CN106667101B - Chair foot rest device - Google Patents
Chair foot rest device Download PDFInfo
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- CN106667101B CN106667101B CN201510760200.1A CN201510760200A CN106667101B CN 106667101 B CN106667101 B CN 106667101B CN 201510760200 A CN201510760200 A CN 201510760200A CN 106667101 B CN106667101 B CN 106667101B
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- 239000007787 solid Substances 0.000 claims description 2
- 230000007958 sleep Effects 0.000 abstract description 9
- 230000006378 damage Effects 0.000 abstract description 8
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- 238000000034 method Methods 0.000 description 2
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
Chair foot rest device of the present invention is made of connecting seat assembly, three bar assemblies, footrest component and positioning component.Connecting seat assembly is connected in below chair seat tool, three bar assembly former pieces are connected with the front connector of connecting seat assembly, rear connectors respectively with the upper end of consequent, former piece is connected with the horizontal element of three bar assemblies respectively with the lower end of consequent, footrest component is connected on horizontal element, positioning component is arranged between connecting seat assembly and three bar assemblies and thus forms four-bar mechanism/parallelogram mechanism.By operation main operation handle and secondary operation handle or pull-push piece, footrest component can be navigated to forward to highest or need position, to be retracted under chair backward.Lamps structure of the present invention is simple, practical, it operates convenient, reliable, cooperate with the chair back, become sitting posture to lie or semi-lying, but it is not limited to solve the problems, such as to lie or semi-lying sleep/rest leg rest, its additional function can be increased easily on newly design chair or original chair, well solve or mitigate the harm of sitting race sitting bring.
Description
Technical field
The present invention relates to technical field of furniture, specifically chair foot rest device.
Background technique
Sitting, at the animation of modern.According to authoritative media report, sitting does not only result in organ damage, muscle moves back
Change, also injures the heart, backbone, brain and enteron aisle.In order to change or mitigate the harm of sitting race sitting bring, one kind that people attempt
Method is to increase to lie or semi-lying sleep/rest additional function on chair.Such as:
1) application No. is 2013106788979 " chairs for being suitble to afternoon nap of students ", by panel, head rest, head rest, branch
It bar, horizontal support and entrusts to form.Panel and backrest form the chair of four legs.The upper end of backrest connects head rest, and head rest lower end connects
Strut is connect, strut passes through the upper end of backrest and the horizontal support of centre, has a screw among the back side of horizontal support, resist strut.Head
It entrusts at the both ends of support.Entrust arc-shaped, arc inner face is cushion, and entrusting can upper and lower 90 rotation.Head rest can move up,
Adjust position.When afternoon nap of students, head rest position is adjusted, puts down and entrusts, so that it may comfortable afternoon nap.
2) application No. is 2013101261451 " chairs " by the chair back, seat and chair leg composition, and seat front end passes through spring
Hinge is connected with an adjustable plate, and chair leg end is connected with idler wheel, and idler wheel can be turned up, and plate can pass through two side slideway pull knot in outside plate
Structure carries out pull.Under the functional conditions that chair meets general folding seat, the length adjustment of chair can be also carried out as needed, separately
Outside, the idler wheel that can be turned up fix chair can also slidably, show a variety of use function and states
3) " a kind of chair frame structure " of Patent No. ZL 2013205688201, chair base frame is rotationally connected with
The footrest rack, the regulating mechanism for being unfolded or collapsing the footrest rack of described chair base frame one end, the regulating mechanism include
Two are rotationally connected with the pin-joint piece of the chair base frame two sides respectively, are rotationally connected with pushing away between two pin-joint pieces
Bar, one end are rotationally connected with the pin-joint piece, the other end be rotationally connected with the connecting rod of the footrest rack, act on the push rod from
And the pin-joint piece is made to be relatively rotatable to each other the first driving mechanism in the chair base frame: the dumpling contact pin and the seat frame
It is rotatablely connected place axis between frame where rotation connection between axis, the pin-joint piece and the push rod, there is spacing between two axis,
The present invention blocks foot prop and can individually adjust, and the first driving mechanism need to only acted, therefore easy to operate and laborsaving.
4) Patent No.: a kind of " footrest rack suitable for chair " of ZL20142039833, including support rod, toe board,
The slide being slidably socketed with the support rod；The slide includes seat shell, is located at the support rod outer wall and the seat shell inner wall
Between ball, be socketed on that the support rod is outer and fixing sleeve is set in the seat shell and has for limiting the ball position
Through-hole balladeur train；The balladeur train section is square, and is engaged by consistent first halfbody of structure with the second halfbody；This reality
Have with support bar and slide and slides smoothness well.
The first case of above-mentioned technology only solves the problems, such as that student is seated and sleeps, cannot mitigate the harm of sitting.Second
Example, third example are that sitting harm is solved or mitigated from the angle of whole chair, increase and lie or the additional function of semi-lying sleep/rest
Can, the scope of application has limitation, and structure is more complicated.4th is solved or subtracts from a kind of angle of chair leg rest attachment
Light sitting harm and chair back cooperation, increasing chair can lie or semi-lying sleep/rest additional function, and structure is simple, practical,
It is also convenient for easily increasing its additional function on the basis of original chair.But the angle of this " footrest rack of chair " cannot be adjusted
It is whole；The operation can only be pulled out, promoted, operates more original, only solves and lies or semi-lying sleep/rest leg rest is asked
Topic.
Summary of the invention
The main object of the present invention is intended to provide a kind of chair foot rest device.Its lamps structure is simple, practical, operate it is convenient,
Reliably cooperate with the chair back, become sitting posture to lie or semi-lying, but is not limited to solve the problems, such as to lie or semi-lying sleep/rest leg rest,
Its additional function can be increased easily on newly design chair or original chair.Since foot rest device position is adjustable, expand suitable
With range, the harm of sitting race sitting bring can be better solved or mitigated.
In order to reach above-mentioned main purpose, the present invention is realized by following technical proposals.It is mainly by attachment base
Component, three bar assemblies, footrest component and four part of positioning component composition.The connection frame of the connecting seat assembly is connected in chair
Below seat tool, it is connected with two pieces connector on the connection frame, the connector is connected to before connection frame front is
Connector, it is rear connectors that the connector, which is connected to connection frame rear portion, and three bar assemblies have two groups, and setting is even
The joint chair component left side is left three bar assemblies, and being arranged on the right of connecting seat assembly is right three bar assemblies, the three bar group of a left side
Part is identical with the size and shape of three bar assembly of the right side, and three bar assemblies are made of vertical member and horizontal element, described
Vertical member be divided into former piece and consequent, the former piece is divided into left front part and right former piece, and the consequent is divided into left back part and the right side
Consequent, the horizontal element are divided into left horizontal element and right horizontal element, and the upper end of the left front part and left back part is respectively and institute
The front connector stated is connected with rear connectors, the upper end of the right former piece and right consequent respectively with the front connector and
Rear connectors connection, the left horizontal element rear end and somewhere are movable with the lower end of the left back part and left front part respectively
Connection, the right horizontal element rear end and somewhere are flexibly connected with the lower end of the right consequent and right former piece respectively, institute
Footrest component is connected on the left horizontal element and right horizontal element stated.Four bar machines of the connecting seat assembly and three bar assemblies composition
Structure is parallelogram mechanism, and the positioning component is arranged between connecting seat assembly and three bar assemblies, the attachment base
The connector of component and the connection frame are flexibly connected, and stretch in connection frame outside described connector one end, described outer to stretch in
The end of the connector of connection frame is fixed with the main operation handle of the positioning component, the drive rod of the positioning component and
Hole at the suitable position of the two pieces vertical member of three bar assemblies is flexibly connected, the one end of the drive rod and described
Main operation handle hole be flexibly connected and the positioning component secondary operation handle be connected, on the drive rod be connected
There is the location hook of positioning component, is fixed with the shifting part of positioning component on the connector, the shifting part and described
Drive rod connects, and the reinforcement of the positioning component is fixed at the outer suitable position for stretching in connection frame of the connector
Part, the hole of the other end of the reinforcer and the drive rod are flexibly connected.
The location hook of the positioning component is the double hook location hook for having preceding hook and rear hook.
Hook member is provided on the connection frame, the location hook can be connected with the hook member.
By above structure, the operating method of chair foot rest device (is by parallelogram mechanism of four-bar mechanism as follows
Example):
1. at footrest component when the preceding extreme higher position of chair, when location hook is double hook location hook and drive rod and left back part and the right side
When the hole of consequent is flexibly connected, the preceding hook for the double hook location hook being fixed on drive rod hooks front connector；When location hook is double
When hook location hook and drive rod are flexibly connected with the hole of left front part and right former piece, before being fixed on the double hook location hook on drive rod
Hook hooks the hook member for being connected in connection frame front.At this point, secondary operation handle and main operation handle have a suitable angle.Use hand
It holds with a firm grip main operation handle and secondary operation handle, forces secondary operation handle to rotate and close up with main operation handle, the secondary operation of rotation
The double hook location hook rotation that handle drives drive rod and is connected thereon, the preceding hook of double hook location hook disengage front connector or hook
After part, then main operation handle and the secondary operation handle closed up with it is made to rotate backward together, the main manipulator grip strip of rotation is dynamic to be connected
Fitting, shifting part and drive rod rotation make parallelogram mechanism/footrest component retraction, certain of rear portion are located in by locating piece
When one position, pull-up pair operation handle, the secondary operation handle of rotation drives drive rod and the rotation of double hook location hook, double hook location hook
Rear hook hook rear connectors or be connected in the hook member at connection frame rear portion, parallelogram mechanism/footrest component is positioned in
Lower rear positions.Contrary operation makes parallelogram mechanism/footrest component be positioned again at the highest position before chair.
2. at footrest component when the preceding extreme higher position of chair, when location hook only before hook and drive rod and left back part and right consequent
Hole be flexibly connected when, the preceding hook for the location hook being fixed on drive rod hooks front connector；When the only preceding hook of location hook and biography
When lever is flexibly connected with the hole of left front part and right former piece, the preceding hook for the location hook being fixed on drive rod, which hooks, is connected in connection
The hook member of frame front.At this point, secondary operation handle and main operation handle have a suitable angle.With hold tight main operation handle and
Secondary operation handle forces secondary operation handle to rotate and closes up with main operation handle, the secondary operation handle of rotation drive drive rod and
The location hook rotation being connected thereon, after the preceding hook of location hook disengages front connector or hook member, parallelogram mechanism/leg rest
Component is retracted, and positioned by elastic component under its self weight and the effect of elastic component elastic force toward the chair back lower place.Pull-up is close together
Main operation handle and secondary operation handle, main operation handle rotation, and by connector, shifting part and drive rod by parallel four side
Shape mechanism/footrest component is lifted before chair, and when locating extreme higher position, the secondary operation handle of pull-up pair operation handle, rotation drives transmission
Bar and location hook rotation, the preceding hook of location hook hook front connector or hook member, parallelogram mechanism/footrest component quilt again
Highest position before being positioned again at chair.
In conclusion lamps structure of the present invention is simple, practical, operate the cooperation of convenient, the reliable and chair back, become sitting posture to lie or
Semi-lying, but be not limited to solve the problems, such as to lie or semi-lying sleep/rest leg rest, it can be easily in newly design chair or original chair
On, increase its additional function.It is applied widely since foot rest device position is adjustable, it can better solve or to mitigate sitting race long
Sit bring harm.Such as: " the body dynamic formula ab lounge main structure " of Patent No. ZL201520315657.7, through the invention,
Foot rest device is adjusted to need position, so that it may realize body massaging and activity to the drawing of pedaling of foot rest device by foot；If
Massage part is provided on foot rest device, it can be achieved that massage to foot.
Detailed description of the invention
The optimum implementation that the present invention will now be explained with reference to the accompanying drawings.
Fig. 1 is a kind of side schematic view of the chair foot rest device of best form of implementation；
Fig. 2 is the A of Fig. 1 to schematic diagram.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawing.
See Fig. 1 and Fig. 2.This example is made of connecting seat assembly 1, three bar assemblies 2, footrest component 3 and positioning component 4.Even
The connection frame 1/1 of joint chair component 1 is connected in below chair seat tool 5, and two pieces connector 2/1, two pieces are connected on connection frame 1/1
Connector 2/1 be it is cylindric, be parallel to each other, be connected to 1/1 front of connection frame connector 2/1 be 1/2/1 (Fig. 2 of front connector
Shown in upper dotted line), the connector 2/1 for being connected to 1/1 rear portion of connection frame is rear connectors 2/2/1 (on Fig. 2 shown in dotted line), connection
Hook member 3/1 (on Fig. 2 shown in dotted line) and locating piece 4/1 (on Fig. 2 shown in dotted line), three bar assemblies 2 and company are provided on frame 1/1
The size for two parallelogram mechanisms that joint chair component 1 forms is identical, and it is left three bar groups that 1 left side of connecting seat assembly, which is arranged in,
Part 1/2, it is right three bar assemblies 2/2 that 1 the right of connecting seat assembly, which is arranged in, and the vertical member 3/2 of three bar assemblies 2 divides for former piece 1/3/
2 and consequent 2/3/2, former piece 1/3/2 divides for left front part 1/1/3/2 and right former piece 2/1/3/2, and consequent 2/3/2 divides for left back part 1/
2/3/2 and right consequent 2/2/3/2, the left front part 1/1/3/2 of left three bar assemblies 1/2 and the upper end difference of left back part 1/2/3/2
It is slidably connected with front connector 1/2/1 and rear connectors 2/2/1, the right former piece 2/1/3/2 and right consequent 2/ of right three bar assemblies 2/2
2/3/2 upper end is slidably connected with front connector 1/2/1 and rear connectors 2/2/1 respectively, the horizontal element 4/2 of three bar assemblies 2
It is divided into left horizontal element 1/4/2 and right horizontal element 2/4/2,1/4/2 rear end of left horizontal element of left three bar assemblies 1/2 and medium position
The lower end with left back part 1/2/3/2 and left front part 1/1/3/2 is slidably connected respectively, the right horizontal element 2/ of right three bar assemblies 2/2
The lower end of 4/2 rear end and medium position respectively with right consequent 2/2/32 and right former piece 2/1/3/2 is slidably connected, left horizontal element
1/4/2 and right horizontal element 2/4/2 sponson on be fixed with the toe board 1/3 of footrest component 3.Connect before connecting seat assembly 1
Fitting 1/2/1 and connection frame 1/1 are slidably connected, and the end of front connector 1/2/1 is fixed with the main operation handle 1/ of positioning component 4
4, the hole of the left front part 1/1/3/2 and right former piece 2/1/3/2 of the drive rod 2/4 of positioning component 4 and three bar assemblies 2 is slidably matched,
The one end of drive rod 2/4 is slidably matched with the hole of main operation handle 1/4 solid with the secondary operation handle 3/4 of positioning component 4 respectively
Even, it is fixed with location hook 4/4 (on Fig. 1 shown in dotted line) on drive rod 2/4, location hook 4/4 is to have the double hook of preceding hook and rear hook fixed
Shifting part 5/4 is fixed in 1/4/4 front connector 1/2/1 of hook of position, shifting part 5/4 and drive rod 2/4 connect, front connector 1/2/
Reinforcer 6/4 is fixed on 1, one end of reinforcer 6/4 and drive rod 2/4 are slidably connected.Reinforcer 6/4 plays increase rigidity and makees
With.Double dot dash line graphical representation footrest component 3 below Fig. 1 is in the state of lower rear position.
By above structure, the operating method of the optimum implementation of chair foot rest device is as follows:
At footrest component 3 when the preceding extreme higher position of chair, it is fixed on the preceding hook of the double hook location hook 1/4/4 on drive rod 2/4
Hook the hook member 3/1 for being connected in 1/1 front of connection frame.At this point, secondary operation handle 3/4 and main operation handle 1/4 have it is suitable
Angle.With tight main operation handle 1/4 and secondary operation handle 3/4 is held, chasing after makes the secondary rotation of operation handle 3/4 and and main manipulator
Handle 1/4 closes up, and the secondary operation handle 3/4 of rotation drives drive rod 2/4 and the double hook location hook 1/4/4 being connected thereon to rotate,
After the preceding hook of double hook location hook 1/4/4 disengages hook member 3/1, the secondary operation handle 3/4 that makes main operation handle 1/4 and close up with it
It rotates backward together, the main operation handle 1/4 of rotation drives front connector 1/2/1, shifting part 6/4 and drive rod 2/4 to rotate, and makes
3 retraction of parallelogram mechanism/footrest component, and by after the positioning of locating piece 4/1, pull-up pair operation handle 3/4, the secondary of rotation is grasped
Making handle 3/4 drives drive rod 2/4 and double hook location hook 1/4/4 to rotate, and the rear hook of double hook location hook 1/4/4 hooks rear connectors
2/2/1, parallelogram mechanism/footrest component 3 is positioned in lower rear positions.Contrary operation, parallelogram mechanism/leg rest
Component 3 is positioned again at the highest position before chair.
In conclusion lamps structure of the present invention is simple, practical, operate the cooperation of convenient, the reliable and chair back, become sitting posture to lie or
Semi-lying, but be not limited to solve the problems, such as to lie or semi-lying sleep/rest leg rest, it can be easily in newly design chair or original chair
On son, increase its additional function.It is applied widely since foot rest device position is adjustable, it can better solve or mitigate sitting race
The harm of sitting bring.Such as: " the body dynamic formula ab lounge main structure " of Patent No. ZL201520315657.7, by this hair
It is bright, foot rest device is adjusted to need position, so that it may realize body massaging and activity to the drawing of pedaling of foot rest device by foot: such as
Massage part is provided on fruit foot rest device, it can be achieved that massage to foot.
Claims (3)
1. a kind of chair foot rest device, it is mainly by four parts such as connecting seat assembly, three bar assemblies, footrest component and positioning components
Composition, which is characterized in that the connection frame (1/1) of the connecting seat assembly (1) is connected in below chair seat tool (5), described
Connection frame (1/1) on be connected with two pieces connector (2/1), the connector (2/1) is connected to connection frame (1/1) front
For front connector (1/2/1), it is rear connectors (2/2/1) that the connector (2/1), which is connected to connection frame (1/1) rear portion,
Three bar assemblies (2) have two groups, and setting is left three bar assemblies (1/2) on connecting seat assembly (1) left side, and setting is connecting
It is right three bar assemblies (2/2), three bar assembly of a left side (1/2) and three bar assembly of the right side (2/2) on the right of holder assembly (1)
Size and shape it is identical, three bar assemblies (2) are made of vertical member (3/2) and horizontal element (4/2), the vertical member
(3/2) it is divided into former piece (1/3/2) and consequent (2/3/2), the former piece (1/3/2) is divided into left front part (1/1/3/2) He Youqian
Part (2/1/3/2), the consequent (2/3/2) are divided into left back part (1/2/3/2) and right consequent (2/2/3/2), the level
Part (4/2) is divided into left horizontal element (1/4/2) and right horizontal element (2/4/2), the left front part (1/1/3/2) and left back part (1/
2/3/2) upper end is connected with the front connector (1/2/ 1) and rear connectors (2/2/1) respectively, the right former piece
(2/1/3/2) and the upper end of right consequent (2/2/3/2) respectively with the front connector (1/2/1) and rear connectors (2/2/
1) connect, left horizontal element (1/4/2) rear end and somewhere respectively with the left back part (1/2/3/2) and left front part
(1/1/3/2) lower end is flexibly connected, right horizontal element (2/4/2) rear end and somewhere respectively with the right consequent
(2/2/3/2) it is flexibly connected with the lower end of right former piece (2/1/3/2), the left horizontal element (1/4/2) and right horizontal element (2/
4/2) it is connected on footrest component (3), the connecting seat assembly (1) is parallel with the four-bar mechanism that three bar assemblies (2) form
Quadrangular mechanism, the positioning component (4) are arranged between connecting seat assembly (1) and three bar assemblies (2), the attachment base
The connector (2/1) and the connection frame (1/1) of component (1) are flexibly connected, the company of stretching in outside the connector (2/1) one end
It connects frame (1/1), the end of the outer connector (2/1) for stretching in connection frame (1/1) is fixed with the positioning component (4)
Main operation handle (1/4), the two pieces vertical member of the drive rod (2/4) of the positioning component (4) and three bar assemblies (2)
(3/2) hole at suitable position is flexibly connected, the one end of the drive rod (2/4) and the main operation handle (1/
4) hole is flexibly connected and the secondary operation handle (3/4) of the positioning component (4) is connected, solid on the drive rod (2/4)
It is connected with the location hook (4/4) of positioning component (4), the shifting part (5/ of positioning component (4) is fixed on the connector (2/1)
4), the shifting part (5/4) and the drive rod (2/4) connection, the outer of the connector (2/1) stretch in connection frame
(1/1) be fixed with the reinforcer (6/4) of the positioning component (4) at suitable position, the reinforcer (6/4) it is another
The hole at end and the drive rod (2/4) are flexibly connected.
2. chair foot rest device according to claim 1, which is characterized in that the location hook (4/ of the positioning component (4)
It 4) is the double hook location hook (1/4/4) for having preceding hook and rear hook.
3. chair foot rest device according to claim 1, which is characterized in that be provided with extension on the connection frame (1/1)
Hook (3/1), the location hook (4/4) can be connected with the hook member (3/1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510760200.1A CN106667101B (en) | 2015-11-06 | 2015-11-06 | Chair foot rest device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510760200.1A CN106667101B (en) | 2015-11-06 | 2015-11-06 | Chair foot rest device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106667101A CN106667101A (en) | 2017-05-17 |
| CN106667101B true CN106667101B (en) | 2019-11-19 |
Family
ID=58864452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510760200.1A Active CN106667101B (en) | 2015-11-06 | 2015-11-06 | Chair foot rest device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106667101B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567463A (en) * | 2017-09-28 | 2019-04-05 | 江山市奇栖正机电科技有限公司 | A kind of multiposition thing to sit on foot rest device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3072908B2 (en) * | 1990-09-28 | 2000-08-07 | 松下電工株式会社 | Reclining chair |
| DE29707946U1 (en) * | 1997-05-02 | 1997-07-03 | Ferdinand Lusch GmbH & Co. KG, 33649 Bielefeld | Seating |
| US6036268A (en) * | 1997-09-08 | 2000-03-14 | Larson; John E. | Foot rest mechanism for a work chair |
| US6196631B1 (en) * | 1997-09-08 | 2001-03-06 | John E. Larson | Ergonomic footrests for ergonomic chairs |
| DE50203480D1 (en) * | 2001-06-29 | 2005-08-04 | Guenter Veith | Seating and / or reclining furniture with leg support |
| CN204032824U (en) * | 2014-07-18 | 2014-12-24 | 安吉宏峰气弹簧科技有限公司 | A kind of footrest rack being applicable to chair |
| CN205682829U (en) * | 2015-11-06 | 2016-11-16 | 杭州奇栖正科技开发有限公司 | Chair foot rest device |
-
2015
- 2015-11-06 CN CN201510760200.1A patent/CN106667101B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106667101A (en) | 2017-05-17 |
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Effective date of registration: 20191031 Address after: Jiangshan City, Zhejiang province Quzhou city Shimen town 324107 village Zhaitang Trillium Lane No. 7 Applicant after: JIANGSHAN QIQIZHENG ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Address before: Hangzhou City, Zhejiang province Xihu District 310024 double Town Luo Jia Dai No. 215 Applicant before: HANGZHOU QIQIZHENG TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Effective date of registration: 20240415 Address after: 528000, No. 21-3 Xinhui Road, Wusha Community, Daliang Street, Shunde District, Foshan City, Guangdong Province (Residence Declaration) Patentee after: Foshan Dexin Intelligent Technology Co.,Ltd. Country or region after: China Address before: 324107 No. 7, Zhai Tang Lane, Yanling village, Shimen Town, Jiangshan City, Quzhou, Zhejiang Patentee before: JIANGSHAN QIQIZHENG ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Country or region before: China |