CN2671433Y

CN2671433Y - Chair back

Info

Publication number: CN2671433Y
Application number: CNU2004200002102U
Authority: CN
Inventors: 刘煌章
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-05
Filing date: 2004-01-05
Publication date: 2005-01-19
Anticipated expiration: 2014-01-05

Abstract

The utility model relates to a chair back made of rigid plastic plates. The utility model has excellent elastic effect and is comfortable to lean, properly supporting the back of the human body. The chair back is mainly composed of a back leaning plate and a back plate. The back leaning plate is provided with an engraved hollow slot provided with an elastic plate. The back plate is provided with a positioning sleeve, and between the back plate and the back leaning plate a spring is arranged. Via the structure, the elastic plate has the elastic variation effect in the front, back, left, and right angles. Thus, the utility model is comfortable to lean, and the elastic plate has good effect of closed contacting and supporting the human bodies according to the variation of the human bodies.

Description

The chair back

Technical field

The utility model relates to the chair back made from rigid plastics, has splendid elastic effect, therefore can have lean on comfortable, all can keep the effect of closely connected support in response to the human body change.

Background technology

Existing armchair structure from the plastics ejection formation, cardinal principle shown in Fig. 1 and A-A cutaway view, are backboard 12, the seat boards 11 that is set as the one ejection formation all, assemble the chair pin again, that is conventional seat are simple one-body molded plastic plate structure.Therefore, have following shortcoming:

(1) backboard 12 does not have elasticity, so the comfort during dependence is relatively poor.

(2) in addition, the seat of establishing slotted eye at backboard is arranged also, still, its purpose is ventilated, therefore, is subject to the problem of endurance strength, so although its grooved hole, but upper and lower side also connecting, thereby the elasticity of its generation is still limited, does not still have the comfortable effect of elasticity.

The utility model content

In order to overcome weak point of the prior art, major technique purpose of the present utility model is to provide a kind of chair back of seat, and this chair back is from having following effect:

One, be set as by the backboard that has the backboard of engraving dead slot and elastic plate, has positioning sleeve combined integrated, but make elastic plate have space elasticity start.Therefore, have elastic plate and lean on, reach and promote comfortable effect for elasticity.

Its two, between the elastic plate of backboard, backboard, be provided with spring, can promote elastic effect, and have in response to the body angle change and keep the effect of closely connected support.

Its three, backboard, backboard are formed one, therefore, can arrange in pairs or groups and use in the chair with chair pin, seat board, also can place general chair to use as auxiliary backrest separately, practicality is extensive.

For achieving the above object, the utility model provides a kind of chair back, comprises: backboard, backboard, spring are formed; It is characterized in that,

One backboard is provided with and engraves dead slot, and is formed with the elastic plate of oblique protrusion, and the back side of elastic plate is provided with reference column;

One backboard is combined in the back side of backboard, and its front is provided with the positioning sleeve corresponding to the elastic plate reference column;

One spring, an end is inserted in the positioning sleeve, and the other end then overlaps the reference column due to elastic plate, forms both ends of the spring and peaks between backboard and elastic plate.

By above-mentioned, have the good elastic plate of elasticity with the backboard of plastic shaping, and cooperate the elastic force of spring to shore, elastic plate is had can be changed in response to the human body back angle, still keep the closely connected effect that supports.

Description of drawings

Fig. 1 is the solid and the A-A cutaway view of the existing chair back.

Fig. 2 is that the utility model reaches (a) front view three-dimensional the decomposition.

Fig. 3 analyses and observe for the utility model side-looking and front and back action schematic diagram.

Fig. 4 overlooks for the utility model and analyses and observe and left and right sides angle motion schematic diagram.

Fig. 5 is the use illustration of the utility model combo in seat board, chair pin state.

Fig. 6 is that the utility model uses illustration as the auxiliary backrest of general chair.

Fig. 7 is the embodiment three-dimensional exploded view of elastic plate and backrest separate type for the present invention.

Specific implementation method

See also Fig. 2,3,4, the chair back of the present utility model comprises: backboard 30, backboard 36, spring 35; Wherein,

One backboard 30 is provided with and engraves dead slot 31, and is formed with the elastic plate 32 of oblique protrusion, and the back side of elastic plate 32 is provided with reference column 33;

One backboard 36 is combined in the back side of backboard 30, and its front is provided with the positioning sleeve 38 corresponding to elastic plate 32 reference columns 33, and the bottom is provided with cover and decides flange 39 in the positioning sleeve 38, and the peristoma inwall of positioning sleeve 38 is set as inclined-plane 380;

One spring, 35, one ends are inserted in the positioning sleeve 38, and quilt cover decides flange 39 and limit, and the other end then overlaps the reference column 33 due to elastic plate 32, form spring 35 two ends and peak at 32 of backboard 36 and elastic plates;

The combination of one backboard 30, backboard 36 is set as backboard 30 peripheries and is provided with several screw seats 34, backboard 36 peripheries and is provided with corresponding locking holes 37, and fitted bolt be worn sealed backboard 30 of group and backboard 36.

Backboard 30 of the present utility model, backboard 36 combinations, only need spring 35 1 ends are inserted in the positioning sleeve 38 of backboard 36, and backboard 36, backboard 30 corresponding closings, its spring 35 other ends just can be sleeved on the reference column 33 of backboard 30, it is sealed to get final product fitted bolt, so, have extremely simple and easy, the effect fast of assembling.

And after finishing above-mentioned backboard 30, backboard 36 combinations, the enforcement user mode that can be Fig. 5, Fig. 6, Fig. 5 is assembled in the seat board 40 with chair pin, form a chair state, Fig. 6 can place general chair with backboard 30, the backboard of forming 36, be posted by the backrest of chair, form the effect of supplemental support human body back, that is dislocation uses in general chair arbitrarily.So, can reach practical effect widely.

In addition, the utility model also can be with backboard 30 and elastic plate 32 thereof, be set as individuality, the recombinant one (shown in Figure 7) of separation, be mainly: backboard 30 is engraved dead slot 31 upper end bilaterals and is provided with boss 301, elastic plate 32 is set as independent individual and is provided with jack-post 320 in the upper end bilateral, twin shaft post 320 is plugged together the two bosses 301 in backboard 30 again, forms backboard 30, backboard 36 binding one, in addition, certainly also in back side assembling backboard 36, and backboard and 32 of elastic plates be provided with spring; Above-mentioned, belong in the equivalent structure intention category of the present utility model.

And, effect of the present utility model, advantage, specification specified is as follows again:

1, the dependence comfort is good:

See also Fig. 3, shown in Figure 4, when human body back leans in backboard 30, at first can The elastic plate 32 that is protruded is conflicted, and elastic plate 32 cordings are flexible, so, past at the back It is initial that backboard 30 reclines, and can have the effect of elastic buffer, and more comfortable sensation is arranged. Again, user's health back 41 has the back unavoidably when leaning on backboard 30 elastic plate 32 Toward leaning forward or slightly from the situation of backboard 30, at this moment, because elastic plate 32 has elasticity, So automatically start forward, the state that maintenance and back support, that is still having conflicts supports The effect at back, intelligible, have better comfort.

2, the effect of spring 35:

Please consult Fig. 3, Fig. 4, spring 35 stays on 32 of backboard 36, elastic plates, bullet again Spring 35 has elasticity, can have the effect of auxiliary cushion effect, increase endurance strength, therefore, and can Allow elastic plate 32 make plastic material thinner, that employing is more soft, can promote elastic effect.

Again, the elastic force of spring 35 can make elastic plate 32 keep supporting in health 41 backs, removes Have forward and backward elasticity start and support (shown in Figure 3), when health 41 turns to an angle, because of The material that elastic plate 32 is softer, have elasticity, so can be shown in Figure 4, also turn to health 41 One angle reaches and can keep the closely connected effect that supports because of angle. In addition, when turning to an angle, Positioning sleeve 38 upper end peristoma inwalls are provided with inclined-plane 380, so can in response to the spring 35 of bending, make bullet Spring 35 can not cause because angle of bend is excessive be stuck can not elastic telescopic effect.

Again again, be worth mentioning, the utility model is shored because elastic plate 32 is subjected to spring 35, should Spring 35 can adopt brute spring, thus when human body back leans on, can give brute force and shore, at this moment, (back is not straight) person leans on if any the song back of the body, because the brute force of elastic plate 32 is shored, and can impel the back of the body The effect that section directly changes, that is the utility model elastic plate can have auxiliary back and beat straight effect.

3, air permeable effect is good:

The utility model backboard 30 is provided with and engraves dead slot 31, elastic plate 32 is oblique shape and protrudes, because of This is formed with the space, and this engraves dead slot 31 formed spaces, namely is to have splendid ventilative merit Effect.

Claims

1. chair back comprises: backboard, backboard, spring, and it is characterized in that,

One spring, an end is inserted in the positioning sleeve, and the other end then overlaps the reference column due to elastic plate, and both ends of the spring peaks between backboard and elastic plate.

2. the chair back according to claim 1 is characterized in that, the positioning sleeve peristoma inwall of this backboard is set as the inclined-plane, and being used for changes an angle when causing the spring bending angle in response to elastic plate, prevents that the spring cover that is positioned is stuck.

3. the chair back according to claim 1 is characterized in that:

This elastic plate can be set as independently individual, and bilateral is established jack-post in the upper end, and backboard is engraved dead slot upper end bilateral and then is provided with corresponding boss, and jack-post is combined in boss, makes elastic plate, backboard link one.

4. the chair back according to claim 1 is characterized in that, in this backboard positioning sleeve, decides the cover of spring and decides flange but be provided with auxiliary sleeve.