CN203456788U - Top cover - Google Patents
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- CN203456788U CN203456788U CN201320369986.0U CN201320369986U CN203456788U CN 203456788 U CN203456788 U CN 203456788U CN 201320369986 U CN201320369986 U CN 201320369986U CN 203456788 U CN203456788 U CN 203456788U
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- hole
- top cover
- cover
- utility
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Abstract
The utility model relates to a top cover, which comprises a cover bottom and a cover body. A thread is arranged on the inner side surface of the cover body. The cover bottom comprises a connecting part and an acting part. The acting part is of a hexagonal structure. The acting part and the cover body are arranged on two sides of the connecting part respectively. A convex part is arranged on the connecting part and on the central axis of the cover body. A first through hole and a second through hole communicated with each other are formed in the cover bottom in the axial direction and in the radial direction of the cover bottom respectively. The second through hole is formed in the acting part of the cover bottom. The opening end of the first through hole is arranged in the convex part. According to the technical scheme of the utility model, when the top cover is in use, the gas in a to-be-acted-upon component can flows out from the first through hole and the second through hole. In this way, a user can judge the screwing depth of the top cover according to the amount of the gas out of the second through hole. Meanwhile, the damage to the thread in the top cover caused by excessive force is effectively avoided.
Description
Technical field
The utility model relates to a kind of top cover, is specifically related to a kind of top cover being applicable in gas device.
Background technology
At the top cover using in WIG gas insulation switch cabinet for railway, it only forms common top cover at the bottom of threaded lid body and the lid for active force and sealing by arranging, in the process of using, can only cover the end by effect, being set, threaded lid body is screwed on the parts of required effect, because whole bottom is hermetically-sealed construction, this makes top cover in the process of effect, it can not judge intuitively, its lid body screws the degree of depth of the parts of twisting required your effect, easily because screwing the thread damage on the parts that excessively cause top cover or required effect, reduce its useful life.
Utility model content
The utility model object is that a kind of top cover being applicable in gas device is provided in order to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution adopted in the utility model is: a kind of top cover, and comprise and cover the end and lid body, the medial surface of described lid body is provided with screw thread; At the bottom of described lid, connecting portion and service portion, consist of, described service portion is arranged to hexgonal structure, and occupies the both sides at connecting portion with lid status; On described connecting portion, be provided with a protuberance, and described protuberance is arranged on the central shaft that covers body; At the bottom of described lid, on its axial direction and be respectively arranged with in the radial direction the first through hole and the second through hole being interconnected, and described the second through hole is arranged on the service portion that covers the end, and the openend of described the first through hole is arranged on protuberance.
Further, the diameter of described the first through hole is greater than the diameter of the second through hole.
Further, two of described the second through hole openends are separately positioned on two symmetrical planes of service portion.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
Top cover described in the utility model, owing to being provided with connection and vertical the first through hole and the second through hole at the bottom of the lid of top cover, this makes top cover in the process screwing, gas in the parts of required effect can outwards be run out of from the first through hole and the second through hole, this just makes people in the concrete process of using, the gas flow that can run out of from the second through hole judges the degree of depth that screws of top cover, has effectively avoided because of overexertion, and has caused the thread damage on it; The diameter of the first through hole is greater than the diameter of the second through hole simultaneously, and this has strengthened the observable degree of the gas of running out of.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
The stereogram that accompanying drawing 1 is top cover described in the utility model;
The cutaway view that accompanying drawing 2 is top cover described in the utility model;
Wherein: 1, the lid end; 2, lid body; 3, screw thread; 4, connecting portion; 5, service portion; 6, protuberance; 7, the first through hole; 8, the second through hole.
embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
A kind of top cover described in the utility model shown in accompanying drawing 1,2, comprises and covers the end 1 and lid body 2, the medial surface of described lid body 2 is provided with screw thread 3; At the bottom of described lid, 1 is comprised of connecting portion 4 and service portion 5, and described service portion 5 is arranged to hexgonal structure, and lives apart in the both sides of connecting portion 4 with lid body 2; On described connecting portion 4, be provided with a protuberance 6, and described protuberance 6 is arranged on the central shaft that covers body 2; At the bottom of described lid, 1 on its axial direction and be respectively arranged with in the radial direction the first through hole 7 and the second through hole 8 being interconnected, and described the second through hole 8 is arranged on the service portion that covers the end 1, and the openend of described the first through hole 7 is arranged on protuberance 6.
The diameter of wherein said the first through hole 7 is greater than the diameter of the second through hole 8; Two openends of described the second through hole 8 are separately positioned on two symmetrical planes of service portion 5.
Top cover described in the utility model, owing to being provided with on 1 and being communicated with and vertical the first through hole 7 and the second through hole 8 at the bottom of the lid of top cover, this makes top cover in the process screwing, gas in the parts of required effect can outwards be run out of from the first through hole 7 and the second through hole 8, this just makes people in the concrete process of using, the gas flow that can run out of from the second through hole 8 judges the degree of depth that screws of top cover, has effectively avoided because of overexertion, and has caused the thread damage on it; The diameter of the first through hole 7 is greater than the diameter of the second through hole 8 simultaneously, this makes from the gas in the parts of required effect, first from the first through hole 7 of bore, forward small-bore the second through hole 8 to, improved the flow velocity of gas, and then strengthened the observable degree of the gas of running out of; And two openends of described the second through hole 8 are separately positioned on two symmetrical planes of service portion 5, this has reduced the difficulty of processing to the second through hole 8, convenient manufacturing.
Below be only concrete exemplary applications of the present utility model, protection range of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, within all dropping on the utility model rights protection scope.
Claims (3)
1. a top cover, comprises and covers the end and lid body, and the medial surface of described lid body is provided with screw thread; At the bottom of described lid, connecting portion and service portion, consist of, described service portion is arranged to hexgonal structure, and occupies the both sides at connecting portion with lid status; It is characterized in that: on described connecting portion, be provided with a protuberance, and described protuberance is arranged on the central shaft that covers body; At the bottom of described lid, on its axial direction and be respectively arranged with in the radial direction the first through hole and the second through hole being interconnected, and described the second through hole is arranged on the service portion that covers the end, and the openend of described the first through hole is arranged on protuberance.
2. top cover according to claim 1, is characterized in that: the diameter of described the first through hole is greater than the diameter of the second through hole.
3. top cover according to claim 1, is characterized in that: two openends of described the second through hole are separately positioned on two symmetrical planes of service portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320369986.0U CN203456788U (en) | 2013-06-26 | 2013-06-26 | Top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320369986.0U CN203456788U (en) | 2013-06-26 | 2013-06-26 | Top cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456788U true CN203456788U (en) | 2014-02-26 |
Family
ID=50136642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320369986.0U Expired - Fee Related CN203456788U (en) | 2013-06-26 | 2013-06-26 | Top cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337804A (en) * | 2013-06-26 | 2013-10-02 | 苏州市吴中区欣鑫开关配件厂 | Top cover |
-
2013
- 2013-06-26 CN CN201320369986.0U patent/CN203456788U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337804A (en) * | 2013-06-26 | 2013-10-02 | 苏州市吴中区欣鑫开关配件厂 | Top cover |
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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 |
Granted publication date: 20140226 Termination date: 20150626 |
|
| EXPY | Termination of patent right or utility model |