CN205819178U - Secondary piston on vacuum booster - Google Patents
Secondary piston on vacuum booster Download PDFInfo
- Publication number
- CN205819178U CN205819178U CN201620695383.3U CN201620695383U CN205819178U CN 205819178 U CN205819178 U CN 205819178U CN 201620695383 U CN201620695383 U CN 201620695383U CN 205819178 U CN205819178 U CN 205819178U
- Authority
- CN
- China
- Prior art keywords
- secondary piston
- vacuum booster
- hole
- cock body
- pedestal
- 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
Links
Abstract
Secondary piston on a kind of vacuum booster, including the cock body of column, cock body one end is provided with two for the annular groove installing leather cup；The cock body other end is provided with spring base, spring base includes pedestal and the insertion end of taper of annular, base-plates surface is evenly distributed with installation through hole along inserting end circumference, installs through hole and inserts the side of end dorsad and be provided with and install that through hole is coaxial and diameter is more than the counterbore of installation through hole.This solution provides a kind of secondary piston, structure design is more reasonable, facilitates coordinating of leather cup at spring base and secondary piston.
Description
Technical field
This utility model relates to vacuum booster accessory field, particularly to the secondary piston on vacuum booster.
Background technology
As it is shown in figure 1, if the fastening means of vacuum booster accessory front end leather cup uses bolt, the head exposure of bolt
Outside, easily produce interfere with miscellaneous part during piston movement；And the most again as the section of bearing of spring, need to arrange
Angle carries out stress dispersion, and when bolt head is tightened above, surface is non-smooth, there is the hidden danger got loose.
Utility model content
The purpose of this utility model is to provide a kind of secondary piston, and structure design is more reasonable, facilitates the skin at spring base
Bowl coordinates with secondary piston.
Before above-mentioned purpose of the present utility model has the technical scheme that on a kind of vacuum booster
Piston, including the cock body of column, cock body one end is provided with two for the annular groove installing leather cup；The cock body other end is provided with spring base,
Spring base includes the pedestal of annular and for pacifying spring-loaded insertion end, and base-plates surface is evenly distributed with peace along inserting end circumference
Dress through hole, installs through hole and inserts the side of end dorsad and be provided with and install that through hole is coaxial and diameter is more than the counterbore of installation through hole.
By using technique scheme, the head of bolt can screw in counterbore, has both shortened the length of required bolt,
Turn avoid the bolt that when bolt is tightened, surface irregularity causes and twist oblique situation appearance；And bolt will not produce during piston movement
Raw interference.
Preferably, it is provided with knuckle between pedestal and the cock body of counterbore side.
By using technique scheme, owing to pedestal needs to bear the impulsive force of spring, it is right that knuckle can play
The supporting role of pedestal, it is to avoid pedestal deforms.
Preferably, cock body inserts the end face of end dorsad and is provided with cavity.
By using technique scheme, cavity can be the end increase active strokes of cock body herein, reduces valve body
Entire length.
Preferably, the cell wall thickness between two described annular grooves is more than the cell wall thickness of annular groove opposite side.
By using technique scheme, owing to two annular grooves will install leather cup, the back-to-back stress of leather cup, to cell wall
Requirement of strength is bigger, and the thickness therefore done by cell wall herein is a bit.
Preferably, described insertion end afterbody is cylindrical, and head is taper.
By using technique scheme, the head of taper facilitates spring to insert, even if cylindrical afterbody spring occurs
Axially displacement also can guarantee that the axiality with piston.
Preferably, be provided with, between described insertion end afterbody and head, the breeze way inside contracted, breeze way diameter less than head and
The diameter of afterbody.
By using technique scheme, breeze way can reduce the impact the inserting end head shadow to inserting end afterbody
Ring, it is ensured that insert the preferable cylindricity of end afterbody.
Accompanying drawing explanation
Fig. 1 is the installation diagram of secondary piston and leather cup;
Fig. 2 is the part drawing of secondary piston.
Reference: 1, cock body；2, bolt；3, leather cup；4, pedestal；5, through hole is installed；6, counterbore；7, knuckle；8、
Annular groove；9, cavity；10, end is inserted；10a, head；10b, breeze way；10c, afterbody.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
As in figure 2 it is shown, a kind of secondary piston, including cock body 1, cock body 1 one end is provided for inserting the insertion end 10 of spring, inserts
Entering end 10 and be divided into syllogic, head 10a is taper, and centre is the breeze way 10b of column, and diameter is less than the big end of taper, afterbody
10c is the cylinder that diameter is more than breeze way 10b, arranges chamfering between breeze way 10b and afterbody 10c.
The bottom end face inserting end 10 is provided with the pedestal 4 of annular, and pedestal 4 is used for installing leather cup 3, and its circumference is evenly equipped with installation
Through hole 5, leather cup 3 and insertion end 10 homonymy, the side inserting end 10 at pedestal 4 dorsad is provided with the counterbore coaxial with installing through hole 5
6, counterbore 6 is coaxially disposed with installing through hole 5.The knuckle 7 that radius is 2mm it is provided with between pedestal 4 and cock body 1.Pedestal 4 He
Insert end 10 formation to be used for pacifying spring-loaded spring base.
The other end at cock body 1 be provided with two big for the cell wall wall thickness between the annular groove 8 installing leather cup 3, two annular grooves 8
Cell wall thickness in annular groove 8 opposite side.Cock body 1 is additionally provided with the cavity 9 of indent at the end face of this end, can be in inside for stopper rod
Activity, it is movable for stopper rod that minimizing separately sets space outside secondary piston, to reach the overall compact mesh of vacuum booster overall structure
's.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (6)
1. the secondary piston on vacuum booster, including the cock body (1) of column, is characterized in that: cock body (1) one end is provided with two
For installing the annular groove (8) of leather cup (3)；Cock body (1) other end is provided with spring base, and spring base includes the pedestal (4) of annular and uses
In pacifying spring-loaded insertion end (10), pedestal (4) surface is evenly distributed with installation through hole (5), peace along inserting end (10) circumference
Dress through hole (5) inserts the side of end (10) dorsad and is provided with and installs that through hole (5) is coaxial and diameter is more than the counterbore of installation through hole (5)
(6).
Secondary piston on vacuum booster the most according to claim 1, is characterized in that: the pedestal (4) of counterbore (6) side and plug
Knuckle (7) it is provided with between body (1).
Secondary piston on vacuum booster the most according to claim 2, is characterized in that: cock body (1) inserts end (10) dorsad
End face be provided with cavity (9).
Secondary piston on vacuum booster the most according to claim 3, is characterized in that: between two described annular grooves (8)
Cell wall thickness is more than the cell wall thickness of annular groove (8) opposite side.
Secondary piston on vacuum booster the most according to claim 4, is characterized in that: described insertion end (10) afterbody
(10c) being cylindrical, head (10a) is taper.
Secondary piston on vacuum booster the most according to claim 5, is characterized in that: described insertion end (10) afterbody
(10c) and be provided with the breeze way (10b) inside contracted between head (10a), breeze way (10b) diameter is less than head (10a) and afterbody
(10c) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620695383.3U CN205819178U (en) | 2016-07-05 | 2016-07-05 | Secondary piston on vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620695383.3U CN205819178U (en) | 2016-07-05 | 2016-07-05 | Secondary piston on vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205819178U true CN205819178U (en) | 2016-12-21 |
Family
ID=57567647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620695383.3U Expired - Fee Related CN205819178U (en) | 2016-07-05 | 2016-07-05 | Secondary piston on vacuum booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205819178U (en) |
-
2016
- 2016-07-05 CN CN201620695383.3U patent/CN205819178U/en not_active Expired - Fee Related
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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: 20161221 Termination date: 20180705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |