CN2787077Y - Chair backrest and chair using same - Google Patents
Chair backrest and chair using same Download PDFInfo
- Publication number
- CN2787077Y CN2787077Y CN 200520012445 CN200520012445U CN2787077Y CN 2787077 Y CN2787077 Y CN 2787077Y CN 200520012445 CN200520012445 CN 200520012445 CN 200520012445 U CN200520012445 U CN 200520012445U CN 2787077 Y CN2787077 Y CN 2787077Y
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- CN
- China
- Prior art keywords
- chair
- backrest
- sections
- supporting rods
- back frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The utility model relates to a backrest for a chair, wherein each of longitudinal supporting rods which are arranged on both sides of a backrest frame is composed of two sections or more than two sections of sectioned supporting rods. The ections of the sectioned supporting rods which are arranged on each side of the backrest frame are connected together through torsion springs among the sections. A chair which uses the backrest comprises a chair seat and chair legs, wherein each of the longitudinal supporting rods which are arranged on both sides of a backrest frame is composed of two sections or more than two sections of sectioned supporting rods. The sections of the sectioned supporting rods which are arranged on each side of the backrest frame are connected together through the torsion springs among the sections. The chair of the utility model has the advantages of simple structure and low cost through the mode that the longitudinal supporting rods which are arranged on both sides of the backrest frame are designed into two sections or more than two sections and the sections of the longitudinal supporting rods which are arranged on each side of the backrest frame are connected together by the torsion springs, and the backrest generates backward inclination by the deformation of the torsion spring. Simultaneously, because the strength of the torsion springs is high, the backrest has reliable elasticity.
Description
Technical field
The utility model relates to the office appliance technical field, the chair that relates in particular to a kind of back and use this backrest.
Background technology
Chair is the necessity of daily life, particularly need often be sitting in the personnel that handle official business on the chair for those, and as software programming personnel, secretarial personnel or drawing designer etc., a comfortable chair just seems even more important.At present, people have designed various comfortable chairs, have shown the elasticity chair that a kind of backrest can be swung back as Fig. 1, and this chair rotates around the fulcrum under the seat support, thereby realize the backrest swing.But this chair need dispose complex mechanical construction, as shown in Figure 1, is provided with the coil spring of the usefulness that resets and the position-limit mechanism of restriction backrest inclination angle below this seat support.Therefore there is complicated in mechanical structure in this chair, the high and expensive shortcoming of cost.
The patent No. is that the Chinese patent of CN02237010.2 has disclosed a kind of chair with elastic strip, as shown in Figure 2, the backrest of this chair is made up of seat back frame and a plurality of elastic strips that are installed on the seat back frame, and this chair can utilize the distortion of elastic strip to make backrest produce layback.Though this chair is simple in structure, need to use a large amount of, high-quality elastic strip, make that the cost of this chair is too high, cost an arm and a leg; And the elastic strip of this chair is exposed, very not attractive in appearance.
The patent No. is that the Chinese patent of CN00248735.7 has disclosed a kind of chair with elastic supporting pipe, as shown in Figure 3, the longitudinal bracing pipe of the back frame of this chair be designed to two the joint or two the joint more than, and respectively saving stay pipe connects by shell fragment, in order to guarantee bonding strength, also be provided with coil spring (as shown in Figure 4) sometimes in each outer race that saves the junction of stay pipe.This chair relies on the distortion of shell fragment to make backrest produce layback.But in order to guarantee that shell fragment has certain elasticity, this shell fragment can not be manufactured too thickly, therefore, this shell fragment bears the insufficient strength of pressure, usually need be outside this shell fragment sheathed coil spring to strengthen its intensity, and exposed coil spring can cause the backrest profile not attractive in appearance, is difficult to decorate, and increases shortcoming such as cost.And this shell fragment can only produce before and after flexural deformation, can not produce left and right sides to strain, therefore, its level of comfort is not ideal enough.
The utility model content
In view of this, the purpose of this utility model just be to provide a kind of simple in structure, intensity is high, with low cost, beautiful and comfortable, the rubber-like back.
Another purpose of the present utility model just is to provide a kind of chair that uses above-mentioned backrest.
In order to solve the problems of the technologies described above, the utility model provides a kind of back, wherein, the vertical supporting bar of described back frame both sides is made of two joints or the above segmentation support bar of two joints, and the torsion spring of segmentation support bar by internode that respectively save of described each side of back frame links together.
The utility model also provides a kind of chair that uses above-mentioned backrest, comprise seat support and chair leg, wherein, the vertical supporting bar of described back frame both sides is made of two joints or the above segmentation support bar of two joints, and the torsion spring of segmentation support bar by internode that respectively save of described each side of back frame links together.
Further, the two ends of described torsion spring are welded on the segmentation support bar.
Further, described chair also comprises the handrail that is arranged on the seat support left and right sides.
Further, the surface of described backrest and seat support is provided with decorative mat.
Further, the surface profile of described decorative mat becomes streamlined.
Further, described decorative mat and backrest and seat support are integrally formed.
The utility model compared with prior art, be designed to two joints or two joints are above and link together with the vertical supporting bar that respectively saves of torsion spring with each side of back frame by vertical supporting bar with the back frame both sides, distortion by torsion spring makes backrest produce layback, makes that Chair structure of the present utility model is simple, cost is low; Simultaneously because torsion spring intensity height makes that this backrest elasticity is reliable.
Description of drawings
Fig. 1 is the structural representation of existing a kind of chair.
Fig. 2 is existing a kind of structural representation with chair of elastic strip.
Fig. 3 is existing a kind of structural representation with chair of elastic supporting pipe.
Fig. 4 is for being arranged with the schematic diagram of spring on the stay pipe among Fig. 3.
Fig. 5 (a) is the structural representation of back of the present utility model.
Fig. 5 (b) is the local enlarged diagram at torsion spring place among Fig. 5 (a).
Fig. 6 is the structural representation of a kind of chair of the present utility model.
Fig. 7 is the structural representation of decorative mat of the present utility model.
The specific embodiment
Figure 5 shows that the structural representation of back 1 of the present utility model.The vertical supporting bar 2 of described back frame both sides is designed to two joint 2a, 2b (obviously, also can be more than two joints, no longer illustrate at this), and two joint segmentation support bar 2a, the 2b of described each side of back frame link together by torsion spring 3.The end of the two ends of described torsion spring 3 and every joint segmentation support bar 2 welds together.Also be set with in length and breadth support bar 4 in the described back frame plane to constitute the human body back support.
As shown in Figure 6, a kind of chair that uses above-mentioned backrest 1 comprises seat support 5 and chair leg 6, and described backrest 1 is connected with seat support 5, and described chair leg 6 is connected with seat support 5.This chair can also comprise handrail 7, and described handrail 7 is connected with the both sides of seat support 5.
Fig. 7 is the structural representation of decorative mat 8 of the present utility model.The surface profile of described decorative mat 8 becomes streamlined.Preferably, described decorative mat 8 is integrally formed with backrest 1 and seat support 5.
More than the structure of the utility model one preferred embodiment is described in detail, this description is for exploitativeness of the present utility model is described.The utility model is with respect to the main improvement part of prior art, the vertical supporting bar of back frame both sides is designed to two joints or the above segmentation support bar of two joints, the torsion spring of segmentation support bar by internode that respectively save of described each side of back frame links together, concrete structure as for back frame, seat support, chair leg and handrail all belongs to prior art, and they should not constitute restriction of the present utility model.The utility model is with respect to another improvement part of prior art, and seat support is become dismountable connected mode with backrest, chair leg with handrail design.In a word, protection domain of the present utility model is as the criterion with claims.
Claims (8)
1. a back is characterized in that, the vertical supporting bar of described back frame both sides is made of two joints or the above segmentation support bar of two joints, and the torsion spring of segmentation support bar by internode that respectively save of described each side of back frame links together.
2. back as claimed in claim 1 is characterized in that the two ends of described torsion spring are welded on the segmentation support bar.
3. chair that uses above-mentioned backrest, comprise seat support and chair leg, it is characterized in that the vertical supporting bar of described back frame both sides is made of two joints or the above segmentation support bar of two joints, the torsion spring of segmentation support bar by internode that respectively save of described each side of back frame links together.
4. chair as claimed in claim 3 is characterized in that the two ends of described torsion spring are welded on the segmentation support bar.
5. chair as claimed in claim 3 is characterized in that described chair also comprises the handrail that is arranged on the seat support left and right sides.
6. chair as claimed in claim 3 is characterized in that the surface of described backrest and seat support is provided with decorative mat.
7. chair as claimed in claim 6 is characterized in that the surface profile of described decorative mat becomes streamlined.
8. as claim 6 or 7 described chairs, it is characterized in that described decorative mat and backrest and seat support are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520012445 CN2787077Y (en) | 2005-04-12 | 2005-04-12 | Chair backrest and chair using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520012445 CN2787077Y (en) | 2005-04-12 | 2005-04-12 | Chair backrest and chair using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2787077Y true CN2787077Y (en) | 2006-06-14 |
Family
ID=36785372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520012445 Expired - Fee Related CN2787077Y (en) | 2005-04-12 | 2005-04-12 | Chair backrest and chair using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2787077Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102783831A (en) * | 2012-08-23 | 2012-11-21 | 李玉青 | Elastic seat |
| CN107080384A (en) * | 2016-02-15 | 2017-08-22 | 英特施图尔办公室家具股份有限两合公司 | Backrest for office chair |
-
2005
- 2005-04-12 CN CN 200520012445 patent/CN2787077Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102783831A (en) * | 2012-08-23 | 2012-11-21 | 李玉青 | Elastic seat |
| CN102783831B (en) * | 2012-08-23 | 2015-02-04 | 汝绪飞 | Elastic seat |
| CN107080384A (en) * | 2016-02-15 | 2017-08-22 | 英特施图尔办公室家具股份有限两合公司 | Backrest for office chair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060614 Termination date: 20120412 |