CN101243926A - Back support device of chair - Google Patents
Back support device of chair Download PDFInfo
- Publication number
- CN101243926A CN101243926A CNA2007100793766A CN200710079376A CN101243926A CN 101243926 A CN101243926 A CN 101243926A CN A2007100793766 A CNA2007100793766 A CN A2007100793766A CN 200710079376 A CN200710079376 A CN 200710079376A CN 101243926 A CN101243926 A CN 101243926A
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- China
- Prior art keywords
- support device
- back support
- connector
- backboards
- horizontal 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.)
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- 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
- A47C7/405—Support for the head or the back for the back with double backrests
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- 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
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks
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- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The invention relates to a chair rear support device, which is capable of supporting user back part according with the power of human system, comprising a vertical frame positioned vertically on the base, and arranged on the rear surface of the base; a horizontal frame positioned on the vertical frame; a first and second backboards, which are arranged on the left and right side of the horizontal frame corresponding to the center of the horizontal frame respectively; a first elastic and a second elastic connecting units, which are positioned between the left side of the horizontal frame and the first backboard, and the right side of the vertical frame and the second backboard respectively, and providing elastic to the first and second backboards respectively.
Description
Technical field
The present invention relates to chair.More specifically, the present invention relates to meet the back support device that ergometrice ground supports the chair at user back.
Background technology
Usually, chair comprises the seat portion that supports user's buttocks and is vertically set on the backboard of the rear surface of a portion with support user back.
In addition, in order cosily to support the user back, the tilting gearing that backboard is tilted is installed in the lower end of the portion of can further being present.Since the upper end of backboard relatively its lower end forward or backward direction tilt, so when the user stretched his hand or tilt his back, backboard was mobile automatically, so chair can cosily support the user back.
Yet this traditional chair has following problem.
When the user is sitting in several hrs in the portion, the user can feel his spinal pain.Because backbone is more outstanding than the other parts at back, so when the back contacted the front surface of backboard, described backbone was compared with the other parts at back, is subjected to greater role power.
Therefore, because pressure concentrates on backbone, when the user keeps this kind status number hour in office or reading room, he can feel spinal pain.
More than just be used to strengthen understanding in the disclosed information of background parts to background of the present invention, so it can comprise the information that does not constitute prior art, described prior art is that those of ordinary skills are known in this country.
Summary of the invention
The present invention is devoted to provide the back support device of chair, and described chair has can meet the advantage that ergometrice ground supports the user back.
Back support device according to the chair of the embodiment of the invention comprises: vertical frame, and it vertically is arranged at a portion, and is provided with on the rear surface of present portion; Horizontal frame, it is installed on the described vertical frame; First and second backboards, its center with respect to described horizontal frame is separately positioned on the left and right sides of described horizontal frame; With the first and second elasticity linkage units, it and is provided with between the right side of described vertical frame and described second backboard respectively between the left side and described first backboard of described horizontal frame, to provide elasticity to described first and second backboards respectively.
In addition, each partial cross-section of first and second backboards all has the concave shape to chair rear depression.
In addition, each longitudinal section of first and second backboards all has the convex shape of protruding to chair the place ahead.
In addition, first predetermined portions of each longitudinal section has rectilinear form.
In addition, compare with other parts, second predetermined portions of each longitudinal section has more protruding shape, and second predetermined portions is placed on the various piece that contacts with user's rib.
In addition, each in the first and second elasticity linkage units can comprise: first connector, and it is removably mounted on the horizontal frame; The second and the 3rd connector, it is placed in the two ends of described first connector respectively, and the described second and the 3rd connector is with respect to positioned vertical above or below each backboard, and is releasably attached in described first and second backboards each; With first and second elastomers, it is connected between described first connector and described second connector and between described first connector and described the 3rd connector.
In addition, each in the first and second elasticity linkage units can further be included in a plurality of friction protrusion of each front surface place formation of the second and the 3rd connector.
In addition, first and second backboards can be by the gap adjustment unit along horizontal frame left or move right.
In addition, the gap adjustment unit comprises: first and second holes, and it forms on the left side and the right side of horizontal frame respectively, and first and second holes respectively have along the predetermined length of the length direction of described horizontal frame; With first and second bolts, it inserts respectively in first and second holes, and it is connected respectively to the first and second elasticity linkage units, and when first bolt move right along first hole and second bolt when second hole is moved to the left, the gap turn narrow between first and second backboards; When first bolt be moved to the left along first hole with second bolt when second hole moves right, the gap between first and second backboards broadens.
In addition, back support device further comprises first and second over caps of protecting the described first and second elasticity linkage units respectively.
In addition, each in described first and second over caps can comprise: coupling part, patchhole are formed at described coupling part, to be connected to connector by bolt; First arcuate part, its inside is formed with first space, thus the second connection physical efficiency moves therein; With second arcuate part, its inside is formed with second space, thereby the 3rd connection physical efficiency moves therein.
In addition, each in first and second over caps can further comprise the shock absorbing part that is installed in its edge.
Description of drawings
Fig. 1 represents the stereogram of the back support device of chair according to an embodiment of the invention;
Fig. 2 represents the plan view from above of the back support device of chair according to an embodiment of the invention;
Fig. 3 represents the side view of the back support device of chair according to an embodiment of the invention;
Fig. 4 represents the front view of the back support device of chair according to an embodiment of the invention;
Fig. 5 is the viewgraph of cross-section along V-V line among Fig. 4;
Fig. 6 is the viewgraph of cross-section along VI-VI line among Fig. 4;
Fig. 7 is the stereogram that is illustrated in the elasticity linkage unit in the back support device of chair according to an embodiment of the invention;
Fig. 8 is the stereogram that is illustrated in the over cap in the back support device of chair according to an embodiment of the invention;
Fig. 9 is the side view that the expression over cap is in the state on the back support device that is installed in chair according to an embodiment of the invention;
Figure 10 is in the back support device of chair according to an embodiment of the invention, represents that first and second backboards are in the plan view from above of rotation status with respect to X-axis;
Figure 11 is in the back support device of chair according to an embodiment of the invention, represents that first and second backboards are in the side view of rotation status with respect to Y-axis;
Figure 12 is in the back support device of chair according to an embodiment of the invention, represents that first and second backboards are in the rearview of rotation status with respect to the Z axle;
Figure 13 represents that the back support device of chair according to an embodiment of the invention is applied to a kind of side view of apsacline chair;
Figure 14 represents that the back support device of chair according to an embodiment of the invention is applied to a kind of side view of standard type chair.
The description of reference numerals of critical piece in the accompanying drawing
100: vertical frame 200: horizontal frame
320: the second backboards of 310: the first backboards
402: the second elasticity linkage units of 401: the first elasticity linkage units
The specific embodiment
Below in conjunction with accompanying drawing the present invention is more fully illustrated, in described accompanying drawing, the preferred embodiments of the present invention have been shown.
It will be understood by a person skilled in the art that illustrated embodiment can multitude of different ways make amendment, and can not deviate from the spirit or scope of the present invention.
Fig. 1 represents the stereogram of the back support device of chair according to an embodiment of the invention, Fig. 2 represents the plan view from above of the back support device of chair according to an embodiment of the invention, and Fig. 3 represents the side view of the back support device of chair according to an embodiment of the invention.
As shown in Figure 1, the back support device of chair according to an embodiment of the invention, it comprises vertical frame 100, horizontal frame 200, first and second backboards 310 and 320, and the first and second elasticity linkage units 401 and 402.
As shown in figures 1 and 3, vertical frame 100 vertically is arranged on the rear surface (with reference to Figure 13 or Figure 14) of chair.As example, this vertical frame 100 can be installed in the seat portion (with reference to " 710 " of Figure 14) of chair (with reference to Figure 14).In addition, as another example, be equipped with under the situation of support (with reference to " 610 " of Figure 13) (it is provided with below the present portion with supporting seat portion, and when needing in conjunction with tilting gearing) at chair, vertical frame 100 can be installed on the support (with reference to " 610 " of Figure 13).In addition, in order easily to change, vertical frame 110 is releasably attached on a portion or the support.
As illustrated in fig. 1 and 2, horizontal frame 200 vertically is installed on the vertical frame 100, that is, horizontal frame 200 is settled with respect to ground level.
As illustrated in fig. 1 and 2, first and second backboards 310 and 320 centers with respect to horizontal frame 200 are separately positioned on the left and right sides of horizontal frame 200.Below in conjunction with Fig. 4 to Fig. 6 first and second backboards 310 and 320 are elaborated.
Fig. 4 represents the front view of the back support device of chair according to an embodiment of the invention, and Fig. 5 is the viewgraph of cross-section along V-V line among Fig. 4, and Fig. 6 is the viewgraph of cross-section along VI-VI line among Fig. 4.
For the contact surface that obtains fully to contact with the user back, first and second backboards 310 and each partial cross-section of 320 have the concave shape with respect to horizontal alignment chair rear depression.In other words, when the user watched the front surface of each backboard 300, the shape of the horizontal contact wire of contact wire (here, the contact wire imagination is to draw along the surface of each backboard 300) caved in to the chair rear.This concave shape can be with respect to central vertical line bilateral symmetry or is asymmetricly formed, and described central vertical line is arranged on the center of the vertical contact wire of contact wire.
In more detail, in order to support user's lumbar vertebrae rightly, first and second backboards 310 and each longitudinal section of 320 can have the convex shape of protruding to chair the place ahead.In other words, when the user watched the front surface of each backboard 300, the shape of the vertical contact wire of contact wire was to protrude to chair the place ahead.More specifically, as first example, the core of so vertical contact wire has the circle as its upper and lower, and therefore, generally, vertical contact wire has the convex shape of protruding to chair the place ahead.As second example, as shown in Figure 5, the core of vertical contact wire has rectilinear form, and its upper and lower fully tilts to the chair rear, and therefore, generally, vertical contact wire has the convex shape of protruding to chair the place ahead.According to first and second example, the load of user's upper body can be supported in the top of the projection of each backboard 300, therefore can reduce the load that influences user's lumbar vertebrae.The bottom of the projection of each backboard 300 closely contacts with user's pelvis, therefore can reduce the pressure that pelvis is subjected to.
In addition, as illustrated in Figures 5 and 6, for the degree of convexity of such vertical line, the second portion that the first that it is desirable to be provided with near user's rib is provided with greater than the backbone near the user.In addition, it is desirable to set so that the part of rib contact each part thereon of user relatively has more protruding shape with other parts.In addition, it is desirable to second portion is formed flatly generally.
In addition, as shown in Figure 1, first and second backboards 310 and 320 can move along horizontal frame 200 to the left or to the right by gap adjustment unit 500.Describe gap adjustment unit 500 in detail below in conjunction with Fig. 1.
As shown in Figure 1, gap adjustment unit 500 comprises that respectively first and second holes 510 that form on the left side and the right side of horizontal frame 200 and each in 520, the first and second holes 510 and 520 all have along the predetermined length of the length direction of horizontal frame 200; Insert first and second bolts 530 and 540 of first and second holes 510 and 520 respectively, this first and second bolt connects the first and second elasticity linkage units 401 and 402 respectively.
Therefore, behind loosening a little first and second bolts 530 and 540 of user, if the user moves first backboard 310, then cause first bolt 530 to move right along first hole 510, if and the user moves second backboard 320, then cause second bolt 540 to be moved to the left, the gap turn narrow between first and second backboards 310 and 320 along second hole 520.In addition, if the user moves first backboard 310, then cause first bolt 530 to be moved to the left along first hole 510, and if the user move second backboard 320, then cause second bolt 540 to move right along second hole 520, the gap between first and second backboards 310 and 320 broadens.
As shown in Figure 1 to Figure 3, the first and second elasticity linkage units 401 and 402 can be separately positioned between the left side and first backboard 310 of horizontal frame 200, and between the right side of vertical frame 100 and second backboard 320, to provide elasticity to first and second backboards 310 and 320 respectively.Describe the first and second elasticity linkage units 401 and 402 in detail below in conjunction with Fig. 7.
Fig. 7 is the stereogram that is illustrated in the elasticity linkage unit in the back support device of chair according to an embodiment of the invention.
In the first and second elasticity linkage units 401 and 402 each all comprises first connector 410 that is removably mounted on the horizontal frame 200, be separately positioned on the second and the 3rd connector 420 and 430 at the two ends of first connector 410, the described second and the 3rd connector vertically is arranged on respect to above or below each backboard 300, and be removably mounted on each backboard 300, and being separately positioned between first connector 410 and second connector 420, and first and second elastomers 440 and 450 between first connector 410 and the 3rd connector 430.
And an end of first elastomer 440 is connected with an end of first connector 410, and the other end of first elastomer 440 is connected with an end of second connector 420.In addition, an end of second elastomer 450 is connected with the other end of first connector 410, and the other end of second elastomer 450 is connected with an end of the 3rd connector 430.
First connector of being made by hard synthetic resin 410 is connected with horizontal frame 200, and can form first connecting hole 411 thereon.Therefore, if first bolt 530 sequentially connects first hole 510 and first connecting hole 411 of horizontal frame 200, then the horizontal frame 200 and first connector 410 can interconnect.
Second connector of being made by hard synthetic resin 420 is connected with each backboard 300, and can form second connecting hole 421 thereon.Therefore, if the 3rd bolt 610 sequentially connects second connecting hole 421 and first installing hole 630 that is formed on each backboard 300, then each backboard 300 and second connector 420 can interconnect.
Therefore the 3rd connector of being made by hard synthetic resin 430 is installed on each backboard 300, and the 3rd connector 430 is arranged on the part lower than second connector 420, and can form the 3rd connecting hole 431 thereon.Therefore, if second installing hole 630 that the 4th bolt 610 sequentially connects the 3rd connecting hole 431 and forms at each backboard 300, then each backboard 300 and second connector 420 can interconnect.
As other example, if do not consider the convenience of assembling (comprising the repair procedures of changing parts), then first and second elastomers 440 and 450 can be directly connected to each backboard 300 or horizontal frame 200 by adhesive, thereby replace first, second and the 3rd connector 410,420 and 430.As another example, under the situation that the rear surface and the horizontal frame 200 of each backboard 300 are made by metal material, first and second elastomers 440 and 450 can be directly connected to each backboard 300 or horizontal frame 200 by heat bonding, thereby replace first, second and the 3rd connector 410,420 and 430.
In addition, the above-mentioned first and second elasticity linkage units 401 and 402 each all further comprise a plurality of friction protrusion 460 of each front surface that is formed on the second and the 3rd connector 420 and 430.The second and the 3rd connector 420 and 430 can be placed on each backboard 300 rightly by these a plurality of friction protrusion 460.
In addition, the back support device of chair further comprises first and second over caps 701 and 702 of protecting first and second Flexible elements 401 and 402 respectively according to an embodiment of the invention.Describe first and second over caps 701 and 702 in detail below in conjunction with accompanying drawing 8 and 9.
Fig. 8 is the stereogram that is illustrated in the over cap in the back support device of chair according to an embodiment of the invention, and Fig. 9 is the side view that the expression over cap is in the state on the back support device that is installed in chair according to an embodiment of the invention.
As shown in Figure 8; first and second over caps 701 and 702 each all comprise the coupling part 710 that is formed with patchhole 711; so that described coupling part is connected to connector 410 by bolt; inside is formed with first arcuate part 720 in first space 721; to such an extent as to second connector 420 can move therein; the 3rd connector 430 is formed with second arcuate part 730 in second space 731 with inside, to such an extent as to can move therein.In addition, as another example, first and second each that cover in the (not shown) can be connected with each backboard 300, and it has the form of opening to horizontal frame 200.
In addition, each in first and second over caps 701 and 702 can further comprise the shock absorbing part 740 that is installed on towards the edge of each backboard 300.This shock absorbing part 740 cushions the vibrations of generation when each backboard 300 conflicts mutually owing to moving of each backboard 300 with each over cap 700, to protect each over cap 700 and each backboard 300.Further, each over cap 700 and shock absorbing part 740 can form as one by inserts moulding (insert molding).
Below in conjunction with accompanying drawing 10 to 12, describe the activity of the back support device of chair according to an embodiment of the invention in detail.
Figure 10 is in the back support device of chair according to an embodiment of the invention, show that first and second backboards are in the plan view from above of rotation status with respect to X-axis, Figure 11 is in the back support device of chair according to an embodiment of the invention, show that first and second backboards are in the side view of rotation status with respect to Y-axis, with Figure 12 be in the back support device of chair according to an embodiment of the invention, show that first and second backboards are in the rearview of rotation status with respect to the Z axle.
As shown in figure 10, because having the back that causes the user, first and second backboards 310 and 320 can contact thereon concave shape fully, so when the user was sitting on the chair, user's back can contact fully on first and second backboards 310 and 320.In addition, be not sitting under the normal condition on the chair (with reference to the dotted line shown in Figure 10) the user, if the user is sitting on the chair, because user's pressure, first backboard 310 turns clockwise with respect to X-axis (with reference to " X " of Fig. 1), and second backboard 320 is rotated counterclockwise with respect to X-axis.At this moment, first and second elastomers 440 and 450 keep restoring force, and therefore, if the user stands from chair, first and second backboards 310 and 320 revert to normal condition (with reference to dotted line shown in Figure 10) by this restoring force.
As shown in figure 11, since first and second backboards 310 and 320 have can support the user back top to protect the convex shape of its lumbar vertebrae, so when the user was sitting on the chair, it can prevent the compressing of the top at user back to its lumbar vertebrae.In addition, be not sitting under the normal condition on the chair (with reference to the dotted line shown in Figure 10) the user, if after the user is sitting on the chair, his back recedes, because user's pressure, first and second backboards 310 and 320 are rotated counterclockwise with respect to Y-axis (with reference to " Y " of Fig. 1).At this moment, first and second elastomers 440 and 450 keep restoring force, and therefore, if the user stands from chair, first and second backboards 310 and 320 revert to normal condition (with reference to dotted line shown in Figure 10) by this restoring force.
As shown in figure 12, be not sitting under the normal condition on the chair (with reference to the dotted line shown in Figure 10) the user, if the user is sitting on the chair, because user's pressure, first backboard 310 is rotated counterclockwise with respect to Z axle (with reference to " Z " of Fig. 1), and second backboard 320 turns clockwise with respect to the Z axle.At this moment, first and second elastomers 440 and 450 keep restoring force, and therefore, if the user stands from chair, first and second backboards 310 and 320 revert to normal condition (with reference to dotted line shown in Figure 10) by this restoring force.
As already explained, the back support device of chair has the following advantages according to an embodiment of the invention.
According to embodiments of the invention,,, user's back meets the support of ergometrice ground so accessing because first backboard and second backboard have given shape, and are provided with the elasticity linkage unit.Therefore, work a few hours, influence the pressure energy minimization at user back though the user is sitting on the chair.
After the present invention is illustrated together with embodiment, can understand and the invention is not restricted to disclosed embodiment, but, on the contrary, be intended to contain the modification in the various spirit and scope that are included in the claims and be equal to setting.
Claims (12)
1. the back support device of a chair comprises:
Vertical frame, it vertically is arranged at a portion, and is provided with on the rear surface of present portion;
Horizontal frame, it is installed on the described vertical frame;
First and second backboards, its center with respect to described horizontal frame is separately positioned on the left and right sides of described horizontal frame; With
The first and second elasticity linkage units, it is separately positioned between the left side and described first backboard of described horizontal frame, and between the right side of described vertical frame and described second backboard, to provide elasticity to described first and second backboards respectively.
2. back support device according to claim 1 is characterized in that, each partial cross-section of described first and second backboards all has the concave shape to chair rear depression.
3. back support device according to claim 2 is characterized in that, each longitudinal section of described first and second backboards all has the convex shape of protruding to chair the place ahead.
4. back support device according to claim 3 is characterized in that, first predetermined portions of each described longitudinal section has rectilinear form.
5. back support device according to claim 4, it is characterized in that, compare with other parts, second predetermined portions of each described longitudinal section has more protruding shape, and described second predetermined portions is arranged on each part that contacts with user's rib.
6. back support device according to claim 1 is characterized in that, each in the described first and second elasticity linkage units all comprises:
First connector, it is removably mounted on the horizontal frame;
The second and the 3rd connector, it is separately positioned on the two ends of described first connector, described second with the 3rd connector with respect to vertical setting above or below each backboard, and be releasably attached in described first and second backboards each; With
First and second elastomers, it is connecting between described first connector and described second connector and between described first connector and described the 3rd connector respectively.
7. back support device according to claim 6 is characterized in that, each in the described first and second elasticity linkage units all further is included in a plurality of friction protrusion of the front surface formation separately of the described second and the 3rd connector.
8. back support device according to claim 1 is characterized in that, described first and second backboards by the gap adjustment unit along described horizontal frame left or move right.
9. back support device according to claim 8 is characterized in that, described gap adjustment unit comprises:
First and second holes, it forms in the left side of described horizontal frame and right side respectively, and in described first and second holes each all has along the predetermined length of the length direction of described horizontal frame; With
First and second bolts, it inserts respectively in described first and second holes, and it is connected respectively to the described first and second elasticity linkage units; With
When described first bolt move right along described first hole and described second bolt when described second hole is moved to the left, the gap turn narrow between described first and second backboards; When described first bolt be moved to the left along described first hole with described second bolt when described second hole moves right, the gap between described first and second backboards broadens.
10. back support device according to claim 6 further comprises first and second over caps, and it protects the described first and second elasticity linkage units respectively.
11. back support device according to claim 10 is characterized in that, each in described first and second over caps all comprises:
The coupling part, it is formed with patchhole, to be connected to connector by bolt;
First arcuate part, its inside is formed with first space, thus the described second connection physical efficiency moves therein; With
Second arcuate part, its inside is formed with second space, thus described the 3rd connection physical efficiency moves therein.
12. back support device according to claim 11 is characterized in that, each in described first and second over caps all further comprises the shock absorbing part that is installed in its edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100793766A CN101243926B (en) | 2007-02-15 | 2007-02-15 | Back support device of chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100793766A CN101243926B (en) | 2007-02-15 | 2007-02-15 | Back support device of chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101243926A true CN101243926A (en) | 2008-08-20 |
| CN101243926B CN101243926B (en) | 2010-12-22 |
Family
ID=39944778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100793766A Expired - Fee Related CN101243926B (en) | 2007-02-15 | 2007-02-15 | Back support device of chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101243926B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109090881A (en) * | 2018-08-24 | 2018-12-28 | 美物德品（北京）科技有限公司 | A kind of carbon fiber Lumbar |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012219206B4 (en) * | 2012-10-22 | 2017-10-26 | Sedus Stoll Ag | Dorsokinetic backrest of a chair, seating |
| CN103072501A (en) * | 2013-01-05 | 2013-05-01 | 好孩子儿童用品有限公司 | Seat backrest and automobile seat with backrest |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2642139Y (en) * | 2003-07-11 | 2004-09-22 | 李丽君 | Improved structure for backrest of office chair |
| CN1539354A (en) * | 2003-11-03 | 2004-10-27 | 楠 杨 | Chair with function of health protection for vertebral column |
-
2007
- 2007-02-15 CN CN2007100793766A patent/CN101243926B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109090881A (en) * | 2018-08-24 | 2018-12-28 | 美物德品（北京）科技有限公司 | A kind of carbon fiber Lumbar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101243926B (en) | 2010-12-22 |
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Granted publication date: 20101222 Termination date: 20210215 |