CN209469691U - A kind of sealing bolt nut composite structure - Google Patents
A kind of sealing bolt nut composite structure Download PDFInfo
- Publication number
- CN209469691U CN209469691U CN201821677706.1U CN201821677706U CN209469691U CN 209469691 U CN209469691 U CN 209469691U CN 201821677706 U CN201821677706 U CN 201821677706U CN 209469691 U CN209469691 U CN 209469691U
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- Prior art keywords
- nut
- bolt
- skirt
- sealing
- composite structure
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Abstract
The utility model relates to bolt, the nut connecting structures of the structure members such as a kind of sealing of fuel tank, airtight, belong to mechanical structure connection design field.A kind of sealing bolt nut composite structure, including bolt, nut, bolt head are provided with skirt close to the side of screw rod；The side of nut is provided with skirt；Bolts and nuts are spirally connected, and the skirt of bolt and the skirt of nut are opposite.The utility model compared with prior art, a possibility that having the advantages that and improve sealing performance, reduce leakage.
Description
Technical field
The utility model relates to bolt, the nut connecting structures of the structure members such as a kind of sealing of fuel tank, airtight, belong to machinery
Structure connects design field.
Background technique
With the progress of aeronautical technology, type aircraft is to reduce construction weight, improves structure efficiency.Fuel tanker is abandoned
Traditional soft tank and hard oil box structure, is typically now designed using integral tank, and integral tank is both needed to store fuel oil, also be needed
Play the role of transmitting fuselage load.For this purpose, when Oiltank structure needs to transmit biggish load, structure can select bolt,
Nut mechanical connection.Airtight bay section is needed similarly to there is similar situation.
In fuel tank area or air-tight section, bolt, nut connect the form of conventionally employed bolt, nut, steel bowl, gasket,
There are four seal clearances for this structure: gap, bolt between nut and the bolt thread head of stretching and between steel bowl between
Gap, steel bowl between gap, nut and steel bowl and the gap between sealing structure face.After certain service life, four sealings
Face increases a possibility that leakage.
Utility model content
The purpose of this utility model is to solve problems of the prior art, provides a kind of sealing spiral shell of good seal performance
Bolt nut composite structure.
To achieve the goals above, the utility model adopts the following technical solution: a kind of sealing bolt nut composite structure,
Including bolt, nut, bolt head is provided with skirt close to the side of screw rod；The side of nut is provided with skirt；Bolt and spiral shell
Mother is spirally connected, and the skirt of bolt and the skirt of nut are opposite.
Preferably, gasket is provided in skirt.
Preferably, the skirt of bolt is along the axially extending of screw rod；The skirt of nut extends to the direction far from nut.
Preferably, the skirt of bolt is identical as the skirt outer dimension of nut.
Preferably, bolt is integrally formed with skirt, nut and skirt.
By TRIZ theoretical thought, the bolt of conventional seals form and the function of steel bowl, nut and steel bowl are combined into one,
Design is integral, eliminates the seal clearance between bolt and steel bowl, nut and steel bowl, improves the reliability of sealing, simultaneously
The mechanical property of bolt, nut is not reduced.
The utility model compared with prior art, has the advantages that and improves sealing performance, reduces the possibility of leakage
Property.
Detailed description of the invention
Fig. 1 is sealing bolt structural schematic diagram in the utility model embodiment；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is sealing nut structural schematic diagram in the utility model embodiment；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the utility model embodiment mounting structure schematic diagram；
In figure, 1, sealing nut；2, gasket；3, sealing bolt.
Specific embodiment
1-5 is further described the utility model with reference to the accompanying drawing:
As shown in Figs. 1-2, traditional bolt, steel bowl are changed to bolt and carry skirt by sealing bolt 3, play sealing steel bowl
Effect eliminate bolt simultaneously as bolt and skirt are integrally formed and seal the sealing surface of steel bowl, improve sealing can
By property, sealing bolt size and its skirt size, material can need specific design according to intensity.
As in Figure 2-4, traditional nut, steel bowl are changed to nut and carry skirt by sealing nut 1.Play sealing steel bowl
Effect eliminate nut simultaneously as nut and skirt are integrally formed and seal the seal clearance between steel bowl, improve close
The reliability of envelope, sealing nut size and its skirt size, material can need specific design according to intensity.
As shown in figure 5, sealing bolt 3 cooperates gasket 2 to use, gasket 2 can directly select 2HB1-504-83 standard
Part, sealing nut 1 cooperate gasket 2 to use, and gasket 2 can directly select 2HB1-504-83 standard component.Sealing bolt 3
Skirt is opposite with the skirt of sealing nut 1, and its outer dimension is identical.
In order to which sealing effect is more preferable, the thickness of gasket 2 needs thicker along its axial thickness than skirt, it may be assumed that sealing bolt
3, sealing nut 1 squeezes gasket 2.
The utility model can be used for integral tank, airtight bay section load larger part needs bolt, nut seals the joint,
Seal form is simple, reliable performance.
Claims (4)
1. a kind of sealing bolt nut composite structure, including bolt, nut, it is characterised in that: bolt head close to screw rod one
Side is provided with skirt；The side of nut is provided with skirt；Bolts and nuts are spirally connected, and the skirt of bolt and the skirt of nut are opposite；
Gasket is provided in skirt.
2. sealing bolt nut composite structure according to claim 1, it is characterised in that: axis of the skirt of bolt along screw rod
To extension；The skirt of nut extends to the direction far from nut.
3. sealing bolt nut composite structure according to claim 2, it is characterised in that: the skirt of bolt and the skirt of nut
Side outer dimension is identical.
4. sealing bolt nut composite structure according to claim 1 or 2, it is characterised in that: bolt and skirt, nut with
Skirt is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821677706.1U CN209469691U (en) | 2018-10-17 | 2018-10-17 | A kind of sealing bolt nut composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821677706.1U CN209469691U (en) | 2018-10-17 | 2018-10-17 | A kind of sealing bolt nut composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209469691U true CN209469691U (en) | 2019-10-08 |
Family
ID=68086079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821677706.1U Active CN209469691U (en) | 2018-10-17 | 2018-10-17 | A kind of sealing bolt nut composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209469691U (en) |
-
2018
- 2018-10-17 CN CN201821677706.1U patent/CN209469691U/en active Active
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| GR01 | Patent grant | ||
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