CN204715986U - A kind of piston rod of door closer - Google Patents
A kind of piston rod of door closer Download PDFInfo
- Publication number
- CN204715986U CN204715986U CN201520375384.5U CN201520375384U CN204715986U CN 204715986 U CN204715986 U CN 204715986U CN 201520375384 U CN201520375384 U CN 201520375384U CN 204715986 U CN204715986 U CN 204715986U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- tooth bar
- door closer
- piston
- packing groove
- 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
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The utility model discloses a kind of piston rod of door closer, solving door closer upper piston rod due to access times too much often there is the situations such as hydraulic oil leakage of oil, after under long-time use, abrasion resistance also declines, and so also in use causes certain inconvenience to door closer.Its drip irrigation device is that described piston rod body tip comprises changeover portion, offers ring packing groove, described ring packing groove is arranged with sealing ring near changeover portion.Reach and be provided with ring packing groove, be arranged with sealing ring, increase the tightness of piston rod, sealing is better, and friction durability is longer, and hydraulic oil is by piston rod when in use, and hydraulic pressure air-tightness is better, adds application life.
Description
Technical field
The utility model relates to a kind of door closer, and more particularly, it relates to a kind of piston rod of door closer.
Background technology
Door closer is a hydraulic press for a upper spring-like, by compressing rear release after door being opened, automatically being shut by door, having the effect resembling swinging door, after can ensureing that door is unlocked, accurately, being timely closed to initial position.The internal construction of door closer is the secret world of running, a stable operation at any time, its inside is made up of the hydraulic pressure wet goods with rack piston, spring, control fuel tap, ball, oil circuit and filling, be increased to after up to ten thousand times at access times, too much often there is the situations such as hydraulic oil leakage of oil due to access times in door closer upper piston rod, after under long-time use, abrasion resistance also declines, and so also in use causes certain inconvenience to door closer.Piston rod is primarily of the wear-resisting portion of piston external diameter and piston tooth auxiliary section composition, piston tooth is provided with gear and tooth bar in auxiliary section, the rocking arm of gear and door closer outside is hinged, when switch gate, rocking arm driven gear rotates, but tooth bar is only provided with a place usually, often occur that when left-right rotation switch gate wheel and rack coordinates the not compact rocking arm that causes to break down in shake process.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of good sealing effect, the door closer piston rod of long service life.
For achieving the above object, the utility model provides following technical scheme: a kind of piston rod of door closer, comprise the wear-resisting portion of piston external diameter and piston tooth auxiliary section, described piston rod body tip comprises changeover portion, offer ring packing groove near changeover portion, described ring packing groove is arranged with sealing ring.
By adopting technique scheme, being provided with ring packing groove, being arranged with sealing ring, increase the tightness of piston rod, sealing is better, and friction durability is longer, and hydraulic oil is by piston rod when in use, and hydraulic pressure air-tightness is better, adds application life.
The utility model is set to further: described piston is reinforced internal plane and comprised arc sections, upside tooth bar and downside tooth bar, described upside tooth bar and downside tooth bar symmetrical, described piston is reinforced internal plane and is provided with the gear that can be meshed with upside tooth bar and downside tooth bar.
By adopting technique scheme, be provided with relative to upside tooth bar and downside tooth bar, also there is the gear be meshed with upside tooth bar and downside tooth bar, no matter no matter opens the door is turned left or turns right to realize to rotate if reaching, the cooperation of gear and tooth bar is tightr, application life more lengthens, and use procedure is more stable.
The utility model is set to further: the tooth root portion that comprises of the excircle of described gear and basic circle portion, described basic circle portion and arc sections suitable.
Pass through technique scheme, the tooth root portion of the excircle of gear is one section, basic circle portion and arc sections suitable, such setting achieves the tooth root when opening the door can turn to the tooth bar place of side, when opening the door towards opposite side, tooth root just can turn to the tooth bar place of opposite side, achieve and open the door regardless of left and right, coordinate tightr.
The utility model is set to further: described upside tooth bar and downside tooth bar are provided with unfilled corner near gear place.
By technique scheme, be equipped with unfilled corner and can realize gear more easily enter into tooth bar place in rotation process, rotate more flexible.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the piston rod embodiment of a kind of door closer of the utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the plunger stem flange tooth auxiliary section schematic diagram of a kind of door closer of the utility model.
Description of reference numerals: 1, the wear-resisting portion of piston external diameter; 11, changeover portion; 12, ring packing groove; 13, sealing ring; 2, piston tooth auxiliary section; 21, arc sections; 22, upside tooth bar; 23, downside tooth bar; 24, unfilled corner; 3, gear; 31, tooth root portion; 32, basic circle portion.
Detailed description of the invention
Referring to figs. 1 through Fig. 3, the piston rod embodiment of a kind of door closer of the utility model is described further.
A piston rod for door closer, comprise the wear-resisting portion 1 of piston external diameter and piston tooth auxiliary section 2, piston rod body tip comprises changeover portion 11, offers ring packing groove 12, ring packing groove 12 is arranged with sealing ring near changeover portion 11.By being provided with ring packing groove 12, being arranged with sealing ring, increasing the tightness of piston rod, sealing is better, and friction durability is longer, when in use hydraulic oil extrusion piston bar, and hydraulic pressure air-tightness is better, adds application life.Piston is reinforced internal plane and is comprised arc sections 21, upside tooth bar 22 and downside tooth bar 23, arc sections 21 is two places, it is a similar pill shape that piston reinforces plane, upside tooth bar 22 and downside tooth bar 23 symmetrical, piston reinforce internal plane be provided with the gear 3 that can be meshed with upside tooth bar 22 and downside tooth bar 23.Be provided with relative to upside tooth bar 22 and downside tooth bar 23, also there is the gear 3 be meshed with upside tooth bar 22 and downside tooth bar 23, no matter no matter opens the door is turned left or turns right to realize to rotate if reaching, the cooperation of gear 3 and tooth bar is tightr, application life more lengthens, and use procedure is more stable.The tooth root portion 31 that comprises of the excircle of gear 3 and basic circle portion 32, basic circle portion 32 and arc sections 21 suitable.
When original state, basic circle portion 32 is suitable with arc sections 21, basic circle portion 32 is in arc sections 21 place, the tooth root portion 31 of the excircle of gear 3 is one section, such setting achieves the tooth root when opening the door can turn to the tooth bar place of side, when opening the door towards opposite side, tooth root just can turn to the tooth bar place of opposite side, achieves and opens the door regardless of left and right, coordinate tightr.
Upside tooth bar 22 and downside tooth bar 23 are provided with unfilled corner 24 near gear 3 place.Be equipped with unfilled corner 24 can realize gear 3 more easily enter into tooth bar place in rotation process, rotate more flexible.
Above-mentioned is above only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a piston rod for door closer, comprises the wear-resisting portion of piston external diameter and piston tooth auxiliary section, it is characterized in that: described piston rod body tip comprises changeover portion, offers ring packing groove, described ring packing groove is arranged with sealing ring near changeover portion.
2. the piston rod of a kind of door closer according to claim 1, it is characterized in that: described piston is reinforced internal plane and comprised arc sections, upside tooth bar and downside tooth bar, described upside tooth bar and downside tooth bar symmetrical, described piston is reinforced internal plane and is provided with the gear that can be meshed with upside tooth bar and downside tooth bar.
3. the piston rod of a kind of door closer according to claim 2, is characterized in that: the tooth root portion that comprises of the excircle of described gear and basic circle portion, described basic circle portion and arc sections suitable.
4. the piston rod of a kind of door closer according to claim 3, is characterized in that: described upside tooth bar and downside tooth bar are provided with unfilled corner near gear place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520375384.5U CN204715986U (en) | 2015-06-03 | 2015-06-03 | A kind of piston rod of door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520375384.5U CN204715986U (en) | 2015-06-03 | 2015-06-03 | A kind of piston rod of door closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204715986U true CN204715986U (en) | 2015-10-21 |
Family
ID=54314989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520375384.5U Expired - Fee Related CN204715986U (en) | 2015-06-03 | 2015-06-03 | A kind of piston rod of door closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204715986U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108118995A (en) * | 2018-01-30 | 2018-06-05 | 肇庆市裕兴门控有限公司 | Ultrathin hidden fireproof door window closer |
-
2015
- 2015-06-03 CN CN201520375384.5U patent/CN204715986U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108118995A (en) * | 2018-01-30 | 2018-06-05 | 肇庆市裕兴门控有限公司 | Ultrathin hidden fireproof door window closer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108506516B (en) | A kind of long-life ball valve | |
| EP2666957A3 (en) | Gas lift valve with ball-orifice closing mechanism and fully compressible dual edge-welded bellows | |
| CN204715986U (en) | A kind of piston rod of door closer | |
| CN205956431U (en) | Side installation way dredging pipe valve | |
| CN201249985Y (en) | Rear door opening and closing device of dustbin | |
| CN108591525A (en) | A kind of lift seal ball-valve | |
| CN208185525U (en) | A kind of combination valve | |
| CN105465392B (en) | A kind of valve of quick response | |
| CN203963041U (en) | A kind of stop valve for discharging | |
| CN206017747U (en) | A kind of dark bar goes straight up to drop without abrasion No leakage abnormal shape flap flange cut-off valve | |
| CN202884100U (en) | Large-middle caliber rigidity seal ball valve with long service life | |
| CN209146565U (en) | A kind of compensator | |
| CN206874853U (en) | Fire resisting damper | |
| CN202914794U (en) | Two-hemisphere static-friction ball valve | |
| CN207122646U (en) | A kind of three-flat ball valve | |
| CN202432096U (en) | Lockable ball valve | |
| CN205841823U (en) | A kind of pottery steam valve | |
| CN201170343Y (en) | Ball-valve for reverse screwed valve base | |
| CN203318932U (en) | Plastic structure for preventing rotation of bottle cap | |
| CN203906857U (en) | Fixed type ball valve | |
| CN204755990U (en) | Grey ball valve is unloaded in pneumatics | |
| CN202971898U (en) | Novel door closer end cap sealing structure | |
| CN204153299U (en) | Manual operation device of electric actuator | |
| CN103318520A (en) | Plastic structure for preventing bottle cap from rotating | |
| CN204942646U (en) | Can be used for the stop valve of non-return |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20210603 |