CN201372656Y - Hydraulic mechanism with safety valve for door closer - Google Patents
Hydraulic mechanism with safety valve for door closer Download PDFInfo
- Publication number
- CN201372656Y CN201372656Y CN200920051698U CN200920051698U CN201372656Y CN 201372656 Y CN201372656 Y CN 201372656Y CN 200920051698 U CN200920051698 U CN 200920051698U CN 200920051698 U CN200920051698 U CN 200920051698U CN 201372656 Y CN201372656 Y CN 201372656Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- hydraulic mechanism
- safety
- door closer
- 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
Links
Images
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The utility model discloses a hydraulic mechanism for a door closer, which comprises a barrel-shaped valve body and end covers arranged at two ends of the valve body. A rack piston is arranged in the valve cavity of the valve body; a rack is arranged on the inner wall of the rack piston; a gear shaft is arranged in a through hole passing through both the wall of the valve body and the wall of the rack piston; a transmission gear is arranged on the gear shaft and meshed with the rack; the right end of the rack piston is connected with a compression spring arranged in the right cavity of the valve body; an oil passage is formed at the left end of the valve wall of the valve body; and a safety one-way combination valve for protecting the internal structure of the hydraulic mechanism during the process of enforcedly closing doors is arranged on a piston port at the left end of the rack piston. When the doors are closed enforcedly, hydraulic oil in the left cavity of the valve body of the hydraulic mechanism quickly flows into the right cavity of the valve body of the hydraulic mechanism through the safety one-way combination valve to avoid the explosive teeth of the rack and the transmission gear, thereby playing a role in protecting the internal structure of the hydraulic mechanism for the door closer.
Description
Technical field
The utility model relates to door closer, particularly a kind of door closer hydraulic mechanism.
Background technology
Three sections power door closers of hydraulic drive are mainly formed a hydraulic damping device by hydraulic oil, body, rack piston.Power comes from the built-in compression spring of body, and spring force is delivered to piston by tooth bar, is delivered to hydraulic oil by piston again, and hydraulic oil is the oil circuit by offering on the body then, and chamber, a body left side flows to the right chamber of body through control valve.Adjust control valve, then can regulate the flow velocity and the flow of hydraulic oil, thus the movement velocity of indirect regulation piston and tooth bar; And the speed of closing the door is to be determined by the velocity of rotation of travelling gear, and the velocity of rotation of travelling gear is then determined by the movement velocity of tooth bar.Therefore, the control valve on the body is the speed of closing of regulating, by the effect of adjusting control valve, can obtaining soon, close the door at a slow speed.This shows that the power of closing the door of hydraulic pressure door closer is from the compression spring, the effect of closing the door then is to obtain by the flow of regulating hydraulic oil, and the flow of hydraulic oil is few more, and the speed of closing the door is slow more; The flow of hydraulic oil is big more, and the speed of closing the door is then fast more.Three sections power door closers of existing hydraulic drive are in use forced at closing time when use external force, and the tooth bar pressure on the rack piston is excessive, very easily destroy, thereby door closer was lost efficacy.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of novel door closer hydraulic mechanism is provided, and has solved forcing at closing time, destroys the problem of inner travelling gear of door closer hydraulic mechanism and tooth bar.
The realization the technical solution of the utility model is: a kind of hydraulic mechanism of door closer, comprise that tubular valve body, valve body two ends are provided with end cap, be provided with rack piston in the valve pocket of valve body, the rack piston inwall is provided with tooth bar, and preferably the interior upper wall at rack piston is provided with tooth bar.In the through hole that passes valve body wall and rack piston wall, be provided with gear shaft, travelling gear is arranged on the gear shaft, the engagement of driving cog wheel and rack; Described rack piston right-hand member is connected with the compression spring that is located at the right chamber of valve body, is provided with oil circuit at the valve wall left end of valve body, and the left end plug mouth of described rack piston is provided with the unidirectional combination valve of safety of protecting the hydraulic mechanism internal construction in pressure at closing time.
Further: in the hydraulic mechanism of above-mentioned door closer, the unidirectional combination valve of described safety is made up of the spring and the steel ball that are located in the unidirectional combination valve valve pocket of safety, steel ball card is at the spring front end and be located between the valve port of safety on the unidirectional combination valve base, on the pin that the rear end of spring is located at valve seat is fixedlyed connected.
Further again: in order to make the compression spring stress even, overcome the rotation phenomenon that compression spring stress end occurs when stressed, described compression spring is to be become by the large and small compression spring set that longitudinal sleeve lumps together.Described gear shaft two ends are provided with sealed bearing.Described oil circuit is provided with unidirectional adjustment valve.
Compared with prior art, the safety unidirectional combination valve of door closer hydraulic mechanism provided by the utility model by establishing on rack piston left end plug mouth makes in the effect of forcing to play at closing time protection door closer internal construction.When opening the door, the action of door body drivening rod, and travelling gear is rotated, travelling gear drives rack piston and moves to right-hand.The compression spring is compressed in the process that rack piston moves to right, hydraulic oil in the right chamber is pressurized also, the unidirectional adjustment valve in rack piston left side is opened under the effect of hydraulic fluid pressure, and the hydraulic oil in the right chamber flows in the chamber, a valve body left side of hydraulic mechanism through unidirectional adjustment valve.After the process of opening the door was finished, because the compression spring is compressed in opening process, the elastic potential energy of being put aside was released, and with the rack piston thruster of turning left, drove travelling gear and door closer connecting rod and rotated, and door is closed.In compression spring dispose procedure, because the hydraulic oil in chamber, a door closer hydraulic mechanism left side is compressed, the unidirectional combination valve of safety is a closed condition, and hydraulic oil can only be back to right chamber by slit between housing and the rack piston and the runner of adjusting spool.Force at closing time when using external force; tooth bar is subjected to very big pressure; this pressure is delivered to the unidirectional combination valve of safety by the piston oral instructions of rack piston left end; when the pressure that the unidirectional combination valve of safety bears reaches certain value; steel ball in the unidirectional combination valve of safety is extrusion spring to the right; the valve port that is located on the unidirectional combination valve base of safety is opened; the hydraulic oil in chamber, a hydraulic mechanism valve body left side flows to the right chamber of valve body of hydraulic mechanism fast by the unidirectional combination valve of safety; avoid tooth bar, the quick-fried tooth of travelling gear, play the effect of protection door closer hydraulic mechanism internal construction.
Description of drawings
Fig. 1: the structural representation of the utility model door closer hydraulic mechanism;
Wherein 1 valve body, 2 end caps, 3 rack pistons, 4 tooth bars, 5 gear shafts, 6 travelling gears, the unidirectional combination valve of 7 safety, 8 springs, 9 steel balls, 10 valve seats, 11 pins, 12 compress springs, 13 little compression springs greatly.
The specific embodiment
For the ease of those skilled in the art's understanding, the utility model door closer hydraulic mechanism is further specified below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, a kind of hydraulic mechanism of door closer comprises that tubular valve body 1, valve body two ends are provided with end cap 2, is provided with rack piston 3 in the valve pocket of valve body, and the rack piston inwall is provided with tooth bar 4; In the through hole that passes valve body wall and rack piston wall, be provided with gear shaft 5, travelling gear 6 is arranged on the gear shaft 5, travelling gear 6 and tooth bar 4 engagements; Described rack piston 3 right-hand members are connected with the compression spring that is located at the right chamber of valve body, are provided with oil circuit at the valve wall left end of valve body 1, and the left end plug mouth of described rack piston 3 is provided with the unidirectional combination valve 7 of safety of protecting the hydraulic mechanism internal construction in pressure at closing time.
The unidirectional combination valve 7 of described safety is made up of the spring 8 and the steel ball 9 that are located in the unidirectional combination valve valve pocket of safety, steel ball 9 is stuck in spring 8 front ends and is located between the valve port of safety on the unidirectional combination valve base 10, and the rear end of spring 8 is located on the pin 11 of fixedlying connected with valve seat 10.
In order to make the compression spring stress even, overcome the rotation phenomenon that compression spring stress end occurs when stressed, described compression spring is made up of the large and small compression spring 12,13 that longitudinal sleeve lumps together.
In order to prevent that hydraulic pressure machine oil from spilling from the gear shaft two ends, described gear shaft 5 two ends are provided with sealed bearing.
Described oil circuit is provided with unidirectional adjustment valve.
When opening the door, because large and small compression spring 12,13 is compressed, the elastic potential energy of being put aside is released, and with rack piston 3 thruster of turning left, drives travelling gear 6 and door closer connecting rod and rotates, and door is closed.In large and small compression spring 12,13 dispose procedures, because the hydraulic oil in chamber, a door closer hydraulic mechanism left side is compressed, and the unidirectional combination valve of safety cuts out, and hydraulic oil can only be back to right chamber by the valve body 1 of hydraulic mechanism and the runner of slit between the rack piston 3 and unidirectional adjustment spool.When using external force to force at closing time; gear piston 3 is subjected to very big pressure; this pressure is delivered to the unidirectional combination valve 7 of safety by the piston oral instructions of left end; when the pressure that the unidirectional combination valve 7 of safety bears reaches certain value; steel ball 9 in the unidirectional combination valve 7 of safety is extrusion spring 8 to the right; the unidirectional combination valve of safety is opened; the hydraulic oil in chamber, a body left side flows to the right chamber of valve body of hydraulic mechanism fast by being located at valve port on the unidirectional combination valve base 10 of safety; avoid tooth bar 4, travelling gear 6 quick-fried teeth, play the effect of protection door closer internal construction function.
The above is a preferred embodiment of the present utility model, and under the situation that does not break away from the present utility model design, any conspicuous distortion and the replacement carried out all belong within the utility model protection domain.
Claims (5)
1, a kind of hydraulic mechanism of door closer comprises that tubular valve body (1), valve body two ends are provided with end cap (2), is provided with rack piston (3) in the valve pocket of valve body, and the rack piston inwall is provided with tooth bar (4); In the through hole that passes valve body wall and rack piston wall, be provided with gear shaft (5), travelling gear (6) is arranged on the gear shaft (5), travelling gear (6) and tooth bar (4) engagement; Described rack piston (3) right-hand member is connected with the compression spring that is located at the right chamber of valve body; valve wall left end at valve body (1) is provided with oil circuit, it is characterized in that: the left end plug mouth of described rack piston (3) is provided with at the unidirectional combination valve of safety (7) of forcing to protect at closing time the hydraulic mechanism internal construction.
2, according to the hydraulic mechanism of the described door closer of claim 2, it is characterized in that: the unidirectional combination valve of described safety (7) is made up of the spring (8) and the steel ball (9) that are located in the unidirectional combination valve valve pocket of safety, steel ball (9) is stuck in spring (8) front end and is located between the valve port on the safety unidirectional combination valve base (10), and the rear end of spring (8) is located on the pin (11) of fixedlying connected with valve seat (10).
3, according to the hydraulic mechanism of claim 1 or 2 described door closers, it is characterized in that: described compression spring is made up of the large and small compression spring (12,13) that longitudinal sleeve lumps together.
4, according to the hydraulic mechanism of the described door closer of claim 3, it is characterized in that: described gear shaft (5) two ends are provided with sealed bearing.
5, according to the hydraulic mechanism of the described door closer of claim 4, it is characterized in that: described oil circuit is provided with unidirectional adjustment valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920051698U CN201372656Y (en) | 2009-02-24 | 2009-02-24 | Hydraulic mechanism with safety valve for door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920051698U CN201372656Y (en) | 2009-02-24 | 2009-02-24 | Hydraulic mechanism with safety valve for door closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372656Y true CN201372656Y (en) | 2009-12-30 |
Family
ID=41498736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920051698U Expired - Fee Related CN201372656Y (en) | 2009-02-24 | 2009-02-24 | Hydraulic mechanism with safety valve for door closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201372656Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182377A (en) * | 2011-04-26 | 2011-09-14 | 肇庆市志盛门控五金有限公司 | Door closer hydraulic mechanism for fine regulating door-closing power |
| CN102287109A (en) * | 2011-06-22 | 2011-12-21 | 肇庆市志盛门控五金有限公司 | Door closer with door opening delay function |
| CN102296899A (en) * | 2011-07-08 | 2011-12-28 | 肇庆市志盛门控五金有限公司 | Hidden door closer with high sealing performance |
| CN103878587A (en) * | 2014-03-31 | 2014-06-25 | 苏州市富尔达科技股份有限公司 | Door closer assembling machine |
| CN104662246A (en) * | 2012-09-28 | 2015-05-27 | 利优比株式会社 | Door closer |
| CN104912420A (en) * | 2015-06-17 | 2015-09-16 | 无锡市天力五金弹簧厂 | Hydraulic door closer device |
| CN109531843A (en) * | 2018-11-20 | 2019-03-29 | 戴美想 | A kind of overflow drainage device |
| CN110965883A (en) * | 2018-09-28 | 2020-04-07 | 亚萨合莱有限公司 | Door closer with overload valve |
| CN112412227A (en) * | 2020-12-02 | 2021-02-26 | 合肥力驰信息科技发展有限公司 | Fire door is with starting and stopping equipment based on thermosetting resin flooding |
| CN112963078A (en) * | 2021-03-12 | 2021-06-15 | 江西伟隆科技有限公司 | Fireproof door for lunch break room of kindergarten |
-
2009
- 2009-02-24 CN CN200920051698U patent/CN201372656Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182377A (en) * | 2011-04-26 | 2011-09-14 | 肇庆市志盛门控五金有限公司 | Door closer hydraulic mechanism for fine regulating door-closing power |
| CN102287109A (en) * | 2011-06-22 | 2011-12-21 | 肇庆市志盛门控五金有限公司 | Door closer with door opening delay function |
| CN102296899A (en) * | 2011-07-08 | 2011-12-28 | 肇庆市志盛门控五金有限公司 | Hidden door closer with high sealing performance |
| CN104662246A (en) * | 2012-09-28 | 2015-05-27 | 利优比株式会社 | Door closer |
| CN103878587A (en) * | 2014-03-31 | 2014-06-25 | 苏州市富尔达科技股份有限公司 | Door closer assembling machine |
| CN104912420A (en) * | 2015-06-17 | 2015-09-16 | 无锡市天力五金弹簧厂 | Hydraulic door closer device |
| CN110965883A (en) * | 2018-09-28 | 2020-04-07 | 亚萨合莱有限公司 | Door closer with overload valve |
| CN110965883B (en) * | 2018-09-28 | 2023-10-27 | 亚萨合莱有限公司 | Door closer with overload valve |
| CN109531843A (en) * | 2018-11-20 | 2019-03-29 | 戴美想 | A kind of overflow drainage device |
| CN112412227A (en) * | 2020-12-02 | 2021-02-26 | 合肥力驰信息科技发展有限公司 | Fire door is with starting and stopping equipment based on thermosetting resin flooding |
| CN112963078A (en) * | 2021-03-12 | 2021-06-15 | 江西伟隆科技有限公司 | Fireproof door for lunch break room of kindergarten |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201372656Y (en) | Hydraulic mechanism with safety valve for door closer | |
| CN201401089Y (en) | Hydraulic damp door closer | |
| CN101975006B (en) | Multifunctional floor spring | |
| CN211901421U (en) | Piston assembly for damping and damping | |
| CN203716722U (en) | Door closer with pressure relief function | |
| CN203531595U (en) | Door closer with positioning function | |
| CN201326332Y (en) | Door closer | |
| CN200999823Y (en) | Hydraulic damper | |
| CN102296899A (en) | Hidden door closer with high sealing performance | |
| CN202324961U (en) | Door closer with door-opening delaying function | |
| CN203097549U (en) | Door closer capable of lowering internal pressure | |
| CN201705101U (en) | Door closer | |
| CN102182377A (en) | Door closer hydraulic mechanism for fine regulating door-closing power | |
| CN203531598U (en) | One-way valve mechanism of door closer | |
| CN201095926Y (en) | Door closer | |
| CN201802202U (en) | Self-closing door hydraulic buffering hinge | |
| CN214403163U (en) | Buffer gear of hinge | |
| CN209800596U (en) | Adjustable hydraulic buffer | |
| CN201326334Y (en) | Hinge with damper | |
| CN102287109A (en) | Door closer with door opening delay function | |
| CN104499860B (en) | A kind of switch gate power adjustable multistage positioningly spring | |
| CN209604555U (en) | A kind of shut-off valve that leakproofness is strong | |
| CN204774395U (en) | Protruding end cast structure's automobile front axle | |
| CN205130324U (en) | Compound die safety mechanism of injection molding machine | |
| CN204899544U (en) | Hydraulic pressure door closer device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20130224 |