CN203888777U - Piston device of brake master cylinder - Google Patents
Piston device of brake master cylinder Download PDFInfo
- Publication number
- CN203888777U CN203888777U CN201420316637.7U CN201420316637U CN203888777U CN 203888777 U CN203888777 U CN 203888777U CN 201420316637 U CN201420316637 U CN 201420316637U CN 203888777 U CN203888777 U CN 203888777U
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- CN
- China
- Prior art keywords
- plate body
- axle sleeve
- piston rod
- master cylinder
- brake
- 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
The utility model discloses a piston device of a brake master cylinder. The piston device comprises a piston rod, a rear end sealing plate body is arranged at the rear end of the piston rod, a connecting rod is arranged on the rear end sealing plate body, the connecting rod and the piston rod are coaxial, a vertically-arranged fixed piece is arranged on the connecting rod, the fixed piece and the rear end sealing plate body form a mounting portion for mounting an annular sealing strip, a radial pre-tightening mechanism is arranged on the mounting portion, and comprises two rows of short cylindrical shaft sleeves matched with the connecting rod, and a fastening nut is arranged on the connecting rod. A retreating blocking gasket is arranged between the fastening nut and the two rows of short cylindrical shaft sleeves, and the two rows of short cylindrical shaft sleeves are sleeved with a shaft sleeve cover. The radial pre-tightening mechanism is arranged on the piston device of the brake master cylinder, and is matched with an axial pre-tightening mechanism, the piston is adjusted, an inner ring of the double-row short cylindrical shaft sleeve has the appropriate expansion amount, and therefore radial negative clearances are obtained. Radial pre-tightening is achieved, and jumping of the piston device of the brake master cylinder is reduced.
Description
Technical field
The utility model relates to a kind of brake master cylinder piston device.
Background technology
Brake master cylinder assembly is as the important component part of brake system of car, and its performance quality not only directly affects the vehicle performance of automobile, and, also closely bound up with the people's life security.Its general and vacuum booster composition, is arranged on the front coaming plate of automobile, with its mode of operation of brake pedal control.The general braking that adopts a cavity control trailing wheel and front-wheel of master brake cylinder of the prior art, produces the problems such as leakage of oil like this once respective chamber, cannot complete braking function.Or adopt two master brake cylinders, front-wheel or the way of escape are carried out to independent brake, although having solved a cylinder body leakage of oil also can be to the technical matters of automobile brake, but need to arrange two master brake cylinders, it has increased car production cost, and take the large quantity space in automobile, brought very large difficulty to motor vehicle assembly layout.In order to realize the independent brake to vehicle front and trailing wheel, and the space of saving master brake cylinder layout, not yet there is at present actv. technological means, especially piston moves under long-time harsh environment, can produce vibration even beats, bring huge infringement to master brake cylinder, even cause master brake cylinder cisco unity malfunction.
Utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of brake master cylinder piston device.
The technical solution of the utility model is as follows:
A kind of brake master cylinder piston device, it comprises piston rod, wherein, piston rod rear end is provided with back-end sealing plate body, on back-end sealing plate body, be provided with pipe link, pipe link is coaxial with piston rod, on pipe link, be provided with the fixed plate of vertical layout, fixed plate and back-end sealing plate body form one for the installation portion of annular sealing strip is installed, on this installation portion, be provided with a radial tightening mechanism, radial tightening mechanism comprises the biserial short cylindrical axle sleeve suitable with pipe link, on pipe link, be provided with a clamp nut, between clamp nut and biserial short cylindrical axle sleeve, be provided with a floor clip, on biserial short cylindrical axle sleeve, be equipped with axle sleeve lid, biserial short cylindrical axle sleeve, clamp nut and floor clip are all positioned at axle sleeve lid.
Described brake master cylinder piston device, wherein, above-mentioned piston rod front end is provided with forward end seal plate body, and forward end seal plate body, above-mentioned back-end sealing plate body are for forming for sap cavity with the inboard wall of cylinder block of bicavate master brake cylinder, and this is identical with the length of piston rod for the length of sap cavity; On forward end seal plate body, be provided with the mounting head for connecting the second pull back spring assembly in bicavate master brake cylinder; On the piston rod at forward end seal plate body rear, be provided with an axial pretightening mechanism, this axial pretightening mechanism comprises the circular cone axle sleeve that is arranged on piston rod, and on piston rod, a side is provided with circular nut, between circular nut and circular cone axle sleeve, is provided with back-up ring; Cone axis puts and is provided with a fixed cap, and circular cone axle sleeve, back-up ring and circular nut are all positioned at fixed cap.
Described brake master cylinder piston device, wherein, above-mentioned mounting head is step mounting head, forms one for the initiatively installation position of leather cup is installed between the end of this step mounting head and forward end seal plate body.
Described brake master cylinder piston device, wherein, is provided with the mounting groove extending vertically in above-mentioned pipe link, this mounting groove is used for connecting the first pull back spring assembly in bicavate master brake cylinder.
The utility model provides a kind of brake master cylinder piston device, radial tightening mechanism is set on brake master cylinder piston device, and match with axial pretightening mechanism, piston is adjusted, biserial short cylindrical axle sleeve inner ring has suitable swell increment and is radially born play, realize radial tightening, reduced beating of brake master cylinder piston device; By circular cone axle sleeve, piston rod is carried out to pretension, realize axial pretightening, brake master cylinder piston device has been beated less, improved the work stressing conditions of brake master cylinder piston device simultaneously, and then improved the stability of master brake cylinder, reduce the maintenance cost of master brake cylinder.In addition, the utility model forms for sap cavity the inboard wall of cylinder block of forward end seal plate body, back-end sealing plate body and bicavate master brake cylinder, coordinate again former master brake cylinder itself to have for sap cavity, two brake chambers and two modes for sap cavity are formed, solved the problem to vehicle front and trailing wheel independent brake, save again the arrangement space of automobile component, reduced the productive costs of automobile simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of brake master cylinder piston device in the utility model;
Fig. 2 is the structural representation of pre-tightening mechanism radially in the utility model;
Fig. 3 is the structural representation of axial pre-tightening mechanism in the utility model;
Fig. 4 is the structural representation to master brake cylinder by brake master cylinder piston application of installation.
Detailed description of the invention
The utility model provides a kind of brake master cylinder piston device, for making the purpose of this utility model, technical scheme and effect clearer, clear and definite, below the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of brake master cylinder piston device, as shown in Figures 1 and 2, it comprises piston rod 1, wherein, piston rod 1 rear end is provided with back-end sealing plate body 2, on back-end sealing plate body 2, be provided with pipe link 3, pipe link 3 is coaxial with piston rod 1, on pipe link 3, be provided with the fixed plate 4 of vertical layout, fixed plate 4 forms one for the installation portion 5 of annular sealing strip is installed with back-end sealing plate body 2, on this installation portion 5, be provided with a radial tightening mechanism 6, radial tightening mechanism 6 comprises the biserial short cylindrical axle sleeve 7 suitable with pipe link, on pipe link 3, be provided with a clamp nut 8, between clamp nut 8 and biserial short cylindrical axle sleeve 7, be provided with a floor clip 9, on biserial short cylindrical axle sleeve 7, be equipped with axle sleeve lid 10, biserial short cylindrical axle sleeve 7, clamp nut 8 are all positioned at axle sleeve lid 10 with floor clip 9.By coordinating of clamp nut 8 and floor clip 9, the position relationship of locking biserial short cylindrical axle sleeve 7 and pipe link 3, make the inner ring of biserial short cylindrical axle sleeve 7 have suitable swell increment and radially be born play, realized radial tightening, the stability while having improved the work of brake master cylinder piston device.
In another preferred embodiment of the present utility model, as shown in Figures 1 and 3, above-mentioned piston rod 1 front end is provided with forward end seal plate body 11, forward end seal plate body 11, above-mentioned back-end sealing plate body 2 are for forming for sap cavity 25 with the inboard wall of cylinder block of bicavate master brake cylinder 12, and this length for sap cavity 25 is identical with the length of piston rod 1; On forward end seal plate body 11, be provided with the mounting head 14 for connecting the second pull back spring assembly in bicavate master brake cylinder 13; On the piston rod 1 at forward end seal plate body 11 rears, be provided with an axial pretightening mechanism 15, this axial pretightening mechanism 15 comprises the circular cone axle sleeve 16 that is arranged on piston rod 1, on piston rod 1, a side is provided with circular nut 17, between circular nut 17 and circular cone axle sleeve 16, is provided with back-up ring 18; On circular cone axle sleeve 16, be provided with a fixed cap 19, circular cone axle sleeve 16, back-up ring 18 are all positioned at fixed cap 19 with circular nut 17.By adjusting circular nut 17 to 16 1 axial thrusts of circular cone axle sleeve, and circular nut 17 coordinates with back-up ring 18, the position relationship of locking circular cone axle sleeve 16 and piston rod 1, has improved stability when piston rod 1 is worked, stability when further brake master cylinder piston device is worked.
In order further to describe the advantage of above-mentioned piston structure, at this, above-mentioned brake master cylinder piston device is combined and described with bicavate master brake cylinder 12, as shown in Fig. 1 and Fig. 4, above-mentioned piston structure is brought in bicavate master brake cylinder 12, form a brake chamber 20 at the front end of piston structure, form at piston rod place for sap cavity 25, be connected with another brake chamber 21 at piston structure rear, the rear of this another brake chamber 21 also has another for sap cavity 22, thereby forms two brake chambers and two modes for sap cavity.
Further, above-mentioned mounting head 14 is step mounting head, forms one for the initiatively installation position 23 of leather cup is installed between the end of this step mounting head and forward end seal plate body.And in above-mentioned pipe link 3, be provided with the mounting groove 24 extending vertically, this mounting groove 24 is for connecting the first pull back spring assembly in bicavate master brake cylinder 13.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or convert, all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (4)
1. a brake master cylinder piston device, it comprises piston rod, it is characterized in that, piston rod rear end is provided with back-end sealing plate body, on back-end sealing plate body, be provided with pipe link, pipe link is coaxial with piston rod, on pipe link, be provided with the fixed plate of vertical layout, fixed plate and back-end sealing plate body form one for the installation portion of annular sealing strip is installed, on this installation portion, be provided with a radial tightening mechanism, radial tightening mechanism comprises the biserial short cylindrical axle sleeve suitable with pipe link, on pipe link, be provided with a clamp nut, between clamp nut and biserial short cylindrical axle sleeve, be provided with a floor clip, on biserial short cylindrical axle sleeve, be equipped with axle sleeve lid, biserial short cylindrical axle sleeve, clamp nut and floor clip are all positioned at axle sleeve lid.
2. brake master cylinder piston device according to claim 1, it is characterized in that, above-mentioned piston rod front end is provided with forward end seal plate body, forward end seal plate body, above-mentioned back-end sealing plate body are for forming for sap cavity with the inboard wall of cylinder block of bicavate master brake cylinder, and this is identical with the length of piston rod for the length of sap cavity; On forward end seal plate body, be provided with the mounting head for connecting the second pull back spring assembly in bicavate master brake cylinder; On the piston rod at forward end seal plate body rear, be provided with an axial pretightening mechanism, this axial pretightening mechanism comprises the circular cone axle sleeve that is arranged on piston rod, and on piston rod, a side is provided with circular nut, between circular nut and circular cone axle sleeve, is provided with back-up ring; Cone axis puts and is provided with a fixed cap, and circular cone axle sleeve, back-up ring and circular nut are all positioned at fixed cap.
3. brake master cylinder piston device according to claim 2, is characterized in that, above-mentioned mounting head is step mounting head, forms one for the initiatively installation position of leather cup is installed between the end of this step mounting head and forward end seal plate body.
4. brake master cylinder piston device according to claim 2, is characterized in that, is provided with the mounting groove extending vertically in above-mentioned pipe link, and this mounting groove is used for connecting the first pull back spring assembly in bicavate master brake cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420316637.7U CN203888777U (en) | 2014-06-09 | 2014-06-09 | Piston device of brake master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420316637.7U CN203888777U (en) | 2014-06-09 | 2014-06-09 | Piston device of brake master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203888777U true CN203888777U (en) | 2014-10-22 |
Family
ID=51715216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420316637.7U Expired - Fee Related CN203888777U (en) | 2014-06-09 | 2014-06-09 | Piston device of brake master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203888777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795077A (en) * | 2020-06-09 | 2020-10-20 | 江苏理工学院 | Bearing preloading device |
-
2014
- 2014-06-09 CN CN201420316637.7U patent/CN203888777U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795077A (en) * | 2020-06-09 | 2020-10-20 | 江苏理工学院 | Bearing preloading device |
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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: 20141022 Termination date: 20150609 |
|
| EXPY | Termination of patent right or utility model |