CN102818023B - A kind of fabrication hole sealing structure - Google Patents
A kind of fabrication hole sealing structure Download PDFInfo
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- CN102818023B CN102818023B CN201210321111.3A CN201210321111A CN102818023B CN 102818023 B CN102818023 B CN 102818023B CN 201210321111 A CN201210321111 A CN 201210321111A CN 102818023 B CN102818023 B CN 102818023B
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- hole
- screw
- screw head
- conical bore
- sealing structure
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Abstract
A kind of fabrication hole sealing structure.Mainly solve existing hydraulic element technique aperture plug for seal poor performance and the large problem of installation dimension.It is characterized in that: tapped hole (4) outer end in auxiliary hole (3) is provided with conical bore (5), it is circular screw head (6) and screw rod (7) that sealing screw plug (1) comprises outer wall, screw head (6) is provided with circular groove (8) with the jointing place of screw rod (7), " O " shape seal ring (2) is provided with in circular groove (8), after sealing screw plug (1) screws in auxiliary hole (3) completely, " O " shape seal ring (2) is positioned at conical bore (5) place, simultaneously, the lower limb of screw head (6) also contacts to be formed with the hole wall of conical bore (5) and firmly seals.This fabrication hole sealing structure adds " O " shape seal ring, and adopt soft seal and firmly seal the structure combined, good seal performance, installation dimension is less, takes up space little.
Description
Technical field
The present invention relates to the seal arrangement of hydraulic element auxiliary hole aborning, belong to a kind of fabrication hole sealing structure.
Background technique
Field is manufactured at hydraulic element, often need to make auxiliary hole, to realize the connection between different duct, usually technique aperture is needed to block, the sealing configuration widely used in this field at present comprises taper screw plug, the screw plug of various seal form, the screw plug of these two kinds of structures can meet general seal request, but, all there are some shortcomings separately, cone blocking cannot ensure reliable sealing, the screw plug head installation dimension of other structures is larger, thus affect the structural design of hydraulic element, for this reason, exploitation is needed a kind ofly both to have good seal action, there is again the fabrication hole sealing structure of less installation dimension.
Summary of the invention
In order to overcome existing hydraulic element technique aperture plug for seal poor performance and the large deficiency of installation dimension, the invention provides a kind of fabrication hole sealing structure, this fabrication hole sealing structure adds " O " shape seal ring, adopt soft seal and firmly seal the structure combined, good seal performance, installation dimension is less, takes up space little.
Technological scheme of the present invention is: a kind of fabrication hole sealing structure comprises sealing screw plug and auxiliary hole, sealing screw plug is threaded in auxiliary hole, tapped hole outer end in auxiliary hole is provided with conical bore, it is circular screw head and screw rod that sealing screw plug comprises outer wall, the jointing place of screw head and screw rod is provided with circular groove, " O " shape seal ring is provided with in circular groove, after sealing screw plug screws in auxiliary hole completely, " O " shape seal ring is positioned at conical bore place, meanwhile, the lower limb of screw head also contacts with the hole wall of conical bore to be formed and firmly seals.
Counterbore is provided with, the height of the degree of depth of counterbore not Screw head outside conical bore in described auxiliary hole.
It is Spielpassung between described screw head and counterbore.
Gap between described screw head and counterbore is between 0.025 ~ 0.15mm.
The cone angle of described conical bore is between 20 ° ~ 30 °.
The stretch rate of described " O " shape seal ring at circular groove place is between 0 ~ 5%.
The center, outer end of described screw head is provided with inner hexagonal hole.
The invention has the beneficial effects as follows: owing to taking such scheme, " O " shape seal ring is compressed under the extruding of sealing screw plug, and seal between the conical bore in screw plug and auxiliary hole and form soft seal, " O " shape seal ring plays seal action; Meanwhile, the edge of the screw head on sealing screw plug 1 is pressed on the inwall of conical bore, and formed and firmly seal, effectively prevent high-pressure medium and extruded by " O " shape seal ring, have high voltage performance, sealing is reliable.Therefore, the present invention adopts soft seal and firmly seals the structure combined, good seal performance, and installation dimension is less, takes up space little.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 is the structural representations sealing screw plug 1 in Fig. 1.
Accompanying drawing 3 is structural representations of auxiliary hole 3 in Fig. 1.
In figure, 1-seals screw plug, 2-" O " shape seal ring, 3-auxiliary hole, 4-tapped hole, 5-conical bore, 6-screw head, 7-screw rod, 8-circular groove, 9-counterbore, 10-inner hexagonal hole, α-cone angle.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in Fig. 1 composition graphs 2, Fig. 3, a kind of fabrication hole sealing structure comprises sealing screw plug 1 and auxiliary hole 3, sealing screw plug 1 is threaded in auxiliary hole 3, tapped hole 4 outer end in auxiliary hole 3 is provided with conical bore 5, it is circular screw head 6 and screw rod 7 that sealing screw plug 1 comprises outer wall, screw head 6 is provided with circular groove 8 with the jointing place of screw rod 7, " O " shape seal ring 2 is provided with in circular groove 8, after sealing screw plug 1 screws in auxiliary hole 3 completely, " O " shape seal ring 2 is positioned at conical bore 5 place, meanwhile, the lower limb of screw head 6 also contacts with the hole wall of conical bore 5 to be formed and firmly seals.Owing to taking technique scheme, " O " shape seal ring 2 is compressed under the extruding of sealing screw plug 1, and seal between the conical bore 5 in screw plug 1 and auxiliary hole 3 and form soft seal, " O " shape seal ring 2 plays seal action; Meanwhile, the edge of the screw head 6 on sealing screw plug 1 is pressed on the inwall of conical bore 5, and formed and firmly seal, effectively prevent high-pressure medium and extruded by " O " shape seal ring 2, have high voltage performance, sealing is reliable.Therefore, the present invention adopts soft seal and firmly seals the structure combined, good seal performance, and installation dimension is less, takes up space little.
Conical bore 6 outer end in described auxiliary hole 3 is provided with counterbore 9, the height of the degree of depth of counterbore 9 not Screw head 6.Counterbore 9 can hold screw head 6 completely, and screw head 6 can be submerged in counterbore 9, and the installation dimension of sealing screw plug 1 is less, takes up room little.
Be Spielpassung between described screw head 6 and counterbore 9.Compact structure, the centring property of sealing screw plug 1 is good, easy for installation.
Gap between described screw head 6 and counterbore 9 is between 0.025 ~ 0.15mm.The present embodiment is optimal way, and quality of fit is higher, certainly also can select other matching gap according to working ability.
The cone angle of described conical bore 5 is between 20 ° ~ 30 °.The present embodiment is optimal way, can ensure that " O " shape seal ring 2 is compacted within the scope of this, also can ensure the reliability that screw head 6 seals firmly with the inwall of conical bore 5 simultaneously.
The stretch rate of described " O " shape seal ring (2) at circular groove 8 place is between 0 ~ 5%.Because sealing is after screw plug 1 screws in auxiliary hole 3 completely, " O " shape seal ring (2) is in tension state at circular groove 8, stretch rate is excessive, can affect sealability and the working life of " O " shape seal ring 2, required by therefore having " O " shape seal ring stretch rate.
The center, outer end of described screw head 6 is provided with inner hexagonal hole 10.Hex hole 10 mounts and dismounts for sealing screw plug 1, and can adopt inner hexagon spanner instrument, easy to use, appearance is smooth, reduces and takes up space.
Claims (7)
1. a fabrication hole sealing structure, comprise sealing screw plug (1) and auxiliary hole (3), sealing screw plug (1) is threaded in auxiliary hole (3), it is characterized in that: tapped hole (4) outer end in auxiliary hole (3) is provided with conical bore (5), it is circular screw head (6) and screw rod (7) that sealing screw plug (1) comprises outer wall, screw head (6) is provided with circular groove (8) with the jointing place of screw rod (7), " O " shape seal ring (2) is provided with in circular groove (8), after sealing screw plug (1) screws in auxiliary hole (3) completely, " O " shape seal ring (2) is positioned at conical bore (5) place, simultaneously, the lower limb of screw head (6) also contacts to be formed with the hole wall of conical bore (5) and firmly seals, the bottom of described circular groove is plane of inclination, described plane of inclination extrudes with seal ring and coordinates.
2. a kind of fabrication hole sealing structure according to claim 1, it is characterized in that: outside the conical bore (5) in auxiliary hole (3), be provided with counterbore (9), the height of the degree of depth of counterbore (9) not Screw head (6).
3. a kind of fabrication hole sealing structure according to claim 2, is characterized in that: be Spielpassung between screw head (6) and counterbore (9).
4. a kind of fabrication hole sealing structure according to claim 3, is characterized in that: the gap between screw head (6) and counterbore (9) is between 0.025 ~ 0.15mm.
5. a kind of fabrication hole sealing structure according to claim 1,2,3 or 4, is characterized in that: the cone angle of conical bore (5) is between 20 ° ~ 30 °.
6. a kind of fabrication hole sealing structure according to claim 1,2,3 or 4, is characterized in that: the stretch rate of " O " shape seal ring (2) at circular groove (8) place is between 0 ~ 5%.
7. a kind of fabrication hole sealing structure according to claim 1,2,3 or 4, is characterized in that: the center, outer end of screw head (6) is provided with inner hexagonal hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210321111.3A CN102818023B (en) | 2012-09-03 | 2012-09-03 | A kind of fabrication hole sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210321111.3A CN102818023B (en) | 2012-09-03 | 2012-09-03 | A kind of fabrication hole sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102818023A CN102818023A (en) | 2012-12-12 |
| CN102818023B true CN102818023B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210321111.3A Active CN102818023B (en) | 2012-09-03 | 2012-09-03 | A kind of fabrication hole sealing structure |
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| Country | Link |
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| CN (1) | CN102818023B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228555A (en) * | 2020-09-15 | 2021-01-15 | 北京自动化控制设备研究所 | Sealing method for miniature micro-mechanical inertial satellite integrated navigation system |
| CN113969981A (en) * | 2021-11-18 | 2022-01-25 | 宜宾三江机械有限责任公司 | Sealing assembly for hydraulic element process hole |
| CN115401516A (en) * | 2022-10-14 | 2022-11-29 | 中车南京浦镇车辆有限公司 | Machining method and device for preventing scrap iron in swing bolster air chamber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201190792Y (en) * | 2008-05-15 | 2009-02-04 | 浙江宝石缝纫机股份有限公司 | Seal structure between axle and axle hole |
| CN102019032A (en) * | 2009-09-09 | 2011-04-20 | 北京谊安医疗系统股份有限公司 | Check valve, valve core and air feed module thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8817024U1 (en) * | 1987-09-25 | 1991-12-12 | Industrie Borla S.P.A., Moncalieri, Turin/Torino, It | |
| CN2685610Y (en) * | 2003-09-26 | 2005-03-16 | 浙江亚伯兰电器有限公司 | Internal spill type vehicle dynamic steering pump |
| CN1699808A (en) * | 2005-06-20 | 2005-11-23 | 浙江大学 | Slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve |
| CN201401507Y (en) * | 2009-03-20 | 2010-02-10 | 金湖富源机械有限公司 | Dovetail groove capable of positioning O-shaped ring through the conical surface |
| CN101737370B (en) * | 2010-01-29 | 2011-11-09 | 浙江大学 | Fast hydraulic change-over valve |
| CN202834049U (en) * | 2012-09-03 | 2013-03-27 | 圣邦集团有限公司 | Auxiliary hole sealing structure |
-
2012
- 2012-09-03 CN CN201210321111.3A patent/CN102818023B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201190792Y (en) * | 2008-05-15 | 2009-02-04 | 浙江宝石缝纫机股份有限公司 | Seal structure between axle and axle hole |
| CN102019032A (en) * | 2009-09-09 | 2011-04-20 | 北京谊安医疗系统股份有限公司 | Check valve, valve core and air feed module thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102818023A (en) | 2012-12-12 |
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