CN207795804U - A kind of bolt assembly with safety relief function - Google Patents
A kind of bolt assembly with safety relief function Download PDFInfo
- Publication number
- CN207795804U CN207795804U CN201820072749.0U CN201820072749U CN207795804U CN 207795804 U CN207795804 U CN 207795804U CN 201820072749 U CN201820072749 U CN 201820072749U CN 207795804 U CN207795804 U CN 207795804U
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- Prior art keywords
- axle sleeve
- bolt
- washer
- spring
- diameter
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Abstract
The utility model discloses a kind of bolt assembly with safety relief function, including bolt, axle sleeve, washer and spring, the bolt includes bolt head, flange face, polished rod and screw rod；The axle sleeve is T-shaped, and axle sleeve bottom is equipped with lower flange, and center is endoporus, is equipped with choke on the top of axle sleeve, size is more than polished rod outer diameter after the choke necking deformation, and is less than outer screw diameter；The bolt passes through the endoporus of axle sleeve, the choke of axle sleeve to be stuck in light bar segment, and washer and spring pocket are loaded on the outside of axle sleeve, and washer is located above the lower flange of axle sleeve, and spring is between bolt head and washer.The utility model can be improved the reliability of the cover and maintain crankcase pressure, realize safety relief and anticreep, effectively control the position of lubricating oil leakage, while can prevent valve chamber cover from cracking or even bursting when engine crankcase pressure anomaly increases.The utility model is simple in structure, easily realizes, reliability is high.
Description
Technical field
The utility model is related to a kind of valve cover bonnet bolts, are used for valve cover cap assembly, belong to automobile engine skill
Art field.
Background technology
Engine valve cover is salable and covers cylinder head, and machine oil is maintained at internal, while by dirt and moisture
Etc. contaminants in outer, bear inside certain crankcase and the pressure difference of atmospheric environment, to ensure engine valve actuating mechanism
It being capable of persistently good operation.From the angle of engine lightweight, noise reduction and sealing, more and more engine selections make
With the valve chamber cover of plastic material.Valve chamber cover of plastics rigidity itself is poor, when engine abnormity leads to crankcase pressure
It is easily cracked or even burst when power bears the upper limit higher than plastics, lead to machine oil splashes.In engine operation process
In, the machine oil of leakage is splashed on the exhaust pipe of heat, can cause the major safety risks such as fire.
Invention content
Technical problem to be solved in the utility model is in view of the defects existing in the prior art, to provide a kind of for plastics
Valve chamber cover, bolt assembly with safety relief function.
To solve this technical problem, the utility model provides a kind of bolt assembly with safety relief function, packet
Bolt, axle sleeve, washer and spring are included, the bolt includes bolt head, flange face, polished rod and screw rod；The axle sleeve is T words
Shape, axle sleeve bottom are equipped with lower flange, and center is endoporus, and choke, the choke necking deformation are equipped on the top of axle sleeve
Size is more than polished rod outer diameter afterwards, and is less than outer screw diameter；The bolt passes through the endoporus of axle sleeve, the choke of axle sleeve to be stuck in polished rod
Section, washer and spring pocket are loaded on the outside of axle sleeve, and washer is located at the lower flange top of axle sleeve, spring be located at bolt head and washer it
Between.
The bolt head is hexagon head structure, and flange face diameter is more than the outer diameter of axle sleeve and the central diameter more than spring, polished rod
Diameter be less than screw diameter
Size when axle sleeve choke necking deformation is less than screw diameter, and bolt can smooth sliding and not in axle sleeve
It can deviate from.
The washer endoporus is less than the outer diameter of axle sleeve lower flange, and washer can slide axially and not fall out along axle sleeve.
The mean diameter of coil is less than washer outer diameter, and spring can freely be compressed between washer and flange face, be extended and not
It can deviate from.
The bolt assembly be mounted on valve chamber cover low temperature side bolt mounting holes in, the bolt mounting holes be it is upper it is small under
Big stepped hole；It is provided with seal washer between lower flange and monoblock type the cover the installation hole platform of bolt assembly.
Advantageous effect：The utility model is applied at the nonmetallic the cover bolt hole of engine charge side so that is starting
When machine crankshaft case pressure anomaly increases, the reliability of the cover can be improved and maintain crankcase pressure, realize safety relief and prevent
It is de-, the position of lubricating oil leakage is effectively controlled, safety accident is prevented, while it is even fried to prevent valve chamber cover from cracking
It splits.The utility model is simple in structure, easily realizes, reliability is high.
Description of the drawings
Fig. 1 is the structural schematic diagram after the utility model bolt assembly necking；
Fig. 2 is that the utility model is applied to the scheme of installation in monoblock type the cover.
In figure：1 bolt, 11 bolt heads, 12 flange faces, 13 polished rods, 14 screw rods, 2 axle sleeves, 21 lower flanges, 22 endoporus, 23 contractings
Oral area, 3 washers, 4 springs；I valve chamber covers, II seal washers, III bolt assemblies.
Specific implementation mode
Below in conjunction with the accompanying drawings and case study on implementation specifically describes the utility model.
Fig. 1 show the structural schematic diagram after the utility model bolt assembly necking.
The utility model includes bolt 1, axle sleeve 2, washer 3 and spring 4.
The bolt 1 includes bolt head 11, flange face 12, polished rod 13 and screw rod 14.
The axle sleeve 2 is T-shaped, and 2 bottom of axle sleeve is equipped with lower flange 21, and center is endoporus 22, is set on the top of axle sleeve 2
There is choke 23, size is more than 13 outer diameter of polished rod after 23 necking of choke deformation, and is less than 14 outer diameter of screw rod.
The bolt 1 passes through the endoporus 22 of axle sleeve 2, the choke 23 of axle sleeve 2 to be stuck in 4 sets of 13 sections of polished rod, washer 3 and spring
Outside loaded on axle sleeve 2, washer 3 are located at 21 top of lower flange of axle sleeve 2, and spring 4 is between bolt head 11 and washer 3.
The bolt head 11 is hexagon head structure, and 12 diameter of flange face is more than the outer diameter of axle sleeve 2 and more than in spring 4
The diameter of diameter, polished rod 13 is less than 14 diameter of screw rod
2 choke of the axle sleeve, the 23 deformed size of necking is less than 14 diameter of screw rod, and bolt 1 can be smooth in axle sleeve 2
It slides and does not fall out.
3 endoporus of the washer is less than the outer diameter of 2 lower flange 21 of axle sleeve, and washer 3 can slide axially along axle sleeve 2 and will not take off
Go out.
4 central diameter of the spring is less than 3 outer diameter of washer, and spring 4 can freely be compressed between washer 3 and flange face 12, be stretched
It grows and does not fall out.
Fig. 2 show the scheme of installation that the utility model is applied in monoblock type the cover.
The bolt assembly III is mounted in the bolt mounting holes of valve chamber cover I low temperature sides, which is upper
Small lower big stepped hole is provided with seal washer between lower flange 21 and monoblock type the cover the installation hole platform of bolt assembly III
II。
The installation method and operation principle of the utility model：
After the axle sleeve 2 of bolt assembly III is sequentially loaded into washer 3, spring 4 and bolt 1 from top to bottom, choke 23 is locked,
So that 23 size of choke is more than 13 outer diameter of polished rod of bolt 1, and be less than 14 outer diameter of screw rod, is packed into the bolt of the cover low temperature side
In mounting hole, the 21 position diameter of lower flange of axle sleeve 2 is less than mounting hole internal diameter and more than the sealing between axle sleeve 2 and the cover
The lip internal diameter of washer II, make bolt assembly III install after do not fall out, after bolt 1 is tightened in cylinder head, spring 4 by
Compression, applies valve chamber cover I downward axial force by washer 3, ensures under normal crankcase pressure, seal washer
II has enough compression ratios and filling rate, is not in oil gas leak case；When crankcase pressure increase, valve chamber cover I by
When the gas pressure arrived is more than the axial force that spring 4 provides, spring 4 can further be compressed, and make valve chamber cover I in the position
Lifting, the compression ratio and filling rate of seal washer II decline, and high-pressure oil gas leaks from the position, to avoid valve chamber cover I
Because hypertonia cracks or even bursts, and lead to machine oil splashes, causes serious accident.
The utility model is applied at the nonmetallic the cover bolt hole of engine charge side so that in engine crankcase pressure
When power increases extremely, the reliability of the cover can be improved and maintain crankcase pressure, realize safety relief and anticreep, effectively control
The position of lubricating oil leakage prevents safety accident, while can prevent valve chamber cover from cracking or even bursting.This practicality is new
Type is simple in structure, easily realizes, reliability is high.
The utility model the embodiment above, is merely illustrative, be not it is only, it is all in the scope of the utility model
Or the change in equivalent the scope of the utility model is surrounded by the utility model.
Claims (6)
1. a kind of bolt assembly with safety relief function, it is characterised in that：Including bolt (1), axle sleeve (2), washer (3) and
Spring (4), the bolt (1) include bolt head (11), flange face (12), polished rod (13) and screw rod (14)；The axle sleeve
(2) it is T-shaped, axle sleeve (2) bottom is equipped with lower flange (21), and center is endoporus (22), and necking is equipped on the top of axle sleeve (2)
Portion (23), size is more than polished rod (13) outer diameter after choke (23) the necking deformation, and is less than screw rod (14) outer diameter；The spiral shell
Bolt (1) passes through the endoporus (22) of axle sleeve (2), the choke (23) of axle sleeve (2) to be stuck in polished rod (13) section, washer (3) and spring (4)
It is set in the outside of axle sleeve (2), washer (3) is located above the lower flange (21) of axle sleeve (2), and spring (4) is located at bolt head (11)
Between washer (3).
2. the bolt assembly according to claim 1 with safety relief function, it is characterised in that：The bolt head (11)
For hexagon head structure, flange face (12) diameter is more than the outer diameter of axle sleeve (2) and the central diameter more than spring (4), polished rod (13) it is straight
Diameter is less than screw rod (14) diameter.
3. the bolt assembly according to claim 1 with safety relief function, it is characterised in that：Axle sleeve (2) contracting
The deformed size of oral area (23) necking is less than screw rod (14) diameter, and bolt (1) smooth can slide and will not take off in axle sleeve (2)
Go out.
4. the bolt assembly according to claim 1 with safety relief function, it is characterised in that：In the washer (3)
Hole is less than the outer diameter of axle sleeve (2) lower flange (21), and washer (3) can slide axially and do not fall out along axle sleeve (2).
5. the bolt assembly according to claim 1 with safety relief function, it is characterised in that：In the spring (4)
Diameter is less than washer (3) outer diameter, and spring (4) can freely be compressed between washer (3) and flange face (12), be extended and will not take off
Go out.
6. having the bolt assembly of safety relief function according to claim 1-5 any one of them, it is characterised in that：The spiral shell
Bolt assembly (III) is mounted in the bolt mounting holes of valve chamber cover (I) low temperature side, which is up-small and down-big platform
Rank hole；It is provided with seal washer (II) between lower flange (21) and monoblock type the cover the installation hole platform of bolt assembly (III).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820072749.0U CN207795804U (en) | 2018-01-17 | 2018-01-17 | A kind of bolt assembly with safety relief function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820072749.0U CN207795804U (en) | 2018-01-17 | 2018-01-17 | A kind of bolt assembly with safety relief function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795804U true CN207795804U (en) | 2018-08-31 |
Family
ID=63272432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820072749.0U Active CN207795804U (en) | 2018-01-17 | 2018-01-17 | A kind of bolt assembly with safety relief function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035958A (en) * | 2018-01-17 | 2018-05-15 | 中国重汽集团济南动力有限公司 | It is a kind of that there is the bolt assembly of safety relief |
-
2018
- 2018-01-17 CN CN201820072749.0U patent/CN207795804U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035958A (en) * | 2018-01-17 | 2018-05-15 | 中国重汽集团济南动力有限公司 | It is a kind of that there is the bolt assembly of safety relief |
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| GR01 | Patent grant |