CN106308183A - Conference smart chair capable of positioning and self-walking - Google Patents
Conference smart chair capable of positioning and self-walking Download PDFInfo
- Publication number
- CN106308183A CN106308183A CN201610718503.1A CN201610718503A CN106308183A CN 106308183 A CN106308183 A CN 106308183A CN 201610718503 A CN201610718503 A CN 201610718503A CN 106308183 A CN106308183 A CN 106308183A
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- China
- Prior art keywords
- chair
- motor
- seat
- lower limb
- moving wheel
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- 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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- 210000003141 lower extremity Anatomy 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- A47C7/002—Chair or stool bases
- A47C7/006—Chair or stool bases with castors
Abstract
This invention disclosed a conference smart chair capable of positioning and self-walking. After the start of the meeting, the service host issues an open instruction to the hydraulic opening and closing device in the conference table, and the side of the conference table which is near the public screen opens in a specified angle from the center line. Meanwhile, the chair moves back to a designated location by using wireless radio frequency positioning and rotates to the public screen so that it is convenient for participants to watch at the public screen; after the meeting begins, the service host issues a close open instruction to the hydraulic opening and closing device in the conference table. The conference table closes. The chairs resets in an order and stop for wireless charging in standby mode. The smart chair includes a seat, a chair positional tag, a case, a seat steering motor, a seat electronic compass, a steering wheel motor, a battery, a mobile wheel motor, a motor driven controller, a steering wheel electronic compass, a mobile wheel, a steering wheel, a wireless charging coll and a conference room positioning device. The smart chair can effectively improve the comfort of the participants and avoid clutter distribution of chairs after the meetings.
Description
Technical field
The present invention relates to a kind of intelligence chair, especially relate to a kind of location, from the meeting room intelligence chair of walking.
Background technology
Current major part medium-sized and small enterprises and the meeting room of school and family all use conventional chair, complete armrest
Dynamic displacement.
Prior art the most just possesses the chair from walking function, such as Publication No. CN 2642141 Y, entitled Novel chair
Son disclose " Novel chair, it be by headrest (1), the chair back (2), chair arm (3), seat support (4), massage cushion (5), pedal (6),
Short axle (7), switch (8), desk (9), table bar (10), microcomputer (11), wire (12), battery (13), spring (14), chair
Lower limb (15), screw (16) are constituted, and the short axle of the root position (7) of its headrest (1) is connected to the bottom position of the chair back (2), the chair back
(2) bottom position screw (16) is connected to the head position of seat support (3), and the root position screw (16) of chair arm (3) is connected to
The tip position of seat support (4), the short axle of the bottom position (7) of seat support (4) is connected to the root position of pedal (6), it is characterized in that:
The root position screw of chair lower limb (15) is connected to the back position of seat support (4), the embedded connection in core position, back of seat support (4)
At the outer surface position of microcomputer (11), the head position wire of microcomputer (11) is connected to the positive pole position of battery (13)
Putting, the negative pole position of battery (13) is pressed in the head position of spring (14).But " move by the way of similar foot traffic
, this mode exists for complicated in mechanical structure, and the problem easily leaving impression on base plate；Also just like Publication No. CN
204318095 U, entitled a kind of multifunctional intelligent chair discloses that " a kind of multifunctional intelligent chair, including chair foot, chair
Seat and the chair back, and the left handrail that is connected with chair back two side ends respectively and right handrail, it is characterised in that: described chair foot land end
It is provided with universal wheel；The bottom surface of described seat support is provided with parcel tray；The face that leans against of the described chair back is provided with back massager, the described chair back
Top is provided with neck massager；Described left handrail or right handrail are provided with the embedding being connected with back massager and neck massager
Formula controller, for controlling startup cut out, massaging way and the power of back massager and neck massager；Described embedded control
The driving means that device processed is also connected with universal wheel is connected, for controlling automatically moving of universal wheel；Described embedded controller is also
The cipher switch being provided with parcel tray is connected, for controlling the automatic switch of parcel tray；Described embedded controller also with chair foot
Arrangement for adjusting height be connected, for controlling the automatic height regulation of chair foot；It is additionally provided with music on described left handrail and right handrail
Player or video player or charging inlet.", but do not disclose driving means and the most how to control universal wheel and move
, the structure of driving means is not the most disclosed, even if also cannot find out from accompanying drawing, a most simply concept is the trueest
Just realizing the automatic walking of chair.
Summary of the invention
The present invention seeks to a kind of automatically to walk, auto-steering and structure is relatively simple positions, from walking
Meeting room intelligence chair.
The technical solution adopted for the present invention to solve the technical problems:
A kind of position, from the meeting room intelligence chair of walking, it is followed successively by from top to bottom: seat, chair location label, machine
Case, seat stearing motor, seat electronic compass, deflecting roller motor, accumulator, moving wheel motor, motor drive controller, turn to
Wheel electronic compass, moving wheel, deflecting roller and Wireless charging coil；Described under-seat is provided with chair lower limb, and seat rotates with chair lower limb
Connecting, chair lower limb lower end is provided with universal wheel, and described seat stearing motor, chair location label and seat electronic compass are arranged on seat
Underface, cabinet is positioned at under-seat and fixing with chair lower limb is connected, deflecting roller motor, moving wheel motor, motor drive controller
Being respectively mounted in the chassis with accumulator, the output shaft of seat stearing motor is connected with chair lower limb by gear train, and deflecting roller is by propping up
Frame is rotationally connected with cabinet, and deflecting roller motor is connected with support by gear train；Described moving wheel is by jack and chair lower limb
Lower end connects；Deflecting roller electronic compass is arranged in the rotating shaft of deflecting roller；Wireless charging coil is arranged on below cabinet closely
The position in face, Wireless charging coil is connected with storage battery, accumulator and motor drive controller and accumulator and deflecting roller
Electronic compass all electrically connects, motor drive controller and seat stearing motor, seat electronic compass, deflecting roller motor and moving wheel
Motor all electrically connects.
Described jack includes connecting rod, electric magnet and light spring, and connecting rod is ferromagnetic, the lower end of connecting rod and motion
Wheel is rotationally connected, and the upper end of connecting rod is hinged with cabinet lower end or chair lower limb lower end；Light spring one end is connected with chair lower limb lower end, lightweight
The spring other end is connected with connecting rod, and during naturalness, light spring can keep moving wheel to be in leaving the state of ground, and electric magnet is solid
Being scheduled under chair lower limb and rectify on the position of connecting rod, when the solenoid is energized, connecting rod can be adsorbed by electric magnet so that moving wheel
Contacting with ground, when electric magnet power-off, connecting rod resets under the effect of light spring so that moving wheel disengages with ground；Fortune
Driving wheel motor is in transmission connection with moving wheel.
Described moving wheel motor is in transmission connection with moving wheel by chain.
The upper end of described connecting rod is hinged with chair lower limb lower end.
Leg is provided with gear ring, the axis of gear ring and the dead in line of chair lower limb upper end, the output of seat stearing motor
Axle is connected with gear ring by gear.
The invention have the advantages that:
The present invention can solve medium-sized and small enterprises, the meeting room chair of school walks automatically and automatically reset problem, significantly alleviates
The workload of staff, and also by wireless charging, solve charging problem not in time, and cleaning work after the meeting
The problems such as inconvenience, can be effectively improved the efficiency of the comfortableness of personnel participating in the meeting, meeting, it is to avoid the in disorder distribution of chair after the meeting；And it is overall
Structure is relatively simple, and the normality of driving wheel is discontiguous with ground, then user can promote chair and the most driven at any time
The impact of driving wheel, now uses and is experienced as identical with the use of conventional chair, only when receiving instruction, driving wheel just understand with
Ground contacts so that chair moves to the location of instruction, therefore uses more hommization.
Accompanying drawing explanation
Fig. 1: the present invention is a kind of to be positioned, from the meeting room intelligence chair front schematic view of walking
In figure: 1, seat, 2, seat electronic compass, 3, cabinet；
Fig. 2: the present invention is a kind of to be positioned, partly cut open schematic diagram from the meeting room Intelligent chair handset case of walking
In figure: 4, chair lower limb, 5, moving wheel motor, 6, accumulator, 7, seat stearing motor, 8, motor drive controller, 9, turn to
Turbin generator, 10, deflecting roller electronic compass, 11, Wireless charging coil；
Fig. 3: the present invention is a kind of to be positioned, from the meeting room Intelligent chair handset case sectional view of walking
In figure: 12, electric wire, 13, bevel gear set；
Fig. 4: the present invention is a kind of to be positioned, from the meeting room intelligence chair motion walked and steering structure figure
In figure: 14, moving wheel, 15, light spring, 16, chain, 17, deflecting roller, 18, electric magnet, 19, connecting rod；
Fig. 5: floor sectional view
In figure: 20, desktop, 21, reference location label, 22, chair location label, 23, wireless charger；
Fig. 6: meeting room original state figure
In figure: 24, service host, 25, public screen, 26, floor, 27, reader, 28, intelligence chair, 29, conference table；
Fig. 7: meeting room layout completes schematic diagram
In figure: 30, hydraulic open-close device, 31, linkage.
Detailed description of the invention
As shown in Fig. 1 ~ 5, a kind of meeting room intelligence chair, it is followed successively by from top to bottom: seat 1, chair location label 22,
Cabinet 3, seat stearing motor 7, seat electronic compass 2, deflecting roller motor 9, accumulator 6, moving wheel motor 5, motor drive control
Device 8 processed, deflecting roller electronic compass 10, moving wheel 14, deflecting roller 17 and Wireless charging coil 11；It is provided with chair below described seat 1
Lower limb 4, and seat 1 is rotationally connected with chair lower limb 4, chair lower limb 4 lower end is provided with universal wheel, described seat stearing motor 7, chair location label
22 and seat electronic compass 2 be arranged on immediately below seat 1, cabinet 3 is positioned at below seat 1 and fixing with chair lower limb 4 is connected, deflecting roller
Motor 9, moving wheel motor 5, motor drive controller 8 and accumulator 6 are installed in cabinet 3, the output of seat stearing motor 7
Axle is connected with chair lower limb 4 by gear train, and deflecting roller 17 is rotationally connected with cabinet 3 by support, and deflecting roller motor 9 passes through gear train
It is connected with support；Described moving wheel 14 is connected with chair lower limb 4 lower end by jack；Deflecting roller electronic compass 10 is arranged on and turns to
Take turns in 17 rotating shafts；Wireless charging coil 11 is arranged on the position of ground proximity below cabinet 3, Wireless charging coil 11 and electric power storage
Pond 6 electrically connects, and accumulator 6 all electrically connects with deflecting roller electronic compass 10 with motor drive controller 8 and accumulator 6, and motor drives
Movement controller 8 all electrically connects with seat stearing motor 7, seat electronic compass 2, deflecting roller motor 9 and moving wheel motor 5.
Described jack includes that connecting rod 19, electric magnet 18 and light spring 15, connecting rod 19 are ferromagnetic, connecting rod 19
Lower end is rotationally connected with moving wheel 14, the upper end of connecting rod 19 and chair lower limb 4 lower end hinged (also hinged with cabinet lower end)；Light spring
15 one end are connected with chair lower limb 4 lower end, and light spring 15 other end is connected with connecting rod 19, and during naturalness, light spring 15 can be protected
Holding moving wheel 14 to be in and leave the state of ground, electric magnet 18 is fixed on the positions that chair lower limb is rectified connecting rod 19 for 4 times, works as electric magnet
During 18 energising, connecting rod 19 can be adsorbed by electric magnet 18 so that moving wheel 14 contacts with ground, when electric magnet 18 power-off,
Connecting rod 19 resets under the effect of light spring 15 so that moving wheel 14 disengages with ground；Moving wheel motor 5 passes with moving wheel 14
It is dynamically connected.
Described moving wheel motor 5 is in transmission connection with moving wheel 14 by chain 16.
The upper end of described connecting rod 19 is hinged with chair lower limb 4 lower end.
Leg 4 is provided with gear ring, the dead in line of the axis of gear ring and chair lower limb 4 upper end, seat stearing motor 7 defeated
Shaft is connected with gear ring by gear.
As shown in Figure 6 and Figure 7, state is used:
(1), when if desired public affairs shield 25 presentation content, the most before a conference begins, host presses meeting start button, service host
24 obtain the particular location of each intelligence chair 28 by reader 27, and service host 24 drives to the motor of intelligence chair 28
Controller 8 sends movement directive, and deflecting roller motor 9 obtains deflecting roller 17 towards angle, drive by deflecting roller electronic compass 10
Deflecting roller 17 turns to appointment locality, is put down by the moving wheel 14 of undercarriage form by magnetic force, fortune after electric magnet 18 energising
Driving wheel motor 5 drives intelligence chair 28 to specifying position, and all intelligence chairs 28 launch in V-shape, can effectively solve participant
The occlusion issue of member's viewing public affairs screen 25 appearance；
(2) postponing when all intelligence chairs 28 move to specific bit, seat stearing motor 7 obtains seat by seat electronic compass 2
Chair 1, towards angle, drives seat 1 to turn to public screen 25 directions, and the hydraulic open-close device 30 on conference table 29 starts to shrink at, the company of drive
Desktop 20 is strutted into V-shape from centre by linkage 31, facilitates personnel participating in the meeting to carry out minutes, and distraction angle is multistage adjustable；
(3) after meeting adjourned, meeting presider to service host 24 presses end conference button, the hydraulic open-close dress of conference table 29
Putting 30 promotion linkages 31 and draw conference table 29 in Guan Bi, then service host 24 obtains each intelligence by reader 27
The particular location of chair 28, optimizes mobile route with the principle of " the most crashproof ", and then service host 24 is to intelligence chair 28
Motor drive controller 8 sends reset command, makes all intelligence chairs 28 automatically reset, to rest on conference table 29 limit；
(4), after intelligence chair 28 resets, wireless charger 23 starts to charge for the accumulator 6 of intelligence chair 28, until fully charged
Or start again at complete charge after work, make the electricity of intelligence chair 28 keep sufficient state.
Claims (5)
1. one kind can position, from the meeting room intelligence chair of walking, it is characterised in that: it is followed successively by from top to bottom: seat, chair
Location label, cabinet, seat stearing motor, seat electronic compass, deflecting roller motor, accumulator, moving wheel motor, motor drive
Controller, deflecting roller electronic compass, moving wheel, deflecting roller and Wireless charging coil；Described under-seat is provided with chair lower limb, and seat
Being rotationally connected with chair lower limb, chair lower limb lower end is provided with universal wheel, described seat stearing motor, chair location label and seat electronic compass
Being arranged on immediately below seat, cabinet is positioned at under-seat and fixing with chair lower limb is connected, deflecting roller motor, moving wheel motor, motor
Driving controller and accumulator to be respectively mounted in the chassis, the output shaft of seat stearing motor is connected with chair lower limb by gear train, turns
Being rotationally connected with cabinet by support to wheel, deflecting roller motor is connected with support by gear train；Described moving wheel passes through folding and unfolding
Mechanism is connected with chair lower limb lower end；Deflecting roller electronic compass is arranged in the rotating shaft of deflecting roller；Wireless charging coil is arranged on cabinet
The position of lower section ground proximity, Wireless charging coil is connected with storage battery, accumulator and motor drive controller and electric power storage
Pond all electrically connects with deflecting roller electronic compass, motor drive controller and seat stearing motor, seat electronic compass, deflecting roller electricity
Machine and moving wheel motor all electrically connect.
A kind of meeting room intelligence chair positioning, certainly walking the most according to claim 1, it is characterised in that: described receipts
Laying mechanism includes connecting rod, electric magnet and light spring, and connecting rod is ferromagnetic, and the lower end of connecting rod is rotationally connected with moving wheel, even
The upper end of bar is hinged with cabinet lower end or chair lower limb lower end；Light spring one end is connected with chair lower limb lower end, the light spring other end with
Connecting rod connects, and during naturalness, light spring can keep moving wheel to be in leaving the state of ground, and electric magnet is fixed on chair lower limb lower end
Just on the position of connecting rod, when the solenoid is energized, connecting rod can be adsorbed by electric magnet so that moving wheel contacts with ground,
When electric magnet power-off, connecting rod resets under the effect of light spring so that moving wheel disengages with ground；Moving wheel motor and fortune
Driving wheel is in transmission connection.
A kind of meeting room intelligence chair positioning, certainly walking the most according to claim 2, it is characterised in that: described fortune
Driving wheel motor is in transmission connection with moving wheel by chain.
A kind of meeting room intelligence chair positioning, certainly walking the most according to claim 2, it is characterised in that: described company
The upper end of bar is hinged with chair lower limb lower end.
A kind of meeting room intelligence chair positioning, certainly walking the most according to claim 1, it is characterised in that: described chair
Lower limb is provided with gear ring, the axis of gear ring and the dead in line of chair lower limb upper end, and the output shaft of seat stearing motor passes through gear and tooth
Circle connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718503.1A CN106308183B (en) | 2016-08-24 | 2016-08-24 | A kind of meeting room intelligence chair for positioning, walking certainly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718503.1A CN106308183B (en) | 2016-08-24 | 2016-08-24 | A kind of meeting room intelligence chair for positioning, walking certainly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106308183A true CN106308183A (en) | 2017-01-11 |
| CN106308183B CN106308183B (en) | 2019-04-19 |
Family
ID=57791344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610718503.1A Active CN106308183B (en) | 2016-08-24 | 2016-08-24 | A kind of meeting room intelligence chair for positioning, walking certainly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106308183B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108937268A (en) * | 2018-06-11 | 2018-12-07 | 郭明 | A kind of chair of the park with function of keeping off the rain |
| CN108937277A (en) * | 2018-09-04 | 2018-12-07 | 安吉新芯科技有限公司 | A kind of chair with bass playing function |
| CN108968480A (en) * | 2018-07-25 | 2018-12-11 | 安吉新芯科技有限公司 | A kind of massaging, working chair with wireless charging device |
| CN109008376A (en) * | 2018-07-25 | 2018-12-18 | 安吉新芯科技有限公司 | A kind of electronic air bag cushion with wireless charging device |
| CN109760454A (en) * | 2018-12-24 | 2019-05-17 | 广东海洋大学 | A kind of intelligence pen container and its control method |
| CN110576259A (en) * | 2019-08-07 | 2019-12-17 | 徐州市茗尧机械制造有限公司 | Welding machine tool suitable for steel plate machining |
| CN110754829A (en) * | 2019-11-15 | 2020-02-07 | 青岛泽昊汽车配件有限公司 | Novel electric lifting chair |
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| US5954393A (en) * | 1998-05-28 | 1999-09-21 | Haworth, Inc. | Chair with removable worksurface |
| CN201602404U (en) * | 2009-11-13 | 2010-10-13 | 马全海 | Intelligent electric chair of library |
| CN103385791A (en) * | 2013-08-01 | 2013-11-13 | 济南大学 | Multifunctional wheelchair controlled by postures of disabled person, and control method |
| CN104433347A (en) * | 2014-11-21 | 2015-03-25 | 安徽省库仑动力自动化科技有限公司 | Meeting room chairs capable of going back to original position automatically |
| CN104605650A (en) * | 2014-12-25 | 2015-05-13 | 合肥康胜达智能科技有限公司 | A movable intelligent chair |
| CN205410471U (en) * | 2016-03-10 | 2016-08-03 | 山东科技大学 | Automatic seek mark playback office chair |
| CN205457425U (en) * | 2016-03-17 | 2016-08-17 | 南京工程学院 | Automatic missing chair |
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| CN1030350A (en) * | 1988-05-14 | 1989-01-18 | 高长德 | Self-propelled working seat |
| US5954393A (en) * | 1998-05-28 | 1999-09-21 | Haworth, Inc. | Chair with removable worksurface |
| CN201602404U (en) * | 2009-11-13 | 2010-10-13 | 马全海 | Intelligent electric chair of library |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108937268A (en) * | 2018-06-11 | 2018-12-07 | 郭明 | A kind of chair of the park with function of keeping off the rain |
| CN108968480A (en) * | 2018-07-25 | 2018-12-11 | 安吉新芯科技有限公司 | A kind of massaging, working chair with wireless charging device |
| CN109008376A (en) * | 2018-07-25 | 2018-12-18 | 安吉新芯科技有限公司 | A kind of electronic air bag cushion with wireless charging device |
| CN108968480B (en) * | 2018-07-25 | 2021-01-29 | 安吉新芯科技有限公司 | Massage office chair with wireless charging device |
| CN109008376B (en) * | 2018-07-25 | 2021-04-02 | 安吉新芯科技有限公司 | Electric airbag cushion with wireless charging device |
| CN108937277A (en) * | 2018-09-04 | 2018-12-07 | 安吉新芯科技有限公司 | A kind of chair with bass playing function |
| CN108937277B (en) * | 2018-09-04 | 2024-04-26 | 佛山市傲龙电竞家具有限公司 | Chair with bass playing function |
| CN109760454A (en) * | 2018-12-24 | 2019-05-17 | 广东海洋大学 | A kind of intelligence pen container and its control method |
| CN110576259A (en) * | 2019-08-07 | 2019-12-17 | 徐州市茗尧机械制造有限公司 | Welding machine tool suitable for steel plate machining |
| CN110754829A (en) * | 2019-11-15 | 2020-02-07 | 青岛泽昊汽车配件有限公司 | Novel electric lifting chair |
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| Publication number | Publication date |
|---|---|
| CN106308183B (en) | 2019-04-19 |
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Effective date of registration: 20200603 Address after: 361000 Room 501, No.85, Xiaguang Dongli, Haicang District, Xiamen City, Fujian Province Patentee after: Xiamen Jiupin sesame Information Technology Co.,Ltd. Address before: 315505 Zhejiang city of Ningbo province Fenghua Xining West Road No. 50-2 Patentee before: NINGBO VORIAS MACHINERY TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20200717 Address after: 313000 Zhong Guan Zhen Dong Ba Dou Cun Xing Xing Qiao Bei Qu, Deqing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang Damin Furniture Co.,Ltd. Address before: 361000 Room 501, No.85, Xiaguang Dongli, Haicang District, Xiamen City, Fujian Province Patentee before: Xiamen Jiupin sesame Information Technology Co.,Ltd. |
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Address after: Room 202, 2nd Floor, Building 4, No. 818 Tianning Avenue, Tianning Town, Jiashan County, Jiaxing City, Zhejiang Province, 314100 Patentee after: Zhejiang Damin Furniture Co.,Ltd. Country or region after: China Address before: 313000 Gaoxing bridge, dongbadou village, Zhongguan Town, Deqing County, Huzhou City, Zhejiang Province Patentee before: Zhejiang Damin Furniture Co.,Ltd. Country or region before: China |