CN108118994A - A kind of concealed fire-proof door closer - Google Patents
A kind of concealed fire-proof door closer Download PDFInfo
- Publication number
- CN108118994A CN108118994A CN201810086997.5A CN201810086997A CN108118994A CN 108118994 A CN108118994 A CN 108118994A CN 201810086997 A CN201810086997 A CN 201810086997A CN 108118994 A CN108118994 A CN 108118994A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil outlet
- piston
- oil pocket
- shaft
- 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.)
- Withdrawn
Links
- 239000003921 oil Substances 0.000 claims description 200
- 239000010720 hydraulic oil Substances 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000004079 fireproofing Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- 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—Type of wing
- E05Y2900/132—Doors
- E05Y2900/134—Fire doors
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The invention discloses a kind of concealed fire-proof door closers, including housing, pivoted arm and buffer unit, buffer unit includes spring, piston and shaft, shaft is connected with pivoted arm, spring and piston are arranged in housing, shaft coordinates with piston, shaft can opposing pistons rotate 0~170 ° clockwise and anticlockwise, the first oil pocket and the second oil pocket are equipped in housing, first oil pocket and the second oil pocket are located at the both sides of buffer unit respectively, spring is located in the second oil pocket, one end of spring is abutted against with piston, piston is equipped with cavity, first oil pocket and the second oil pocket pass through oil circuit, piston connects, shaft is equipped with sector, piston turns tooth with shaft equipped with what is be meshed.By the sector in shaft, the opening and closing angle of door can effectively be controlled to meet different requirements in the range of 0~170 °.Meanwhile the fire behavior being effectively isolated, reach good flameproof effect, it is simple in structure, it window close without external force window can be realized is automatically closed.
Description
Technical field
The invention belongs to a kind of fire-proof apparatus, more particularly, to a kind of concealed fire-proof door closer.
Background technology
Door closer is widely used in architectural engineering, and the fire protecting performance of door closer is related to the life of the people and property peace
Entirely, therefore, the structure design of door closer and fire protecting performance are most important.There is use the longevity for current market sales of door closer
Order that short, fire protecting performance is poor, there are security risks；Most use of door closer also is at the uniform velocity closed, it is impossible to meet different uses
It is required that.Meanwhile existing door closer due to component it is various, complicated, cost is higher.Existing part door closer is closing door
In the process, it can realize that Partial angle is closed at a slow speed, but this kind of door closer generally uses more complicated structure, machining accuracy
Height, so as to increase production cost.
The content of the invention
It is an object of the invention to provide a kind of concealed fire-proof door closer, at least one in can solving the above problems
It is a.
According to an aspect of the invention, there is provided a kind of concealed fire-proof door closer, including housing, pivoted arm and buffering dress
It puts, buffer unit includes spring, piston and shaft, and shaft is connected with pivoted arm, and spring and piston are arranged in housing, shaft and work
Plug cooperation, shaft can opposing pistons rotate 0~170 ° clockwise and anticlockwise, the first oil pocket and the second oil are equipped in housing
Chamber, the first oil pocket and the second oil pocket are located at the both sides of buffer unit respectively, and spring is located in the second oil pocket, one end of spring and work
Plug abuts against, and piston is equipped with cavity, the first oil pocket and the second oil pocket and is connected by oil circuit, piston, and shaft is equipped with sector, living
It fills in and turns tooth equipped with what is be meshed with shaft.
The beneficial effects of the invention are as follows：By setting there are two oil pocket, and therefore two oil pockets, are being opened by oil communication
During window, external force is acted on by pivoted arm in shaft, and the hydraulic oil in the second oil pocket is pressed into the first oil pocket, while bullet
Spring is compressed；After external force cancels, springback promotes piston movement, so that piston is driven by the tooth that turns being meshed
Shaft rotates, so as to fulfill the closing of window, meanwhile, hydraulic oil is pressed into the second oil pocket through the first oil pocket, and window is realized automatic
It closes, so as to the fire behavior being effectively isolated, reaches good flameproof effect, and it is simple in structure, window is closed i.e. without external force
Being automatically closed for window can be achieved.Meanwhile by the sector in shaft, the opening and closing angle of door can be effectively controlled 0
In the range of~170 °, meet different requirements.
In some embodiments, the cavity both sides inner wall of piston is equipped with perpendicular tooth, when shaft is rotated clockwise to 170 °
When, the sector in shaft is meshed with the perpendicular tooth of wherein one side；
When shaft rotates counterclockwise to 170 °, the sector in shaft is meshed with the perpendicular tooth of opposite side.Pass through as a result,
Cooperation of the sector with erecting tooth on piston in shaft, can control switch gate angle in the range of 0~170 °, simple in structure.
In some embodiments, oil circuit be included in the first oil outlet, the second oil outlet that case inside wall is arranged in order,
3rd oil outlet and the 4th oil outlet, the first oil outlet are located at side where spring, and one end of piston is equipped with protrusion, protrusion and first
Oil outlet, the second oil outlet, the 3rd oil outlet and the 4th oil outlet are corresponding, distance of the first oil outlet and the second oil outlet etc.
In length raised on piston.As a result, by the setting of each oil outlet and the length of protrusion, can control when piston moves
During to corresponding position, the corresponding adjusting of translational speed, consequently facilitating the velocity of rotation of control shaft, realizes to closing speed
Effective control is realized, speed, which can be realized, by hydraulic pressure is adjusted.
In some embodiments, one end of piston is equipped with check valve, and internal piston passes through check valve and the first oil pocket, the
Two oil pockets connect.Check valve is equipped with as a result, can effectively control the flow direction of hydraulic oil in piston.
In some embodiments, at closing time, piston is gradually moved to away from spring one side, the hydraulic oil in the first oil pocket
The second oil pocket is entered through the 4th oil outlet and the first oil outlet；With the increase of shutdown angle, the hydraulic oil in the first oil pocket
Finally the second oil pocket is entered after the 4th oil outlet flow to the first oil outlet and the second oil outlet；
During enabling, hydraulic oil in the second oil pocket by check valve enter the first oil pocket and, the liquid in the second oil pocket
Pressure oil enters the first oil pocket after the first oil outlet, the second oil outlet reach the 4th oil outlet；With the increasing of open angle
Greatly, the hydraulic oil in the second oil pocket is fuel-displaced by the 4th oil outlet, the 3rd oil outlet and second simultaneously after the first oil outlet
Mouth enters the first oil pocket.Thus, it is possible to realize that the quick unlatching of window and slower speed are closed, the concealed fire prevention ensure that
The service life of door closer, and it is easy to use.
In some embodiments, concealed fire-proof door closer further includes speed governing valve, the first oil outlet and the 4th oil outlet
Place is equipped with speed governing valve.Speed governing valve is equipped with as a result, can conveniently adjust the Extraction rate of two oil outlets, it is convenient to closing window speed
The adjusting of degree improves its applicability.
In some embodiments, concealed fire-proof door closer further includes installing plate, and installing plate is arranged on the top of housing, peace
Loading board is equipped with multiple mounting holes, and pivoted arm is located above installing plate.Installing plate is equipped with as a result, can facilitate the peace of housing and forms
Dress, it is easy for installation.
In some embodiments, the one side of the first oil pocket and the second oil pocket is equipped with end cap, and end cap is interlocked with housing.
End cap is equipped with as a result, effectively can be prevented hydraulic oil from leaking, be ensure that the normal use of the concealed fire-proof door closer.
Description of the drawings
Fig. 1 is a kind of schematic cross-sectional view of concealed fire-proof door closer of the present invention；
Fig. 2 is the A-A schematic cross-sectional views of Fig. 1.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Referring to figs. 1 to Fig. 2：A kind of concealed fire-proof door closer, including housing 1, pivoted arm 2 and buffer unit 3, buffer unit
3 include spring 31, piston 32 and shaft 33, and shaft 33 is connected with pivoted arm 2, and spring 31 and piston 32 are arranged in housing 1, shaft
33 coordinate with piston 32, shaft 33 can opposing pistons 32 rotate 0~170 ° clockwise and anticlockwise, first is equipped in housing 1
4 and second oil pocket 5 of oil pocket, the first oil pocket 4 and the second oil pocket 5 are located at the both sides of buffer unit 3 respectively, and spring 32 is located at the second oil
In chamber 5, one end and the piston 32 of spring 31 abut against, and piston 32 is equipped with cavity, and the first oil pocket 4 and the second oil pocket 5 pass through oil circuit
6th, piston 32 connects, and shaft 33 is equipped with sector 331, and piston 32 turns tooth with shaft 33 equipped with what is be meshed.
Wherein, the material of housing 1 is metal, plays fireproofing function to a certain extent；The concealed fire-proof door closer makes
Used time, housing 1 is mounted on above doorframe, pivoted arm 2 is connected with door leaf so that when door leaf is turned on and off, can drive pivoted arm 2
It rotates, pivoted arm 2 drives shaft 33 to rotate again.
The cavity both sides inner wall of piston 32 is equipped with perpendicular tooth 321, when shaft 33 is rotated clockwise to 170 °, in shaft 33
Sector 331 be meshed with the perpendicular tooth 321 of wherein one side；
When shaft 33 rotates counterclockwise to 170 °, sector 331 and 321 phase of perpendicular tooth of opposite side in shaft 33 are nibbled
It closes.
When door leaf is opened inwardly or outward to 170 °, sector 331 and the perpendicular tooth 321 of corresponding side in shaft 33
Edge is engaged so that sector 331 can not be further continued for rotating, so as to effectively control the opening angle of door leaf.
Oil circuit 6 is included in the first oil outlet 61, the second oil outlet 62, the 3rd oil outlet that 1 madial wall of housing is arranged in order
63 and the 4th oil outlet 64, the first oil outlet 61 be located at 31 place side of spring, one end of piston 32 is equipped with protrusion 321, protrusion 321
Corresponding with the first oil outlet 61, the second oil outlet 62, the 3rd oil outlet 63 and the 4th oil outlet 64, i.e., piston 32 is being moved through
Cheng Zhong can realize that the closure to the first oil outlet 61, the second oil outlet 62, the 3rd oil outlet 63 and the 4th oil outlet 64 is made
With.The distance of first oil outlet 61 and the second oil outlet 62 is equal to the length of protrusion 321 on piston 32, thus, it is possible to realize the
One oil outlet 61 can be connected with the hydraulic oil at the second oil outlet 62, the 3rd oil outlet 63 and the 4th oil outlet 64 simultaneously, side
Just the flowing velocity of hydraulic oil is controlled, so as to control the closing velocity of door.
One end of piston 32 is equipped with check valve 7, is connected inside piston 32 by check valve 7 and the first oil pocket 4, the second oil pocket 5
It is logical.
At closing time, piston 32 is gradually moved to away from 31 one side of spring, and the hydraulic oil in the first oil pocket 4 is through the 4th oil outlet
64 and first oil outlet 61 enter the second oil pocket 5；With the increase of shutdown angle, the hydraulic oil in the first oil pocket 4 finally passes through
4th oil outlet 64 enters the second oil pocket 5 after flowing to the first oil outlet 61 and the second oil outlet 62；It is closed in door initial
In the stage, the protrusion 321 of piston 32 is engaged with the first oil outlet 61, and with the rebound of spring 31, spring 31 promotes piston 32 to move
Dynamic, piston 32 drives shaft 33 to rotate, while drives pivoted arm 2 that door is driven gradually to be closed.With the movement of piston 32, protrusion
321 gradually leave the first oil outlet 61, so that the hydraulic oil in the first oil pocket 4 is through the 4th oil outlet 64 and the first oil outlet
61 enter the second oil pocket 5.With the further rebound of spring 31, the second oil outlet 63 is blocked, then opened by protrusion 321；
Then the 3rd oil outlet 63 is blocked, finally so that the hydraulic oil in the first oil pocket 4 finally flow to first through the 4th oil outlet 64
The second oil pocket 5 is entered after 61 and second oil outlet 62 of oil outlet.In the closing process of door, due to the first oil pocket 4 and second
The connection of different number oil outlet in oil pocket 5, it is achieved thereby that the control to door closing speed, realize door from close the door at a slow speed, compared with
Fast speed closes the door, finally arrives the process closed the door at a slow speed, can meet the requirement of door.
During enabling, hydraulic oil in the second oil pocket 5 by check valve 7 enter the first oil pocket 4 and, in the second oil pocket 5
Hydraulic oil by the first oil outlet 61, the second oil outlet 62 reach the 4th oil outlet 64 after enter the first oil pocket 4；With opening
The increase of door angle, the hydraulic oil in the second oil pocket 5 go out after the first oil outlet 61 by the 4th oil outlet the 64, the 3rd simultaneously
63 and second oil outlet 62 of hydraulic fluid port enters the first oil pocket 4.That is door is in the initial conditions of unlatching, and protrusion 321 is by the 4th oil outlet
64 and the 3rd oil outlet 63 block, during enabling, under external force, pivoted arm 2 drives shaft 33 to rotate, and shaft 33 is with piston
32 movements, so as to which spring 31 is gradually compressed.Hydraulic oil in second oil pocket 5 opens check valve 7 under oil pressure effect, the
Hydraulic oil in two oil pockets 5 is entered by check valve 7 in the first oil pocket 4；Meanwhile protrusion 321 gradually leaves the on piston 32
Four oil outlets 64 so that the hydraulic oil in the second oil pocket 5 reaches the 4th oil outlet by the first oil outlet 61, the second oil outlet 62
The first oil pocket 4 is entered after 64.With the gradual movement of piston 32, the 4th oil outlet 64, the 3rd oil outlet 63 and second are fuel-displaced
Mouth 62 is opened, and the hydraulic oil in the second oil pocket 5 goes out after the first oil outlet 61 by the 4th oil outlet the 64, the 3rd simultaneously
63 and second oil outlet 62 of hydraulic fluid port is entered in the first oil pocket 4.Thus, it is possible to realize the quick unlatching of door, occur convenient for fire behavior
When it is quick withdraw, meet requirement.
Concealed fire-proof door closer further includes speed governing valve 8, and speed governing is equipped at the first oil outlet 61 and the 4th oil outlet 64
Valve 8.By speed governing valve 8, the amount of opening of the first oil outlet 61 and the 4th oil outlet 64 can be controlled, so as to facilitate control first
The velocity of liquid assets of hydraulic oil in 4 and second oil pocket 5 of oil pocket so as to facilitate the adjusting of the opening and closing speed of door, meets different
The use of occasion.
Concealed fire-proof door closer further includes installing plate 9, and installing plate 9 is arranged on the top of housing 1, and installing plate 9 is equipped with multiple
Mounting hole 91, pivoted arm 2 are located at 9 top of installing plate.Wherein, installing plate 9 is metallic plate, plays fireproofing function, and mounting hole 91 is uniformly distributed
On installing plate 9, installing plate 9 can be bolted on housing 1.
The one side of first oil pocket 4 and the second oil pocket 5 is equipped with end cap 10, and end cap 10 is interlocked with housing 1.In order to further
It prevents the leakage of hydraulic oil in two oil pockets, sealing ring is installed at end cap 10 and 1 fastening of housing.
Above is only the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art,
Without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.
Claims (8)
1. a kind of concealed fire-proof door closer, which is characterized in that described slow including housing (1), pivoted arm (2) and buffer unit (3)
Flushing device (3) includes spring (31), piston (32) and shaft (33), and the shaft (33) is connected with pivoted arm (2), the spring
(31) it is arranged on piston (32) in housing (1), the shaft (33) coordinates with piston (32), and the shaft (33) can be opposite
Piston (32) rotates 0~170 ° clockwise and anticlockwise, and the first oil pocket (4) and the second oil pocket (5) are equipped in the housing (1),
First oil pocket (4) and the second oil pocket (5) are located at the both sides of buffer unit (3) respectively, and the spring (32) is located at the second oil
In chamber (5), one end and the piston (32) of the spring (31) abut against, and the piston (32) is equipped with cavity, first oil pocket
(4) connected with the second oil pocket (5) by oil circuit (6), piston (32), the shaft (33) is equipped with sector (331), the work
Plug (32) turns tooth with shaft (33) equipped with what is be meshed.
2. concealed fire-proof door closer according to claim 1, which is characterized in that in the cavity both sides of the piston (32)
Wall is equipped with perpendicular tooth (321), when the shaft (33) is rotated clockwise to 170 °, sector (331) in shaft (33) with
The perpendicular tooth (321) of wherein one side is meshed；
When the shaft (33) rotates counterclockwise to 170 °, perpendicular tooth (321) phase of sector (331) and opposite side in shaft
Engagement.
3. concealed fire-proof door closer according to claim 2, which is characterized in that the oil circuit (6) is included in housing (1)
The first oil outlet (61), the second oil outlet (62), the 3rd oil outlet (63) and the 4th oil outlet (64) that madial wall is arranged in order,
First oil outlet (61) is located at side where spring (31), and one end of the piston (32) is equipped with raised (321), the protrusion
(321) it is corresponding with the first oil outlet (61), the second oil outlet (62), the 3rd oil outlet (63) and the 4th oil outlet (64), institute
The distance for stating the first oil outlet (61) and the second oil outlet (62) is equal to the length of raised (321) on piston (32).
4. concealed fire-proof door closer according to claim 3, which is characterized in that one end of the piston (32) is equipped with single
To valve (7), connected inside the piston (32) by check valve (7) with the first oil pocket (4), the second oil pocket (5).
5. concealed fire-proof door closer according to claim 4, which is characterized in that at closing time, the piston (32) is gradual
It is moved to away from spring (31) one side, the hydraulic oil in first oil pocket (4) is through the 4th oil outlet (64) and the first oil outlet
(61) the second oil pocket (5) is entered；With the increase of shutdown angle, the hydraulic oil in first oil pocket (4) is finally through the 4th
Oil outlet (64) enters the second oil pocket (5) after flowing to the first oil outlet (61) and the second oil outlet (62)；
During enabling, hydraulic oil in second oil pocket (5) by check valve (7) enter the first oil pocket (4) and, second
Hydraulic oil in oil pocket (5) enters after the first oil outlet (61), the second oil outlet (62) reach the 4th oil outlet (64)
First oil pocket (4)；With the increase of open angle, the hydraulic oil in second oil pocket (5) is after the first oil outlet (61)
Simultaneously the first oil pocket (4) is entered by the 4th oil outlet (64), the 3rd oil outlet (63) and the second oil outlet (62).
6. according to the concealed fire-proof door closer of claim 2~4 any one of them, which is characterized in that further include speed governing valve
(8), it is equipped with speed governing valve (8) at first oil outlet (61) and the 4th oil outlet (64).
7. concealed fire-proof door closer according to claim 1, which is characterized in that further include installing plate (9), the installation
Plate (9) is arranged on the top of housing (1), and the installing plate (9) is equipped with multiple mounting holes (91), and the pivoted arm (2) is located at installing plate
(9) top.
8. according to the concealed fire-proof door closer of Claims 1 to 5 any one of them, which is characterized in that first oil pocket (4)
End cap (10) is equipped with the one side of the second oil pocket (5), the end cap (10) is interlocked with housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810086997.5A CN108118994A (en) | 2018-01-30 | 2018-01-30 | A kind of concealed fire-proof door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810086997.5A CN108118994A (en) | 2018-01-30 | 2018-01-30 | A kind of concealed fire-proof door closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108118994A true CN108118994A (en) | 2018-06-05 |
Family
ID=62233269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810086997.5A Withdrawn CN108118994A (en) | 2018-01-30 | 2018-01-30 | A kind of concealed fire-proof door closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108118994A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952864A (en) * | 2019-12-18 | 2020-04-03 | 陈李兰 | Device that door was closed fast when high temperature was prevented pressing from both sides in normal condition |
| CN113622776A (en) * | 2021-07-28 | 2021-11-09 | 箭牌家居集团股份有限公司 | Door closer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200835840A (en) * | 2007-02-16 | 2008-09-01 | Taiwan Leado Co Ltd | Dual-side-opening-type door closer |
| CN203716722U (en) * | 2013-12-03 | 2014-07-16 | 温州欧德门控科技发展有限公司 | Door closer with pressure relief function |
| CN206091688U (en) * | 2016-10-09 | 2017-04-12 | 江苏昊泽瑞消防科技有限公司 | Door closer |
| CN206707493U (en) * | 2017-04-14 | 2017-12-05 | 肇庆市裕兴门控有限公司 | Hidden type hydraulic fire-proof door closer |
| CN208010162U (en) * | 2018-01-30 | 2018-10-26 | 肇庆市裕兴门控有限公司 | A kind of concealed fire-proof door closer |
-
2018
- 2018-01-30 CN CN201810086997.5A patent/CN108118994A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200835840A (en) * | 2007-02-16 | 2008-09-01 | Taiwan Leado Co Ltd | Dual-side-opening-type door closer |
| CN203716722U (en) * | 2013-12-03 | 2014-07-16 | 温州欧德门控科技发展有限公司 | Door closer with pressure relief function |
| CN206091688U (en) * | 2016-10-09 | 2017-04-12 | 江苏昊泽瑞消防科技有限公司 | Door closer |
| CN206707493U (en) * | 2017-04-14 | 2017-12-05 | 肇庆市裕兴门控有限公司 | Hidden type hydraulic fire-proof door closer |
| CN208010162U (en) * | 2018-01-30 | 2018-10-26 | 肇庆市裕兴门控有限公司 | A kind of concealed fire-proof door closer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952864A (en) * | 2019-12-18 | 2020-04-03 | 陈李兰 | Device that door was closed fast when high temperature was prevented pressing from both sides in normal condition |
| CN110952864B (en) * | 2019-12-18 | 2021-07-13 | 嘉兴艾德尔电子科技股份有限公司 | Device that door was closed fast when high temperature was prevented pressing from both sides in normal condition |
| CN113622776A (en) * | 2021-07-28 | 2021-11-09 | 箭牌家居集团股份有限公司 | Door closer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180605 |