CN201554762U - Fastener applied to caustic working environment - Google Patents
Fastener applied to caustic working environment Download PDFInfo
- Publication number
- CN201554762U CN201554762U CN2009202100085U CN200920210008U CN201554762U CN 201554762 U CN201554762 U CN 201554762U CN 2009202100085 U CN2009202100085 U CN 2009202100085U CN 200920210008 U CN200920210008 U CN 200920210008U CN 201554762 U CN201554762 U CN 201554762U
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- Prior art keywords
- fastening piece
- protective layer
- utility
- model
- nut
- 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
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The utility model discloses a fastener applied to a caustic working environment. The external surface of the fastener, exposed in the working environment, is wrapped by a protective layer with hard or soft quality used for resisting corrosion. The protective layer is made of PVC material and is a film-shaped material; and the thickness of the film is 0.3 to 15mm, preferably 8mm. In the utility model, the anti-corrosive protective layer made of PVC material can be arranged on the external surface of the fastener after the equipment is fixed by the fastener, thus preventing the fastener from being corroded, and prolonging the service life of the fastener.
Description
Technical field
The utility model relates to fastening piece, particularly is applied to have the fastening piece in corrosive working environment.
Background technique
At present generally use mechanical type fastener to be used to be connected in the various device in electronics, machinery and chemical industry and fix each parts and structure.In some cases, these equipment may be applied in the external environment condition of very severe, for example open air, wet environment, acidifying sublimity or the like.Owing to may have gas and/or liquid in the surrounding environment than severe corrosive; cause the fastening piece that is exposed on the equipment in the external environment condition to damage through regular meeting, thereby the proper functioning of the fixing associated machines of this fastening piece is adopted in influence because of materials such as contact daylight, moisture or acidity are corroded.In addition, these equipment are being dismantled when maintenance when needs in some cases, because therefore the situation that fastening piece may occur getting rusty because of corrosion makes that these fastening pieces are difficult to dismounting, thereby cause and to keep in repair equipment, influenced the proper functioning life-span of equipment.
Below with typical machanical fastener hexagon bolt and nut as being example, specifically describe.As shown in Figure 1, Fig. 1 a is the side view of hexagon bolt 100 of the prior art, and Fig. 1 b is the structural representation that cooperates the nut 101 of hexagon bolt in the prior art, and Fig. 1 c is the structural drawing that hexagon bolt 100 is sleeved on nut 101.When this hexagon bolt and nut sleeve are fitted together, outside the whole head of bolt 100 and most of afterbody all are exposed to, outside whole outer surfaces of nut 101 also are exposed to.For example, when this hexagon bolt and nut are used for outdoor fixing tube, often be exposed in the air or be imbedded in underground, because oxidation or other corrosion of air, the screw bolt and nut that is exposed to the outside is easy to generate corrosion, cause all variation of the chemical characteristics of this screw bolt and nut and corrosion resistance, Life cycle shortens, and may bring phenomenons such as pipeline breaking, device damage to take place.
From the above mentioned, the fastening piece that is exposed in the rugged environment is not corroded and becomes the current technical issues that need to address.
The model utility content
Introduced the notion of a series of reduced forms in the model utility content part, this will further describe in the embodiment part.Model utility content part of the present utility model does not also mean that key feature and the essential features that will attempt to limit technological scheme required for protection, does not more mean that the protection domain of attempting to determine technological scheme required for protection.
The problem that fastening piece is corroded easily in the prior art in order to solve, the life-span is short; the utility model discloses a kind of fastening piece that is applied to have in corrosive working environment, the outer surface in the described working environment of being exposed to of described fastening piece all is coated with hard or soft is used for erosion-resisting protective layer.
According on the other hand of the present utility model, described protective layer is the PVC material preparation.
According on the other hand of the present utility model, described protective layer is a film shape material, and the thickness of described film is 0.3mm-15mm, preferably 8mm.
According on the other hand of the present utility model, described protective layer is split type, comprises a plurality of protecting jackets that are used to protect each exposure portion of fastening piece.
According on the other hand of the present utility model, described protective layer is an integral type, coats all exposed surfaces of fastening piece after described fastening piece is installed.
According on the other hand of the present utility model, when described protective layer is hard material, by injection molding way moulding in advance before fastening piece is installed.
According on the other hand of the present utility model, described fastening piece is a screw bolt and nut.At this moment, described protecting jacket comprises the nuts that coats bolt head, coats the sleeve on screw rod top of bolt and the nut cap that coats nut.
According to the corrosion protective covering by the PVC material preparation of the present utility model, can be after the fastening piece fixed equipment, this protective layer is arranged on the outer surface of fastening piece, prevent that this fastening piece is corroded, prolong the working life of fastening piece.
Description of drawings
Following accompanying drawing of the present utility model is used to understand the utility model at this as a part of the present utility model.Embodiment of the present utility model and description thereof have been shown in the accompanying drawing, have been used for explaining principle of the present utility model.In the accompanying drawings,
Fig. 1 a is the structural representation of bolt in the prior art;
Fig. 1 b is the structural representation of nut in the prior art;
Fig. 1 c is that bolts and nuts are sleeved on structural representation together;
Fig. 2 a is the schematic representation that covers the protective layer of bolt end in the utility model;
Fig. 2 b is the hollow protective layer schematic representation that part covers threaded stem in the utility model;
Fig. 2 c is the protective layer schematic representation that covers nut in the utility model;
Fig. 3 is the combination schematic representation of nuts, sleeve and nut cap and bolt.
Embodiment
In the following description, having provided a large amount of concrete details understands the utility model more completely so that provide.Yet, it will be apparent to one skilled in the art that the utility model can need not one or more these details and implemented.In other example,, be not described for technical characteristicss more well known in the art for fear of obscuring with the utility model.
The utility model provides a kind of outer surface to be provided with the fastening piece of corrosion-resistant protective layer; this protective layer can be by the hard protective material moulding in advance with the solid shape that matches with the shape of fastening piece; be sleeved on the fastening piece then, or adopt the soft protective material of no solid shape directly to be coated on before the described installation or the outer surface of the fastening piece after installing.This protective layer have corrosion resistance strong, be difficult for breaking, characteristic such as high temperature resistant and anti-aging.
Shown in Fig. 2 a, Fig. 2 b and Fig. 2 c, be example with hexagon bolt and nut, describe according to the fastening piece that has corrosion protective covering of the present utility model.Fig. 2 a is the schematic representation that covers the protective layer 201 of bolt head in the utility model; Fig. 2 b is the schematic representation of the protective layer 202 of the part screw rod of covering bolt in the utility model; Fig. 2 c is the schematic representation that covers the protective layer 203 of nut in the utility model.In the present embodiment, described fastening piece is hex head bolt and nut, and described protective layer is with the preformed hard protective layer of PVC material by the injection moulding form.Described protective layer comprises: the nuts 201 that (a) is nested in bolt head; (b) be nested near the sleeve 202 on the part screw rod of bolt head, and the nut cap 203 that (c) is nested in described nut outer surface.Wherein, described nuts 201 has the shape that the shape with bolt head is complementary, and bolt head can be covered comprehensively.The length of described sleeve 202 is provided with according to being bolted to the length of the screw rod that exposes between the head of equipment back nut and bolt, and the diameter of this sleeve 202 matches with the diameter of described screw rod.Described sleeve 202 also comprises the platform 202a that the cross section with described nuts offsets, and is used to protect the bolt head inner side surface that exposes.The diameter of described nut cap 203 is used to envelope whole nut corresponding to the diameter setting of described nut.Described nut cap 203 also comprises afterbody cover 203a, is used for after nut is installed on the bolt, entangles the bolt tail that exposes and is not corroded to protect it.In the present embodiment, nuts 201, sleeve 202 and the single protecting jacket of nut cap 203 for separating adopt the PVC thin-film material in advance molding and forming of thickness between 0.3mm-15mm, and it is thick preferably to be 8mm.
When mounted, earlier described nuts 201 and sleeve 202 are sleeved on the bolt, then nut are screwed in and carry out fasteningly in the bolt, on nut, be inserted in nut cap 203 more at last so that protection nuts and bolt afterbody.Fig. 3 shows the bolt and nut fastening piece that has protecting jacket that assembles.
In addition, according on the other hand of the present utility model, the film that can also adopt soft material to prepare directly coats the exposed surface of fastening piece.Described flexible film for example adopts the PVC material.Except being sleeved in advance on the fastening piece, can also after the fastening piece installation, coat described fastening piece in integrity ground according to the mode identical with hard material.The advantage of soft material is to make the closely described fastening piece body of contact of protective layer, and can coat by disposable integral, the fastening piece air-isolation can be played better insulation blocking effect thus.
The fastening piece of describing in the utility model is not limited to hexagon bolt and nut here, and other various types of elements with fastening function all fall within the protection domain of the present utility model.For example tapping screw, circular screw.Snap fastener or the like.The protective material that the utility model adopts also is not limited to the PVC material that exemplifies here, can adopt hard or the soft material that has anti-oxidant, rust-proofing, performance such as against corrosion arbitrarily well known in the art.
In the present embodiment, the outside be coated with the screw bolt and nut of protective layer rational in infrastructure, can anticorrosionly can insulate again, can also carry out various variations to profile according to actual needs.Make this protective layer closely cover or certain interval is arranged cover the outer surface of fastening piece, guarantee that fastening piece not by the oxide etch of external environment institute, has prolonged the working life of fastening piece.
In sum, only be the utility model preferred embodiment, be not the utility model is done any pro forma restriction.Though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model.Any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made possible change and modification, or be revised as the embodiment that is equal to of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model, all still belongs in the scope of technical solutions of the utility model protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.
Claims (9)
1. a fastening piece that is applied to have in corrosive working environment is characterized in that, the outer surface in the described working environment of being exposed to of described fastening piece all is coated with hard or soft is used for erosion-resisting protective layer.
2. fastening piece as claimed in claim 1 is characterized in that, described protective layer is the PVC material preparation.
3. fastening piece as claimed in claim 1 is characterized in that, described protective layer is a film shape material, and the thickness of described film is 0.3mm-15mm.
4. corrosion-proof type fastening piece as claimed in claim 3 is characterized in that, the thickness of described film is 8mm.
5. corrosion-proof type fastening piece as claimed in claim 1 is characterized in that, described protective layer is split type, comprises a plurality of protecting jackets that are used to protect each exposure portion of fastening piece.
6. corrosion-proof type fastening piece as claimed in claim 1 is characterized in that, described protective layer is an integral type, coats all exposed surfaces of fastening piece after described fastening piece is installed.
7. corrosion-proof type fastening piece as claimed in claim 1 is characterized in that, when described protective layer is hard material, by injection molding way moulding in advance before fastening piece is installed.
8. corrosion-proof type fastening piece as claimed in claim 1 is characterized in that, described fastening piece is a screw bolt and nut.
9. corrosion-proof type fastening piece as claimed in claim 5 is characterized in that, described protecting jacket comprises the nuts that coats bolt head, coat the sleeve on screw rod top of bolt and the nut cap that coats nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202100085U CN201554762U (en) | 2009-09-22 | 2009-09-22 | Fastener applied to caustic working environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202100085U CN201554762U (en) | 2009-09-22 | 2009-09-22 | Fastener applied to caustic working environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554762U true CN201554762U (en) | 2010-08-18 |
Family
ID=42614444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202100085U Expired - Fee Related CN201554762U (en) | 2009-09-22 | 2009-09-22 | Fastener applied to caustic working environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367831A (en) * | 2011-10-22 | 2012-03-07 | 河南省电力公司周口供电公司 | Special mechanism for protecting bolt in strong corrosive environment and use method |
-
2009
- 2009-09-22 CN CN2009202100085U patent/CN201554762U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367831A (en) * | 2011-10-22 | 2012-03-07 | 河南省电力公司周口供电公司 | Special mechanism for protecting bolt in strong corrosive environment and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SEMICONDUCTOR MANUFACTURING INTERNATIONAL (BEIJING Free format text: FORMER OWNER: SEMICONDUCTOR MANUFACTURING INTERNATIONAL (SHANGHAI) CORPORATION Effective date: 20130116 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201203 PUDONG NEW AREA, SHANGHAI TO: 100176 DAXING, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130116 Address after: 100176 No. 18, Wenchang Avenue, Beijing economic and Technological Development Zone Patentee after: Semiconductor Manufacturing International (Beijing) Corporation Address before: 201203 Shanghai City, Pudong New Area Zhangjiang Road No. 18 Patentee before: Semiconductor Manufacturing International (Shanghai) Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20180922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |