CN102941849A - Brake master cylinder of automobile hydraulic brake - Google Patents
Brake master cylinder of automobile hydraulic brake Download PDFInfo
- Publication number
- CN102941849A CN102941849A CN2012104878285A CN201210487828A CN102941849A CN 102941849 A CN102941849 A CN 102941849A CN 2012104878285 A CN2012104878285 A CN 2012104878285A CN 201210487828 A CN201210487828 A CN 201210487828A CN 102941849 A CN102941849 A CN 102941849A
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- brake
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- cylinder body
- positioning spacer
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Abstract
The invention discloses a brake master cylinder of an automobile hydraulic brake. The brake master cylinder comprises a cylinder body, wherein the cylinder body is provided with a brake cavity, an oil sealing end cover is arranged on an opening of the brake cavity, an oil inlet hole is arranged on the cylinder body, the oil inlet hole is connected with a liquid storage cavity arranged in the cylinder body, a location separation sleeve is arranged between the liquid storage cavity and the brake cavity and sleeved outside a piston in a clearance mode, a location separation sleeve through hole communicated with the liquid storage cavity is arranged on the location separation sleeve, a compensating hole corresponding to the location separation sleeve through hole and communicated with the brake cavity is arranged on the piston, an oil outlet hole is arranged on the cylinder body, a return spring is arranged between the piston and the cylinder body, a first annular gap and a second annular gap are arranged on two sides of the location separation sleeve, and a packing cup is respectively arranged in the first annular gap and the second annular gap. The location separation sleeve gaps are sleeved outside the piston, brake fluid enters the brake cavity through the gaps between the location separation sleeve and the piston, friction on the location separation sleeve and the piston and impact on the packing cups are reduced, the piston and the packing cups are protected, and service life of the brake master cylinder is prolonged.
Description
Technical field
The present invention relates to a kind of hydraulic brake master brake cylinder.
Background technology
Master brake cylinder is the main brake component in the hydraulic braking system for automobile, by the braking liquid of its output through oil outlet by the brake wheel cylinder on the brake piping input brake disc, thereby realize the purpose of automobile brake.
Common master brake cylinder positioning spacer is that powdered metallurgical material is made, piston is made by cast aluminium, because there are Mismachining tolerance in cylinder body and positioning spacer part in the course of processing, can not guarantee that after assembling two workpiece are concentric, the positioning spacer inner hole surface directly contacts with the outside piston face, in the normal brake application process because piston back-and-forth movement, there are the phenomenon of mutually mutual friction in piston and positioning spacer, easily produce dust, easily scratch apron, cause leather cup shortening in service life, in corresponding service life of reducing master brake cylinder, affect braking effect and cause the sealing effectiveness of master cylinder to descend.
Summary of the invention
Technical matters to be solved by this invention provides a kind of brake master cylinder of car hydraulic brake reliable, long service life that seals.
For solving the problems of the technologies described above, technical scheme of the present invention is: brake master cylinder of car hydraulic brake, comprise cylinder body, described cylinder body is provided with brake chamber, described cylinder body one side is provided with the brake chamber opening, described brake chamber opening is provided with the oil sealing end cap, described cylinder body is provided with the fuel feed hole that fuel inlet fitting is installed, described fuel feed hole is connected with the liquid storage cylinder that is located in the cylinder body, be provided with positioning spacer between described liquid storage cylinder and the described brake chamber, described positioning spacer gap is sleeved on outside the piston, described positioning spacer is provided with the positioning spacer through hole that is communicated with liquid storage cylinder, described piston is provided with the compensation orifice corresponding with described positioning spacer through hole, described compensation orifice and described brake chamber are connected, described cylinder body is provided with the oil outlet that is communicated with described brake chamber, be provided with pull back spring between described piston and the described cylinder body, described positioning spacer both sides are provided with the first circular clearance and the second circular clearance, the described first annular gap digit is between the outer surface of the interior perimeter surface of described cylinder body brake chamber and piston, described the second circular clearance is respectively equipped with leather cup in described the first circular clearance and described the second circular clearance between described oil sealing end cap and described piston outer peripheral face.
As preferred technical scheme, installation bonded to each other between described positioning spacer and the described oil sealing end cap.
As preferred technical scheme, described positioning spacer is poly terephthalic acid fourth two fat positioning spacers.
Owing to adopted technique scheme, brake master cylinder of car hydraulic brake, comprise cylinder body, described cylinder body is provided with brake chamber, described cylinder body one side is provided with the brake chamber opening, described brake chamber opening is provided with the oil sealing end cap, described cylinder body is provided with the fuel feed hole that fuel inlet fitting is installed, described fuel feed hole is connected with the liquid storage cylinder that is located in the cylinder body, be provided with positioning spacer between described liquid storage cylinder and the described brake chamber, described positioning spacer gap is sleeved on outside the piston, described positioning spacer is provided with the positioning spacer through hole that is communicated with liquid storage cylinder, described piston is provided with the compensation orifice corresponding with described positioning spacer through hole, described compensation orifice and described brake chamber are connected, described cylinder body is provided with the oil outlet that is communicated with described brake chamber, be provided with pull back spring between described piston and the described cylinder body, described positioning spacer both sides are provided with the first circular clearance and the second circular clearance, the described first annular gap digit is between the outer surface of the interior perimeter surface of described cylinder body brake chamber and piston, described the second circular clearance is respectively equipped with leather cup in described the first circular clearance and described the second circular clearance between described oil sealing end cap and described piston outer peripheral face; Described positioning spacer gap is sleeved on outside the piston; braking liquid enters brake chamber by the gap of positioning spacer and piston; thereby reduced the friction of positioning spacer and piston and to the impact of leather cup; thereby piston and leather cup have been played protective effect, the whole service life of master brake cylinder is prolonged greatly.
Description of drawings
Accompanying drawing is the structural representation of the embodiment of the invention;
Among the figure: the 1-cylinder body; The 2-brake chamber; 3-oil sealing end cap; The 4-fuel feed hole; The 5-liquid storage cylinder; The 6-positioning spacer; The 7-piston; 8-positioning spacer through hole; The 9-compensation orifice; The 10-oil outlet; The 11-pull back spring; 12-the first circular clearance; 13-the second circular clearance; The 14-primary cup; The 15-secontary cup.
The specific embodiment
As shown in drawings, brake master cylinder of car hydraulic brake, comprise cylinder body 1, described cylinder body 1 is provided with brake chamber 2, described cylinder body 1 one sides are provided with the brake chamber opening, described brake chamber opening is provided with oil sealing end cap 3, described cylinder body 1 is provided with the fuel feed hole 4 that fuel inlet fitting is installed, described fuel feed hole 4 is connected with the liquid storage cylinder 5 that is located in the cylinder body 1, be provided with positioning spacer 6 between described liquid storage cylinder 5 and the described brake chamber 2, described positioning spacer 6 gaps are sleeved on outside the piston 7, described positioning spacer 6 is provided with the positioning spacer through hole 8 that is communicated with liquid storage cylinder 5, described piston 7 is provided with the compensation orifice 9 corresponding with described positioning spacer through hole 8, described compensation orifice 9 and described brake chamber 2 are connected, described cylinder body 1 is provided with the oil outlet 10 that is communicated with described brake chamber 2, be provided with pull back spring 11 between described piston 7 and the described cylinder body 1, described positioning spacer 6 both sides are provided with the first circular clearance 12 and the second circular clearance 13, described the first circular clearance 12 is between the outer surface of the interior perimeter surface of described cylinder body 1 brake chamber 2 and piston 7, described the second circular clearance 13 is respectively equipped with primary cup 14 and secontary cup 15 in described the first circular clearance 12 and described the second circular clearance 13 between described oil sealing end cap 3 and described piston 7 outer peripheral faces.
Installation bonded to each other between described positioning spacer 6 and the described oil sealing end cap 3.
Described positioning spacer 6 is poly terephthalic acid fourth two fat positioning spacers.
When initial state (output of brakeless liquid), the braking liquid of brake chamber 2 is connected with liquid storage cylinder 5 by the compensation orifice 9 on the piston 7, and liquid storage cylinder 5 links to each other with receiver by the fuel inlet fitting of installing on the fuel feed hole 4, and this moment, brake chamber 2 hydraulic pressure were zero.
As input thrust F, pushing piston 7 reaches, when the compensation orifice 9 on the piston 7 was blocked by primary cup 14, brake chamber 2 no longer was communicated with liquid storage cylinder 5, brake chamber 2 begins to produce hydraulic pressure, and the oil outlet 10 of braking liquid on cylinder body 1 enters brake wheel cylinder and produce braking through brake piping.
After finishing braking, cancel thrust F, piston 7 is rapid return under the effect of pull back spring 11, brake chamber 2 interior generation negative pressure, under the effect of negative pressure, braking liquid through the rear portion of positioning spacer 6 with the diameter clearance arrival primary cup 14 of piston 7, enters brake chamber 2 through primary cup 14 peripheries by liquid storage cylinder 5 again, and the braking liquid in brake wheel cylinder and the pipeline partly returns brake chamber 2 simultaneously.During piston 7 complete return, under the effect of drg, the braking liquid in the brake wheel cylinder enters brake chamber 2 through oil outlet 10, and the compensation orifice 9 of unnecessary braking liquid on piston 7 directly enters liquid storage cylinder 5.After the brake wheel cylinder motion finished, unnecessary braking liquid flow back into liquid storage cylinder 5 through the compensation orifice 9 of piston 7, flow back into through fuel inlet fitting and set up new balance in the receiver.
When braking during piston 7 back and forth movement, reduced the friction of positioning spacer 6 with piston 7, thereby piston 7, primary cup 14 and secontary cup 15 have been played protective effect, prolonged the whole service life of master brake cylinder.
Because positioning spacer 6 is poly terephthalic acid fourth two fat positioning spacers, improve whole processing conformability.Increased the axial finish size of positioning spacer, installation bonded to each other between described positioning spacer 6 and the described oil sealing end cap 3, so that very close to each other between described positioning spacer 6 and the described oil sealing end cap 3, make positioning spacer 6 become inactive part.Described positioning spacer 6 gaps are sleeved on outside the piston 7; braking liquid enters brake chamber by the gap of positioning spacer 6 and piston 7; thereby reduced the friction of positioning spacer 6 and piston 7 and to the impact of primary cup 14; thereby piston and leather cup have been played protective effect, made the whole service life of master brake cylinder prolong more than 30%.
More than show and described groundwork of the present invention, principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. brake master cylinder of car hydraulic brake, comprise cylinder body, it is characterized in that: described cylinder body is provided with brake chamber, described cylinder body one side is provided with the brake chamber opening, described brake chamber opening is provided with the oil sealing end cap, described cylinder body is provided with the fuel feed hole that fuel inlet fitting is installed, described fuel feed hole is connected with the liquid storage cylinder that is located in the cylinder body, be provided with positioning spacer between described liquid storage cylinder and the described brake chamber, described positioning spacer gap is sleeved on outside the piston, described positioning spacer is provided with the positioning spacer through hole that is communicated with liquid storage cylinder, described piston is provided with the compensation orifice corresponding with described positioning spacer through hole, described compensation orifice and described brake chamber are connected, described cylinder body is provided with the oil outlet that is communicated with described brake chamber, be provided with pull back spring between described piston and the described cylinder body, described positioning spacer both sides are provided with the first circular clearance and the second circular clearance, the described first annular gap digit is between the outer surface of the interior perimeter surface of described cylinder body brake chamber and piston, described the second circular clearance is respectively equipped with leather cup in described the first circular clearance and described the second circular clearance between described oil sealing end cap and described piston outer peripheral face.
2. brake master cylinder of car hydraulic brake as claimed in claim 1 is characterized in that: installation bonded to each other between described positioning spacer and the described oil sealing end cap.
3. brake master cylinder of car hydraulic brake as claimed in claim 2, it is characterized in that: described positioning spacer is poly terephthalic acid fourth two fat positioning spacers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104878285A CN102941849A (en) | 2012-11-27 | 2012-11-27 | Brake master cylinder of automobile hydraulic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104878285A CN102941849A (en) | 2012-11-27 | 2012-11-27 | Brake master cylinder of automobile hydraulic brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102941849A true CN102941849A (en) | 2013-02-27 |
Family
ID=47724875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104878285A Pending CN102941849A (en) | 2012-11-27 | 2012-11-27 | Brake master cylinder of automobile hydraulic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102941849A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443623A (en) * | 2015-12-22 | 2016-03-30 | 芜湖恒坤汽车部件有限公司 | Brake single-wheel cylinder |
| CN110758364A (en) * | 2019-11-04 | 2020-02-07 | 浙江奔腾智能制动系统有限公司 | High-performance hydraulic brake master cylinder |
| CN114810874A (en) * | 2022-05-13 | 2022-07-29 | 浙江奔腾智能制动系统有限公司 | Plunger type brake master cylinder suitable for single-cavity structure of tractor |
| CN114810874B (en) * | 2022-05-13 | 2024-04-26 | 浙江奔腾智能制动系统有限公司 | Plunger type brake master cylinder suitable for single-cavity structure of tractor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4320624A (en) * | 1979-03-28 | 1982-03-23 | Nissin Kogyo Kabushiki Kaisha | Master cylinder |
| CN2550223Y (en) * | 2002-06-19 | 2003-05-14 | 臧福运 | Single pipeline hydraulic brake main cylinder |
| US20040123593A1 (en) * | 2002-12-25 | 2004-07-01 | Advics Co., Ltd. | Hydraulic brake apparatus |
| JP2005075258A (en) * | 2003-09-03 | 2005-03-24 | Advics:Kk | Brake master cylinder and manufacturing method thereof |
| CN101239618A (en) * | 2007-12-05 | 2008-08-13 | 臧福运 | Brake master cylinder of car hydraulic brake |
| CN202923630U (en) * | 2012-11-27 | 2013-05-08 | 日照市北业制动泵有限公司 | Brake master cylinder of automotive hydraulic brake |
-
2012
- 2012-11-27 CN CN2012104878285A patent/CN102941849A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4320624A (en) * | 1979-03-28 | 1982-03-23 | Nissin Kogyo Kabushiki Kaisha | Master cylinder |
| CN2550223Y (en) * | 2002-06-19 | 2003-05-14 | 臧福运 | Single pipeline hydraulic brake main cylinder |
| US20040123593A1 (en) * | 2002-12-25 | 2004-07-01 | Advics Co., Ltd. | Hydraulic brake apparatus |
| JP2005075258A (en) * | 2003-09-03 | 2005-03-24 | Advics:Kk | Brake master cylinder and manufacturing method thereof |
| CN101239618A (en) * | 2007-12-05 | 2008-08-13 | 臧福运 | Brake master cylinder of car hydraulic brake |
| CN202923630U (en) * | 2012-11-27 | 2013-05-08 | 日照市北业制动泵有限公司 | Brake master cylinder of automotive hydraulic brake |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443623A (en) * | 2015-12-22 | 2016-03-30 | 芜湖恒坤汽车部件有限公司 | Brake single-wheel cylinder |
| CN110758364A (en) * | 2019-11-04 | 2020-02-07 | 浙江奔腾智能制动系统有限公司 | High-performance hydraulic brake master cylinder |
| CN114810874A (en) * | 2022-05-13 | 2022-07-29 | 浙江奔腾智能制动系统有限公司 | Plunger type brake master cylinder suitable for single-cavity structure of tractor |
| CN114810874B (en) * | 2022-05-13 | 2024-04-26 | 浙江奔腾智能制动系统有限公司 | Plunger type brake master cylinder suitable for single-cavity structure of tractor |
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Application publication date: 20130227 |