CN2469801Y

CN2469801Y - Improved chair back

Info

Publication number: CN2469801Y
Application number: CN01204361U
Authority: CN
Inventors: 张信义
Original assignee: JIAMU CO Ltd
Current assignee: JIAMU CO Ltd
Priority date: 2001-03-09
Filing date: 2001-03-09
Publication date: 2002-01-09
Anticipated expiration: 2011-03-09

Abstract

The utility model discloses an improved chair-back. Foam is spread at the front end of an inner backboard, surface cloth is covered on the surface of foam, an external backboard is fixed and connected at the rear side of the inner backboard which is provided with an opening, which is horizontally provided with a plurality of extention springs which can change with the back shape of a human body. When the rider reclines on the chair-back, the extention springs can change the shape with the body backline, thus accomplishing the softer and more comfortable reclining effect; at the same time, the waist of the rider can be encapsulated, thus reducing the vertebral load and achieving the efficacy of lowering soreness and back pain. The whole structure has great practicability.

Description

The modified chair back

The utility model relates to a kind of chair back, and referring in particular to a kind of being provided with on the chair back can be with the modified chair back of the extension spring of human body back curve distortion.

The general chair back is a foam of laying suitable thickness on a bent plank, coats a table cloth foam outside, thereby lies when leaning against on this chair back when occupant's back, and by foam, the chair back is softness comparatively, and lying, it is comparatively comfortable to lean on.Yet, it is not very good providing the resilient flexible of the chair back with foam, so, a kind of chair back (as shown in Figure 6) that is provided with the spring of tortuous wave-like on the chair back had just appearred afterwards, its spring by this wave-like produce the occupant lie by the time preferable comfortable effect.But, because the coefficient of elasticity of the structure of this wavy spring itself is less, make that its elongation when stressed is not good, promptly this wavy spring is along with the degree of human body back curve distortion is quite limited, the occupant is felt comfortably cool when taking, and that is caused in the time of also can't preventing to take for a long time simultaneously has a pain in the back.

The purpose of this utility model is exactly that the defective that overcomes prior art provides a kind of modified chair back with deficiency, one of its purpose is: when occupant's arm-chair of lying unlucky, spring in the chair back will be out of shape with the health back curve, thereby obtain comparatively soft, comfortable lying by effect; Occupant's waist can be coated simultaneously, reduce the heavy burden of vertebra, reach and reduce the effect of having a pain in the back.

Another purpose of the present utility model is: this chair back has ventilation, ventilative, not sultry effect.

The 3rd purpose of the present utility model is: the knee of seat side can be suitably against the chair back when this seat reclining.

For achieving the above object, the utility model adopts following technical proposals: lay foam at the entodorsum front end, at foam surface coverage table cloth, the outer backboard corresponding with the entodorsum shape is fixed in the rear side of entodorsum, opening is arranged on entodorsum, and laterally being provided with several in opening can be with the extension spring of human body back model deformation.

This entodorsum is PP (polypropylene) structure with outer backboard.

At the dual side-edge of entodorsum upper shed, there are several to be used for fixing the location division of the mutual correspondence of described extension spring.

The opening part on the corresponding entodorsum has several through holes on the backboard outside.

Have a frame to be trapped among the knee in the chair back outside in seat bottom, the shape of this knee is crooked with the shape of the chair back.

Described extension spring is flat oblique winding form.

Adopt technique scheme, owing to be provided with extension spring at the opening part of entodorsum, therefore, unlucky when occupant's arm-chair of lying, the spring in the chair back will be out of shape with the health back curve, thereby obtain comparatively soft, comfortable lying by effect; Occupant's waist can be coated simultaneously, reduce the heavy burden of vertebra, reach and reduce the effect of having a pain in the back; Because outside plate is provided with the through hole of sky, thereby the ventilation that can keep the chair back is avoided the occupant to recline the chair back for a long time and is produced sultry sense; In addition, utilize knee, can when the seat reclining, have a suitable retaining to lean on the chair back.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1 is the three-dimensional exploded view of the modified chair back of the present utility model;

Fig. 2 is the stereo amplification figure of the extension spring of the modified chair back of the present utility model;

Fig. 3 is the assembled sectional view of the modified chair back of the present utility model;

Fig. 4 is the entire combination stereo appearance figure of the modified chair back of the present utility model;

Fig. 5 is that cutaway view is used in the enforcement of the modified chair back of the present utility model;

Fig. 6 is the back structure figure that uses always.

As Fig. 1, shown in Figure 3, this chair back is made of jointly entodorsum 1, extension spring 2, foam 3, table cloth 4 and outer backboard 5; Wherein:

Foam 3 is laid on the front end face of entodorsum 1, table cloth 4 is coated on the surface of foam 3, offer a suitably opening 11 of size on the entodorsum 1, be provided with several corresponding location divisions 12 at these opening 11 dual side-edge places, organize at each and to fixedly install extension spring 2 (as shown in Figure 2) between the corresponding location division 12, each extension spring 2 horizontal standing in the opening 11.Set up backboard 5 outside at the rear side of inner panel 1, this outer backboard 5 is provided with several through holes 51, and each through hole 51 is corresponding to opening 11 places of entodorsum 1.This entodorsum 1 and outer backboard 5 are respectively the integrative-structures by PP (polypropylene) forming materials, and are suitable shape.

Extension spring 2 is the oblique winding of flat, and this extension spring 2 is narrower simultaneously, produces bigger activity space thus.This structure can make this extension spring 2 have stressed even, the preferable advantage of tensile elasticity.

When occupant on the seat, and lie (referring to Fig. 5) when leaning against on the chair back, because chair back inside is provided with extension spring 2, and this extension spring 2 can be with the curve deformation at health back, thereby make this chair back can be good at body support weight, reduce the heavy burden of vertebra; Simultaneously, by the shaped design of inside and outside backboard 1,5 (hypomere is slightly protruding, two sides be convex arc outward and forward), this chair back can suitably coat the health waist, thus reach when taking comparatively soft comfortable, reduce the purpose of having a pain in the back and protecting lumbar vertebrae.

In addition, can articulate the knee 6 (referring to Fig. 4) that a frame is trapped among chair back periphery below seat, the shape of this knee 6 is crooked with the shape of the chair back.Like this, when occupant's reclining seat, this knee 6 can be suitably against the chair back.

Claims

1. modified chair back, be covered with foam at the entodorsum front end, in the foam surface coverage table cloth is arranged, the outer backboard corresponding with the entodorsum shape is fixed in the rear side of entodorsum, it is characterized in that: opening is arranged on entodorsum, and laterally being provided with several in opening can be with the extension spring of human body back model deformation.

2. the modified chair back according to claim 1 is characterized in that: this entodorsum and outer backboard are respectively the integrative-structures by the polypropylene moulding.

3. the modified chair back according to claim 1 is characterized in that: the dual side-edge of the opening on entodorsum has several to be used for fixing the corresponding location division of described extension spring.

4. the modified chair back according to claim 1 is characterized in that: the opening part on the corresponding entodorsum has several through holes on the backboard outside.

5. the modified chair back according to claim 1 is characterized in that: the described chair back outside has a knee that is connected with seat bottom, this knee frame to be trapped among this chair back outside, and its shape is crooked with the shape of the chair back.

6. the modified chair back according to claim 1 is characterized in that: described extension spring is flat oblique winding form.