CN 89106032
Authority: CN
Inventors: 张云辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-11-12
Filing date: 1989-11-12
Publication date: 1990-09-26

Abstract

Seat, back cushion interlock, the changeable inclination structure of chair.

Belong to daily living article, the seat class.

The cushion of this kind structure of chair is equipped with roller, roller can roll in the race of chair frame side, cushion is connected with hinge or hinge with back cushion, its hypsokinesis is controlled by pair of support arms in back cushion top, and cushion is controlled flexibly by the simple motion of human body by roller and moved forward and backward, and drives the back cushion lower end the back inclination of back cushion is changed, so adapt to the sitting posture conversion, the small of the back is relied on uniformly, alleviate the fatigue of sitting, to such an extent as to treatment the small of the back illness.This structure is used to make armchair, sofa, tourism folding seat and is put in chair core that uses on other chair or the sofa etc.

Description

Seat, back cushion interlock, changeable inclination structure of chair

Belong to daily living article, the seat class.

Existing general seat or sofa do not possess the function of inclination after the flexible modulation backing cushion, by the chair of the variable pitch of mechanical device control and complicated electronic tip-up seat then complex structure, involve great expense, and since backrest rotate institute around axle and the person rotate around axle base bigger, to making human body back and back cushion also relative upper and lower displacement will take place when the rotation.The people regular meeting of sitting sofa or office chair does not feel well; so that have a pain in the back; if this is because people keep a motionless meeting of posture sitting to make muscle rigidity; and people's posture seating angle changes; seat or sofa are constant; then the small of the back can not obtain evenly strong support, and the local muscle of the small of the back is in running order all the time.No matter be to be sitting on the sofa or on the chair, it is frequent situation that " triangle vacancy "-waist bottom to the buttocks of waist bottom can not get relying on, people use pillow always, bustle is overcome but desirable not to the utmost.

The objective of the invention is to: optionally regulate the gradient of cushion and backing cushion flexibly with the simple motion of health, make the small of the back all can obtain relying on uniformly comprehensively, thereby alleviate the fatigue of sitting in any inclination.

This structure of chair is made up of chair frame, cushion frame and back cushion frame and several parts of support arm, Fig. 1-1 is a slice chair frame border side view, scuncheon has race (1), on armrest rear end and the back leg inboard each fix a dead axle roller (2), the chair frame is made up of with the front and back connector two frames, sees Fig. 1-2.Fig. 2 is cushion frame and back cushion frame, and employing can the folding mode connect together, and a pair roller (3) is respectively adorned in cushion frame both sides, has axis hole (4) to reach the groove of secretly putting support arm on the back cushion frame.Fig. 3 is a support arm.Fig. 4-1 is the assembling lateral side view, and Fig. 4-2 is assembling back front view, and Fig. 4-3 analyses and observe for the A-A of Fig. 4-2.Fig. 5 is chair work schematic diagram for this reason.Fig. 6 is for adopting the tip-up seat core of this structure.According to different needs, mounting spring pad or foam-rubber cushion on cushion frame and back cushion frame also can all be wrapped handrail and make sofa.When making the chair core with this structure, because the chair core is to be placed on existing chair or the sofa to use, so support arm is replaced by the cylinder that is fixed on the chair core backrest, its backrest also will be made two sections, and epimere can be turned back forward when chair cushion moves downward.

Use this structure of chair, back rest upper support shaft position must be chosen suitably, (also can provide some positions, be selected voluntarily by the user) generally is positioned at several centimeters places on the human body hypsokinesis pressure concentrated force, can make any in use position of this structure all can be in balance like this.When needs increase the inclination angle, as long as slightly with pressing behind the shoulder, at this moment the hypsokinesis masterpiece is used for the bolster top, and cushion just moves forward by roller, because high back is low before the race axis, front end raise gradually when cushion travelled forward, the needs that can adapt to human comfort, when cushion moved forward, the lower end of backing cushion moved forward with cushion, and its bolster descends with support arm, so backing cushion hypsokinesis gradually.Cancel the balance of heavily getting back when shoulder pressure or cushion move forward to the end and be obstructed, when the back gently from back cushion, shank just resets gradually gently to pusher.

The invention has the advantages that: by the principle of simple structure and mechanical balance, make seat or sofa change the back inclination, conform to the needs of human body sitting posture conversion by the simple flexible movements of human body.And, backing cushion rotate around axle-promptly the connect axle of the hinge of cushion and backing cushion, with human body rotate around axle-promptly parallel and very approaching perpendicular to the axis of human body tail bone with backrest, human body back and the chair back cushion relative motion under supreme substantially during rotation, giving one takes, at will moving forward and backward, become and incline, is the sensation of one all the time with chair, has alleviated the fatigue of sitting to the even strong support of people's the small of the back.

Seat, back cushion interlock, the changeable inclination structure of chair is used to make armchair, sofa, tourism folding seat and is put in the chair core that uses on other seat or the sofa, can use timber, plastics or metal material manufacturing.

Claims

Technical characterictic of the present invention is:
1, a kind of cushion and back cushion interlock, changeable inclination structure of chair, this structure of chair cushion adopts reflexibie mode to be connected with back cushion two parts, as hinge, leather, nylon cloth etc.; When cushion moves in the race of chair frame side by roller or roller bearing or slide block, move with cushion the back cushion lower end, and owing to the bolster that is positioned at back cushion top is made vertical motion, and make back cushion change the back inclination, this structure of chair in use optional position all can be in balance, is moved forward and backward and the back inclination of backing cushion by the simple motion of human body control cushion.
2, according to claim 1, two medial surfaces of chair frame have roller groove, and the race axis is the low smoothed curve in high back before.
3, according to claim 1, bolster is equipped with in the back cushion both sides, and bolster or hinged with the support arm that can move up and down perhaps can move in the trapped orbit groove of chair frame.
4, according to claim 3, the support arm upper end is articulated in the back cushion back shaft, by two wheel shaft or rail groove orientations that are fixed on the chair frame, can move up and down.
5, according to claim 1, when this structure was used for the chair core, support arm was cylinder or the roller that is fixed on the back cushion middle part, can directly roll or roll along the rail groove that is attached on the chair back along the seat back of the body that depends on.