CN101520036A - Oil scavenging pump of braking anti-locked system of automobile - Google Patents
Oil scavenging pump of braking anti-locked system of automobile Download PDFInfo
- Publication number
- CN101520036A CN101520036A CN200910301368A CN200910301368A CN101520036A CN 101520036 A CN101520036 A CN 101520036A CN 200910301368 A CN200910301368 A CN 200910301368A CN 200910301368 A CN200910301368 A CN 200910301368A CN 101520036 A CN101520036 A CN 101520036A
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- Prior art keywords
- oil
- pump housing
- pump
- oil outlet
- spring
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- 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.)
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- 230000002000 scavenging effect Effects 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 7
- 230000010354 integration Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 4
- 238000012856 packing Methods 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
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- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention relates to an oil scavenging pump of a braking anti-locked system of an automobile. A plug is mounted on the oil outlet of a pump body; a first small hole, a second small hole, a return tank and an oil outlet tank are arranged on the plug. When pumped out of the oil outlet of the oil scavenging pump, braking liquid flows out from the first small hole, wherein one part of the braking liquid directly flows out through the oil outlet tank, and the other part of the braking liquid returns for the secondary reflow through the return tank, then flows out from the second small hole to the oil outlet at the high pressure end of the oil scavenging pump through the oil outlet tank. Therefore, the original primary liquid forms a damping structure by throttle of small holes and a secondary loop to generate damping force to the oil, so that the hydraulic pulse can be absorbed at the outlet of the oil scavenging pump, and the resistance to the foot of a driver of the prior ABS oil scavenging pump is overcome. The invention is has simple and small structure and good integration, can be mounted in an ABS hydraulic executing unit and can meet the small-structure requirements of the ABS hydraulic executing unit.
Description
Technical field
The present invention relates to anti-blocking brake system of automobile, particularly oil scavenging pump of braking anti-locked system of automobile.
Background technique
Along with developing of automobile industry, also more and more higher to the safety of running.Anti-blocking brake system of automobile ABS becomes the representative that is applied in the active safety system on the automobile at present.ABS can shorten stopping distance, prevents the whipping phenomenon that wheel lock up causes, and guarantees driver safety.In the ABS system, the hydraulic pressure performance element can be according to the ECU signal, at wheel during with locking, with the brake fluid in the wheel cylinder by dump pump blowback master cylinder, thereby prevent wheel lock up.But there is certain defective in existing dump pump.The one, at high voltage terminal strong hydraulic pulsation is arranged during owing to dump pump work, produce driver's " top pin " phenomenon.The 2nd, traditional ABS unit often needs to install additional the structure of damper for eliminating " top pin " phenomenon.The 3rd, traditional plunger pump volume is big, can not adapt to the requirement of ABS hydraulic pressure performance element minor structure.
Summary of the invention
Technical problem to be solved by this invention provides a kind of oil scavenging pump of braking anti-locked system of automobile, overcome existing ABS dump pump and produce " top pin " phenomenon, cancel the damper structure in the ABS hydraulic pressure performance element, and adapted to the requirement of ABS hydraulic pressure performance element minor structureization.
For solving the problems of the technologies described above, the invention provides a kind of oil scavenging pump of braking anti-locked system of automobile, comprise the pump housing, plunger, the filler opening spring, the filler opening steel ball, the oil outlet spring, oil outlet steel ball, return spring, the spring supporting base, described plunger seal is installed in the described pump housing, and described filler opening spring and filler opening steel ball are installed on plunger head, and described oil outlet steel ball is in compressive state and the pump housing oil outlet conical surface forms the potted line sealing; Described return spring one end contacts with the described pump housing, and the other end contacts with described spring supporting base, and described spring supporting base is fixed on described plunger head; It is characterized in that, also comprise blanking cover, described oil outlet spring and oil outlet steel ball are installed in the described blanking cover, described blanking cover is installed in described pump housing top interference fit with it, first aperture, second aperture, back flash are arranged in the described blanking cover, go out oil groove, an end of described first aperture connects described pump housing oil outlet, and the other end connects described back flash respectively, goes out oil groove, describedly go out oil groove and connect described dump pump high voltage terminal outlet, described second aperture is connected described back flash and goes out between the oil groove.
As the technological scheme of optimizing, the described blanking cover and the pump housing are installed in the ABS hydraulic pressure performance element body, with described ABS hydraulic pressure performance element body interference fit.
Further preferred, the described blanking cover and the pump housing are installed in the ABS hydraulic pressure performance element body, install by pushing described ABS hydraulic pressure performance element body, make the utility model can adapt to the requirement of ABS hydraulic pressure performance element minor structure.
Further optimize, form sealing by horizontal V-shaped seal ring between the described pump housing and the plunger, described horizontal V-shaped seal ring has two lip limits up and down, in the process that plunger pump pumps, described upperlip limit and pump housing internal face can form two layer sealing surfaces, prevent from that brake fluid from refluxing to enter from high voltage terminal to compress end.
ABS dump pump of the present invention has been installed blanking cover on pump housing oil outlet, first aperture, second aperture, the back flash in the blanking cover, go out oil groove and form damping structure.When brake fluid pumps the dump pump oil outlet, brake fluid flows out from first aperture, part brake fluid directly flows out by going out oil groove, and another part brake fluid flows out, flows out to dump pump high voltage terminal oil outlet through fuel-displaced groove again from second aperture after carrying out the secondary backflow by back flash.Like this, with the former fluid that once flows out, by orifice restriction, secondary circuit, form damping structure, generation is to fuel-displaced damping force, thereby makes the dump pump outlet port can absorb hydraulic pulsation, alleviates or overcome " top pin " phenomenon that existing ABS dump pump produces the driver.The ABS dump pump that the present invention adopts is simple in structure small and exquisite, and integration is good, can be installed in the ABS hydraulic pressure performance element, can adapt to the requirement of ABS hydraulic pressure performance element minor structure.
Description of drawings
Below in conjunction with the drawings and specific embodiments technological scheme of the present invention is further described in detail.
Fig. 1 is an overall structure schematic representation of the present invention.
Fig. 2 is the plan structure schematic representation of blanking cover.
Embodiment
As shown in Figure 1, blanking cover 1 is positioned at the pump housing 4 tops, with the pump housing 4 interference fit, blanking cover 1 adopts the mounting type that pushes 13 distortion of ABS hydraulic pressure performance element body with the pump housing 4, be installed in the ABS hydraulic pressure performance element body 13, blanking cover 1, the pump housing 4 and ABS hydraulic pressure performance element body 13 interference fit adapting to the requirement of ABS hydraulic pressure performance element minor structure, and reach stronger sealing effect.Oil outlet spring 2 is installed in the blanking cover 1, and an end of oil outlet spring 2 connects spheroidal oil outlet steel ball 3, and oil outlet steel ball 3 is in compressive state and the pump housing 4 oil outlet conical surfaces form the potted line sealing.Pump housing inner diameter is 8mm, plunger 11 is installed in the described pump housing 4, form sealing by horizontal V-shaped seal ring 12 between the pump housing 4 and the plunger 11, V-shaped seal ring 12 has two lip limits up and down, in the process that plunger pump pumps, lip limit and pump housing internal face can form two layer sealing surfaces, prevent from that brake fluid from refluxing to enter from high voltage terminal to compress end.Filler opening spring 5 is installed on plunger head with filler opening steel ball 8, can open automatically to form pump oil process in the reciprocal process of plunger.One end of return spring 7 contacts with the pump housing 4, and the other end contacts with spring supporting base 6, and spring supporting base 6 is fixed with the head interference of plunger 11.Return spring has bigger spring rate, can guarantee plunger return rapidly, and return spring contacts with the pump housing on one side, and another side contacts with the spring supporting base, makes spring supporting base and plunger fit tightly.The spring supporting base adopts the POM polyformaldehyde material, and inner aperture and plunger head interference are fixed.Ring filter screen 9 adopts nylon materials to make and the pump housing 4 contact segments have a tongue, can with the groove combination of the pump housing 4, make ring filter screen 9 fixedly connected with the pump housing 4.V-shaped seal ring 12 2 packing rings are arranged respectively up and down, below packing ring and body 13 fixing, above packing ring and V-shaped seal ring 12 along with the to-and-fro motion of dump pump plunger, form motive sealing, prevent that brake fluid from revealing.
As shown in Figure 2, and in conjunction with Fig. 1, the center hole 20 of blanking cover 1 is connected with 3 contacts of oil outlet steel ball, center hole 20 connects an end of first aperture 21, the other end of first aperture 21 connects back flash 22, and connect first by first guiding gutter 23 and go out oil groove 24, the first and go out oil groove 24 and connect the outlet of dump pump high voltage terminals.Back flash 22 is the circular groove around center hole 20, and it is relative that the position that has second aperture, 25, the second apertures 25 on the back flash 22 and first aperture 21 are the center of circle.26 connections second of second aperture, 25 connections, second guiding gutter, 26, the second guiding gutters go out oil groove 27, the second and go out oil groove 27 connection dump pump high voltage terminals outlets.When brake fluid pumps high voltage terminal by dump pump, at first flow out through 21 throttlings of first aperture, be divided into two parts then, a part of brake fluid successively goes out oil groove 24 through first guiding gutter 23, first and directly flows out to the outlet of dump pump high voltage terminal; Another part brake fluid enters back flash 22, carries out secondary and is back to second aperture 25, second guiding gutter 26, goes out oil groove 27 through second and flow out to the outlet of dump pump high voltage terminal.Like this, utilize the orifice restriction principle, fluid is divided into secondary circuit, form damping structure, produce huge damping force, thereby make the dump pump outlet port can absorb hydraulic pulsation.
It should be noted last that, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technological scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
- [claim 1] a kind of oil scavenging pump of braking anti-locked system of automobile, comprise the pump housing, plunger, the filler opening spring, filler opening steel ball, oil outlet spring, the oil outlet steel ball, return spring, spring supporting base, described plunger seal are installed in the described pump housing, described filler opening spring and filler opening steel ball are installed on plunger head, and described oil outlet steel ball is in compressive state and the pump housing oil outlet conical surface forms the potted line sealing; Described return spring one end contacts with the described pump housing, and the other end contacts with described spring supporting base, and described spring supporting base is fixed on described plunger head; It is characterized in that, also comprise blanking cover, described oil outlet spring and oil outlet steel ball are installed in the described blanking cover, described blanking cover is installed in described pump housing top interference fit with it, first aperture, second aperture, back flash are arranged in the described blanking cover, go out oil groove, an end of described first aperture connects described pump housing oil outlet, and the other end connects described back flash respectively, goes out oil groove, describedly go out oil groove and connect described dump pump high voltage terminal outlet, described second aperture is connected described back flash and goes out between the oil groove.
- [claim 2] oil scavenging pump of braking anti-locked system of automobile according to claim 1 is characterized in that, the described blanking cover and the pump housing are installed in the ABS hydraulic pressure performance element body, with described ABS hydraulic pressure performance element body interference fit.
- [claim 3] is characterized in that according to the described oil scavenging pump of braking anti-locked system of automobile of claim 2, and the described blanking cover and the pump housing are installed in the ABS hydraulic pressure performance element body, install by pushing described ABS hydraulic pressure performance element body.
- [claim 4] is according to claim 1 or 2 or 3 described oil scavenging pump of braking anti-locked system of automobile, it is characterized in that, form sealing by horizontal V-shaped seal ring between the described pump housing and the plunger, described horizontal V-shaped seal ring has two lip limits up and down, in the process that plunger pump pumps, described upperlip limit and pump housing internal face can form two layer sealing surfaces, prevent from that brake fluid from refluxing to enter from high voltage terminal to compress end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910301368A CN101520036A (en) | 2009-04-07 | 2009-04-07 | Oil scavenging pump of braking anti-locked system of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910301368A CN101520036A (en) | 2009-04-07 | 2009-04-07 | Oil scavenging pump of braking anti-locked system of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101520036A true CN101520036A (en) | 2009-09-02 |
Family
ID=41080795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910301368A Pending CN101520036A (en) | 2009-04-07 | 2009-04-07 | Oil scavenging pump of braking anti-locked system of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101520036A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587660A (en) * | 2016-03-04 | 2016-05-18 | 江苏冠鑫汽车配件有限公司 | ABS oil pump for two-wheel locomotive |
| CN109681421A (en) * | 2019-01-18 | 2019-04-26 | 万向钱潮股份有限公司 | A kind of upper cover of automobile ESC plunger pump |
| CN112368193A (en) * | 2018-07-11 | 2021-02-12 | 罗伯特·博世有限公司 | Hydraulic control unit for vehicle brake system |
-
2009
- 2009-04-07 CN CN200910301368A patent/CN101520036A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587660A (en) * | 2016-03-04 | 2016-05-18 | 江苏冠鑫汽车配件有限公司 | ABS oil pump for two-wheel locomotive |
| CN112368193A (en) * | 2018-07-11 | 2021-02-12 | 罗伯特·博世有限公司 | Hydraulic control unit for vehicle brake system |
| CN112368193B (en) * | 2018-07-11 | 2023-04-18 | 罗伯特·博世有限公司 | Hydraulic control unit for vehicle brake system |
| CN109681421A (en) * | 2019-01-18 | 2019-04-26 | 万向钱潮股份有限公司 | A kind of upper cover of automobile ESC plunger pump |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20090902 |