CN101708699B - Car seat back skeleton - Google Patents
Car seat back skeleton Download PDFInfo
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- CN101708699B CN101708699B CN2009101994831A CN200910199483A CN101708699B CN 101708699 B CN101708699 B CN 101708699B CN 2009101994831 A CN2009101994831 A CN 2009101994831A CN 200910199483 A CN200910199483 A CN 200910199483A CN 101708699 B CN101708699 B CN 101708699B
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- skeleton
- seat back
- car seat
- shell
- back frame
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Abstract
The invention provides a plastic car seat back skeleton which is made from plastic material through one-step forming and is provided with a shell extending along the circumference, wherein the lateral section of the shell is n-shaped, the inside of the shell with the n-shaped section is provided with honeycomb reinforcing ribs; the position which bears larger stress, of the shell with the n-shaped section has larger thickness; and the honeycomb reinforcing ribs on the whole skeleton can have different height and/or thickness. The car seat back skeleton of the invention is made from plastic instead of metal so that the weight of the car seat back skeleton can be greatly reduced; in addition, the corrosion resistant of the plastic material is better so as to prolong the service life of the product.
Description
Technical field
The present invention relates to a kind of automotive seat, specifically, relate to a kind of car seat back frame.
Background technology
The employed backrest skeleton overwhelming majority of automobile chair in the market is the metal backrest, and its deficiency mainly shows as: (1), complicated and loaded down with trivial details serious its whole chair art shapes of restriction of manufacturing process can not well adapt to the environmental requirement of vehicle body; (2), the manufacturing procedure complexity, in whole process of production, nearly tens procedures bring certain difficulty for processing and manufacturing and management; (3), one-piece parts is heavier, is difficult to meet the call of requirement of car load weight-saving and national energy-saving and emission-reduction; (4), the energy resource consumption aspect, produce raw materials for plastics production than producing raw material metal and can save the more energy, more than not enough, promoted the designed concept of new material, new process substituted metal.
As depicted in figs. 1 and 2, existing metal backrest skeleton 1 comprises: backrest upper junction plate 11, backrest lower connecting plate 12, backrest left side board 13, backrest right side board 14 and other metal parts.Each parts all will be finished by multiple working procedure manufacturings such as blanking, bending, punchings.Need how secondary mould, a plurality of stations are set, spend more man-hour.Each parts also will connect by welding or riveted joint, still need frock clamp in welding or riveted joint process.Expend the large number quipments and the energy.Simultaneously, because of multi-part, multiple operation production tolerance's accumulative total will make the production tolerance of backrest frame assembly can be bigger.
But because the energy absorption capacity of plastic material is poor, the weakness of stressed sclerosis, directly adopt plastic shaping and the identical or close seat back-rest framework of existing metal pedestal chair back skeleton structure, it can not reach the static strength and the impact strength of seat, can't bear huge impact.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of car seat back frame of plastic material, has broken through the constraint of original metallic framework, utilizes special structural design to improve plastics performance, makes plastics substituted metal in seat back-rest framework become possibility.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of car seat back frame, described skeleton is integrated by plastic material, and described skeleton has the shell that circumferentially extends along it, and the lateral cross section of described shell is " n " shape, and the inboard of the shell of described n tee section has cellular reinforced rib.
The material of described backrest skeleton is PA66+GF or PP+GF.
Described skeleton is injection mo(u)lding or hot-forming.
The thickness of described shell changes, at the stressed larger part of skeleton more than or equal to the stressed smaller part of skeleton.The thickness of described shell is 2-5mm.
Described cellular reinforced rib can have differing heights and/or different-thickness along whole skeleton.In the stressed big position of described skeleton, the thickness and/or the width of described honeycomb reinforced rib are bigger; In the stressed little position of described skeleton, the thickness and/or the width of described honeycomb reinforced rib are less.The height of described cellular reinforced rib is 15-60mm.Described cellular reinforced rib forms regular hexagon, and with described shell be that injection mo(u)lding is integral.
Insert moulding is adopted in the junction of described backrest skeleton and recliner, will be used for fusing with two nuts of recliner upper junction plate bonded assembly, is injection molded into one as inserts and plastic skeleton.
Also be integrated with the sleeve portion of headrest guide pin bushing on the described skeleton.
What seat back-rest framework of the present invention used is plastic material, and plastics replace metal, make the weight of seat back-rest framework reduce greatly, and plastic material is than metallic material withstanding corrosion more, thereby has prolonged service life.Frame design becomes to have the shell of " n " font cross-sectional plane, can increase structural strength, the flow property of material when improving injection moulding.And the cellular reinforced rib reinforced rib of other shapes relatively has better intensity.And operation is simple, only need to realize complex-shaped backrest skeleton once secondary mould single injection-molded, a large amount of parts is combined into one, significantly reduce the expense of specialized equipment and production tooling, reduced production process, saving labour power, shortening production cycle, the saving productive costs of skeleton.Simultaneously, seat back-rest framework of the present invention also has aesthetic property, and is ornamental.
Description of drawings
Fig. 1 is the structural representation of existing metal automobile seat back-rest framework;
Fig. 2 is the exploded drawings of existing metal automobile seat back-rest framework;
Fig. 3 is the block diagram of plastic automotive seat back-rest framework of the present invention;
Fig. 4 is the front view of plastic automotive seat back-rest framework of the present invention;
Fig. 4 A is the A-A line cutaway view of plastic automotive seat back-rest framework shown in Figure 4;
Fig. 4 B is the B-B line cutaway view of plastic automotive seat back-rest framework shown in Figure 4;
Fig. 5 is the decomposing schematic representation of seat back-rest framework of the present invention;
Fig. 6 is the back view after plastic automotive seat back-rest framework of the present invention coats foaming layer;
Fig. 7 is a plastic automotive seat back-rest framework shown in Figure 6 cutaway view along the D-D line;
Fig. 8 is a plastic automotive seat back-rest framework shown in Figure 6 cutaway view along the E-E line;
Fig. 9 is the scheme drawing of plastic automotive seat back-rest framework of the present invention and recliner coupled condition;
Figure 10 is the exploded drawings of plastic automotive seat back-rest framework of the present invention and recliner coupled condition;
Figure 11 is the partial schematic diagram of the integrated guide pin bushing sleeve pipe of plastic automotive seat back-rest framework of the present invention;
Figure 12 is the FEA Static Strength Analysis result schematic diagram of seat back-rest framework of the present invention.
The specific embodiment:
Referring to Fig. 3-12, car seat back frame 2 of the present invention has substituted original product that combines by a plurality of metal pieces with the plastic product of an injection moulding or injection-compression molding.Optimized the processing technology of virgin metal skeleton greatly, and broken through the constraint of original metallic framework, allowed whole seat under platform, had the comfort property of better appearance and whole chair by the plastic seat skeleton.
What backrest skeleton 2 of the present invention used is plastic material, and the density of the back of seat of plastic material is little more a lot of than metallic material usually, and plastics replace metal, make the weight of seat back-rest framework reduce greatly.New product material of the present invention is selected flexibly, and the material that intensity and toughness can make skeleton satisfy laws and regulations requirement can be selected, for example PA66+GF, or PP+GF.About the heavy 2.50kg of plain metal skeleton, and the deficiency in weight 2.0kg of present design-calculated plastic skeleton.And plastic material is than metallic material withstanding corrosion more, thereby prolonged service life.
Shown in Fig. 3-5, described seat back-rest framework 2 is made up of the shell 4 and the cellular interior muscle 3 of " n " tee section.The Cross-section Design of the shell 4 of whole skeleton 2 becomes " n " font, the flow property of material in the time of can increasing structural strength and improve injection moulding.According to different OEM vendors and different project demands, and the selection difference, the thickness " T " of " n " tee section does not wait from 2 millimeters to 5 millimeters.Thickness on most areas of shell is uniformly, has only the stressed larger part of the demanding skeleton of local strength to adopt bigger thickness.With the selection is that PA66+40%GF is an example, and we can select 3 millimeters outer casing thickness, and the position (see figure 4) adopts 4 millimeters thickness near attachment point, can reach the requirement of strength of 2500N.M.
Among the present invention, designed cellular reinforced rib 3 to strengthen the intensity of injection moulding skeleton.Shown in Fig. 4 A, the inboard of the n tee section shell 4 of described skeleton 2 has the cellular reinforced rib 3 of differing heights and different-thickness.The cellular reinforced rib reinforced rib of other shapes relatively has better intensity.In the present embodiment, cellular reinforced rib forms regular hexagon, that is to say, the formed honeycomb hole of reinforced rib is the hole of positive six shapes, and with the inboard of described reinforced rib and described shell be one, promptly as shown in Figure 4 and Figure 5, two crossing reinforced ribs fuse at the sidewall and the shell of the n of shell tee section, and so cellular reinforced rib 3 has better compressive strength and bending resistance.
The radical function of seat back-rest framework is a support loads, and automobile chair frame not only will have certain static strength, also certain strength under shock will be arranged.Analyze according to FEA, backrest is gone up at various height, the force request difference.The closer to attachment point, the moment of torsion that is subjected to is big more, considers simultaneously to form stress concentration easily at bending part.So we are at the different Position Design differing heights and the honeycomb reinforced rib of different-thickness.Make whole skeleton powerful in main stressed position and stress concentration positional structure.In the stressed big position of described skeleton, the thickness and the width of described honeycomb reinforced rib are bigger; In the stressed little position of described skeleton, the thickness and the width of described honeycomb reinforced rib are less, it is even relatively that whole skeleton is out of shape when stressed, thickness W1, the W2 of reinforced rib shown in Fig. 4 A, W3, W4 numerical value lattice are inequality, with selection (PA66+40%GF) is example, stressed concentrated angle position reinforced rib thickness is 2 millimeters in the skeleton use, and stressed bigger position reinforced rib thickness is 3 millimeters near the attachment point, and other stressed mild relatively regional reinforced rib thickness are 1.5 millimeters.Height L1, the L2 of reinforced rib shown in the section drawing 4B, L3 do not wait from 15 millimeters to 60 millimeters.
Design plan of the present invention is by FEA Static Strength Analysis and crash analysis, and the yield strength of backrest reaches more than the 2500N.M as shown in figure 11, satisfies customer requirement.
Extremely shown in Figure 8 as Fig. 6, described plastic seat backrest skeleton 2 smooth surfaces, the curved surface that contacts with human body is pressed close to human body comfort requirement design according to human engineering.Consider from material behavior and traveling comfort two aspects, backrest skeleton 2 of the present invention is all big than metallic framework from the volume and on the area, therefore also just big with foaming layer 5 area of contact than metallic framework, curved surface itself is just more pressed close to the traveling comfort requirement of human body, so the thickness of foaming layer 5 can attenuate, increase the foaming Design freedom, reduced foaming weight, saved the foaming cost.
Described backrest skeleton 2 adopts bolted connection with recliner 6 junctions.Because the material that backrest internal frame of the present invention uses is plastics, hardness and intensity and metal be difference to some extent.Directly make bolt together make the crack at edge of connecting bore easily, therefore designed insert moulding in the junction of skeleton and recliner, (insert molding) fuses two nuts, is injection molded into one as inserts and plastic skeleton.Be used for being connected, as Fig. 9 and shown in Figure 10 with the recliner upper junction plate.Two nuts are made of one and can prevent that nut from rotating around the nut line of centers in plastic bodies.The formability of plastics, bendability and metallo-rigidity, Strong degree and stable on heating mutual combination replenish and make complicated exquisite metallo-plastic integration product solidly.
In addition, among the present invention, with the headrest guide pin bushing 7 sleeve portion be integrated on the backrest skeleton 2.On the metallic framework be by the guide pin bushing sleeve pipe of will resting the head on as assembly parts, be assemblied on the skeleton, as Figure 11.The not firm generation of excuse pillow guide pin bushing assembling appears in headrest guide pin bushing and metallic framework assembling often rocks and noise, and the guide pin bushing of resting the head on problem such as is cut by metallic framework.And during the whole chair project of the frame design that adopts back of seat of the present invention, as long as the upper cover part of design headrest guide pin bushing.Part design and die cost have been saved.The more important thing is that headrest guide pin bushing 7 is made of one with skeleton, can determine the relative position of guide pin bushing 7 and skeleton 2 more accurately, avoided assembling defectives such as rocking of may occurring, abnormal sound.
Described seat back-rest framework 2 can or hot-formingly can be finished processing with plastic processing injection mo(u)lding commonly used.Only need to realize complex-shaped backrest skeleton once secondary mould single injection-molded, a large amount of parts is combined into one, significantly reduce the expense of specialized equipment and production tooling, reduced production process, saving labour power, shortening production cycle, the saving productive costs of skeleton.Simultaneously, subsequent operations such as purchase, detection, storage, credit requirement have been reduced.The more important thing is that the manufacture deviation of whole backrest skeleton can strict control.
Automotive seat backrest frames of the present invention changes the present situation that working of plastics can only substitute common and stressed little metal parts. By new structural design, improve that the plastics energy-absorbing is poor, the weakness of stressed sclerosis, make it when bearing huge impact, also can surpass the performance of metal, make plastics become possibility at the chair framework substituted metal. Backrest frames of the present invention also has aesthetic property, ornamental effect. For integrated form backrest skeleton, expose if having surface cover and foaming to coat incomplete part, can carry out painted, surperficial dermatoglyph to plastic raw materials and process, even the surface treatment such as local chromium plating is to reach desirable vision and to touch effect. It is can save the energy and promote environmental protection that backrest frames of the present invention also has an advantage. A lot of plastic process can perhaps almost completely be reused material fully, seldom produce or do not produce waste material, just can a large amount of resource of corresponding saving.
Claims (10)
1. car seat back frame, it is characterized in that described skeleton is integrated by plastic material, and described skeleton has the shell that circumferentially extends along it, the lateral cross section of described shell is " n " shape, and the inboard of the shell of described n tee section has cellular reinforced rib.
2. car seat back frame according to claim 1 is characterized in that, the material of described skeleton is PA66+GF or PP+GF.
3. car seat back frame according to claim 1 is characterized in that, at the thickness of the shell of the stressed larger part of the skeleton thickness more than or equal to the shell of the stressed smaller part of skeleton.
4. car seat back frame according to claim 3 is characterized in that the thickness of described shell is 2-5mm.
5. according to each described car seat back frame of claim 1-4, it is characterized in that described cellular reinforced rib upwards has differing heights and/or different-thickness along whole skeleton week.
6. car seat back frame according to claim 5 is characterized in that, in the stressed big position of described skeleton, the thickness and/or the width of described honeycomb reinforced rib are bigger; In the stressed little position of described skeleton, the thickness and/or the width of described honeycomb reinforced rib are less.
7. car seat back frame according to claim 6 is characterized in that the height of described cellular reinforced rib is 15-60mm.
8. car seat back frame according to claim 7 is characterized in that, described cellular reinforced rib forms regular hexagon, and is shaped to one with described shell.
9. car seat back frame according to claim 1, it is characterized in that, insert moulding is adopted in the junction of described backrest skeleton and recliner, will be used for fusing with two nuts of recliner upper junction plate bonded assembly, is injection molded into one as inserts and plastic skeleton.
10. car seat back frame according to claim 1 is characterized in that, also is integrated with the sleeve portion of headrest guide pin bushing on the described skeleton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101994831A CN101708699B (en) | 2009-11-27 | 2009-11-27 | Car seat back skeleton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101994831A CN101708699B (en) | 2009-11-27 | 2009-11-27 | Car seat back skeleton |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101708699A CN101708699A (en) | 2010-05-19 |
| CN101708699B true CN101708699B (en) | 2011-05-11 |
Family
ID=42401511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101994831A Expired - Fee Related CN101708699B (en) | 2009-11-27 | 2009-11-27 | Car seat back skeleton |
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| Country | Link |
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| CN (1) | CN101708699B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760526A (en) * | 2014-01-08 | 2015-07-08 | 郑州翎羽新材料有限公司 | Seat backrest skeleton of intercity bus |
| CN204659524U (en) * | 2014-01-08 | 2015-09-23 | 郑州翎羽新材料有限公司 | A kind of cushion frame |
| CN104015644A (en) * | 2014-06-11 | 2014-09-03 | 重庆延锋江森汽车部件系统有限公司 | Automobile seat skeleton |
| CN106218469A (en) * | 2016-08-30 | 2016-12-14 | 郑州翎羽新材料有限公司 | A kind of chair framework and preparation method thereof |
| CN108284775B (en) * | 2018-01-30 | 2023-08-29 | 重庆博奥镁铝金属制造有限公司 | Automobile seat backrest framework structure |
| CN109606224B (en) * | 2018-12-03 | 2023-10-20 | 广汽零部件有限公司 | Lightweight unequal-thickness automobile co-driver seat skeleton seat cushion side plate and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1167465A (en) * | 1994-11-30 | 1997-12-10 | 巴特尚道汽车座椅有限公司 | Seat, in particular a seat for public-transport vehicles |
| CN2640826Y (en) * | 2003-09-09 | 2004-09-15 | 常州美进泰克金属制品有限公司 | Bus seats |
| JP2007008272A (en) * | 2005-06-29 | 2007-01-18 | Asahi Tec Corp | Seat frame |
| CN201158323Y (en) * | 2008-01-31 | 2008-12-03 | 重庆延锋江森座椅有限公司 | Automobile seat framework |
| WO2009010256A1 (en) * | 2007-07-18 | 2009-01-22 | Johnson Controls Gmbh | Structure for a vehicle seat |
-
2009
- 2009-11-27 CN CN2009101994831A patent/CN101708699B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1167465A (en) * | 1994-11-30 | 1997-12-10 | 巴特尚道汽车座椅有限公司 | Seat, in particular a seat for public-transport vehicles |
| CN2640826Y (en) * | 2003-09-09 | 2004-09-15 | 常州美进泰克金属制品有限公司 | Bus seats |
| JP2007008272A (en) * | 2005-06-29 | 2007-01-18 | Asahi Tec Corp | Seat frame |
| WO2009010256A1 (en) * | 2007-07-18 | 2009-01-22 | Johnson Controls Gmbh | Structure for a vehicle seat |
| CN201158323Y (en) * | 2008-01-31 | 2008-12-03 | 重庆延锋江森座椅有限公司 | Automobile seat framework |
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| Publication number | Publication date |
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| CN101708699A (en) | 2010-05-19 |
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Address after: Kang Road, Pudong New Area Kangqiao Industrial Zone of Shanghai City, No. 669, 201315 Patentee after: Yanfeng Daotuo Ann seat Co. Address before: Shanghai City, Pudong New Area Kang Road 201315 Pudong Kangqiao Industrial Zone No. 669 Patentee before: Shanghai Yanfeng Johnson Controls Seating Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20191127 |