CN101111408A - Lumbar support and method for the production thereof - Google Patents
Lumbar support and method for the production thereof Download PDFInfo
- Publication number
- CN101111408A CN101111408A CNA2005800475851A CN200580047585A CN101111408A CN 101111408 A CN101111408 A CN 101111408A CN A2005800475851 A CNA2005800475851 A CN A2005800475851A CN 200580047585 A CN200580047585 A CN 200580047585A CN 101111408 A CN101111408 A CN 101111408A
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- China
- Prior art keywords
- support device
- waist support
- longitudinal metal
- longitudinal
- metal lines
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
- B60N2/667—Lumbar supports having flexible support member bowed by applied forces
- B60N2/6671—Lumbar supports having flexible support member bowed by applied forces with cable actuators
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Seats For Vehicles (AREA)
Abstract
A lordosis support comprises two long sections (1,2) and many fingers of plastic support elements (6) injected onto and extending laterally across, between and above the long sections. An independent claim is also included for a seat comprising the above support.
Description
Technical field
The present invention relates to a kind of waist support device, particularly a kind of waist support device that is designed to be suspended in seat frame or the cushion frame and comprises the metal wool support, and the manufacture method that is used for this waist support device.
Background technology
Waist support device is used in the various back of seats, with lumbar vertebrae or the lumbar region of supporting seated person on the corresponding seat.And waist support device is used in the automobile seat especially, and is propped up by metal wool substantially and be configured to, and the metal wool support is suitable for strengthening the decoration of seat, but allows some flexible posture or bodily form to be suitable for each one.This metal wool support for example can comprise two longitudinal metal lines, and horizontal expansion has many transverse metal lines between the longitudinal metal line, and the end of transverse metal line is entangled on the longitudinal metal line and therefore is fastened to the longitudinal metal line.The diameter of longitudinal metal line is generally greater than the transverse metal line, and the metal wool support of Xing Chenging can be suspended in the seat frame by means of spring etc. like this.
And known a kind of harder waist support device has wherein used the lumbar support basket that is made of plastics usually, and the lumbar support basket is distortion to a certain extent only, and for example, the curvature of lumbar support basket can be adjusted by soft wire device etc.In addition, can be provided with automatically or the force transfering device of headrest initiatively by the transverse metal line, for example, make under the situation of motor vehicle accident, headrest was activated by the transmission of power by the transverse metal line and move on to optimal location in the very short time.For this headrest correctly activates, waist support device must have quite high hardness, and this can realize with the metal wool bracing means.For example, by riveting by means of plastic clip etc., waist support device can be attached to seat frame rigidly.
The manufacturing process of this relatively harder waist support device is described below.At first, by the plastic injection-moulded clip of making the lumbar support basket and being used to rivet.The guiding metal wool and being used to that is formed for the wire frame of waist support device activates initiatively, and the transverse metal line of headrest is bent and is provided with alternatively backguy or corresponding wire clamp, and by clamp fitting together, backguy is used for the sheet or the decoration of fastening corresponding seat rear side.Above-mentioned parts finally assembles soft wire or the control cord device of making waist support device and being provided with the curvature that allows adjusting lumbar support basket.
Yet aforementioned waist support device and corresponding manufacturing process have two basic problems.The first, waist support device needs the part or the parts of quite a lot of quantity, and the second, the assembling of waist support device is expensive.
From the another kind of as can be known waist support device of WO 03/092440 A1, two vertical poles are connected by the plastics cross-connecting apparatus that is injected on the vertical pole.Vertical pole preferably is made of metal and is provided with hook portion so that waist support device is suspended in the seat.The lumbar support basket and each cross bar that separate constitute integratedly, and cross bar and lumbar support basket can be made a step by plastic material by injection mold.But this known waist support device needs two vertical poles, a plurality of cross-connecting apparatus that is made of plastics altogether and also is the lumbar support basket that is made of plastics, thereby the quantity of parts is still more, and manufacturing cost is quite expensive.In addition, making this waist support device needs quite a large amount of plastic material, and this has increased manufacturing cost.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of waist support device, the particularly a kind of harder stayed surface or waist support device of support substrate of comprising, it is easy to make and is with low cost.In addition, the objective of the invention is to propose a kind of manufacture method that is suitable for this waist support device.
According to the present invention, the waist support device of the feature of this purpose by having claim 1 and the method for this waist support device of manufacturing with feature of claim 20 are achieved.Dependent claims limits preferred and favourable embodiment of the present invention respectively.
Waist support device according to the present invention comprises two a plurality of supporting members that are made of plastics of longitudinal metal line partial sum, supporting member is injected into that two longitudinal metal lines are partly gone up and laterally extending along waist support device between two longitudinal metal lines part, and outstanding with the finger-like side direction, along laterally surpassing two longitudinal metal line parts.These supporting members that constitute with the form of lumbar support fingers are alternatively with the back of seat trim supporting chair seated person, and pass through to limit the curvature of waist support device, thereby define support vertebra by longitudinal metal line part preposition.In addition, be used for activating the part power automatic or initiatively headrest that is provided with alternatively and put on system by supporting member.
Two longitudinal metal line parts can be made of the guiding metal wool of single respective curved, and the guiding metal wool makes elastomeric element of determining in wire frame or metal wool support and the elasticity that therefore produces be integrated on the guiding metal wool in the bending of waist support device lower area especially.Guiding also can be provided with suitable securing device on the metal wool---for example also to be the form of the binding clip that is made of plastics---and will guide metal wool or waist support device is fastened to seat frame.
For when making seat, use profile (profile) at the rear side of seat with sheet or decorate and can suitably be fastened in the backguy, one or more as supporting member along waist support device laterally or the Width backguy of extending can be injected on the longitudinal metal line partial sum guiding metal wool.Especially, backguy is of a size of and makes their laterally projecting above finger-like supporting member.For backguy being fastened on the longitudinal metal line partial sum guiding metal wool, can be provided with injection moulding encapsulation piece with the form of pin, it is outstanding backward and maintenance backguy from longitudinal metal line part.For example, the connecting device that is the form of clip can be arranged on each supporting member and be configured for seat electric heater plug, and these clips are made of plastics integratedly with corresponding supporting member especially.The seat builder can be put into seat electric heater plug on these clips then, and these clips are connected to again on the seat heating module.
Preferably, in the upper area of waist support device, the transverse metal line can be sealed with the injection moulding of guiding metal wool, this transverse metal line is coupled with the active head restraint systems, and under the situation of motor vehicle accident, be used for power is delivered to the active head restraint systems and is used for activating the function of initiatively resting the head on, be adjusted to the optimal location that is used for corresponding user so that therefore in the shortest time, will rest the head on accordingly.In this respect, the transverse metal line preferably is fastened to the guiding metal wool by means of thicker injection moulding encapsulation piece, and this injection moulding encapsulation piece can laterally extending between two longitudinal metal line parts of guiding metal wool along waist support device.
In order to prevent to slide on the guiding metal wool, the finger-like supporting member can be provided with the embossing part.In addition, to a certain extent, supporting member can be outwardly-bent and curling from the plane that is partly formed by guiding metal wool and longitudinal metal line, especially forms from the outside bossing in aforementioned plane in each supporting member between two longitudinal metal line parts.
In principle, according to waist support device of the present invention therefore only needs can be provided with transverse metal line and backguy etc. in addition as the guiding metal wool of metal wire member.The remaining part of waist support device preferably all is made of plastics, clip and binding clip that this especially is applied to finger-like supporting member, the connecting device between transverse metal line and backguy and guiding metal wool and is used for seat electric heater plug.All plastic partss can be injected in single step on the guiding metal wool, and at the embodiment with the clip that is used for seat electric heater plug, for example the cable storing apparatus with forms such as holding devices also can be configured on the respective support elements integratedly.
Generally speaking, can be simply according to waist support device of the present invention and cost make cheaply.In order to make, only require the guiding metal wool to curve required form, next all plastic components can be injected in single step on the guiding metal wool by means of corresponding injection mold.
The present invention preferably is applied in the waist support device that is used for automobile seat, but the present invention is not limited to this preferred application, but can be widely used in the seat of any kind.
Description of drawings
By means of preferred implementation the present invention is described in more detail below with reference to accompanying drawings, wherein:
Fig. 1 illustrates the back view according to the waist support device of first embodiment of the invention,
Fig. 2 illustrates the front elevation of the waist support device of Fig. 1,
Fig. 3 roughly illustrates the possible fastening means in seat frame of the waist support device shown in Fig. 1 and Fig. 2,
Fig. 4 illustrates the back view according to the waist support device of second embodiment of the invention, and
Fig. 5 roughly illustrates the possible fastening means in seat frame of the waist support device shown in Fig. 4.
The specific embodiment
With reference to Fig. 1-Fig. 3 first embodiment of the present invention is described below.
Waist support device comprises metal wool support or wire frame, and it is formed by crooked in a suitable manner guiding metal wool 4.Thereby guiding metal wool 3 forms the first longitudinal metal line part 1 and the second longitudinal metal line parts 2, and they are longitudinal extension and perpendicular to waist support device substantially in parallel to each other.In the waist support device lower end, 4 bendings of guiding metal wool make it extend to the second longitudinal metal line part 2 from the first longitudinal metal line part 1, obtain guiding the elastomeric element 3 of the one in the metal wool 4 simultaneously, this elastomeric element provides a certain amount of flexible and elasticity to waist support device.Especially, the crooked guiding metal wool 4 that makes at first stretches out from the first longitudinal metal line part 1 guiding metal wool 4 in the waist support device lower end, next replication, and be basically parallel to guiding metal wool 4 bandy parts then and extend to the second longitudinal metal line part 2, herein, guide the crooked and extension of mode of the sweep of metal wool 4 to be symmetrical in the first longitudinal metal line part, 1 lower end substantially.The connecting device that leads to the second longitudinal metal line part 2 from the first longitudinal metal line part 1, therefore be arranged essentially parallel to that the sweep that comes out from vertical leader 1 and 2 extends and with they in same plane, make this connecting device mobile a little backward with respect to the plane that forms by longitudinal metal line part 1 and 2.In addition, this connecting device comprises the binding clip that is made of plastics and is molded on the guiding metal wool 4, is fastened to seat frame (not shown among Fig. 1 and Fig. 2) will guide metal wool 4 and waist support device.
In example illustrated in figures 1 and 2, be provided with the lateral support member 6 of six finger-like altogether, they are formed for sitting in the stayed surface at the people back on the corresponding seat, and supporting member 6 is fastened to longitudinal metal line part 1,2 by the injection moulding encapsulation piece and is made of plastics.And supporting member 6 comprises embossing part 7, and embossing part 7 prevents that corresponding supporting member 6 from sliding on the longitudinal metal line part 1,2 and on the guiding metal wool 4.
Can find out that from Fig. 1 and Fig. 2 supporting member 6 slight curvatures or change are curved, particularly the zone between longitudinal metal line part 1,2 can constitute backward projection or sweep.
In embodiment illustrated in figures 1 and 2, first backguy 8 is arranged in the upper area of waist support device, and it also extends transverse to waist support device and is used for fastening seat cover or seat trim.In illustrated embodiment, backguy 8 side direction are outstanding to be surpassed finger-like supporting member 6 and is attached to two longitudinal metal line parts 1,2 by means of the injection moulding encapsulation piece 9 that is made of plastics, and injection moulding encapsulation piece 9 constitutes integratedly with supporting member 6 topmost especially.In addition, be provided with second backguy 10 at the lower area of waist support device, it is similar to backguy 8 and constitutes and also be fastened to two longitudinal metal line parts 1,2 and guiding metal wool 4.Yet for this reason, two longitudinal metal line parts 1,2 are provided with the pin that plastics are made, injection moulding encapsulation piece between two minimum supporting members 6 of described pin formation waist support device, and be formed in integratedly on the guiding metal wool part 1,2 with them, and outstanding backward therefrom, the backguy 10 that therefore is arranged on the rear portion is kept by pin.
In the waist support device upper end, transverse metal line 12 is attached to guiding metal wool 4 by injection moulding encapsulation piece 13, and injection moulding encapsulation piece 13 laterally extends between two longitudinal metal line parts 1,2.Transverse metal line 12 is used for activating actv. or rests the head on automatically when being integrated into corresponding automobile seat, under the situation of motor vehicle accident, the power that is applied on the waist support device by the user passes to the active head restraint systems to activate headrest by transverse metal line 12, and therefore headrest is automatically moved to optimal location to hold the head of corresponding human.
In the waist support device shown in Fig. 1 and Fig. 2, the curvature of waist support device is produced by the profile of guiding metal wool 4 and longitudinal metal line part 1,2 thereof, for the curvature to waist support device is carried out suitable adjusting, the regulating mechanism of suitable, for example soft wire or control cord form can be set, and it acts at least one vertical end parts of waist support device.
Therefore, waist support device comprises guiding metal wool 4, backguy 8,10 and the transverse metal line 12 as metal wire member.In addition, waist support device comprises finger-like supporting member 6 as plastic parts, be used for backguy 8,10 be connected to guiding metal wool 4 injection moulding encapsulation piece 9,11, be used for transverse metal line 12 is connected to the injection moulding encapsulation piece 13 and the binding clip 5 of guiding metal wool 4, all plastic partss can be injected in single step on the guiding metal wool 4 by means of suitable injection mold.
Fig. 3 illustrates the possible integration mode in seat frame 14 of the waist support device shown in Fig. 1 and Fig. 2, and shown waist support device is similar to Fig. 2 and illustrates with front elevation.As can be seen from Figure 3, the lower end of waist support device is attached to seat frame 14 by binding clip 5, and transverse metal line 12 is coupled to mechanism 15 to activate automatically or the actv. headrest simultaneously.
Fig. 4 illustrates the back view according to the waist support device of second embodiment of the invention, is provided with identical Reference numeral with the corresponding parts of the parts of Fig. 1-3, and the following difference that only describes in detail with Fig. 1-3 illustrated embodiment.
Backguy is not set in the embodiment shown in Figure 4.And the embodiment shown in Fig. 4 comprises the clip 16 that is used for seat electric heater plug, and it is made of plastics and constructs integratedly with two lower horizontal finger-like supporting members 6.Seat electric heater plug to these clips 16 to be attached is connected to corresponding seat heating module.Minimum supporting member 6 comprises the device 17 that is used to hold corresponding cable, cable is connected to the seat heating module with seat electric heater plug, and this line storing apparatus 17 can be especially constitutes with the form of minimum supporting member 6 inner fovea parts makes cable can be directed to the clip 16 of each plug by supporting member 6.The embodiment of holding device form etc. also is possible.
Fig. 5 illustrates waist support device shown in Figure 4 possible integration mode in the seat frame 14 of seat, especially automobile seat, can be with reference to the description of Fig. 3.
Claims (24)
1. waist support device comprises:
First longitudinal metal line part (1) and second longitudinal metal line part (2), and
A plurality of supporting members that are made of plastics (6), they are injected on the described first and second longitudinal metal lines parts (1,2), along waist support device laterally between described first and second longitudinal metal lines parts (1,2), extend and along described waist support device laterally with the outstanding described first and second longitudinal metal lines parts (1,2) that surpass of mode side direction of finger-like.
2. waist support device as claimed in claim 1 is characterized in that,
Described first and second longitudinal metal lines parts (1,2) are formed by single correspondingly metal wire bent (4).
3. waist support device as claimed in claim 2 is characterized in that,
Described metal wire bent (4) is integrated with elastomeric element (3).
4. waist support device as claimed in claim 3 is characterized in that,
Described elastic part (3) is formed by at least one sweep of described metal wool (4).
5. each described waist support device in the claim as described above is characterized in that,
Described waist support device comprises that securing device (5) is to be fastened to described waist support device seat frame (14).
6. as each described waist support device in claim 5 and 2 to 4, it is characterized in that,
Described securing device is by plastic injection-moulded bottom to described metal wire bent (4).
7. each described waist support device in the claim as described above is characterized in that,
Described waist support device comprise at least one along the metal wool (8,10) of the horizontal expansion of described waist support device with fastening seat trim or seat cover.
8. waist support device as claimed in claim 7 is characterized in that,
Described at least one metal wool (8,10) is fastened to described first and second longitudinal metal lines parts (1,2) by the injection moulding encapsulation piece (9,11) that is made of plastics.
9. waist support device as claimed in claim 8 is characterized in that,
Described injection moulding encapsulation piece is outstanding from described first and second longitudinal metal lines parts (1,2) with the form of pin shape.
10. as each described waist support device in the claim 7 to 9, it is characterized in that,
Be provided with at least two metal wools (8,10) with fastening seat trim or seat cover along the horizontal expansion of described waist support device, first metal wool (8) is attached to described first and second longitudinal metal lines parts (1,2) at the upper area of described waist support device, and second metal wool (10) is attached to described first and second longitudinal metal lines parts (1,2) at the lower area of described waist support device.
11. each described waist support device in the claim is characterized in that as described above,
Be attached to described first and second longitudinal metal lines parts (1,2) along at least one metal wool (12) of the horizontal expansion of described waist support device and be used for automatically activating headrest.
12. waist support device as claimed in claim 11 is characterized in that,
Described at least one metal wool that is used for automatically activating headrest is attached to described first and second longitudinal metal lines parts (1,2) by at least one injection moulding encapsulation piece that is made of plastics in described waist support device upper area.
13. waist support device as claimed in claim 12 is characterized in that,
Described at least one injection moulding encapsulation piece (13) extends to described second longitudinal metal line part (2) from described first longitudinal metal line part (1) transverse to described waist support device.
14. as the described waist support device of claim 11 to 13, it is characterized in that,
Described at least one metal wool (12) that is used for automatically activating headrest extends outwardly beyond supporting member (6) transverse to described waist support device.
15. each described waist support device in the claim is characterized in that as described above,
At least one supporting member (6) is provided with the connecting device (16) that is used for seat electric heater plug.
16. waist support device as claimed in claim 15 is characterized in that,
Described connecting device (16) is made of plastics, and constitutes integratedly with corresponding supporting member (6).
17. each described waist support device in the claim is characterized in that as described above,
On at least one supporting member (6), be configured with the cable storing apparatus (17) that is used to hold cable.
18. each described waist support device in the claim is characterized in that as described above,
Described supporting member (6) is provided with embossing part (7) and slides to prevent that it from going up in described first and second longitudinal metal lines parts (1,2).
19. a seat comprises
Seat frame (14); And
Be installed in each described waist support device in the claim as described above in the described seat frame (14).
20. a method of making waist support device may further comprise the steps:
Prepare substantially along the first longitudinal metal line part (1) of the longitudinal extension of waist support device and the second longitudinal metal line partly (2), and
A plurality of supporting members that are made of plastics (6) are injected on the described first and second longitudinal metal lines parts (1,2), make described supporting member (6) between described first and second longitudinal metal lines parts (1,2), extend transverse to described waist support device, and outstanding above described first and second longitudinal metal lines parts (1,2) transverse to described waist support device with finger-like mode side direction.
21. method as claimed in claim 20 is characterized in that,
In order to constitute described first and second longitudinal metal lines parts (1,2), described first and second longitudinal metal lines parts (1,2) are set by the single metal wool of bending (4).
22. as claim 20 or 21 described methods, it is characterized in that,
At least one metal wool (8,10) that extends transverse to described waist support device is attached to described first and second longitudinal metal lines parts (1,2) with fastening seat cover or seat trim by the injection moulding encapsulation piece (9,11) that is made of plastics.
23. as each described method in the claim 20 to 22, it is characterized in that,
At least one metal wool (12) transverse to described waist support device extension is attached to described first and second longitudinal metal lines parts (1,2) by at least one injection moulding encapsulation piece (13) that is made of plastics and is used for automatically activating headrest.
24. as each described method in the claim 20 to 23, it is characterized in that,
Each carries out according to claim 1-18 to be used for making the described method of waist support device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200520001624 DE202005001624U1 (en) | 2005-02-02 | 2005-02-02 | Lordosis support for a seat especially in a motor vehicle has two long sections with fingers of plastic sections extending across between and beyond them |
| DE102005004758.0 | 2005-02-02 | ||
| DE202005001624.1 | 2005-02-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101111408A true CN101111408A (en) | 2008-01-23 |
| CN100534832C CN100534832C (en) | 2009-09-02 |
Family
ID=34429152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800475851A Active CN100534832C (en) | 2005-02-02 | 2005-12-21 | Lumbar support and preparation method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100534832C (en) |
| DE (1) | DE202005001624U1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079259A (en) * | 2011-01-21 | 2011-06-01 | 金文哲 | Steel wire hanging device for vehicle seat and manufacturing method thereof |
| CN104276069A (en) * | 2013-07-01 | 2015-01-14 | 福特全球技术公司 | Seat with integrated trim assembly and storage bin |
| CN106880204A (en) * | 2015-12-16 | 2017-06-23 | 有限会社爱琳彩 | Radial type chair |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006030065B4 (en) * | 2006-06-28 | 2010-07-15 | Faurecia Autositze Gmbh | Headrest for a vehicle seat |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2316604B (en) * | 1996-08-23 | 1998-10-14 | Youngflex Ag | Improved seat suspension arrangement and adjustment mechanism therefor |
| GB2342286B (en) * | 1998-10-02 | 2001-05-09 | Youngflex Ag | Improvements in or relating to seat suspension arrangements |
| JP4182592B2 (en) * | 1999-06-11 | 2008-11-19 | マツダ株式会社 | Seat back structure |
| US6652028B2 (en) * | 2001-11-02 | 2003-11-25 | L & P Property Management | Apparatus and method for lumbar support with variable apex |
| DE10220028B4 (en) * | 2002-05-04 | 2011-07-28 | Schwarzbich, Jörg, 33607 | Seat insert and method for its manufacture |
| DE10322690A1 (en) * | 2003-05-20 | 2004-12-16 | Fico Cables, Lda. | Support component of a seat |
-
2005
- 2005-02-02 DE DE200520001624 patent/DE202005001624U1/en not_active Expired - Lifetime
- 2005-12-21 CN CNB2005800475851A patent/CN100534832C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079259A (en) * | 2011-01-21 | 2011-06-01 | 金文哲 | Steel wire hanging device for vehicle seat and manufacturing method thereof |
| CN104276069A (en) * | 2013-07-01 | 2015-01-14 | 福特全球技术公司 | Seat with integrated trim assembly and storage bin |
| CN104276069B (en) * | 2013-07-01 | 2018-04-13 | 福特全球技术公司 | Seat with integrated decoration assembly and storage bin |
| CN106880204A (en) * | 2015-12-16 | 2017-06-23 | 有限会社爱琳彩 | Radial type chair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100534832C (en) | 2009-09-02 |
| DE202005001624U1 (en) | 2005-04-07 |
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