CN207510405U - A kind of novel plunger-type master cylinder - Google Patents
A kind of novel plunger-type master cylinder Download PDFInfo
- Publication number
- CN207510405U CN207510405U CN201721680691.XU CN201721680691U CN207510405U CN 207510405 U CN207510405 U CN 207510405U CN 201721680691 U CN201721680691 U CN 201721680691U CN 207510405 U CN207510405 U CN 207510405U
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- CN
- China
- Prior art keywords
- steel ball
- piston
- hole
- pilot hole
- mounting hole
- 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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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
A kind of novel plunger-type master cylinder, secondary piston component and rear piston component include piston, piston is divided into piston nose head and piston main body, piston nose head is located at before piston main body, piston nose head is equipped with radial through-hole, steel ball pilot hole is additionally provided on housing, steel ball pilot hole is arranged on the inlet of steel ball mounting hole, steel ball mounting hole is interference fitted with steel ball, steel ball pilot hole is oriented to steel ball to be coordinated, steel ball mounting hole is directed at linking with steel ball pilot hole, the outer wall on the piston nose head where radial through-hole is inwardly indented, there is the first fillet surface transition connection between the outer wall on piston nose head and the outer wall of piston main body；Steel ball pilot hole play the guiding role and steel ball stress is avoided to shift, can smoothly and easily it enter in steel ball mounting hole from steel ball pilot hole when being installed so as to steel ball, it is easily assembled and is not susceptible to reveal, apron is not contacted with the radial through-hole on piston nose head, it avoids rubbing, increases the apron service life.
Description
Technical field
The utility model is related to a kind of novel plunger-type master cylinders.
Background technology
Master cylinder（Master Cylinder）Also referred to as brake main oil（Gas）, its main function is to push brake fluid
（Or gas）It is transmitted among each brake cylinder and pushes piston.
It is interference fitted in the steel ball press-in steel ball mounting hole of plunger brake master cylinder, during installation, steel ball is directly from steel
The aperture stress of pearl mounting hole is pressed into steel ball mounting hole, but easily pressure is inclined for steel ball stress, influences sealing performance, causes to let out
Leakage leads to the reduction of master cylinder qualification rate.
The piston nose head of secondary piston component and rear piston component has radial through-hole, the housing cavity wall of master cylinder
Apron is distributed with, during forward and backward piston component axially moves back and forth, the aperture of apron and radial through-hole rubs repeatedly,
It is easy to wear, influence the service life of master cylinder.
Utility model content
In view of technical problem present in background technology, the technical issues of the utility model solves, which is intended to provide one kind, to be made
With longer life expectancy, the higher novel plunger-type master cylinder of product qualification rate.
In order to solve the above technical problems, the utility model adopts the following technical scheme：A kind of novel plunger-type braking is total
Pump includes housing, secondary piston component and rear piston component, has steel ball mounting hole on housing, the internal chamber wall of housing is equipped with
Apron, secondary piston component and rear piston component include piston, and piston is divided into piston nose head and piston main body, before piston
End head is located at before piston main body, and piston nose head is equipped with radial through-hole, it is characterised in that：Steel ball is additionally provided on housing to lead
Xiang Kong, steel ball pilot hole are arranged on the inlet of steel ball mounting hole, and steel ball mounting hole is interference fitted with steel ball, steel ball pilot hole with
Steel ball is oriented to cooperation, and steel ball mounting hole is directed at linking with steel ball pilot hole, the outer wall on the piston nose head where radial through-hole
It is inwardly indented, there is the first fillet surface transition connection between the outer wall on piston nose head and the outer wall of piston main body.
The chamfering of first fillet surface is 30 degree.
There is the second fillet surface between steel ball pilot hole and steel ball mounting hole.
The beneficial effects of the utility model are to increase steel ball pilot hole to be directed at linking, steel ball pilot hole with steel ball mounting hole
It play the guiding role and steel ball stress is avoided to shift, it can be smoothly and easily from steel ball pilot hole when being installed so as to steel ball
Into in steel ball mounting hole, it is easily assembled and is not susceptible to reveal.The outer wall retraction on piston nose head, one is separated by with apron
Determining deviation, apron do not contact with the radial through-hole on piston nose head, avoid contact with and rub, therefore increase apron use
Service life.In piston axial movement, the first fillet surface make apron smooth with piston main body cooperation be sealed.Therefore, this reality
There is substantive distinguishing features and progress compared with prior art with novel.
Description of the drawings
The embodiment of the utility model and the related details and operation principle of embodiment are described below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
Referring to attached drawing, a kind of novel plunger-type master cylinder in present embodiment, include housing 1, secondary piston component and
Piston component afterwards.There is steel ball mounting hole, the internal chamber wall of housing is equipped with apron 2, and apron 2 is embedded in internal chamber wall on housing 1
In annular groove, secondary piston component and rear piston component include piston 3,4, and 3,4 points of piston is piston nose head 31,41
With piston main body 32,42, piston nose head 31,41 is located at before piston main body 32,42, piston nose portion 31,41 and piston
Main body 32,42 is structure as a whole.Apron 2 coordinates with piston main body sealing, and piston nose head is equipped with radial through-hole 33,43, diameter
To through-hole function to be used as oily channel under original state.Steel ball pilot hole 5 is additionally provided on housing, steel ball pilot hole 5 is arranged on
The inlet of steel ball mounting hole 6, steel ball mounting hole 6 are interference fitted with steel ball 7, and steel ball pilot hole 5 is oriented to steel ball 7 to be coordinated, will
The merging of steel ball 7 is mounted in steel ball mounting hole 6, and so as to have the function that sealing, steel ball mounting hole is directed at rank with steel ball pilot hole
It connects, steel ball pilot hole 5 play the guiding role and steel ball stress is avoided to shift, can smoothly and conveniently when being installed so as to steel ball
Ground enters from steel ball pilot hole in steel ball mounting hole, is easily assembled and is not susceptible to reveal.
The outer wall on the piston nose head 31,41 where radial through-hole 33,43 is inwardly indented, the outer wall on piston nose head
Between the outer wall of piston main body there is the first fillet surface transition to connect.The outer wall retraction on piston nose head 31,41, with apron
Separately at regular intervals, apron is not contacted with the radial through-hole 31,41 on piston nose head, is avoided contact with and is rubbed, therefore
Increase apron service life.In piston axial movement, the first fillet surface makes apron smooth and piston main body cooperation progress
Sealing, the lip of apron is along the first fillet surface to the outer wall for relatively sliding to piston main body.The chamfering of first fillet surface is 30 degree,
It is the most suitable.
Steel ball mounting hole is directed at linking with steel ball pilot hole, can also be set between steel ball pilot hole and steel ball mounting hole
Second fillet surface forms taper and is oriented to（Form bellmouth）Guiding alignment result is more preferable, and steel ball mounting hole and steel ball pilot hole are equal
For cylindrical hole.
Claims (3)
1. a kind of novel plunger-type master cylinder, includes housing（1）, secondary piston component and rear piston component, have on housing
Steel ball mounting hole, the internal chamber wall of housing are equipped with apron（2）, secondary piston component and rear piston component include piston（3、4）,
Piston is divided into piston nose head（31、41）And piston main body（32、42）, piston nose head is located at before piston main body, living
It fills in leading head and is equipped with radial through-hole（33、43）, it is characterised in that：Housing（1）On be additionally provided with steel ball pilot hole（5）, steel ball leads
Xiang Kong（5）It is arranged on steel ball mounting hole（6）Inlet, steel ball mounting hole（6）With steel ball（7）Interference fit, steel ball pilot hole
It is oriented to and coordinates with steel ball, steel ball mounting hole is directed at linking with steel ball pilot hole, outside the piston nose head where radial through-hole
Wall is inwardly indented, and has the first fillet surface transition connection between the outer wall on piston nose head and the outer wall of piston main body.
2. a kind of novel plunger-type master cylinder as described in claim 1, it is characterised in that：The chamfering of first fillet surface is 30
Degree.
3. a kind of novel plunger-type master cylinder as described in claim 1, it is characterised in that：Steel ball pilot hole is installed with steel ball
There is the second fillet surface between hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680691.XU CN207510405U (en) | 2017-12-06 | 2017-12-06 | A kind of novel plunger-type master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680691.XU CN207510405U (en) | 2017-12-06 | 2017-12-06 | A kind of novel plunger-type master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207510405U true CN207510405U (en) | 2018-06-19 |
Family
ID=62543780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721680691.XU Expired - Fee Related CN207510405U (en) | 2017-12-06 | 2017-12-06 | A kind of novel plunger-type master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207510405U (en) |
-
2017
- 2017-12-06 CN CN201721680691.XU patent/CN207510405U/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: 20180619 Termination date: 20211206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |