CN107149315B - Multifunctional balance chair - Google Patents
Multifunctional balance chair Download PDFInfo
- Publication number
- CN107149315B CN107149315B CN201710286641.1A CN201710286641A CN107149315B CN 107149315 B CN107149315 B CN 107149315B CN 201710286641 A CN201710286641 A CN 201710286641A CN 107149315 B CN107149315 B CN 107149315B
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- balance chair
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- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 230000002452 interceptive effect Effects 0.000 abstract description 3
- 210000002414 leg Anatomy 0.000 description 19
- 230000000694 effects Effects 0.000 description 4
- 210000003127 knee Anatomy 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
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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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
-
- 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
- A47C7/50—Supports for the feet or the legs
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention discloses a multifunctional balance chair which comprises a supporting part, a seat part and a kneeling part. The seat part is movably connected with the supporting part and can control the included angle between the seat part and the horizontal plane through the relative movement of the seat part. The kneeler part is movably connected with the seat part and the support part through a connecting mechanism, and the movement of the seat part and the movement of the kneeler part form linkage. The kneeler part is in a position aligned with the seat part, namely a seat state, so that a common chair stool in the market is formed, and the seat part of the chair stool comprises the seat part and the kneeler part, so that the area of the seat part is increased, and the kneeler is prevented from interfering the leg placement of a seated user; the kneeler parts are positioned to form kneelers of the balance chair, the seat part of the balance chair is obliquely arranged, the inclined surface faces forwards, the kneeler parts are obliquely arranged, the inclined surface faces backwards, a user sits on the seat part, and the two legs kneel and support on the kneeler parts, so that the balance chair is in a state of the balance chair, and the balance chair common in the market is formed.
Description
Technical Field
The invention relates to a balance chair, in particular to a multifunctional balance chair.
Background
The conventional balance chair, which comprises a leg rest, a backrest fixed on the leg rest, a seat part fixed on the leg rest and a kneeling part fixed on the leg rest, has only a single function, and thus has a need for improvement.
In view of the above disadvantages, a solution is proposed, such as CN2390484Y published by the chinese patent database, a variable balance chair includes a seat, a support and a backrest, a back seat adjusting sleeve rod of the support is connected with a back support rod in a connection manner capable of realizing lifting, the seat is connected with the support in a positioning embedded connection manner, and a knee leg stress cushion is fixed at the support corresponding to the knee leg when a human body sits on the support. Although the variable balance chair can be changed between a chair state and a balance chair, when the variable balance chair is used as the chair state, on one hand, the knee leg stress cushion interferes with the placement of the legs of a seated user, so that the seated user feels uncomfortable, and on the other hand, the seat plate area is too small, so that the seated user feels uncomfortable.
Disclosure of Invention
The invention provides a multifunctional balance chair, which overcomes the defects of the multifunctional balance chair in the background technology.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the multifunctional balance chair comprises a support part, a seat part and a kneeling part, wherein the seat part is movably connected with the support part and can control the included angle between the seat part and the horizontal plane through the relative movement of the seat part; the kneeler part is movably connected with the seat part and is connected with the support part through a connecting mechanism, the kneeler part can move between a position of aligning the seat part and a position of forming a kneeler of the balance chair, and the movement of the seat part and the movement of the kneeler part are interlocked.
In one embodiment: the seat portion is pivotally connected to the support portion and the kneeler portion is pivotally connected to the seat portion.
In one embodiment: the chair also comprises a telescopic mechanism, one end of the telescopic mechanism can be rotatably connected to the supporting part, and the other end of the telescopic mechanism can be rotatably connected to the rear part of the chair seat part.
In one embodiment: still including connecting the support at the support part, be equipped with on this support and follow support relative slip's slide, this seat support part is connected with the gliding slide bar of seat support part relatively of ability, and this slide bar connection is on the slide.
In one embodiment: the center of the circle of the bracket is positioned on the arc line of the rotation axis of the chair seat part.
In one embodiment: the backrest is connected to the support.
In one embodiment: the handrail is connected to the support.
In one embodiment: the backrest is provided with a slide bar capable of sliding downwards, and the lower end of the slide bar can be rotatably connected with the supporting part; the rear portion of the seat portion is pivotally connected to the backrest.
In one embodiment: the linkage includes a synchronizing link having one end rotatably connected to the kneeler portion and the other end connected to and rotatable relative to the support portion.
In one embodiment: the front middle part of the seat part is provided with a convex part, the rear middle part of the kneeler part is concavely provided with an inwards concave part, and the inwards concave part and the convex part of the kneeler part at the position of aligning the seat part are in concave-convex matching.
In one embodiment: the kneeling pad part can be rotatably connected with the seat part; the front middle part of the seat part is provided with a convex part, the rear middle part of the kneeling pad part is concavely provided with a concave part which is concave inwards, and the concave part and the convex part of the kneeling pad part at the position aligned with the seat part are matched in a concave-convex way; the axes of rotation of the kneeler portion and the seat portion pass through the front of the male portion and the rear of the female portion.
In one embodiment: a connecting rod supporting arm is fixedly arranged below the front part of the kneeling pad part; the connecting mechanism comprises a synchronous connecting rod, one end of the synchronous connecting rod can be rotatably connected with the tail end of the connecting rod supporting arm of the kneeling pad part, and the other end of the synchronous connecting rod is connected with the supporting part and can rotate relative to the supporting part.
Compared with the background technology, the technical scheme has the following advantages:
seat support part swing joint can control the contained angle of seat support part and horizontal plane at the support part and through the relative activity of seat support part, and kneeler part swing joint is at the support part at seat support part and through coupling mechanism, and kneeler part can be in the position of the seat support part of aliging and constitute the activity between the position of balanced chair kneeler, and the activity of seat support part constitutes the interlock with the activity of kneeler part, wherein: the kneeler part is arranged in a position aligned with the seat part, namely, the balance chair is arranged in a chair state at the time, a common chair stool in the market is formed, and the seat part of the chair stool comprises the seat part and the kneeler part, so that the seat area is increased, and the kneeler is prevented from interfering the leg placement of a seated user; the kneeler parts are in the positions for forming kneelers of the balance chair, namely, the seat part of the balance chair is obliquely arranged, the inclined surface faces forwards, the kneeler parts are obliquely arranged, the inclined surface faces backwards, a seat user sits on the seat part, and two legs kneel and support on the kneeler parts, and the balance chair is in a state of the balance chair, thereby forming the common balance chair on the market.
The seat part can be rotatably connected to the supporting part, and the kneeler part can be rotatably connected to the seat part, so that the structure is simple and compact, and the cost is low.
One end of the telescopic mechanism can be rotatably connected to the supporting part, and the other end of the telescopic mechanism can be rotatably connected to the rear part of the chair seat part, so that the structure is simple and compact, and the cost is low.
The support is provided with a sliding seat capable of sliding relatively along the support, the chair seat part is connected with a sliding rod capable of sliding relatively to the chair seat part, and the sliding rod is connected to the sliding seat.
The chair further comprises a backrest, the backrest is provided with a sliding rod capable of sliding downwards, the lower end of the sliding rod can be rotatably connected to the supporting portion, the rear portion of the seat portion can be rotatably connected to the backrest, the angles of the backrest in a balance chair state and the backrest in a seat state are different, and a seated person can enhance comfort in the balance chair state and the seat state.
The connecting mechanism comprises a synchronous connecting rod, one end of the synchronous connecting rod can be rotatably connected to the kneeler part, the other end of the synchronous connecting rod is connected to the supporting part and can rotate relative to the supporting part, and linkage is achieved.
The middle part is established to be convex bulge before the seat support part, and kneeler part back middle part is sunken to be the concave part of indent, is in the concave part and the concave-convex adaptation of bulge of the kneeler part of the position of aligning the seat support part, and the axis of rotation of kneeler part and seat support part passes bulge front portion and concave part rear portion, and kneeler part is opposite direction synchronous change with the inclination of seat support part.
The connecting rod supporting arm is fixedly arranged below the front part of the kneeling pad part, the connecting mechanism comprises a synchronous connecting rod, one end of the synchronous connecting rod can be rotatably connected to the tail end of the connecting rod supporting arm of the kneeling pad part, the other end of the synchronous connecting rod is connected to the supporting part and can rotate relative to the supporting part, the assembly is convenient, and the mechanism layout is reasonable.
The chassis comprises a tray body and a cantilever fixedly connected to the front lower part of the tray body, the seat part is movably connected to the tray body, and the kneeler part is connected to the tail end of the cantilever through a connecting mechanism, so that the assembly is convenient, and the mechanism layout is reasonable.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic structural view of a multifunctional balance chair in a balance chair state according to an embodiment.
Fig. 2 is a schematic structural view of the multifunctional balance chair in a seat state according to the embodiment.
Fig. 3 is a perspective exploded view of partial components of the multifunctional balance chair according to the embodiment.
Fig. 4 is a schematic structural view of the multifunctional balance chair in the balance chair state according to the second embodiment.
Fig. 5 is a structural schematic view of the multifunctional balance chair of the second embodiment in a chair state.
Fig. 6 is a schematic structural view of the multifunctional balance chair in the state of the balance chair.
Fig. 7 is a structural schematic diagram of the multifunctional balance chair in the seat state according to the embodiment.
Fig. 8 is a perspective exploded view of the three functional balance chair of the embodiment.
Fig. 9 is a schematic structural view of the four-function balance chair of the embodiment in a balance chair state.
Fig. 10 is a structural schematic view of the four-function balance chair of the embodiment in a chair state.
Detailed Description
Example one
Referring to fig. 1 to 3, the multifunctional balance chair comprises a support part 10, a seat part 20 and a kneeler part 30, wherein the seat part 20 can be rotatably connected with the support part 10 and the angle between the seat part 20 and the horizontal plane can be controlled by the relative movement of the seat part 20; the kneeler portion 30 is pivotally connected to the seat portion 20 and to the support portion 10 by a linkage, the kneeler portion 30 is movable between a position in which it is aligned with the seat portion 20 and a position in which it forms a balance chair kneeler, the movement of the seat portion 20 being coordinated with the movement of the kneeler portion 30 such that the angle of inclination of the kneeler portion 30 relative to the seat portion 20 is changed in synchronism in the opposite direction and the locking is changed if the seat portion 20 is tilted forward by 30 'to 40'.
As shown in FIG. 2, the kneeler portion 30 is in a position aligned with the seat portion 20, i.e., with the balance chair in the chair position, to provide a common chair seat in the market, which includes both the seat portion and the kneeler portion, to increase the seat area and to avoid the kneelers interfering with the leg placement of the seated user. As shown in FIG. 1, the kneeler portion 30 is in a position to form the kneeler of the balance chair, i.e., with the seat portion 20 of the balance chair inclined and facing obliquely forward, and the kneeler portion 30 inclined and facing obliquely rearward, the user sits on the seat portion 20 and kneels on the kneeler portion 30 with his or her legs, and the balance chair is in a state of balance chair to form a common balance chair on the market.
In this embodiment, a bracket 40 is further included, which is fixed to the supporting portion 10, and the center of the bracket 40 is located on the arc line of the rotation axis of the seat portion 20. The support 40 is provided with a sliding seat 41 capable of relatively sliding along the support 40, the seat portion 20 is connected to a first sliding rod 21 capable of sliding back and forth relative to the seat portion 20, the first sliding rod 21 is fixedly connected or rotatably connected to the sliding seat 41, and the sliding seat 41 can slide relative to the support 40 to drive the seat portion 20 to rotate relative to the support portion 10. Also included are a backrest 50 and armrests 60; the backrest 50 is attached to the bracket 40 and the armrests 60 are attached to the bracket 40, such as by a fixed or rotatable connection.
In this embodiment, the linkage mechanism includes a synchronizing link 31, one end of the synchronizing link 31 is rotatably connected to the kneeler unit 30, and the other end of the synchronizing link 31 is connected to the support unit 10 and is rotatable relative to the support unit 10. The front middle part of the seat part 20 is provided with a convex projecting part 22, the rear middle part of the kneeler part 30 is concavely provided with a concave part 32 which is concave, the concave part 32 and the convex part 22 of the kneeler part 30 which is at the position of aligning the seat part 20 are in concave-convex adaptation, and the two parts are mutually joggled to form a complete seat. Preferably, the axis of rotation of the kneeler portion 30 and seat portion 20 passes through the front of the male portion 22 and the rear of the female portion 32. A connecting rod supporting arm 33 is fixed under the front part of the kneeling pad part 30; the timing link 31 is pivotally connected at one end to the end of the link support arm 33 of the kneeler section 30 and at the other end to the support section 10 and is pivotally connected relative to the support section 10. The connection of the other end is for example: the other end of the synchronous connecting rod 31 is connected with the pivot shaft in a rotating way; the pivot is movably matched and connected with the sliding groove, the adjusting mechanism is connected with the pivot and the supporting part to adjust the position of the pivot relative to the sliding groove, and the relative position of the other end of the rotating connecting axis can be changed through the adjusting mechanism and the sliding groove.
In a specific structure: the supporting part 10 comprises a supporting frame 11 and a chassis 12 fixedly connected on the supporting frame 11; the supporting frame 11 is a leg seat of a wheelchair with rolling wheels as shown in fig. 1 or fig. 2, or a herringbone leg of fig. 4 and fig. 5, etc.; the base plate 12 includes a plate 121 and a suspension arm 122 fixed to the front lower portion of the plate 121, the seat portion 20 is rotatably connected to the plate 121, and the other end of the synchronization link 31 is connected to the end of the suspension arm 122.
According to the requirement, a first locking mechanism is arranged between the seat part 20 and the supporting part 1 (such as the plate 121) or/and between the sliding seat 41 and the bracket 40 or/and between the first sliding rod 21 and the seat part 20, the first locking mechanism is locked so as to keep the multifunctional balance chair in a balance chair state or a chair state, and the multifunctional balance chair can be changed by releasing the locking. If the first locking mechanism adopts the matching of the lock hole and the bolt, the bolt is inserted into the lock hole to be locked, and is pulled out to be released. A second latch mechanism may also be provided between the seat portion 20 and the kneeler portion 30 as desired.
In the embodiment, the seat portion 20 includes a cushion bridge 23 and a cushion 24 fixed on the cushion bridge 23, and the cushion 24 is in a convex shape. The kneeling pad part 30 comprises a kneeling pad frame 34 and two kneeling pads 35, the kneeling pad frame 34 is a concave structure, the two kneeling pads 35 are respectively fixed on the left and right parts of the kneeling pad frame 34, the supporting arm 33 is fixed under the front part of the kneeling pad frame 34. The axes of the seat and kneeler portions pass through the front of the cushion bridge 23 and the front of the kneeler frame 34.
The change process of the multifunctional balance chair comprises the following steps: the angle of inclination of the kneeler portion 30 and the seat portion 20 is changed synchronously in the opposite direction by the action of the synchronizing linkage when the rear portion of the seat portion 20 is pulled upward, and the locking is changed when the seat portion 20 is tilted forward by 30 'to 40'.
Example two
Referring to fig. 4 to 5, the difference from the first embodiment is: the supporting part 10 comprises a herringbone leg 13 and a V-shaped seat 14, wherein two open ends of the V-shaped seat 14 are fixedly connected to the upper parts of two legs of the herringbone leg 13 respectively; the chair further comprises a telescopic mechanism 70, one end of the telescopic mechanism 70 can be rotatably connected with the V-shaped seat 14 of the supporting part 10, the other end can be rotatably connected with the rear supporting arm 25 fixedly arranged at the rear part of the chair seat part 20, and the telescopic mechanism 70 is a hydraulic cylinder mechanism; the other end of the synchronization link 31 is connected to the V-shaped seat 14.
EXAMPLE III
Please refer to fig. 6 to 8, which are different from the first embodiment in that: the backrest 50 is provided with a second slide rod 51 capable of sliding downwards, and the lower end of the second slide rod 51 can be rotatably connected to a second rear support arm 123 fixed at the rear part of the disc 121 of the support part 10; the seat bridge 23 of the seat portion 20 is pivotally connected at a rear portion to the backrest 50. The backrest 50 comprises two backrest rods 52 and a backrest cushion 53 fixedly connected between the two backrest rods 52, and a telescopic structure is formed between the backrest rods 52 and the second sliding rod 51; the rear part of the cushion bridge 23 can be rotatably connected with the backrest rod 52. Preferably, the back bar extends below the back pad 53.
According to the requirement, a first locking mechanism is arranged between the seat part 20 and the supporting part 1 (such as the plate body 121) or/and between the backrest rod and the second sliding rod, the first locking mechanism can be locked to keep the multifunctional balance chair in a balance chair state or a chair state, and the multifunctional balance chair can be changed by releasing the locking. If the first locking mechanism is matched with a lock hole and a bolt, the bolt is inserted into the lock hole to be locked, and is pulled out to be released. A second latch mechanism may also be provided between the seat portion 20 and the kneeler portion 30 as desired.
Example four
Referring to fig. 9 to 10, the difference from the third embodiment is: the support section 10 comprises a chevron leg 13, the other end of the synchronising link being pivotally connected to the forward leg of the chevron leg 13 and the second slide being pivotally connected to the rear leg of the chevron leg 13.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, and all equivalent variations and modifications made within the scope of the present invention and the content of the description should be included in the scope of the present invention.
Claims (10)
1. Multifunctional balance chair, including support portion, seat support part and kneeling cushion part, its characterized in that: the chair seat part is movably connected with the supporting part and can control the included angle between the chair seat part and the horizontal plane through the relative movement of the chair seat part; the kneeling part can be rotatably connected with the seat part and is connected with the support part through a connecting mechanism, the kneeling part can move between a position of aligning the seat part and a position of forming a kneeling cushion of the balance chair, and the movement of the seat part and the movement of the kneeling part form linkage; the front middle part of the seat part is provided with a convex part, the rear middle part of the kneeling pad part is concavely provided with a concave part which is concave inwards, and the concave part and the convex part of the kneeling pad part at the position aligned with the seat part are matched in a concave-convex way; the axes of rotation of the kneeler portion and the seat portion pass through the front of the male portion and the rear of the female portion.
2. The multifunctional balance chair of claim 1, wherein: the seat portion is pivotally connected to the support portion.
3. The multifunctional balance chair of claim 1, wherein: the chair also comprises a telescopic mechanism, one end of the telescopic mechanism can be rotatably connected to the supporting part, and the other end of the telescopic mechanism can be rotatably connected to the rear part of the chair seat part.
4. The multifunctional balance chair of claim 1, wherein: still including connecting the support at the support part, be equipped with on this support and follow support relative slip's slide, this seat support part is connected with the gliding slide bar of seat support part relatively of ability, and this slide bar connection is on the slide.
5. The multifunctional balance chair of claim 4, wherein: the center of the circle of the bracket is positioned on the arc line of the rotation axis of the chair seat part.
6. The multifunctional balance chair of claim 4, wherein: the backrest is connected to the bracket.
7. The multifunctional balance chair of claim 4, wherein: the handrail is arranged on the support.
8. The multifunctional balance chair of claim 2, wherein: the backrest is provided with a slide bar capable of sliding downwards, and the lower end of the slide bar can be rotatably connected with the supporting part; the rear portion of the seat portion is pivotally connected to the backrest.
9. A multifunctional balance chair according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 wherein: the linkage mechanism includes a synchronizing link having one end rotatably connected to the kneeler portion and another end connected to and rotatable relative to the support portion.
10. A multi-functional balance chair according to claim 1 or 3 or 4 or 5 or 6 or 7 or 8 wherein: a connecting rod supporting arm is fixedly arranged below the front part of the kneeling pad part; the connecting mechanism comprises a synchronous connecting rod, one end of the synchronous connecting rod can be rotatably connected with the tail end of the connecting rod supporting arm of the kneeling pad part, and the other end of the synchronous connecting rod is connected with the supporting part and can rotate relative to the supporting part.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286641.1A CN107149315B (en) | 2017-04-27 | 2017-04-27 | Multifunctional balance chair |
| PCT/CN2018/078109 WO2018196480A1 (en) | 2017-04-27 | 2018-03-06 | Multifunctional balance chair |
| JP2019600141U JP3226353U (en) | 2017-04-27 | 2018-03-06 | Multifunctional balance chair |
| US16/665,080 US11006752B2 (en) | 2017-04-27 | 2019-10-28 | Multifunctional balance chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286641.1A CN107149315B (en) | 2017-04-27 | 2017-04-27 | Multifunctional balance chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107149315A CN107149315A (en) | 2017-09-12 |
| CN107149315B true CN107149315B (en) | 2023-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710286641.1A Active CN107149315B (en) | 2017-04-27 | 2017-04-27 | Multifunctional balance chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107149315B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3226353U (en) | 2017-04-27 | 2020-06-18 | 叶龍華 | Multifunctional balance chair |
| CN107972536A (en) * | 2017-11-21 | 2018-05-01 | 浙江大学 | Car assisted passenger's alleviation low back pain kneels formula seat unit |
| CN114698966A (en) * | 2022-04-28 | 2022-07-05 | 叶龙华 | Balance chair with locking device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO153913C (en) * | 1983-07-08 | 1986-06-18 | Hans Chr Mengshoel | DEVICE AT CHAIR. |
| FR2552988B1 (en) * | 1983-10-10 | 1986-03-21 | Savigny Francois | VERSATILE SEAT GIVING A MID-SEAT, MID-KNEE STATION |
| CH685277A5 (en) * | 1992-10-08 | 1995-05-31 | Syntech Sa | Chair mechanism. |
| US5542746A (en) * | 1994-03-17 | 1996-08-06 | Bujaryn; L. Walter | Variable posture component system seating device |
| US5536067A (en) * | 1994-08-10 | 1996-07-16 | Pinto; Shlomo | Chair |
| CN2261766Y (en) * | 1995-09-06 | 1997-09-10 | 张维军 | Easy office chair |
| GB2348124A (en) * | 1999-03-26 | 2000-09-27 | Zaki Kanaan | Posture chair with tilting seat. |
| CN2390484Y (en) * | 1999-10-20 | 2000-08-09 | 曹忠勤 | Variable balance chair |
| US20090140567A1 (en) * | 2007-11-03 | 2009-06-04 | Karl Simon Weiss | Multi-adjustable swivel chair with back and knee supports |
| PL398195A1 (en) * | 2012-02-21 | 2013-09-02 | Andrzej Kieryllo | Bifunctional chair with a split-seat |
| CN207341490U (en) * | 2017-04-27 | 2018-05-11 | 叶龙华 | A kind of multifunctional balanced chair |
-
2017
- 2017-04-27 CN CN201710286641.1A patent/CN107149315B/en active Active
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