CN1051853A - Equilibrant force spring and seat, back cushion - Google Patents

Abstract

The equilibrant force spring is similar to by one and does not seal rhombus, three spring and two pressure-bearing plates compositions that end points is a wire loop.Some equilibrant force springs are through on the trunnion shaft, one or a few trunnion shaft is fixed on the framework, and cover and make equilibrant force spring cushion with elastic fabric.Sofa that its operation principle is different from the past or foam-rubber cushion, its characteristics are can cause another pressure-bearing plate bounce-back when a pressure-bearing plate pressurized, make seat and back cushion produce the distortion that meets human body, provide more uniform supporting force to human body.Be applicable to and make sofa, office chair, leisure chaise longue, automobile chair, and pillow, mattress etc.

Description

Equilibrant force spring and seat, back cushion

Existing sofa, soft chair use spring or sponge to make the people increase the contact-making surface of human body and seat when seating.Because the supporting force that the distortion of existing sofa or foam-rubber cushion provides with it is directly proportional, on the other hand, be apparent that human body is when seating sofa or soft chair, the distortion of seat and back cushion is uneven, usually form the distortion of a sphere, this shows that the partes corporis humani can not be subjected to compression face and support uniformly, part, as take on top and waist and then can not get supporting substantially, this make body local muscle can not obtain good lax with have a rest, the reason of having a pain in the back is felt in these also a lot of just people's sitting meetings.

The objective of the invention is to: make sofa or soft chair so that seat and back cushion can produce the distortion that meets human body with a kind of novel spring-equilibrant force spring, provide uniform supporting force,, increase comfort to alleviate the fatigue of sitting to human body.

The equilibrant force spring is made up of special-shaped steel wire (as shown in Figure 1: Fig. 1-1 faces, and Fig. 1-2 overlooks, Fig. 1-3 side-looking) and two pressure-bearing plates (as shown in Figure 2: Fig. 2-1 faces, Fig. 2-2 side-looking).Elastic wire is similar to a rhombus that does not seal, three end points are wire loop, and the central plane of three wire loops is same plane, and steel wire is folded to central plane outside the wire loop end, so that spring is stressed along median plane, avoid spring end when the spring pressurized, to move laterally.The intensity of cushion, back cushion spring steel wire is selected respectively as required, and the length of spring is selected for use according to characteristics of human body's design, and spring also can be designed to (A, B are unequal among Fig. 1) of unequal arm, and can produce like this has effect than big bear power to the part.Pressure-bearing plate is by adhering to one deck sponge on the elasticity hard floor, a flexible projection with holes is fixed in its bottom surface, the length and width yardstick of bearing plate cooperates spring length, quantity by characteristics of human body and trunnion shaft is determined, as adopt the back cushion of two trunnion shafves, the length of spring and the length of bearing plate can be approximately 1/2nd of back cushion length, if along laterally adopting six groups of springs, then the width of bearing plate is about the sixth of back cushion.The two ends of spring steel wire are inserted the flexible projection of two bearing plates and just form an equilibrant force spring (Fig. 3), owing to connect the projection of spring and bearing plate certain flexibility is arranged, bearing plate can be done three-dimensional the rotation around spring end to a certain extent.Bearing plate and spring be connected the mode that also can adopt universal spherical joint, replace flexible projection (Fig. 2-3) with universal spherical joint.

The equilibrant force spring is sat, back cushion is made up of framework, trunnion shaft and equilibrant force spring, spring middle part steel wire ring is through on the trunnion shaft, the two-end-point wire loop interconnects about with the elasticity connecting axle, the trunnion shaft of putting on spring is fixed on the framework, cover with one deck elastic fabric at last again, seat, back cushion have just been finished.Figure 4 shows that back cushion and the cushion that trunnion shaft is formed that two trunnion shafves are formed, the one group of spring in back cushion top is shorter than lower springs.When actual design, can select the yardstick of trunnion shaft quantity and spring for use according to the characteristics of human body.The operation principle of this kind equilibrant force spring seat and back cushion is: when a pressure-bearing plate pressurized, it will rotate backward around trunnion shaft, another corresponding with it pressure-bearing plate then rotates forward, when two pressure-bearing plates on the same spring are subjected to equal pressure, rotate and just stop, under the pressure of equilibrium, spring deforms elastic force is equated with pressure.Because the shape facility of this spring, when camber of spring, two pressure-bearing plates are with parallel moving backward, also can rotate owing to pressure-bearing plate itself again around spring end, and certain elasticity arranged, so pressure-bearing plate can keep with human body identical contact-making surface being arranged, realize forming the complex-curved effect of human body with some facets.

The equilibrant force spring is sat, the advantage of back cushion is: be easy to appearance with its making sofa or soft chair, by suitable selection trunnion shaft quantity, adjust the curve of trunnion shaft position and trunnion shaft, just can obtain the sofa and the soft chair of different profiles, can meet the body configuration largely; This sits, the making of back cushion is that spring, trunnion shaft and frame structure are assembled, and is more simple and convenient than traditional sofa technology; Topmost advantage is that it can provide more uniform supporting force to human body, alleviates the fatigue of sitting, and control shoulder, lumbar strain illness are had positive effect.

The equilibrant force spring is sat, back cushion is suitable for making sofa, office chair, leisure chaise longue, automotive seat and mattress, pillow etc.

Claims (5)

1, equilibrant force spring seat and back cushion is made up of framework, trunnion shaft and spring, it is characterized in that:

A. described spring is novel equilibrant force spring,

B. the equilibrant force spring is made up of for wire spring and two pressure-bearing plates that flexibly connect with it of not sealing rhombus a profile.

2, according to claim 1, it is characterized in that this wire spring profile for not sealing rhombus, its three summits are wire loop, and the central plane of three wire loops is same plane, and steel wire is folded to central plane from the wire loop outside.

3, according to claim 1, it is characterized in that pressure-bearing plate has the elasticity hard floor, go up attached one deck sponge, fix a flexible projection or a universal hinge device that connecting hole is arranged under the base plate, the end of spring is inserted connecting hole and is connected with base plate, and bearing plate can be done three-dimensional the rotation around spring end.

4,, it is characterized in that wire loop in the middle of the equilibrant force spring is enclosed within on the trunnion shaft freely to rotate, and the wire loop at two ends is enclosed within on the elasticity connecting axle according to claim 1.

5, according to claim 1,2, it is characterized in that the equilibrant force spring steel wire coil around to being: during when the pressure-bearing plate pressurized, three wire loops all are deflationary trend.

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