CN104989208B - Mechanical open gate delay floor spring - Google Patents
Mechanical open gate delay floor spring Download PDFInfo
- Publication number
- CN104989208B CN104989208B CN201510483173.8A CN201510483173A CN104989208B CN 104989208 B CN104989208 B CN 104989208B CN 201510483173 A CN201510483173 A CN 201510483173A CN 104989208 B CN104989208 B CN 104989208B
- Authority
- CN
- China
- Prior art keywords
- cam
- door
- roller
- supporting plate
- away
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
-
- 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
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
- E05Y2201/21—Brakes
Abstract
The invention discloses a kind of mechanical open gate delay floor spring, including housing, piston, connecting rod, spring, cam, roller and supporting plate, piston, connecting rod, spring, cam, roller and supporting plate are all located in housing, the two ends of connecting rod are separately fixed on piston and supporting plate, spring housing is located at outside connecting rod, cam is arranged on supporting plate, cam rotation drives supporting plate to move, cam matches with roller, door rotational band moving cam rotates, when door opening angle is in the range of 0～65 °, the curvature at cam and roller contact point is gradually increased.During due to door opening angle in the range of 0～65 °, curvature at cam and roller contact point is gradually increased, during hence in so that door is opened in this range, the resistance being subject to during cam rotation increases, and when door is unlocked under even power effect, the resistance being subject to increases, and then the opening speed of door is slowed down, play the effect of enabling time delay, prevent an opening speed too fast and door collides with interference object, improve security performance.
Description
Technical field
The invention belongs to a kind of door closer-holder, especially relate to a kind of mechanical open gate delay floor spring.
Background technology
In use, door rotates the cam rotation driven in floor spring to floor spring, and floor spring opposite house carries out load-bearing,
Door can rotate on floor spring, it is achieved opens the door and closes the door.But existing floor spring only has pass gate delay merit
Can, i.e. inside floor spring, there is cushioning effect power in the range of the certain angle before door completely closes so that convex
Wheel rotates slowly, so that the closing velocity of door is slower；Owing to there is no BC function (enabling time delay merit
Can) so that during Men Wu enabling delay function, opening the door and easily collide with interfering object, security performance drops
Low.
Summary of the invention
It is an object of the invention to provide a kind of mechanical open gate delay floor spring, it is possible to solve above-mentioned asking
At least one in topic.
According to an aspect of the invention, it is provided a kind of mechanical open gate delay floor spring, including shell
Body, piston, connecting rod, spring, cam, roller and supporting plate, piston, connecting rod, spring, cam,
Roller and supporting plate are all located in housing, and the two ends of connecting rod are separately fixed on piston and supporting plate, spring housing
Being located at outside connecting rod, cam is arranged on supporting plate, and cam rotation drives supporting plate to move, cam and roller
Matching, door rotational band moving cam rotates, when door opening angle is in the range of 0～65 °, and cam and rolling
Curvature at wheel contact point is gradually increased.
The invention has the beneficial effects as follows: in use, door is arranged on this mechanical open gate delay floor spring
Cam on, door drive cam rotation, during due to door opening angle in the range of 0～65 °, cam with
Curvature at roller contact point is gradually increased, during hence in so that door is opened in this range, and cam rotation
Time the resistance that is subject to increase, when door is unlocked under even power effect, owing to the resistance being subject to increases, enter
And the opening speed of door is slowed down, play the effect of enabling time delay, prevent an opening speed too fast,
Prevent door and collide with interfering object, improve security performance.
In some embodiments, mechanical open gate delay floor spring can also include asphalt channel, lives
Be respectively provided on two sides with the first oil pocket and the second oil pocket, the first oil pocket and second oil pocket of plug are led to by oil circuit
Road is connected.Thus, it is provided with asphalt channel, the speed that door opens and closes can be controlled further,
Improve the security performance of door.
In some embodiments, asphalt channel includes main oil gallery, the first hydraulic fluid port and the second hydraulic fluid port, the
One hydraulic fluid port and the second hydraulic fluid port are all connected with main oil gallery, and the first hydraulic fluid port is connected with the first oil pocket all the time,
Second hydraulic fluid port is corresponding with piston, and the second hydraulic fluid port can be connected with the first oil pocket, when door is opened, the
Hydraulic oil flow in two oil pockets is to the first oil pocket.Thus, it is provided with the first hydraulic fluid port and the second hydraulic fluid port, permissible
Ensure that hydraulic oil flows in the first oil pocket and the second oil pocket；Second hydraulic fluid port is corresponding with piston so that live
Plug can block the connection of the second hydraulic fluid port and main oil gallery so that running of hydraulic power oil is slow, increases at closing time
Resistance, extend lockup, play close gate delay effect.
In some embodiments, the cross section of cam is symmetrical about its centrage.Thus, door is facilitated
Cam rotation is driven when rotating.
In some embodiments, when door opening angle is 65 °, away from convex at cam and roller contact point
The distance of wheel centrage is 16～16.5mm, and the distance away from cam end points is 10.5～11mm；
Door opening angle is when being 90 °, and at cam and roller contact point, the distance away from cam centre line is
15～15.4mm, the distance away from cam end points is 16.5～17mm.Thus so that door is from starting unlatching
Being gradually increased to resistance during being opened into 65 °, the curvature of cam becomes big；When door is opened into 90 °,
Cam curvature reduces so that door is opened resistance and reduced.
In some embodiments, when door opening angle is 75 °, away from convex at cam and roller contact point
The distance of wheel centrage is 16.7～17mm, and the distance away from cam end points is 12.5～12.8mm；
Door opening angle is when being 85 °, and at cam and roller contact point, the distance away from cam centre line is
15.6～15.9mm, the distance away from cam end points is 14.4～14.7mm.Thus so that cam exists at door
When being turned on and off turning to relevant position, door rotates by corresponding resistance.
In some embodiments, in the range of door opening angle is 65 °～75 °, cam and roller contact
At Dian, the distance away from cam centre line is gradually increased；
In the range of door opening angle is 75 °～85 °, away from cam centre line at cam and roller contact point
Distance is gradually reduced；
In the range of door opening angle is 85 °～90 °, away from cam centre line at cam and roller contact point
Distance is gradually reduced.Thus, it is possible to make cam rotate time can smooth pivotal.
Accompanying drawing explanation
Fig. 1 is the structural representation when door unlatching 65 ° of the mechanical open gate delay floor spring of the present invention
Figure；
Fig. 2 is the sectional structure schematic diagram of the oil circuit of Fig. 1；
Fig. 3 is the structural representation when door unlatching 90 ° of the mechanical open gate delay floor spring of the present invention
Figure；
Fig. 4 is the structural representation of the mechanical open gate delay floor spring cam of the present invention；
Fig. 5 is the structural representation when door closes 90 ° of the mechanical open gate delay floor spring of the present invention
Figure；
Fig. 6 is the structural representation when door closes 25 ° of the mechanical open gate delay floor spring of the present invention
Figure.
Detailed description of the invention
The present invention is further detailed explanation below in conjunction with the accompanying drawings.
With reference to Fig. 1: mechanical open gate delay floor spring, including housing 1, piston 2, connecting rod 3, bullet
Spring 4, cam 5, roller 6 and supporting plate 7, piston 2, connecting rod 3, spring 4, cam 5, roller 6
All it is located in housing 1 with supporting plate 7.The two ends of connecting rod 3 are separately fixed on piston 2 and supporting plate 7,
One end of connecting rod 3 is bolted on supporting plate 7, and other end card sets to be fixed on the piston 2；Bullet
Spring 4 is set in outside connecting rod 3, and spring 4 one end contacts with supporting plate 7, and the other end contacts with piston 2；
Cam 5 is arranged on supporting plate 7, and cam 5 rotates and drives supporting plate 7 to move, cam 5 and roller 6 phase
Coordinating, door rotational band moving cam 5 rotates, when door opening angle is in the range of 0～65 °, cam 5 with
Curvature at roller 6 contact point is gradually increased.
In use, the rotary shaft of door is arranged on cam 5 to the mechanical open gate delay floor spring of the present invention
On, when external force drives door to rotate, the rotary shaft band moving cam 5 of door rotates, and acts on when cam 5 rotates
On supporting plate 7, cam 5 promotes supporting plate 7 to move along the axial direction of housing 1.
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, mechanical open gate delay floor spring also includes that oil circuit leads to
Road 8, piston 2 be respectively provided on two sides with the first oil pocket 9 and the second oil pocket 10, the first oil pocket 9 and
Two oil pockets 10 are connected by asphalt channel 8.Asphalt channel 8 includes main oil gallery the 81, first hydraulic fluid port
82 and second hydraulic fluid port 83, the first hydraulic fluid port 82 is all connected with main oil gallery 81 with the second hydraulic fluid port 83, and
One hydraulic fluid port 82 is connected with the first oil pocket 9 all the time, and the second hydraulic fluid port 82 is corresponding with piston 2, the most alive
Plug 2 can move the position to the second hydraulic fluid port 82, and piston 2 blocks the second hydraulic fluid port 82 and main oil gallery 81
Connection；Second hydraulic fluid port 83 can be connected with the first oil pocket 9, when door is opened, and the second oil pocket 10
Interior hydraulic oil flow is to the first oil pocket 9.
When the door closes, cam 5 rotates, and promotes supporting plate 7, connecting rod 3 and piston 2 to the first oil pocket 9
Place side shifting, when door closing angle arrives 65 °, piston 2 arrives the position of the second hydraulic fluid port 82；
Along with being further turned off of door, piston 2 gradually blocks the connection of the second hydraulic fluid port 82 and main oil gallery 81,
Make hydraulic oil in the first oil pocket 9 by two hydraulic fluid ports flow to the second oil pocket 10, gradually transfer to
Only first hydraulic fluid port 82 flows in the second oil pocket 10, the velocity of liquid assets of the hydraulic oil that slowed down.Thus,
A closedown is increased to the resistance of 65 ° of hydraulic oil being subject to, and slow down door closing speed, and playing closes the door prolongs
Time effect.
As shown in Figure 4, the cross section of cam 5 is symmetrical about its centrage L.
As shown in Figures 1 to 6, when door opening angle is 65 °, at cam 5 and roller contact point away from
Distance D1 of cam 5 centrage is 16～16.5mm, preferably 16.34mm, away from cam end points
Distance D2 is 10.5～11mm, preferably 10.8mm；When door opening angle is 90 °, cam 5
It is 15～15.4mm with distance D3 away from cam centre line at roller contact point, preferably 15.35mm,
Distance D4 away from cam end points is 16.5～17mm, preferably 16.84mm.
Door opening angle is when being 75 °, distance D5 away from cam centre line at cam 5 and roller contact point
It is 16.7～17mm, preferably 16.89mm, distance D6 away from cam end points is 12.5～12.8mm,
It is preferably 12.51mm；When door opening angle is 85 °, at cam 5 and roller contact point in cam
Distance D7 of heart line is 15.6～15.9mm, preferably 15.88mm, away from distance D8 of cam end points
It is 14.4～14.7mm, preferably 14.53mm.
In the range of door opening angle is 65 °～75 °, away from cam centre line at cam 5 and roller contact point
Distance be gradually increased；In the range of door opening angle is 75 °～85 °, at cam 5 and roller contact point
Distance away from cam centre line is gradually reduced；In the range of door opening angle is 85 °～90 °, cam 5
It is gradually reduced with distance away from cam centre line at roller contact point.
In use, external force promotes door to rotate to the mechanical open gate delay floor spring of the present invention, and door drives
Cam 5 rotates, and door is in time starting to be opened into unlatching to 65 °, and the curvature of cam 5 is gradually increased, and makes
Obtain door resistance in the case of even power is opened to increase so that the unlatching resistance of door increases, opening of the door that slows down
Open speed, obtain the effect of enabling time delay.Door continues on, when door opening angle is by 65 °～90 °,
The curvature of cam 5 the most gradually changes so that the resistance that door is opened changes, and door opens phase
The effect playing enabling time delay answered.
When door is closed, and closing angle is in time closing to 25 ° for 90 °, at cam 5 Curvature varying and liquid
The resistance of force feed acts on down jointly, and the resistance closed the door increases so that closes the door and obtains time delay.
Above-described is only the preferred embodiment of the present invention, it is noted that general for this area
For logical technical staff, without departing from the concept of the premise of the invention, it is also possible to make some changes
Shape and improvement, these broadly fall into protection scope of the present invention.
Claims (7)
1. mechanical open gate delay floor spring, it is characterised in that include housing (1), piston (2),
Connecting rod (3), spring (4), cam (5), roller (6) and supporting plate (7), described piston (2),
Housing (1) is all located at by connecting rod (3), spring (4), cam (5), roller (6) and supporting plate (7)
In, the two ends of described connecting rod (3) are separately fixed on piston (2) and supporting plate (7), described spring
(4) being set in connecting rod (3) outside, described cam (5) is arranged on supporting plate (7), described convex
Wheel (5) rotates and drives supporting plate (7) mobile, and described cam (5) matches with roller (6), door
Rotate and drive described cam (5) to rotate, when door opening angle is in the range of 0～65 °, described cam (5)
It is gradually increased with the curvature at roller (6) contact point.
Mechanical open gate delay floor spring the most according to claim 1, it is characterised in that also wrap
Oil scraper paths (8), described piston (2) be respectively provided on two sides with the first oil pocket (9) and second oil
Chamber (10), described first oil pocket (9) and the second oil pocket (10) are connected by asphalt channel (8).
Mechanical open gate delay floor spring the most according to claim 2, it is characterised in that described
Asphalt channel (8) includes main oil gallery (81), the first hydraulic fluid port (82) and the second hydraulic fluid port (83), institute
State the first hydraulic fluid port (82) to be all connected with main oil gallery (81) with the second hydraulic fluid port (83), described first
Hydraulic fluid port (82) is connected with the first oil pocket (9) all the time, described second hydraulic fluid port (82) and piston (2)
Corresponding, described second hydraulic fluid port (83) can be connected with the first oil pocket (9), when door is opened,
Hydraulic oil flow in second oil pocket (10) is to the first oil pocket (9).
4., according to the mechanical open gate delay floor spring described in any one of claims 1 to 3, its feature exists
In, the cross section of described cam (5) is symmetrical about its centrage.
Mechanical open gate delay floor spring the most according to claim 4, it is characterised in that Men Kai
Open angle when being 65 °, distance (D1) away from cam (5) centrage at cam (5) and roller contact point
Being 16～16.5mm, the distance (D2) away from cam end points is 10.5～11mm；
Door opening angle is when being 90 °, distance away from cam centre line at cam (5) and roller contact point
(D3) being 15～15.4mm, the distance (D4) away from cam end points is 16.5～17mm.
Mechanical open gate delay floor spring the most according to claim 5, it is characterised in that Men Kai
Open angle when being 75 °, distance (D5) away from cam centre line at cam (5) and roller contact point
Being 16.7～17mm, the distance (D6) away from cam end points is 12.5～12.8mm；
Door opening angle is when being 85 °, distance away from cam centre line at cam (5) and roller contact point
(D7) being 15.6～15.9mm, the distance (D8) away from cam end points is 14.4～14.7mm.
Mechanical open gate delay floor spring the most according to claim 6, it is characterised in that Men Kai
Open in the range of angle is 65 °～75 °, at cam (5) and roller contact point away from cam centre line away from
From being gradually increased；
In the range of door opening angle is 75 °～85 °, at cam (5) and roller contact point in cam
The distance of heart line is gradually reduced；
In the range of door opening angle is 85 °～90 °, at cam (5) and roller contact point in cam
The distance of heart line is gradually reduced.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121895.3A CN105525820A (en) | 2015-08-07 | 2015-08-07 | Cam type door-opening delay floor spring |
| CN201510483173.8A CN104989208B (en) | 2015-08-07 | 2015-08-07 | Mechanical open gate delay floor spring |
| CN201510831271.6A CN105370127B (en) | 2015-08-07 | 2015-08-07 | Floor spring with function of delaying door opening |
| CN201510830608.1A CN105401819A (en) | 2015-08-07 | 2015-08-07 | Door opening delay floor spring |
| CN201610121781.9A CN105569482A (en) | 2015-08-07 | 2015-08-07 | Cam control type door opening delay floor spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483173.8A CN104989208B (en) | 2015-08-07 | 2015-08-07 | Mechanical open gate delay floor spring |
Related Child Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510831271.6A Division CN105370127B (en) | 2015-08-07 | 2015-08-07 | Floor spring with function of delaying door opening |
| CN201610121895.3A Division CN105525820A (en) | 2015-08-07 | 2015-08-07 | Cam type door-opening delay floor spring |
| CN201610121781.9A Division CN105569482A (en) | 2015-08-07 | 2015-08-07 | Cam control type door opening delay floor spring |
| CN201510830608.1A Division CN105401819A (en) | 2015-08-07 | 2015-08-07 | Door opening delay floor spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104989208A CN104989208A (en) | 2015-10-21 |
| CN104989208B true CN104989208B (en) | 2016-11-30 |
Family
ID=54301079
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510831271.6A Expired - Fee Related CN105370127B (en) | 2015-08-07 | 2015-08-07 | Floor spring with function of delaying door opening |
| CN201610121781.9A Pending CN105569482A (en) | 2015-08-07 | 2015-08-07 | Cam control type door opening delay floor spring |
| CN201510483173.8A Expired - Fee Related CN104989208B (en) | 2015-08-07 | 2015-08-07 | Mechanical open gate delay floor spring |
| CN201510830608.1A Pending CN105401819A (en) | 2015-08-07 | 2015-08-07 | Door opening delay floor spring |
| CN201610121895.3A Pending CN105525820A (en) | 2015-08-07 | 2015-08-07 | Cam type door-opening delay floor spring |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510831271.6A Expired - Fee Related CN105370127B (en) | 2015-08-07 | 2015-08-07 | Floor spring with function of delaying door opening |
| CN201610121781.9A Pending CN105569482A (en) | 2015-08-07 | 2015-08-07 | Cam control type door opening delay floor spring |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510830608.1A Pending CN105401819A (en) | 2015-08-07 | 2015-08-07 | Door opening delay floor spring |
| CN201610121895.3A Pending CN105525820A (en) | 2015-08-07 | 2015-08-07 | Cam type door-opening delay floor spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (5) | CN105370127B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370127B (en) * | 2015-08-07 | 2017-02-01 | 佛山市奥达金属制品有限公司 | Floor spring with function of delaying door opening |
| CN106193875A (en) * | 2016-09-13 | 2016-12-07 | 佛山市奥达金属制品有限公司 | Floor spring |
| 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 |
| CN108443391A (en) * | 2018-05-22 | 2018-08-24 | 杨华富 | A kind of spring assembly and door |
| CN110821328B (en) * | 2019-10-29 | 2021-01-19 | 佛山市顺德区象力五金弹簧有限公司 | Floor spring with high door opening and closing stability |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064589A (en) * | 1976-03-18 | 1977-12-27 | Builders Brass Works | Door closer |
| KR890002513A (en) * | 1987-07-06 | 1989-04-10 | 알란 이. 에거스, 죠지 토레도 | Door fastener |
| JP2854614B2 (en) * | 1989-07-21 | 1999-02-03 | リョービ株式会社 | Door closer |
| KR940000715A (en) * | 1992-06-08 | 1994-01-03 | 이문현 | Enhanced Flow Hinge |
| CN1085287A (en) * | 1992-06-08 | 1994-04-13 | 李文铉 | Door pivot |
| CN1085287C (en) * | 1999-05-14 | 2002-05-22 | 深圳市红门机电设备有限公司 | Buffer for drive mechanism of telescopic door |
| CN2533232Y (en) * | 2002-04-22 | 2003-01-29 | 肇庆市志成气动有限公司 | Door-controlled floor spring |
| US20080034535A1 (en) * | 2006-07-20 | 2008-02-14 | Chi-Tsao Chiang | Door closer |
| JP2009052362A (en) * | 2007-08-29 | 2009-03-12 | Nippon Door Check Mfg Corp | Device for closing door |
| CN201155259Y (en) * | 2008-01-29 | 2008-11-26 | 东莞力督门控设备有限公司 | Door closer |
| DE202008005721U1 (en) * | 2008-04-24 | 2008-07-10 | Dorma Gmbh + Co. Kg | Door closer with a hydraulic closing delay |
| CN201391162Y (en) * | 2009-03-13 | 2010-01-27 | 肇庆市志成气动有限公司 | Floor spring |
| DE102010022052A1 (en) * | 2009-12-01 | 2011-06-09 | Dorma Gmbh + Co. Kg | Hydraulic solenoid valve and door closer with hydraulic solenoid valve |
| CN102733702B (en) * | 2011-03-30 | 2015-07-01 | 台湾泰德轼股份有限公司 | Top and bottom hinge capable of adjusting back resistance |
| CN202031423U (en) * | 2011-04-28 | 2011-11-09 | 肇庆市志盛门控五金有限公司 | Door control top spring |
| DE102013112453A1 (en) * | 2013-11-13 | 2015-05-13 | Dorma Deutschland Gmbh | Overhead closer |
| CN204024293U (en) * | 2014-08-22 | 2014-12-17 | 欧志昌 | The adjustable speed floor spring of exempting to dig pit |
| CN104196390B (en) * | 2014-08-29 | 2016-06-01 | 李焕志 | Axle formula door closer and core body thereof |
| CN105370127B (en) * | 2015-08-07 | 2017-02-01 | 佛山市奥达金属制品有限公司 | Floor spring with function of delaying door opening |
| CN205172259U (en) * | 2015-08-07 | 2016-04-20 | 佛山市奥达金属制品有限公司 | Mechanical type time delay floor spring that opens door |
-
2015
- 2015-08-07 CN CN201510831271.6A patent/CN105370127B/en not_active Expired - Fee Related
- 2015-08-07 CN CN201610121781.9A patent/CN105569482A/en active Pending
- 2015-08-07 CN CN201510483173.8A patent/CN104989208B/en not_active Expired - Fee Related
- 2015-08-07 CN CN201510830608.1A patent/CN105401819A/en active Pending
- 2015-08-07 CN CN201610121895.3A patent/CN105525820A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN105569482A (en) | 2016-05-11 |
| CN105525820A (en) | 2016-04-27 |
| CN105401819A (en) | 2016-03-16 |
| CN105370127A (en) | 2016-03-02 |
| CN105370127B (en) | 2017-02-01 |
| CN104989208A (en) | 2015-10-21 |
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Denomination of invention: Mechanical type open door time-delay floor spring Effective date of registration: 20171222 Granted publication date: 20161130 Pledgee: Guangdong Nanhai Rural Commercial Bank branch branch of Limited by Share Ltd. Pledgor: FOSHAN CITY AODA HARDWARE PRODUCT Co.,Ltd. Registration number: 2017440000198 |
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Date of cancellation: 20200116 Granted publication date: 20161130 Pledgee: Guangdong Nanhai Rural Commercial Bank branch branch of Limited by Share Ltd. Pledgor: FOSHAN CITY AODA HARDWARE PRODUCT Co.,Ltd. Registration number: 2017440000198 |
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