CN2456554Y

CN2456554Y - New chair back

Info

Publication number: CN2456554Y
Application number: CN01200518U
Authority: CN
Inventors: 冯德宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-01-15
Filing date: 2001-01-15
Publication date: 2001-10-31
Anticipated expiration: 2011-01-15

Abstract

The utility model relates to a novel backrest of a chair. The utility model is characterized in that the utility model comprises two sub-backrests which are parallel in a longitudinal way and are connected to a back rack via elastic materials. The backrest can be twisted to every direction along with the forms of human body to enable people to feel comfortable at will and overcome the defect that an ordinary backrest of a chair can not be changed along with the variation of human body.

Description

Novel seat back

The utility model relates to a kind of novel seat back.

Common seat back all can not be along with people's the bodily form and sitting posture torsional direction.Even the seat back that has can recede in the vertical but hardness is bigger, make its amplitude of variation limited, can not be with the minor variations of body state torsional direction.When people can feel very tired after the long-time sitting on this seat.

The purpose of this utility model is the shortcoming that overcomes the seat back of prior art.A kind of seat back that can both change with human figure at vertical and horizontal is provided.

The purpose of this utility model be this realize: it comprise two vertical branch backrests arranged side by side and by elastomeric material be connected the back of the body frame on.

Described elastomeric material is high resiliency natural rubber or at least one metal spring.

The radian of described minute its horizontal oriented seat support direction of backrest, it vertically has radian backward, to be fit to the shape of human body.

Described back of the body frame is made of with crossbearer vertical with stand and that be connected in the stand top two stands that are connected with the seat mounting, and this crossbearer has and the described minute identical radian of backrest.

Described elastomeric material is connected near the two ends of described crossbearer; The other end is connected the middle part of the rear side of described minute backrest, and described minute backrest is under the state that does not stress, and its upper end recedes slightly, and it is laterally parallel with described crossbearer radian.

The utility model has the advantages that: owing to adopted two vertical branch backrests arranged side by side to be connected backrest and back of the body frame with elastomeric material, make the branch backrest in that both direction can both be with the human figure torsional direction in length and breadth, make it more even near human body, human body and backrest contact area are increased, the people is subjected to backrest pressure thereby reduce body local, so also can not feel fatigue after sitting.But the people is felt comfortably cool, arbitrarily.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model schematic rear view;

Fig. 2 is the utility model schematic side view;

Fig. 3 is a transverse sectional view, and elastomeric material is a rubber;

Fig. 4 is another embodiment of the present utility model, and elastomeric material is a helical spring.

As shown in Figure 1 to Figure 3, two vertical branch backrests arranged side by side 1 are connected with the crossbearer 3 of carrying on the back frame by elastomeric material 2, and two branch backrests 1 are in that forward a radian is laterally arranged, and are identical with the radian of described crossbearer 3.Described crossbearer 3 is connected the top of two stands 4.Elastomeric material 2 in the present embodiment is elastomeric natural rubbers.

Second embodiment of the utility model has been shown among Fig. 4, and described in this embodiment elastomeric material 2 is helical springs of a metal, also can be with a plurality of such spring parallel connections.

Elastomeric material in the utility model can be any elasticity thing of other shapes.

Claims

1, a kind of novel seat back is characterized in that: comprise two vertical branch backrests arranged side by side and by elastomeric material be connected the back of the body frame on.

2, according to the described novel seat back of claim 1, it is characterized in that: described elastomeric material is the high resiliency natural rubber.

3, according to the described novel seat back of claim 1, it is characterized in that: described elastomeric material is at least one metal spring.

4, according to the described novel seat back of claim 1, it is characterized in that: the radian of described minute its horizontal oriented seat support direction of backrest, it vertically has radian backward, to be fit to the shape of human body.

5, according to the described novel seat back of claim 1, it is characterized in that: described back of the body frame is made of with crossbearer vertical with stand and that be connected in the stand top two stands that are connected with the seat mounting, and this crossbearer has and the described minute identical radian of backrest.

6, according to claim 1 or 5 described novel seat backs, it is characterized in that: described elastomeric material is connected near the two ends of described crossbearer; The other end is connected the middle part of the back of described minute backrest, and described minute backrest is under the state that does not stress, and its upper end recedes slightly, and it is laterally parallel with described crossbearer radian.