CN104499860B - A kind of switch gate power adjustable multistage positioningly spring - Google Patents
A kind of switch gate power adjustable multistage positioningly spring Download PDFInfo
- Publication number
- CN104499860B CN104499860B CN201410660425.5A CN201410660425A CN104499860B CN 104499860 B CN104499860 B CN 104499860B CN 201410660425 A CN201410660425 A CN 201410660425A CN 104499860 B CN104499860 B CN 104499860B
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- spring
- drawing piece
- cam
- piston
- positioningly
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
- E05Y2900/132—Doors
Abstract
The present invention relates to a kind of switch gate power adjustable multistage positioningly spring.This floor spring includes valve body and central shaft, valve body chamber be respectively arranged at two ends with piston, bonnet and spring, movable intracavity is provided with upper drawing piece, main cam, auxiliary cam, lower drawing piece, big roller axle and trundle axle, connect on big roller axle and have live roller, connect on trundle axle and have cushion idler, main cam has the outline of continuous print arc-shaped curved surface, main cam is provided with breach, auxiliary cam has the outline of arc, the head of piston is provided with oil leak hole, being provided with check valve in oil leak hole, the top in movable chamber is provided with upper cover.Provide the benefit that: 1), this floor spring use double-cam structure, be possible not only to realize the location of 90 degree, can realize again 90～180 degree arbitrfary point position；2), this floor spring directly eliminate the connector such as pull bar of spring traditionally, replace and use the spring strength of adjustment of afterbody, thus have adjusted door leaf opening and closing dynamics.
Description
Technical field
The present invention relates to a kind of hydraulic door closer, especially relate to a kind of can arbitrfary point positions between 90～180 degree switch gate power adjustable multistage positioningly spring.
Background technology
Floor spring is a kind of hydraulic door closer, and only the device of its holddown spring is worm gear rather than rack-and-pinion.Because worm gear can forward and reverse rotate, so floor spring may be used for the door of bidirectional opening, door closer is then only used for the door of unidirectional unlatching.The worm gear arrangement of floor spring, the compression degree making spring is less than the door closer of rack pinion, and the arm of force that floor spring is closed the door is the shortest, so the quality of floor spring is higher to the dependency of structure design and machining accuracy.Door leaf additionally, due to bi-directional door has the biggest active force along door leaf plane to floor spring, so the gap of the service life of low-grade floor spring and top grade floor spring can be the biggest.
Current floor spring opening and closing and orientation angle are 90 degree, and angle is less than normal, and door leaf takes up room greatly, in the occasion that mobility of people is bigger, can put to no little inconvenience to personnel's trip, and little additionally, due to angle, door leaf is also easy to be damaged by external force collision.For solving this problem, market occurs in that some open and close angles can reach the floor spring between 90～180 degree, door leaf opening and closing dynamics can be adjusted, regulate between 2～No. 4 power, but can not position.For coordinating substantial amounts of flow of personnel, door leaf can be opened into 180 degree, owing to lacking positioning function, can be automatically switched off afterwards, and it is the most convenient to use.
Also have a kind of be capable of 90～180 degree open and position floor springs, but it is the absence of force adjustment function, the dynamics of door leaf opening and closing is uncontrollable, as notification number is: the floor spring of a kind of unidirectional unlatching 180 degree that the Chinese utility model patent of CN2467720Y provides, including housing, pull bar, axle center, spring, piston, it is characterized in that: there is evagination the both sides, front end of pull bar, on evagination porose, on axle center fluted, on axle center porose, hole on the bolt cylinder lever connecting rod of Nei You axle center, hole, roller steel core is had on another hole, centrifugal roller it is cased with outside roller steel core, two sections of relative rank broken strings are had on camber line outside axle center, there is block the front end of spring, the block of side coordinates with the rank broken string of camber line outside axle center, another block coordinates with centrifugal roller.Although this floor spring can increase door leaf opening angle, facilitate personnel to come in and go out, but the opening and closing dynamics of floor spring self is unadjustable, after long-time frequently unlatching, the elastic force of spring can be made to weaken, and axle center leakage of oil, causing floor spring to damage, and structure is complicated, manufacturing cost is higher.
Summary of the invention
The present invention be primarily directed to existing for existing floor spring cannot multipoint positioning, the uncontrollable problem of opening and closing dynamics, there is provided one both can regulate door leaf opening and closing dynamics, 90～180 degree can be realized again and open and the switch gate power adjustable multistage positioningly spring of location.
nullThe above-mentioned technical problem of the present invention is mainly addressed by following technical proposals: a kind of switch gate power adjustable multistage positioningly spring，Including valve body and central shaft，The valve body chamber communicated and movable chamber it is provided with in described valve body，Valve body chamber be respectively arranged at two ends with piston and bonnet，It is connected between piston with bonnet and has spring，Movable intracavity is from up to down sequentially provided with upper drawing piece、Main cam、Auxiliary cam and lower drawing piece，It is equipped with guide groove on upper drawing piece and lower drawing piece，Central shaft passes the guide groove of upper drawing piece and lower drawing piece and is vertically connected to activity intracavity，Main cam and auxiliary cam are all fixing with central shaft to be connected，Upper drawing piece is connected by big roller axle with lower drawing piece，Connect on big roller axle and have the live roller abutted with main cam，Main cam has the outline of continuous print arc-shaped curved surface，Main cam be provided with can with live roller with the use of breach，Auxiliary cam has the outline of arc，Connect on lower drawing piece and have trundle axle，Connect on trundle axle and have the cushion idler that can abut with auxiliary cam，The head of described piston is communicated with valve body chamber and the oil leak hole in movable chamber，Oil leak hole is provided with check valve，The head of piston is fixed between upper drawing piece and lower drawing piece，The top in movable chamber is provided with upper cover.This floor spring uses double-cam structure, central shaft upper end is connected with door-hinge, when door leaf is opened, central shaft drives main cam and auxiliary cam to rotate, the outer wheel face of drivewheel abuts with live roller, promote piston rearward movement, central shaft translates in upper drawing piece with the guide groove of lower drawing piece backward, when main cam turns to indentation, there, when opening 90 degree such as door leaf, live roller is connected in this breach, door leaf positions, when under external force, continue to increase door leaf opening angle, live roller departs from the constraint of breach, main cam turns to exceed breach point position, as door leaf is opened into position, arbitrfary point between 90～180 degree, driving cam closely will compress with this position, arbitrfary point, play positioning action.When door leaf cuts out, piston advances forward, drivewheel inverts, central shaft translates forward in upper drawing piece with the guide groove of lower drawing piece, now auxiliary cam abuts with cushion idler, places restrictions on the movement of central shaft, plays position-limiting action, therefore this floor spring is possible not only to realize the location of 90 degree, the location, arbitrfary point of 90～180 degree can be realized again.
As preferably, it is connected with force-regulating rod on described bonnet, the leading portion of force-regulating rod is provided with screw thread and stretches into valve chamber, the through bonnet of back segment of force-regulating rod also extends to the outside of bonnet, it is bolted with spring fastening on the leading portion of force-regulating rod, the outer wheel face of spring fastening is with the cavity wall in valve body chamber for threadeding, and one end of described spring is connected with piston, and the other end of spring is connected with spring fastening.This floor spring directly eliminates the connectors such as the pull bar of spring traditionally, replaces and uses the spring strength of adjustment of afterbody.When needs force adjustment, instrument can be used to rotate force-regulating rod, force-regulating rod rotates, drive spring fastening rotates, owing to spring fastening is spirally connected with valve body chamber, spring fastening can be fixed after rotating, and the length of corresponding spring is compressed, acting force of the spring is bigger, otherwise, rotate backward force-regulating rod, spring can be made to stretch, acting force of the spring is less, thus have adjusted door leaf opening and closing dynamics.
As preferably, described main cam entirety ovalize, side flat on main cam is provided with arc notch I, and on main cam, the both sides of evagination are equipped with arc notch II, arc notch I and arc notch II and all match with live roller.Arc notch I and arc notch II all can play positioning action with live roller snap-fit, and when main cam is rotated further, live roller can position in the arbitrfary point of arc notch I and arc notch II.
As preferably, described auxiliary cam ovalize, a male end of auxiliary cam is wedge angle, and another male end is plane.The outline of auxiliary cam is relevant to the outline of main cam, plays position-limiting action.
As preferably, the middle part of described force-regulating rod is provided with the location shaft shoulder of protrusion, and the inner end of bonnet is provided with the groove that can accommodate the location shaft shoulder, and the back segment of force-regulating rod is installed with spacing jump ring.The location shaft shoulder plays position-limiting action, prevents force-regulating rod from deviating from floor spring, and can guarantee that the centering of force-regulating rod.
As preferably, described force-regulating rod is provided with seal groove, and seal groove, between the location shaft shoulder and spacing jump ring, connects in seal groove and has sealing ring.Improve sealing, prevent leakage of oil.
As preferably, described upper drawing piece and lower drawing piece being equipped with aperture, connecting in aperture has pulling-on piece screw, and the head of piston is provided with the via being directed at described aperture, upper drawing piece and lower drawing piece and is fixed with piston by pulling-on piece screw.It is connected firmly stable.
As preferably, being provided with bearing I in described upper cover, the bottom in movable chamber is provided with bearing II, and bearing I is connected with the upper end of central shaft, and bearing II is connected with the lower end of central shaft.Bearing is for ensureing the perpendicularity of central shaft, the rotation that central shaft can be reliable and stable.
Therefore, the invention has the beneficial effects as follows: 1), this floor spring use double-cam structure, be possible not only to realize the location of 90 degree, can realize again 90～180 degree arbitrfary point position；2), this floor spring directly eliminate the connector such as pull bar of spring traditionally, replace and use the spring strength of adjustment of afterbody, thus have adjusted door leaf opening and closing dynamics.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of overall structure schematic diagram of the present invention；
Accompanying drawing 2 be in the present invention inner core part a kind of structural representation；
Accompanying drawing 3 is the A-A partial sectional view in accompanying drawing 2；
Accompanying drawing 4 is a kind of structural representation of upper drawing piece in the present invention；
Accompanying drawing 5 is a kind of structural representation of lower drawing piece in the present invention.
Shown in figure: 1-valve body, 2-central shaft, 3-valve body chamber, 4-activity chamber, 5-piston, 6-bonnet, 7-spring, 8-upper drawing piece, 9-lower drawing piece, 10-main cam, 11-auxiliary cam, 12-big roller axle, 13-live roller, 14-trundle axle, 15-cushion idler, 16-oil leak hole, 17-upper cover, 18-force-regulating rod, 19-spring fastening, 20-arc notch I, 21-arc notch II, 22-positions the shaft shoulder, the spacing jump ring of 23-, 24-sealing ring, 25-pulling-on piece screw, 26-bearing I, 27-bearing II.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment:
nullSuch as Figure of description 1、Shown in 2，A kind of switch gate power adjustable multistage positioningly spring，Including valve body 1 and central shaft 2，The valve body chamber 3 communicated and movable chamber 4 it is provided with in valve body，Valve body chamber be respectively arranged at two ends with piston 5 and bonnet 6，It is connected between piston with bonnet and has spring 7，Movable intracavity is from up to down sequentially provided with upper drawing piece 8、Main cam 10、Auxiliary cam 11 and lower drawing piece 9，Such as Figure of description 4、Shown in 5，It is equipped with guide groove on upper drawing piece and lower drawing piece，Central shaft passes the guide groove of upper drawing piece and lower drawing piece and is vertically connected to activity intracavity，Main cam and auxiliary cam are all fixing with central shaft to be connected，Upper drawing piece is connected by big roller axle 12 with lower drawing piece，Connect on big roller axle and have the live roller 13 abutted with main cam，As shown in Figure of description 3，Main cam has the outline of continuous print arc-shaped curved surface，Main cam be provided with can with live roller with the use of breach，Main cam entirety ovalize，Side flat on main cam is provided with arc notch I 20，On main cam, the both sides of evagination are equipped with arc notch II 21，Arc notch I and arc notch II all match with live roller，Auxiliary cam has the outline of arc，Auxiliary cam ovalize，One male end of auxiliary cam is wedge angle，Another male end is plane，Connect on lower drawing piece and have trundle axle 14，Connect on trundle axle and have the cushion idler 15 that can abut with auxiliary cam，The head of piston is communicated with valve body chamber and the oil leak hole 16 in movable chamber，Oil leak hole is provided with check valve，The head of piston is fixed between upper drawing piece and lower drawing piece，It is equipped with aperture on upper drawing piece and lower drawing piece，Connect in aperture and have pulling-on piece screw 25，The head of piston is provided with the via being directed at aperture，Upper drawing piece and lower drawing piece are fixed with piston by pulling-on piece screw，The top in movable chamber is provided with upper cover 17，Bearing I 26 it is provided with in upper cover，The bottom in movable chamber is provided with bearing II 27，Bearing I is connected with the upper end of central shaft，Bearing II is connected with the lower end of central shaft，Force-regulating rod 18 it is connected with on bonnet，The leading portion of force-regulating rod is provided with screw thread and stretches into valve chamber，The through bonnet of back segment of force-regulating rod also extends to the outside of bonnet，Spring fastening 19 it is bolted with on the leading portion of force-regulating rod，The outer wheel face of spring fastening with the cavity wall in valve body chamber for threadeding，One end of spring is connected with piston，The other end of spring is connected with spring fastening，The middle part of force-regulating rod is provided with the location shaft shoulder 22 of protrusion，The inner end of bonnet is provided with the groove that can accommodate the location shaft shoulder，Spacing jump ring 23 it is installed with on the back segment of force-regulating rod，Force-regulating rod is provided with seal groove，Seal groove is between the location shaft shoulder and spacing jump ring，Connect in seal groove and have sealing ring 24.
This floor spring uses double-cam structure, central shaft upper end is connected with door-hinge, when door leaf is opened, central shaft drives main cam and auxiliary cam to rotate, the outer wheel face of drivewheel abuts with live roller, promote piston rearward movement, central shaft translates in upper drawing piece with the guide groove of lower drawing piece backward, when main cam turns to indentation, there, when opening 90 degree such as door leaf, live roller is connected in this breach, door leaf positions, when under external force, continue to increase door leaf opening angle, live roller departs from the constraint of breach, main cam turns to exceed breach point position, as door leaf is opened into position, arbitrfary point between 90～180 degree, driving cam closely will compress with this position, arbitrfary point, play positioning action.When door leaf cuts out, piston advances forward, drivewheel inverts, central shaft translates forward in upper drawing piece with the guide groove of lower drawing piece, now auxiliary cam abuts with cushion idler, places restrictions on the movement of central shaft, plays position-limiting action, therefore this floor spring is possible not only to realize the location of 90 degree, the location, arbitrfary point of 90～180 degree can be realized again.
This floor spring directly eliminates the connectors such as the pull bar of spring traditionally, replaces and uses the spring strength of adjustment of afterbody.When needs force adjustment, instrument can be used to rotate force-regulating rod, force-regulating rod rotates, drive spring fastening rotates, owing to spring fastening is spirally connected with valve body chamber, spring fastening can be fixed after rotating, and the length of corresponding spring is compressed, acting force of the spring is bigger, otherwise, rotate backward force-regulating rod, spring can be made to stretch, acting force of the spring is less, thus have adjusted door leaf opening and closing dynamics.
Should be understood that this embodiment is merely to illustrate the present invention rather than limits the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Claims (7)
- null1. a switch gate power adjustable multistage positioningly spring，Including valve body and central shaft，It is characterized in that，The valve body chamber communicated and movable chamber it is provided with in described valve body，Valve body chamber be respectively arranged at two ends with piston and bonnet，It is connected between piston with bonnet and has spring，Movable intracavity is from up to down sequentially provided with upper drawing piece、Main cam、Auxiliary cam and lower drawing piece，It is equipped with guide groove on upper drawing piece and lower drawing piece，Central shaft passes the guide groove of upper drawing piece and lower drawing piece and is vertically connected to activity intracavity，Main cam and auxiliary cam are all fixing with central shaft to be connected，Upper drawing piece is connected by big roller axle with lower drawing piece，Connect on big roller axle and have the live roller abutted with main cam，Main cam has the outline of continuous print arc-shaped curved surface，Main cam be provided with can with live roller with the use of breach，Auxiliary cam has the outline of arc，Connect on lower drawing piece and have trundle axle，Connect on trundle axle and have the cushion idler that can abut with auxiliary cam，The head of described piston is communicated with valve body chamber and the oil leak hole in movable chamber，Oil leak hole is provided with check valve，The head of piston is fixed between upper drawing piece and lower drawing piece，The top in movable chamber is provided with upper cover，It is equipped with aperture on described upper drawing piece and lower drawing piece，Connect in aperture and have pulling-on piece screw，The head of piston is provided with the via being directed at described aperture，Upper drawing piece and lower drawing piece are fixed with piston by pulling-on piece screw.
- A kind of switch gate power adjustable multistage positioningly spring the most according to claim 1, it is characterized in that, it is connected with force-regulating rod on described bonnet, the leading portion of force-regulating rod is provided with screw thread and stretches into valve chamber, the through bonnet of back segment of force-regulating rod also extends to the outside of bonnet, and the leading portion of force-regulating rod is bolted with spring fastening, the outer wheel face of spring fastening with the cavity wall in valve body chamber for threadeding, one end of described spring is connected with piston, and the other end of spring is connected with spring fastening.
- A kind of switch gate power adjustable multistage positioningly spring the most according to claim 1, it is characterized in that, described main cam entirety ovalize, side flat on main cam is provided with arc notch I, on main cam, the both sides of evagination are equipped with arc notch II, arc notch I and arc notch II and all match with live roller.
- A kind of switch gate power adjustable multistage positioningly spring the most according to claim 1, it is characterised in that described auxiliary cam ovalize, a male end of auxiliary cam is wedge angle, and another male end is plane.
- A kind of switch gate power adjustable multistage positioningly spring the most according to claim 2, it is characterized in that, the middle part of described force-regulating rod is provided with the location shaft shoulder of protrusion, and the inner end of bonnet is provided with the groove that can accommodate the location shaft shoulder, and the back segment of force-regulating rod is installed with spacing jump ring.
- 6., according to a kind of switch gate power adjustable multistage positioningly spring described in claim 2 or 5, it is characterised in that described force-regulating rod is provided with seal groove, seal groove, between the location shaft shoulder and spacing jump ring, connects in seal groove and has sealing ring.
- A kind of switch gate power adjustable multistage positioningly spring the most according to claim 1, it is characterized in that, being provided with bearing I in described upper cover, the bottom in movable chamber is provided with bearing II, bearing I is connected with the upper end of central shaft, and bearing II is connected with the lower end of central shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410660425.5A CN104499860B (en) | 2014-11-19 | 2014-11-19 | A kind of switch gate power adjustable multistage positioningly spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410660425.5A CN104499860B (en) | 2014-11-19 | 2014-11-19 | A kind of switch gate power adjustable multistage positioningly spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104499860A CN104499860A (en) | 2015-04-08 |
| CN104499860B true CN104499860B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410660425.5A Active CN104499860B (en) | 2014-11-19 | 2014-11-19 | A kind of switch gate power adjustable multistage positioningly spring |
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| CN (1) | CN104499860B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695391A (en) * | 2018-04-24 | 2019-04-30 | 青岛海尔股份有限公司 | Door closer and refrigerator with the door closer |
| CN109914956A (en) * | 2019-04-08 | 2019-06-21 | 台州市计量设备技术校准中心 | A kind of limit shaft and preparation method thereof on floor spring |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT991606B (en) * | 1972-05-29 | 1975-08-30 | Milly Lucien | AUTOMATIC DOOR OPERATION DEVICE |
| GB2479145A (en) * | 2010-03-29 | 2011-10-05 | Ingersoll Rand Security Technologies Ltd | Door closer having two springs |
| CN101975006B (en) * | 2010-10-28 | 2013-10-02 | 肇庆市志成气动有限公司 | Multifunctional floor spring |
| DE102011006878B4 (en) * | 2011-04-06 | 2013-03-14 | Geze Gmbh | door closers |
| CN202081763U (en) * | 2011-05-31 | 2011-12-21 | 肇庆市志盛门控五金有限公司 | Floor spring with simple structure |
| EP2852726B1 (en) * | 2012-05-11 | 2018-07-04 | Konstantinos Stefanidis | Door closing mechanism bearing a system providing latching activation control at any position ranging from 12 to 0 degrees and a shaft tightening onto the cam system |
| CN204357252U (en) * | 2014-11-19 | 2015-05-27 | 湖州德冠门控有限公司 | A kind of adjustable multistage of power positioningly spring |
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2014
- 2014-11-19 CN CN201410660425.5A patent/CN104499860B/en active Active
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| CN104499860A (en) | 2015-04-08 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 313009, 1085 Yang Hong Road, Nanxun Town, Zhejiang, Huzhou Applicant after: Zhejiang Haida door control Co.,Ltd. Address before: 313009, 1085 Yang Hong Road, Nanxun Town, Zhejiang, Huzhou Applicant before: HUZHOU DEGUAN DOOR CONTROL Co.,Ltd. Address after: 313009, 1085 Yang Hong Road, Nanxun Town, Zhejiang, Huzhou Applicant after: HAIDA DOOR CONTROL CO.,LTD. Address before: 313009, 1085 Yang Hong Road, Nanxun Town, Zhejiang, Huzhou Applicant before: Zhejiang Haida door control Co.,Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A multi-stage positioning floor spring with adjustable door opening and closing force Effective date of registration: 20220816 Granted publication date: 20161207 Pledgee: Nanxun Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: HAIDA DOOR CONTROL CO.,LTD. Registration number: Y2022330001778 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |