CN103156419A - Self-adaptation elastic chair composed of steel ring springs and hinge four-bar mechanism - Google Patents

Abstract

The invention discloses a self-adaptation elastic chair composed of steel ring springs and a hinge four-bar mechanism. A chair seat frame comprises a seat frame, a back frame and handrails. The seat frame, the back frame and the handrails are supported on the two steel ring springs. The hinge four-bar mechanism in a mechanical principle is formed by connection of the chair seat frame, the back frame, the handrails and connecting bars through four hinges. When the center of mass of a human body on the chair is displaced or a sitting position of the human body is changed, the springs deform, the hinge four-bar mechanism deforms, so that self-adaptation elastic floating of the seat frame is generated, a self-adaptation automatic inclined angle of the back frame is generated, and the chair is called as the self-adaptation elastic seat. The main body structure of an existing chair is rigid. The self-adaptation elastic chair creates a pioneer for the chair in an elastic main body structure. The back frame inclined angle of the existing chair needs to be manually adjusted. The self-adaptation elastic chair creates a pioneer of self-adaptation automatic adjustment of the back frame inclined angle. People sitting on the self-adaptation elastic chair feel quite soft, comfortable and convenient. The self-adaptation elastic chair is widely applicable to living at home, relaxation, working and studying.

Description

The self adaptation elastic chair that a kind of steel loop spring and four-bar linkage form

Affiliated technical field

The present invention relates to widely used chair in a kind of people's daily life, it is a kind of household leisure apparatus, is also a kind of office accommodation and schooling apparatus.

Background technology

Chair is widely used leisure, office and schooling apparatus in people's daily life.Analyzing the agent structure of present chair, can be divided into backrest, seat, foot rest three parts to it, is being rigidly connected of fixing between this three part of chair at present, and this is soft, the comfortable not reason of present chair.Some variable chairs in backrest angle of inclination need manual adjustments to change the angle of inclination at present, and this is convenient not.

Summary of the invention

Flexibility and comfortableness in order to improve chair the invention provides a solution, and a just ring spring is being installed between part and foot rest more than the seat of chair, fixedly being rigidly connected between them at present changed into elasticity connect.A kind of alleged four-bar linkage is arranged in theory of mechanics, and when wherein arbitrary bar was subjected to displacement, other three bar can corresponding displacement.We are designed to hinge four-bar structure alleged in theory of mechanics with backrest, seat, the handrail of chair, separately add a connecting rod.When the barycenter of the people on being sitting in chair was subjected to displacement or people's sitting posture changes, this four-bar linkage can automatically adapt to change of shape occurs, and is called adaptive motion.The result of design is that the barycenter of the people on being sitting in chair is subjected to displacement or people's sitting posture when changing like this, spring deforms, four-bar linkage deforms, self-adapting float can occur in seat, the self adaptation angle of inclination can occur in backrest, because part (comprising seat, backrest, handrail, connecting rod) more than the seat of chair is to be bearing on the steel loop spring, realize thus adaptive seat elastic floating and adaptive backrest automatic inclination angle, be referred to as the self adaptation elastic chair.

The invention has the beneficial effects as follows, the agent structure of existing chair is all rigidity, is referred to as the rigid body structure chair, and the present invention is that to have started a kind of agent structure be flexible, is referred to as the beginning of elastic body structure chair.Existing some can change the chair at backrest angle of inclination, all need manual adjustments to change the backrest angle of inclination, the present invention starts the beginning that a kind of self adaptation is regulated the backrest angle of inclination automatically.When people were sitting on this chair, seat had adaptive elastic floating, and backrest has adaptive angle wing drop, and it is very soft, very comfortable, very convenient that people can feel.

Description of drawings

The present invention is further described below in conjunction with accompanying drawing

Fig. 1 is structure diagram of the present invention

1. armrests 2.chair backrest 3. chair seat 4. connectingrod 5.steel loop spring 6. chair foot rests in figure

In Fig. 1, armrests (1) is fixedly connected with the upper installation foot of steel loop spring (5), chair foot rest (6) is fixedly connected with the lower installation foot of steel loop spring (5), steel loop spring (5) is to form around a circle with steel wire, this circle is the elastomer of spring, and such connected mode all is in elastic bearing the above part of seat (comprising armrests (1), chair backrest (2), chair seat (3), connecting rod (4)) of chair.By four chain connections, consist of thus four-bar linkage alleged in theory of mechanics between armrests (1), chair backrest (2), chair seat (3), connecting rod (4).

Each self adaptation elastic chair has two steel loop springs, is arranged on respectively the left and right both sides of chair, shown in Fig. 1 be the chair left side steel loop spring shape and with the connected mode of four-bar linkage, chair the right identical.

Claims (4)

1. the self adaptation elastic chair that forms of a steel loop spring and four-bar linkage, be made of armrests (1), chair backrest (2), chair seat (3), connecting rod (4), steel loop spring (5), chair foot rest (6).

2. self adaptation elastic chair according to claim 1, it is characterized in that: armrests (1) is fixedly connected with the upper installation foot of steel loop spring (5), chair foot rest (6) is fixedly connected with the lower installation foot of steel loop spring (5), and steel loop spring (5) is formed around a circle by steel wire.

3. self adaptation elastic chair according to claim 1, it is characterized in that: by four chain connections, consist of thus four-bar linkage alleged in theory of mechanics between armrests (1), chair backrest (2), chair seat (3), connecting rod (4).

4. self adaptation elastic chair according to claim 1, it is characterized in that: each chair has two steel loop springs, is arranged on respectively the left and right both sides of chair.

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