CN201870161U - Asymmetrical flexible backrest combining component for seats - Google Patents

Abstract

The utility model relates to a flexible backrest combining component for seats, which is an elastic body made of elastic materials. The flexible backrest combining component for seats comprises a base and an elastic arm which extends towards two ends to form a left elastic arm and a right elastic arm, wherein the base is made of rigid materials and inlaid inside the elastic materials. An installation hole and an inner hexagonal counter bore are arranged in the middle of the base. Sleeves are deep inlaid at ends of the elastic arm, and materials of the sleeves are the same with those of the base, a through hole and a counter bore are arranged in the middle of each of the sleeves. The flexible backrest combining component for seats is characterized in that the left elastic arm and the right elastic arm are asymmetrical, and the left elastic arm is longer, and the surface shape of the left elastic arm is formed by an inclined surface and an arc surface, while the right elastic arm is short and provided with a limiting groove. A lower plane of the elastic body is designed into an arc shape. The flexible backrest combining component for seats has the advantages of being simple in structure, economical and practical, safe and comfortable in use.

Description

The flexible backrest conjunction of a kind of asymmetric thing to sit on

Technical field

The utility model relates to the coupling apparatus of a kind of thing to sit on backrest and back rest, particularly about the coupling apparatus of flexible thing to sit on backrest and back rest, belongs to furniture and makes the field.

Background technology

Raising along with living standards of the people, requirement to thing to sit on is also more and more higher, for meeting the needs of, the thing to sit on kind of manufacturer's exploitation is also more and more, wherein the use of chair is extensive especially, people at home, office etc. all be unable to do without chair, the personage of office particularly, be sitting on the chair for a long time, requirement to chair is very high, its chair back of traditional chair generally all is whole, and its angle is fixed, different people takes that it is stressed different, human body sensory is uncomfortable, adaptability is relatively poor, be easy to generate fatigue after long-term the seat even pathology takes place, therefore, develop a kind of simple in structure, economical and practical, use comfortable chair, particularly the chair back has the chair of adaptation function, it is the target that the thing to sit on industry is constantly pursued always, inventor's invention has also been applied for a kind of chair with self adaptation backrest that a kind of chair (2006201087427) that has flexible backrest of the utility model patent of obtaining the authorization comes to this, in order to realize such function, chair back conjunction wherein is a key, inventor's invention and the number of patent application of having applied for a patent are 200920118602.1 a kind of flexible backrest thing to sit on, number of patent application is 200920118496.7 a kind of flexible thing to sit on backrest conjunction, number of patent application is to disclose a series of chair back conjunctions in 201020003160.9 the utility model patents such as the flexible backrest conjunction of a kind of thing to sit on that has a positioning seat, wherein having a kind of is the special-shaped elastomer of being made by elastomeric material, the pedestal that a rigidity all arranged in the end of elastomeric centre and elastic arm and sleeve pipe are used for and being connected of the chair back and chair back rack, two elastic arms reach the purpose of chair back flexibility along with the motion of human body produces compression or stretches in this conjunction with the variation that adapts to chair back angle, but in use, because the elastic arm of top is stressed with following elastic arm to be different, the elastic arm of top mainly is subjected to is extruding force and following elastic arm mainly is subjected to is tensile force, because what laterally zygomorphic design was but born is asymmetric power, often cause the fracture earlier of stressed big elastic arm, influence the service life of chair, how overcoming above-mentioned defective is the problem that the industry is being studied always to improve performance.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, develops a kind of flexible thing to sit on backrest conjunction to improve the service life of flexible chair, requires to have comfortable advantage simple in structure, economical and practical, safe in utilization.

The purpose of this utility model is realized by following technical scheme.The flexible backrest conjunction of a kind of asymmetric thing to sit on, it is the elastomer of making by elastomeric material, comprise a pedestal and the elastic arm that extends to two ends, pedestal is made by rigid material, be embedded in the elastomeric material, there are an installing hole and interior hexagonal counterbore in the centre of pedestal, buriedly in the end of elastic arm be inlaid with a sleeve pipe, shell material is identical with base material, and a through hole and counterbore are arranged in the centre of sleeve pipe, two elastic arms are asymmetric about it is characterized in that, the elastic arm on the left side is longer, and its surface configuration is made of an inclined-plane and cambered surface, and the elastic arm on the right is shorter, it is provided with a stopper slot, and elastomeric lower plane also is designed to arc.

During use; through hole by the elastic arm end is fixed together the conjunction and the chair back; again conjunction and the chair back rack installing hole by the centre is fixed together; make short elastic arm in the above; long elastic arm below; like this; in use; when top elastic arm is squeezed power; because the arm of force can bear bigger power than weak point, and following elastic arm is owing to be subjected to tensile force, and the arm of force is long and be that arc can bear bigger pulling force; stopper slot can limit the angle of inclination of the chair back with the protection conjunction, and the lower plane of conjunction is designed to arc can reduce stress and stretch-proof performance.

In the utility model, main by conjunction being used the analysis of stressing conditions change shape, adapt to asymmetric stressed by asymmetric design and cambered surface design, as long as changing mould can realize, technology is very simple, substantially do not increase cost, therefore, the utlity model has comfortable advantage simple in structure, economical and practical, safe in utilization.

Description of drawings

The flexible backrest conjunction of a kind of asymmetric thing to sit on of Fig. 1 structural representation

Fig. 2 is the A-A cutaway view of Fig. 1

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the flexible backrest conjunction of an a kind of asymmetric thing to sit on structural representation, Fig. 2 is the A-A cutaway view of Fig. 1, at first according to mould of shaped design of Fig. 1 and Fig. 2, make that the elastomer total length is 117mm, centre distance from the center of the installing hole 6 of middle pedestal to the cover pipe through-hole on the left side is 53mm, its upper surface is smoothly transitted into an arc surface 3 by an inclined-plane 4, cover pipe through-hole centre distance from the installing hole center of middle pedestal to the right is 41mm, a stopper slot 8 is offered on the surface thereon, its width is 6mm, two ends, elastomer left and right sides thinnest part is 20mm, intermediate base is up to 35mm, the width basically identical is 28mm, and its lower plane intermediate recess becomes two arch cambered surfaces.With pedestal 5 of metal material processing, the upper end rectangularity of pedestal, long 35mm, wide 20mm, the diameter of middle installing hole 6 is 8mm, the opposite side distance of interior hexagonal counterbore 7 is 15mm, and the bottom of pedestal becomes column type, and external diameter is 18mm, make two sleeve pipes 9 with metal material equally, its external diameter is 18mm, and the diameter of intermediate throughholes 1 is 6mm, and the diameter of counterbore 2 is 12mm, its upper end is an inclined-plane, a pedestal is placed in the position of corresponding pedestal in mould, places a sleeve pipe at corresponding elastic arm end position, in mould, pour into silicon rubber by hot-forming be a flexible backrest conjunction of asymmetric thing to sit on.

Claims (2)

1. flexible backrest conjunction of asymmetric thing to sit on, it is the elastomer of making by elastomeric material, comprise a pedestal (5) and the elastic arm that extends to two ends, pedestal is made by rigid material, be embedded in the elastomeric material, there are an installing hole (6) and interior hexagonal counterbore (7) in the centre of pedestal, the buried sleeve pipe (9) that is inlaid with in the end of elastic arm, the centre of sleeve pipe offers a through hole (1) and counterbore (2), two elastic arms are asymmetric about it is characterized in that, the elastic arm on the left side is longer, and its surface configuration is made of an inclined-plane (4) and cambered surface (3), the elastic arm on the right is shorter, is provided with a stopper slot (8).

2. the flexible backrest conjunction of a kind of asymmetric thing to sit on according to claim 1 is characterized in that described elastomeric lower plane depression and camber.

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