CN207449887U - Airtight bonnet - Google Patents
Airtight bonnet Download PDFInfo
- Publication number
- CN207449887U CN207449887U CN201721520672.0U CN201721520672U CN207449887U CN 207449887 U CN207449887 U CN 207449887U CN 201721520672 U CN201721520672 U CN 201721520672U CN 207449887 U CN207449887 U CN 207449887U
- Authority
- CN
- China
- Prior art keywords
- skeleton
- cap body
- airtight
- inner periphery
- closing
- 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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Abstract
The utility model is related to vacuum booster technical field more particularly to a kind of airtight bonnet, including cap body（1）, the first skeleton for being arranged on cap body excircle（2）And it is arranged on the second skeleton in cap body inner periphery（3）, first skeleton（1）With the second skeleton（2）End thereof contacts and rotatable, the cap body（1）Closing in wind spring on inner periphery（4）.Sealing effect is preferable between this airtight bonnet and push rod.
Description
Technical field
The utility model is related to vacuum booster technical field more particularly to a kind of airtight bonnets.
Background technology
Airtight bonnet is one of component in vacuum booster, and device main function is the contact on block piece
Ring coordinates, and for controlling the conducting of inlet channel and closing, airtight bonnet includes cap body, first be arranged on cap body excircle
Skeleton and the second skeleton being arranged in cap body inner periphery, first skeleton and the second skeleton end thereof contacts and rotatable,
But leakproofness is poor between this structure cap body inner periphery and push rod.
The content of the invention
Technical problem to be solved in the utility model is：The preferable airtight valve of sealing effect between one kind and push rod is provided
Cap.
Technical solution is used by the utility model：A kind of airtight bonnet including cap body, is arranged on cap body excircle
The first skeleton and the second skeleton for being arranged in cap body inner periphery, first skeleton and the second skeleton end thereof contacts and can
It rotates, the closing in wind spring on the cap body inner periphery.
Using more than structure compared with prior art, the utility model has the following advantages：Set closing in wind spring that can protect
Demonstrate,prove the seal of air inlet so that seal is more preferable between airtight bonnet lower end and push rod.
Preferably, described first skeleton one end is equipped with arc-shaped recess, described first skeleton one end is equipped with arc convex, institute
Second skeleton one end is stated equipped with arc-shaped recess, and the arc-shaped recess 6 coordinates with arc convex 5.In this way, the first skeleton with
Second skeleton preferably coordinates, and the two rotation is more convenient.
Preferably, the cap body inner periphery is equipped with a circle groove, and the closing in wind spring is arranged in groove.So
It sets, closing in wind spring can be arranged in groove well.
Preferably, the valve film portion with block piece cooperation is also provided in the cap body.In this way, airtight bonnet can be compared with
Good coordinates with block piece so that the sealing effect between airtight bonnet and block piece is also preferable.
Description of the drawings
Fig. 1 is the phantom of the airtight bonnet of the utility model.
Fig. 2 is the structure diagram of the airtight bonnet of the utility model.
As shown in the figure：1st, cap body；2nd, the first skeleton；3rd, the second skeleton；4th, closing in wind spring；5th, arc convex；6th, arc is recessed
It falls into；7th, groove；8th, valve film portion.
Specific embodiment
The utility model is described further with specific embodiment below in conjunction with attached drawing, but the utility model is not only
It is limited to detailed description below.
A kind of airtight bonnet including cap body 1, the first skeleton 2 being arranged on cap body excircle and is arranged in cap body
The second skeleton 3 in circumference, 1 and second skeleton of the first skeleton, 2 end thereof contacts and rotatable, on 1 inner periphery of cap body
Closing in wind spring 4.The function of closing in wind spring 4 mainly pushes away the air valve membrane of 1 lower part of cap body toward push rod direction, so that empty
Leakproofness between air valve film and push rod is stronger.
Described first skeleton, 2 one end is equipped with arc convex 5, and described second skeleton, 2 one end is equipped with arc-shaped recess 6, and described
Arc-shaped recess 6 coordinates with arc convex 5.This structure, can be open-top when block piece is encountered at 1 middle part of cap body, at this time the second bone
Frame rotates so that gap is generated between air valve membrane and push rod.
1 inner periphery of cap body is equipped with a circle groove 7, and the closing in wind spring 4 is arranged in groove 7.
The valve film portion 8 with block piece cooperation is also provided in the cap body 1.
Claims (4)
1. a kind of airtight bonnet, including cap body（1）, the first skeleton for being arranged on cap body excircle（2）And it is arranged on cap body
The second skeleton in inner periphery（3）, first skeleton（1）With the second skeleton（2）End thereof contacts and rotatable, feature exists
In：The cap body（1）Closing in wind spring on inner periphery（4）.
2. airtight bonnet according to claim 1, it is characterised in that：First skeleton（2）One end is equipped with arc convex
（5）, second skeleton（2）One end is equipped with arc-shaped recess（6）, and the arc-shaped recess（6）With arc convex（5）Cooperation.
3. airtight bonnet according to claim 1, it is characterised in that：The cap body（1）Inner periphery is equipped with a circle groove
（7）, and the closing in wind spring（4）It is arranged on groove（7）It is interior.
4. airtight bonnet according to claim 1, it is characterised in that：The cap body（1）On be also provided with matching somebody with somebody with block piece
The valve film portion of conjunction（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721520672.0U CN207449887U (en) | 2017-11-15 | 2017-11-15 | Airtight bonnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721520672.0U CN207449887U (en) | 2017-11-15 | 2017-11-15 | Airtight bonnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207449887U true CN207449887U (en) | 2018-06-05 |
Family
ID=62279802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721520672.0U Expired - Fee Related CN207449887U (en) | 2017-11-15 | 2017-11-15 | Airtight bonnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207449887U (en) |
-
2017
- 2017-11-15 CN CN201721520672.0U patent/CN207449887U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20181115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |